Experimental investigation of turbulent wake flows in a helically wrapped rod bundle in presence of localized blockages

Nguyen, T.; Vaghetto, R.; Hassan, Y.

doi:10.1063/5.0008589

Title: Experimental investigation of turbulent wake flows in a helically wrapped rod bundle in presence of localized blockages

Abstract

In nuclear sodium fast reactors, bundles of rods are tightly packed into a triangular lattice, enclosed in a hexagonal duct, and each pin is spirally wrapped with a thin wire. Flow blockages can potentially impact the local flow characteristics and heat transfer mechanisms in the bundle due to its small subchannel size. The effects of the blockage on the flow structures and heat transfer mechanisms are important aspects that require an accurate investigation. In this study, the flow-field characteristics in the vicinity of a blockage located in the exterior subchannel of rod bundles with helically wrapped wires were experimentally investigated. The velocity fields in the exterior subchannel were acquired by applying matched-index-of-refraction and time-resolved particle image velocimetry (TR-PIV) techniques for Reynolds numbers of Re₁ = 4000 and Re₂ = 17 000, i.e., equivalent to Rew₁ = 19 600 and Rew₂ = 83 200, respectively, based on the blockage width. The results from the TR-PIV measurements revealed an arch-shaped vortex with a large flow recirculation and a pair of counter-rotating vortices in the wake region downstream of the blockage, which is commonly observed in the wake flow of bluff bodies. The relative lateral distance and angle between the two vortices decreasedmore »« less

Authors:

^[1]; Vaghetto, R. ^[1]; Hassan, Y. ^[1]

Texas A & M Univ., College Station, TX (United States)

Publication Date:: Wed Jul 01 00:00:00 EDT 2020

Research Org.:: Texas A & M Univ., College Station, TX (United States). Texas A & M Engineering Experiment Station

Sponsoring Org.:: USDOE Office of Nuclear Energy (NE)

OSTI Identifier:: 1801264

Alternate Identifier(s):: OSTI ID: 1638772

Grant/Contract Number:: NE0008652

Resource Type:: Accepted Manuscript

Journal Name:: Physics of Fluids

Additional Journal Information:: Journal Volume: 32; Journal Issue: 7; Journal ID: ISSN 1070-6631

Publisher:: American Institute of Physics (AIP)

Country of Publication:: United States

Language:: English

Subject:: 11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS; Mechanics; Physics; Engineering thermodynamics; Vortex dynamics; Nuclear fuel; Vector fields; Flow visualization; Turbulent flows; Steam generator

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                    Nguyen, T., Vaghetto, R., and Hassan, Y. Experimental investigation of turbulent wake flows in a helically wrapped rod bundle in presence of localized blockages.  United States: N. p., 2020. 
Web.  doi:10.1063/5.0008589.

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                    Nguyen, T., Vaghetto, R., & Hassan, Y. Experimental investigation of turbulent wake flows in a helically wrapped rod bundle in presence of localized blockages.  United States.  https://doi.org/10.1063/5.0008589

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                    Nguyen, T., Vaghetto, R., and Hassan, Y. Wed .  
"Experimental investigation of turbulent wake flows in a helically wrapped rod bundle in presence of localized blockages".  United States.  https://doi.org/10.1063/5.0008589.  https://www.osti.gov/servlets/purl/1801264.

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@article{osti_1801264,

  title        = {Experimental investigation of turbulent wake flows in a helically wrapped rod bundle in presence of localized blockages},

