Natural convection inside heated channel of a facility representing prismatic modular reactor core

Taha, Mahmoud M.; Said, Ibrahim A.; Usman, Shoaib; Al‐Dahhan, Muthanna H.

doi:10.1002/aic.16185

Title: Natural convection inside heated channel of a facility representing prismatic modular reactor core

Abstract

The newly developed Plenum‐to‐Plenum facility (P2PF) at Missouri S&T has shown to be an innovative separate effects test facility representing the geometry of prismatic modular reactors. Thermal and velocity fields inside this dual channel facility have been investigated under different natural circulation intensities. It is found that temperature and velocity profiles are function of the measurements locations and the amount of heat supplied to the channel. Quantification of the overall Rayleigh number versus overall Reynold number are found to be related by . Upper plenum mixing was characterized by determining the modified Reynold number and Froude number dimensionless groups. Analysis of these dimensionless groups along with observable turbulence amplifications emphasize relevance of adopting axial temperature inflection as a criterion for initiation of naturally driven flow destabilization inside vertical heated channels. Additionally, quantification of the distortion factors for characteristic dimensionless groups reveal a good similarity between the P2PF and the Modular High Temperature Gas‐cooled Reactor. © 2018 American Institute of Chemical Engineers AIChE J , 64: 3467–3478, 2018

Authors:

Taha, Mahmoud M. ^[1]; Said, Ibrahim A. ^[1]; Usman, Shoaib ^[2];

^[3]

Multiphase Reactors Engineering and Applications Laboratory (mReal), Dept. of Chemical and Biochemical Engineering Missouri University of Science and Technology Rolla MO, Chemical Engineering Dept. Alexandria University Alexandria Egypt
Dept. of Mining and Nuclear Engineering Missouri University of Science and Technology Rolla MO
Cihan University of Erbil. Kurdistan Iraq

Publication Date:: Fri May 04 00:00:00 EDT 2018

Sponsoring Org.:: USDOE

OSTI Identifier:: 1436019

Grant/Contract Number:: NEUP 13‐4953 (DENE0000744)

Resource Type:: Publisher's Accepted Manuscript

Journal Name:: AIChE Journal

Additional Journal Information:: Journal Name: AIChE Journal Journal Volume: 64 Journal Issue: 9; Journal ID: ISSN 0001-1541

Publisher:: Wiley Blackwell (John Wiley & Sons)

Country of Publication:: United States

Language:: English

Citation Formats


                    Taha, Mahmoud M., Said, Ibrahim A., Usman, Shoaib, and Al‐Dahhan, Muthanna H. Natural convection inside heated channel of a facility representing prismatic modular reactor core.  United States: N. p., 2018. 
Web.  doi:10.1002/aic.16185.

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                    Taha, Mahmoud M., Said, Ibrahim A., Usman, Shoaib, & Al‐Dahhan, Muthanna H. Natural convection inside heated channel of a facility representing prismatic modular reactor core.  United States.  https://doi.org/10.1002/aic.16185

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                    Taha, Mahmoud M., Said, Ibrahim A., Usman, Shoaib, and Al‐Dahhan, Muthanna H. Fri .  
"Natural convection inside heated channel of a facility representing prismatic modular reactor core".  United States.  https://doi.org/10.1002/aic.16185.

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@article{osti_1436019,

  title        = {Natural convection inside heated channel of a facility representing prismatic modular reactor core},

  author       = {Taha, Mahmoud M. and Said, Ibrahim A. and Usman, Shoaib and Al‐Dahhan, Muthanna H.},

  abstractNote = {The newly developed Plenum‐to‐Plenum facility (P2PF) at Missouri S&T has shown to be an innovative separate effects test facility representing the geometry of prismatic modular reactors. Thermal and velocity fields inside this dual channel facility have been investigated under different natural circulation intensities. It is found that temperature and velocity profiles are function of the measurements locations and the amount of heat supplied to the channel. Quantification of the overall Rayleigh number versus overall Reynold number are found to be related by . Upper plenum mixing was characterized by determining the modified Reynold number and Froude number dimensionless groups. Analysis of these dimensionless groups along with observable turbulence amplifications emphasize relevance of adopting axial temperature inflection as a criterion for initiation of naturally driven flow destabilization inside vertical heated channels. Additionally, quantification of the distortion factors for characteristic dimensionless groups reveal a good similarity between the P2PF and the Modular High Temperature Gas‐cooled Reactor. © 2018 American Institute of Chemical Engineers AIChE J , 64: 3467–3478, 2018},

  doi          = {10.1002/aic.16185},

  journal      = {AIChE Journal},

  number       = 9,

  volume       = 64,

  place        = {United States},

  year         = {Fri May 04 00:00:00 EDT 2018},

  month        = {Fri May 04 00:00:00 EDT 2018}

}

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https://doi.org/10.1002/aic.16185