  author       = {Nguyen, T. and Vaghetto, R. and Hassan, Y.},

  abstractNote = {In nuclear sodium fast reactors, bundles of rods are tightly packed into a triangular lattice, enclosed in a hexagonal duct, and each pin is spirally wrapped with a thin wire. Flow blockages can potentially impact the local flow characteristics and heat transfer mechanisms in the bundle due to its small subchannel size. The effects of the blockage on the flow structures and heat transfer mechanisms are important aspects that require an accurate investigation. In this study, the flow-field characteristics in the vicinity of a blockage located in the exterior subchannel of rod bundles with helically wrapped wires were experimentally investigated. The velocity fields in the exterior subchannel were acquired by applying matched-index-of-refraction and time-resolved particle image velocimetry (TR-PIV) techniques for Reynolds numbers of Re1 = 4000 and Re2 = 17 000, i.e., equivalent to Rew1 = 19 600 and Rew2 = 83 200, respectively, based on the blockage width. The results from the TR-PIV measurements revealed an arch-shaped vortex with a large flow recirculation and a pair of counter-rotating vortices in the wake region downstream of the blockage, which is commonly observed in the wake flow of bluff bodies. The relative lateral distance and angle between the two vortices decreased when the Reynolds numbers increased. Profiles of maximum turbulence intensity along the shear layers illustrated the transition process including the growth, peak, and decay along the flow direction. From the spectral analysis of the turbulent velocities extracted at points along the shear layer, the Strouhal numbers (St) representing the vortex shedding frequency were found to be St = 0.25 and St = 0.56 for the left and right shear layers, respectively. Characteristics of shear layers generated by the blockage in the exterior subchannel were investigated via the two-point cross correlation of fluctuating velocities. The patiotemporal cross correlations of turbulent velocities, computed at points in the region where the left shear layer exhibited rolling effects and vortex breakdowns, were considerably wider and longer. The convection velocity Uc was estimated to be ~0.82Um to 0.93Um. Proper orthogonal decomposition (POD) analysis was applied to the instantaneous velocity fields to extract the statistically dominant flow structures. It was found that POD modes 2–3 and 4–5 formed the pair modes when the corresponding POD temporal coefficients depicted sinusoidal shapes and exhibited nearly circular orbits in the phase space. Spectral analysis of the POD temporal coefficients confirmed the vortex shedding frequencies detected in the analysis of turbulent velocities.},

  doi          = {10.1063/5.0008589},

  journal      = {Physics of Fluids},

  number       = 7,

  volume       = 32,

  place        = {United States},

  year         = {Wed Jul 01 00:00:00 EDT 2020},

  month        = {Wed Jul 01 00:00:00 EDT 2020}

}

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DOI: 10.1016/j.ijheatfluidflow.2019.108486

Particle image velocimetry measurements of induced separation at the leading edge of a plate
journal, September 2016

Stevenson, J. P. J.; Nolan, K. P.; Walsh, E. J.
Journal of Fluid Mechanics, Vol. 804
DOI: 10.1017/jfm.2016.532

A comparative experimental evaluation of uncertainty estimation methods for two-component PIV
journal, August 2016

Boomsma, Aaron; Bhattacharya, Sayantan; Troolin, Dan
Measurement Science and Technology, Vol. 27, Issue 9
DOI: 10.1088/0957-0233/27/9/094006

Experimental measurements of flow mixing in cold leg of a pressurized water reactor
journal, June 2020

Orea, Daniel; Vaghetto, Rodolfo; Nguyen, Thien
Annals of Nuclear Energy, Vol. 140
DOI: 10.1016/j.anucene.2019.107137

Refractive index and solubility control of para-cymene solutions for index-matched fluid–structure interaction studies
journal, November 2015

Fort, Charles; Fu, Christopher D.; Weichselbaum, Noah A.
Experiments in Fluids, Vol. 56, Issue 12
DOI: 10.1007/s00348-015-2080-x

Particle Image Velocimetry: A Practical Guide
book, January 2018

Raffel, Markus; Willert, Christian E.; Scarano, Fulvio
DOI: 10.1007/978-3-319-68852-7

Proper orthogonal decomposition-based estimations of the flow field from particle image velocimetry wall-gradient measurements in the backward-facing step flow
journal, September 2010

Nguyen, Thien Duy; Wells, John Craig; Mokhasi, Paritosh
Measurement Science and Technology, Vol. 21, Issue 11
DOI: 10.1088/0957-0233/21/11/115406

Experimental investigation of cross flow mixing in a randomly packed bed and streamwise vortex characteristics using particle image velocimetry and proper orthogonal decomposition analysis
journal, February 2019

Nguyen, T.; Muyshondt, R.; Hassan, Y. A.
Physics of Fluids, Vol. 31, Issue 2
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Direct numerical simulation of ‘short’ laminar separation bubbles with turbulent reattachment
journal, May 2000

Alam, M.; Sandham, N. D.
Journal of Fluid Mechanics, Vol. 410
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Direct numerical simulation of transitional flow in a staggered tube bundle
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Linton, D.; Thornber, B.
Physics of Fluids, Vol. 28, Issue 2
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Numerical implementation of the Cheng and Todreas correlation for wire wrapped bundle friction factors-desirable improvements in the transition flow region
journal, October 2013

Chen, S. K.; Petroski, R.; Todreas, N. E.
Nuclear Engineering and Design, Vol. 263
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The Proper Orthogonal Decomposition in the Analysis of Turbulent Flows
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Berkooz, G.; Holmes, P.; Lumley, J. L.
Annual Review of Fluid Mechanics, Vol. 25, Issue 1
DOI: 10.1146/annurev.fl.25.010193.002543

Evaluation of existing correlations for the prediction of pressure drop in wire-wrapped hexagonal array pin bundles
journal, February 2014

Chen, S. K.; Todreas, N. E.; Nguyen, N. T.
Nuclear Engineering and Design, Vol. 267
DOI: 10.1016/j.nucengdes.2013.12.003

Structure of a turbulent separation bubble
journal, December 1983

Kiya, Masaru; Sasaki, Kyuro
Journal of Fluid Mechanics, Vol. 137
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Dependence of square cylinder wake on Reynolds number
journal, January 2018

Bai, Honglei; Alam, Md. Mahbub
Physics of Fluids, Vol. 30, Issue 1
DOI: 10.1063/1.4996945

A method for automatic estimation of instantaneous local uncertainty in particle image velocimetry measurements
journal, July 2012

Timmins, Benjamin H.; Wilson, Brandon W.; Smith, Barton L.
Experiments in Fluids, Vol. 53, Issue 4
DOI: 10.1007/s00348-012-1341-1

Assessment of advanced windowing techniques for digital particle image velocimetry (DPIV)
journal, June 2009

Eckstein, Adric; Vlachos, Pavlos P.
Measurement Science and Technology, Vol. 20, Issue 7
DOI: 10.1088/0957-0233/20/7/075402

Phase correlation processing for DPIV measurements
journal, March 2008

Eckstein, Adric C.; Charonko, John; Vlachos, Pavlos
Experiments in Fluids, Vol. 45, Issue 3
DOI: 10.1007/s00348-008-0492-6

Flow boiling of distilled water over plain tube bundle with uniform and varying heat flux along the height of the tube bundle
journal, April 2017

Swain, Abhilas; Das, Mihir Kumar
Experimental Thermal and Fluid Science, Vol. 82
DOI: 10.1016/j.expthermflusci.2016.11.022

Motion of particles with inertia in a compressible free shear layer
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Samimy, M.; Lele, S. K.
Physics of Fluids A: Fluid Dynamics, Vol. 3, Issue 8
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Abstract

Citation Formats

Coherent structures—reality and myth journal, January 1983

Phase-resolved PIV measurements of flow over three unevenly spaced cylinders and its coupling with acoustic resonance journal, March 2019

PIV measurements of turbulent flows in a 61-pin wire-wrapped hexagonal fuel bundle journal, June 2017

An experimental study and assessment of existing friction factor correlations for wire-wrapped fuel assemblies journal, November 2001

Estimation of uncertainty bounds for individual particle image velocimetry measurements from cross-correlation peak ratio journal, April 2013

Hydrodynamic models and correlations for bare and wire-wrapped hexagonal rod bundles — Bundle friction factors, subchannel friction factors and mixing parameters journal, April 1986