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Title: Natural convection inside heated channel of a facility representing prismatic modular reactor core

Abstract

Citation Formats

The limits of conditional stability for single-phase natural circulation with throughflow in a figure-of-eight loop journal, August 1992

Velocity characteristics of turbulent natural convection in symmetrically and asymmetrically heated vertical channels journal, April 2002

Effect of helium pressure on natural convection heat transfer in a prismatic dual-channel circulation loop journal, February 2018

Convective heat transfer in unsteady laminar parallel flows journal, October 2006

Preliminary tests of particle image velocimetry for the upper plenum of a scaled model of a very high temperature gas cooled reactor journal, August 2015

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Investigation of natural convection heat transfer in a unique scaled-down dual-channel facility journal, November 2016

Flow downward penetration of vertical parallel plates natural convection with an asymmetrically heated wall journal, May 2016

Experimental investigation of the helium natural circulation heat transfer in two channels facility using varying riser channel heat fluxes journal, May 2018

Numerical study on thermal stratification phenomena in upper plenum of LMFBR “MONJU” journal, May 2013

Experimental investigation of turbulent natural convection in a vertical water channel with symmetric heating: Flow and heat transfer journal, January 2013

Natural convection in a vertical cylinder subject to constant heat flux journal, March 1979

An integrated structure and scaling methodology for severe accident technical issue resolution: Development of methodology journal, November 1998

Convection Heat Transfer book, January 2013

Turbulent natural convection in vertical parallel-plate channels journal, February 2006

The design features of the HTR-10 journal, October 2002

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Turbulent natural convection in a vertical parallel-plate channel with asymmetric heating journal, July 2007

Natural convection heat transfer inside an open vertical pipe: Influences of length, diameter and Prandtl number journal, May 2017

Numerical and experimental investigation of unsteady natural convection in a non-uniformly heated vertical open-ended channel journal, January 2016

Temperature and velocity field characteristics of turbulent natural convection in a vertical parallel-plate channel with asymmetric heating journal, February 2007

Fully developed laminar free convection between vertical plates heated asymmetrically journal, August 1972

Transitional natural convection flow and heat transfer in an open channel journal, January 2013

Developing laminar free convection between vertical flat plates with asymmetric heating journal, November 1972

On transition mechanisms in vertical natural convection flow journal, November 1974

Gas-Cooled Reactor Opportunities in the 21st Century conference, August 1992

Experimental and Computational Assessment of Core Bypass Flow in Block-Type Very High Temperature Reactor journal, August 2011

Turbulent free Convection heat Transfer from Vertical Parallel Plates conference, January 2019

Heat dissipation of parallel plates by free convection journal, January 1942

On the Oscillatory Instability of Closed-Loop Thermosyphons journal, November 1985

Experimental investigation of turbulent natural convection flow in a channel journal, September 2005

A review of modern advances in analyses and applications of single-phase natural circulation loop in nuclear thermal hydraulics journal, December 2014

Upflow turbulent mixed convection heat transfer in vertical pipes journal, October 1998

Comparative measurements of natural convection heat transfer in channels by holographic interferometry and schlieren journal, December 2005

Thermal–hydraulics analyses for 1/6 prismatic VHTR core and fuel element with and without bypass flow journal, March 2013

Onset of Flow Reversal and Penetration Length of Natural Convective Flow Between Isothermal Vertical Walls journal, August 1995

Scaling analysis for the high temperature Gas Reactor Test Section (GRTS) journal, February 2010

Numerical and Experimental Investigation of Unsteady Natural Convection in a Vertical Open-Ended Channel journal, January 2012

On the onset of turbulence in natural convection on inclined plates journal, January 2011

Numerical investigation of a heat transfer within the prismatic fuel assembly of a very high temperature reactor journal, October 2008

Numerical Simulation of a Vertical Solar Collector Integrated in a Building Frame: Radiation and Turbulent Natural Convection Coupling journal, March 2006

Laminar free convection flow rate in a vertical tube journal, April 1988

CFD Calculations of Natural Circulation in a High Temperature Gas Reactor Following Pressurized Circulator Shutdown conference, August 2012