Generalized phase average with applications to sensor-based flow estimation of the wall-mounted square cylinder wake journal, November 2013

Proper orthogonal decomposition analysis of a circular cylinder undergoing vortex-induced vibrations journal, October 2018

Analysis of two-point velocity measurements in near-wall flows journal, December 1995

A laser-Doppler velocimetry study of ensemble-averaged characteristics of the turbulent near wake of a square cylinder journal, December 1995

PIV investigation of the flow induced by a passive surge control method in a radial compressor journal, May 2012

Digital particle image velocimetry (DPIV) robust phase correlation journal, April 2009

The turbulence cascade in the near wake of a square prism journal, July 2017

Numerical simulation of the flow in wire-wrapped pin bundles: Effect of pin-wire contact modeling journal, December 2012

Benchmark exercise for fluid flow simulations in a liquid metal fast reactor fuel assembly journal, March 2016

Large-eddy simulation of boundary-layer separation and transition at a change of surface curvature journal, July 2001

Dynamics of vortex lock-on in a perturbed cylinder wake journal, July 2006

CFD analysis of flow blockage phenomena in a LBE-cooled 19-pin wire-wrapped rod bundle journal, April 2019

Comparison of experimental and simulation results on interior subchannels of a 61-pin wire-wrapped hexagonal fuel bundle journal, November 2018

PIV measurements on the passive control of flow past a circular cylinder journal, January 2016

Pressure drop performance of rod bundles in hexagonal arrangements journal, December 1972

PIV uncertainty propagation journal, June 2016

Turbulent flow and vortex characteristics in a blocked subchannel of a helically wrapped rod bundle journal, July 2019

Quantitative visualization of temperature field and measurement of local heat transfer coefficient over heat exchanger elements in sinusoidal oscillating flow journal, July 2017

PTV/PIV measurements of turbulent flows in interior subchannels of a 61-pin wire-wrapped hexagonal fuel bundle journal, June 2018

Blocked Flow Subchannel Simulation Comparison With Single-Phase Flow Data journal, June 1992

Turbulent flow around a square cylinder at Reynolds number 22,000: A DNS study journal, December 2015

Flows over surface-mounted bluff bodies with different spanwise widths submerged in a deep turbulent boundary layer journal, August 2019

Modeling of Flow Blockage in a Liquid Metal-Cooled Reactor Subassembly with a Subchannel Analysis Code journal, January 2005

Numerical investigations on the flow over cuboids with different aspect ratios and the emitted noise journal, February 2020

Organized Motion in Turbulent Flow journal, January 1981

Properties of the mean recirculation region in the wakes of two-dimensional bluff bodies journal, November 1997

Uncertainty on PIV mean and fluctuating velocity due to bias and random errors journal, February 2013

Towards better uncertainty estimates for turbulence statistics journal, December 1996

Vertical, Bubbly, Cross-Flow Characteristics over Tube Bundles journal, October 2005

Stereoscopic PIV measurements of near-wall flow in a tightly packed rod bundle with wire spacers journal, April 2018

Large-eddy simulation of the flow around a bluff body journal, January 2002

A CFD analysis of flow blockage phenomena in ALFRED LFR demo fuel assembly journal, September 2014

Turbulent correlation measurements in a two-stream mixing layer. journal, August 1973

On the limitations of Taylor's hypothesis in constructing long structures in a turbulent boundary layer journal, October 2008

Flow over a bluff body from moderate to high Reynolds numbers using large eddy simulation journal, December 2006

Aeroacoustics and aerodynamics of impinging supersonic jets: Analysis of the screech tones journal, August 2013

Energy balance for turbulent flow around a surface mounted cube placed in a channel journal, March 1996

Obtaining phase averaged turbulence properties in the near wake of a circular cylinder at high Reynolds number using POD journal, August 2007

Experimental and numerical investigation of turbulent cross-flow in a staggered tube bundle journal, April 2008

A review of bluff body wakes journal, June 2019

An investigation of matched index of refraction technique and its application in optical measurements of fluid flow journal, November 2012

Flow and convective heat transfer analysis using RANS for a wire-wrapped fuel assembly journal, September 2006

Natural circulation flow distribution within a multi-branch manifold journal, June 2019

A few thoughts on proper orthogonal decomposition in turbulence journal, February 2017

PIV measurement of the vertical cross-flow structure over tube bundles journal, June 2004

Three-dimensional instability of the flow over a forward-facing step journal, February 2012

Influence of the bluff body shear layers on the wake of a square prism in a turbulent flow journal, August 2016

Scaling of square-prism shear layers journal, June 2018

Pressure/velocity coupling induced by a near wall wake journal, January 2010

Flowfield Characteristics of a Supersonic Jet Impinging on an Inclined Surface journal, March 2020

Time-resolved and time-averaged stereo-PIV measurements of a unit-ratio cavity journal, May 2016

Experimental Study of the Diversion Crossflow Caused by Subchannel Blockages. Part II: Pressures in the Channels and the Comparison of the COBRA III-C Predictions With Experimental Data journal, December 1984

Experimental Study of the Diversion Crossflow Caused by Subchannel Blockages. Part I: Experimental Procedures and Mass Flow Rates in the Channels journal, December 1984

Experimental investigations on single-phase convection and steam-water two-phase flow boiling in a vertical rod bundle journal, January 2017

Effect of turbulence on the wake of a wall-mounted cube journal, September 2016

Reduced order modelling method via proper orthogonal decomposition (POD) for flow around an oscillating cylinder journal, February 2010

Flow visualization in a pebble bed reactor experiment using PIV and refractive index matching techniques journal, November 2008

Geometry effects on mean wake topology and large-scale coherent structures of wall-mounted prisms journal, December 2019

Calculation of Friction Factors and Nusselt Numbers for Twisted Elliptical Tube Heat Exchangers Using Nek5000 journal, April 2019

An Experimental Investigation of Turbulent Convection Velocities in a Turbulent Boundary Layer journal, December 2014

Flow Distribution and Pressure Loss in Subchannels of a Wire-Wrapped 37-pin Rod Bundle for a Sodium-Cooled Fast Reactor journal, April 2016

Optical measurements of pore geometry and fluid velocity in a bed of irregularly packed spheres journal, March 2008

Collaborative framework for PIV uncertainty quantification: the experimental database journal, June 2015

Collaborative framework for PIV uncertainty quantification: comparative assessment of methods journal, June 2015

Time-resolved PIV measurements in a low-aspect ratio facility of randomly packed spheres and flow analysis using modal decomposition journal, July 2018

Effect of initial conditions on interaction between a boundary layer and a wall-mounted finite-length-cylinder wake journal, January 2006

Measurement and analysis of the turbulent length scales in jet flows journal, September 2010

Numerical simulations for determination of minimum representative bundle size in wire wrapped tube bundles journal, October 2017

Direct numerical simulation of turbulent flow around a wall-mounted cube: spatio-temporal evolution of large-scale vortices journal, October 2006

Heat transfer experiment in a partially (internally) blocked 19-rod bundle with wire spacers cooled by LBE journal, April 2018

Stereoscopic particle image velocimetry measurements of flow in a rod bundle with a spacer grid and mixing vanes at a low Reynolds number journal, October 2017

Coherent structures—reality and myth
journal, January 1983

Phase-resolved PIV measurements of flow over three unevenly spaced cylinders and its coupling with acoustic resonance
journal, March 2019

PIV measurements of turbulent flows in a 61-pin wire-wrapped hexagonal fuel bundle
journal, June 2017

An experimental study and assessment of existing friction factor correlations for wire-wrapped fuel assemblies
journal, November 2001

Estimation of uncertainty bounds for individual particle image velocimetry measurements from cross-correlation peak ratio
journal, April 2013

Hydrodynamic models and correlations for bare and wire-wrapped hexagonal rod bundles — Bundle friction factors, subchannel friction factors and mixing parameters
journal, April 1986

Generalized phase average with applications to sensor-based flow estimation of the wall-mounted square cylinder wake
journal, November 2013

Proper orthogonal decomposition analysis of a circular cylinder undergoing vortex-induced vibrations
journal, October 2018

Analysis of two-point velocity measurements in near-wall flows
journal, December 1995

A laser-Doppler velocimetry study of ensemble-averaged characteristics of the turbulent near wake of a square cylinder
journal, December 1995

PIV investigation of the flow induced by a passive surge control method in a radial compressor
journal, May 2012

Digital particle image velocimetry (DPIV) robust phase correlation
journal, April 2009

The turbulence cascade in the near wake of a square prism
journal, July 2017

Numerical simulation of the flow in wire-wrapped pin bundles: Effect of pin-wire contact modeling
journal, December 2012

Benchmark exercise for fluid flow simulations in a liquid metal fast reactor fuel assembly
journal, March 2016

Large-eddy simulation of boundary-layer separation and transition at a change of surface curvature
journal, July 2001

Dynamics of vortex lock-on in a perturbed cylinder wake
journal, July 2006

CFD analysis of flow blockage phenomena in a LBE-cooled 19-pin wire-wrapped rod bundle
journal, April 2019

Comparison of experimental and simulation results on interior subchannels of a 61-pin wire-wrapped hexagonal fuel bundle
journal, November 2018

PIV measurements on the passive control of flow past a circular cylinder
journal, January 2016

Pressure drop performance of rod bundles in hexagonal arrangements
journal, December 1972

PIV uncertainty propagation
journal, June 2016

Turbulent flow and vortex characteristics in a blocked subchannel of a helically wrapped rod bundle
journal, July 2019

Quantitative visualization of temperature field and measurement of local heat transfer coefficient over heat exchanger elements in sinusoidal oscillating flow
journal, July 2017

PTV/PIV measurements of turbulent flows in interior subchannels of a 61-pin wire-wrapped hexagonal fuel bundle
journal, June 2018

Blocked Flow Subchannel Simulation Comparison With Single-Phase Flow Data
journal, June 1992

Turbulent flow around a square cylinder at Reynolds number 22,000: A DNS study
journal, December 2015

Flows over surface-mounted bluff bodies with different spanwise widths submerged in a deep turbulent boundary layer
journal, August 2019

Modeling of Flow Blockage in a Liquid Metal-Cooled Reactor Subassembly with a Subchannel Analysis Code
journal, January 2005

Numerical investigations on the flow over cuboids with different aspect ratios and the emitted noise
journal, February 2020

Organized Motion in Turbulent Flow
journal, January 1981

Properties of the mean recirculation region in the wakes of two-dimensional bluff bodies
journal, November 1997

Uncertainty on PIV mean and fluctuating velocity due to bias and random errors
journal, February 2013

Towards better uncertainty estimates for turbulence statistics
journal, December 1996

Vertical, Bubbly, Cross-Flow Characteristics over Tube Bundles
journal, October 2005

Stereoscopic PIV measurements of near-wall flow in a tightly packed rod bundle with wire spacers
journal, April 2018

Large-eddy simulation of the flow around a bluff body
journal, January 2002

A CFD analysis of flow blockage phenomena in ALFRED LFR demo fuel assembly
journal, September 2014

Turbulent correlation measurements in a two-stream mixing layer.
journal, August 1973

On the limitations of Taylor's hypothesis in constructing long structures in a turbulent boundary layer
journal, October 2008

Flow over a bluff body from moderate to high Reynolds numbers using large eddy simulation
journal, December 2006

Aeroacoustics and aerodynamics of impinging supersonic jets: Analysis of the screech tones
journal, August 2013

Energy balance for turbulent flow around a surface mounted cube placed in a channel
journal, March 1996

Obtaining phase averaged turbulence properties in the near wake of a circular cylinder at high Reynolds number using POD
journal, August 2007

Experimental and numerical investigation of turbulent cross-flow in a staggered tube bundle
journal, April 2008

A review of bluff body wakes
journal, June 2019

An investigation of matched index of refraction technique and its application in optical measurements of fluid flow
journal, November 2012

Flow and convective heat transfer analysis using RANS for a wire-wrapped fuel assembly
journal, September 2006

Natural circulation flow distribution within a multi-branch manifold
journal, June 2019

A few thoughts on proper orthogonal decomposition in turbulence
journal, February 2017

PIV measurement of the vertical cross-flow structure over tube bundles
journal, June 2004

Three-dimensional instability of the flow over a forward-facing step
journal, February 2012

Influence of the bluff body shear layers on the wake of a square prism in a turbulent flow
journal, August 2016

Scaling of square-prism shear layers
journal, June 2018

Pressure/velocity coupling induced by a near wall wake
journal, January 2010

Flowfield Characteristics of a Supersonic Jet Impinging on an Inclined Surface
journal, March 2020

Time-resolved and time-averaged stereo-PIV measurements of a unit-ratio cavity
journal, May 2016

Experimental Study of the Diversion Crossflow Caused by Subchannel Blockages. Part II: Pressures in the Channels and the Comparison of the COBRA III-C Predictions With Experimental Data
journal, December 1984

Experimental Study of the Diversion Crossflow Caused by Subchannel Blockages. Part I: Experimental Procedures and Mass Flow Rates in the Channels
journal, December 1984

Experimental investigations on single-phase convection and steam-water two-phase flow boiling in a vertical rod bundle
journal, January 2017

Effect of turbulence on the wake of a wall-mounted cube
journal, September 2016

Reduced order modelling method via proper orthogonal decomposition (POD) for flow around an oscillating cylinder
journal, February 2010

Flow visualization in a pebble bed reactor experiment using PIV and refractive index matching techniques
journal, November 2008

Geometry effects on mean wake topology and large-scale coherent structures of wall-mounted prisms
journal, December 2019

Calculation of Friction Factors and Nusselt Numbers for Twisted Elliptical Tube Heat Exchangers Using Nek5000
journal, April 2019

An Experimental Investigation of Turbulent Convection Velocities in a Turbulent Boundary Layer
journal, December 2014

Flow Distribution and Pressure Loss in Subchannels of a Wire-Wrapped 37-pin Rod Bundle for a Sodium-Cooled Fast Reactor
journal, April 2016

Optical measurements of pore geometry and fluid velocity in a bed of irregularly packed spheres
journal, March 2008

Collaborative framework for PIV uncertainty quantification: the experimental database
journal, June 2015

Collaborative framework for PIV uncertainty quantification: comparative assessment of methods
journal, June 2015

Time-resolved PIV measurements in a low-aspect ratio facility of randomly packed spheres and flow analysis using modal decomposition
journal, July 2018

Effect of initial conditions on interaction between a boundary layer and a wall-mounted finite-length-cylinder wake
journal, January 2006

Measurement and analysis of the turbulent length scales in jet flows
journal, September 2010

Numerical simulations for determination of minimum representative bundle size in wire wrapped tube bundles
journal, October 2017

Direct numerical simulation of turbulent flow around a wall-mounted cube: spatio-temporal evolution of large-scale vortices
journal, October 2006

Heat transfer experiment in a partially (internally) blocked 19-rod bundle with wire spacers cooled by LBE
journal, April 2018

Stereoscopic particle image velocimetry measurements of flow in a rod bundle with a spacer grid and mixing vanes at a low Reynolds number
journal, October 2017

Three-Dimensional Vortex Structure in a Leading-Edge Separation Bubble at Moderate Reynolds Numbers
journal, September 1991

On vortex shedding from low aspect ratio dual step cylinders
journal, January 2014

CFD investigation of effect of helical wire-wrap parameters on the thermal hydraulic performance of 217 fuel pin bundle
journal, March 2015