Computational fluid dynamic analysis of core bypass flow phenomena in a prismatic VHTR journal, September 2010

Buoyancy-driven air flow within plenum-to-plenum facility down-comer channel journal, June 2018

The development of laminar natural-convective flow in a vertical uniform heat flux duct journal, December 1975

Turbulent natural convection heat transfer in an asymmetrically heated, vertical parallel-plate channel journal, October 1997

Vertical-channel natural convection spanning between the fully-developed limit and the single-plate boundary-layer limit journal, October 1985

Natural Circulation Loops journal, November 1988

The limits of conditional stability for single-phase natural circulation with throughflow in a figure-of-eight loop
journal, August 1992

Velocity characteristics of turbulent natural convection in symmetrically and asymmetrically heated vertical channels
journal, April 2002

Effect of helium pressure on natural convection heat transfer in a prismatic dual-channel circulation loop
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Convective heat transfer in unsteady laminar parallel flows
journal, October 2006

Preliminary tests of particle image velocimetry for the upper plenum of a scaled model of a very high temperature gas cooled reactor
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Experimental observations on the general trends of the steady state and stability behaviour of single-phase natural circulation loops
journal, June 2002

Nuclear Energy for Hydrogen Generation through Intermediate Heat Exchangers
book, January 2016

Design aspects of the Chinese modular high-temperature gas-cooled reactor HTR-PM
journal, March 2006

Investigation of natural convection heat transfer in a unique scaled-down dual-channel facility
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Flow downward penetration of vertical parallel plates natural convection with an asymmetrically heated wall
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Experimental investigation of the helium natural circulation heat transfer in two channels facility using varying riser channel heat fluxes
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Numerical study on thermal stratification phenomena in upper plenum of LMFBR “MONJU”
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Experimental investigation of turbulent natural convection in a vertical water channel with symmetric heating: Flow and heat transfer
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journal, February 2006

The design features of the HTR-10
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Observed Flow Reversals and Measured-Predicted Nusselt Numbers for Natural Convection in a One-Sided Heated Vertical Channel
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Numerical and experimental investigation of unsteady natural convection in a non-uniformly heated vertical open-ended channel
journal, January 2016

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journal, February 2007

Fully developed laminar free convection between vertical plates heated asymmetrically
journal, August 1972

Transitional natural convection flow and heat transfer in an open channel
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Developing laminar free convection between vertical flat plates with asymmetric heating
journal, November 1972

On transition mechanisms in vertical natural convection flow
journal, November 1974

Gas-Cooled Reactor Opportunities in the 21st Century
conference, August 1992

Experimental and Computational Assessment of Core Bypass Flow in Block-Type Very High Temperature Reactor
journal, August 2011

Turbulent free Convection heat Transfer from Vertical Parallel Plates
conference, January 2019

Heat dissipation of parallel plates by free convection
journal, January 1942

On the Oscillatory Instability of Closed-Loop Thermosyphons
journal, November 1985

Experimental investigation of turbulent natural convection flow in a channel
journal, September 2005

A review of modern advances in analyses and applications of single-phase natural circulation loop in nuclear thermal hydraulics
journal, December 2014

Upflow turbulent mixed convection heat transfer in vertical pipes
journal, October 1998

Comparative measurements of natural convection heat transfer in channels by holographic interferometry and schlieren
journal, December 2005

Thermal–hydraulics analyses for 1/6 prismatic VHTR core and fuel element with and without bypass flow
journal, March 2013

Onset of Flow Reversal and Penetration Length of Natural Convective Flow Between Isothermal Vertical Walls
journal, August 1995

Scaling analysis for the high temperature Gas Reactor Test Section (GRTS)
journal, February 2010

Numerical and Experimental Investigation of Unsteady Natural Convection in a Vertical Open-Ended Channel
journal, January 2012

On the onset of turbulence in natural convection on inclined plates
journal, January 2011

Numerical investigation of a heat transfer within the prismatic fuel assembly of a very high temperature reactor
journal, October 2008

Numerical Simulation of a Vertical Solar Collector Integrated in a Building Frame: Radiation and Turbulent Natural Convection Coupling
journal, March 2006

Laminar free convection flow rate in a vertical tube
journal, April 1988

CFD Calculations of Natural Circulation in a High Temperature Gas Reactor Following Pressurized Circulator Shutdown
conference, August 2012

Computational fluid dynamic analysis of core bypass flow phenomena in a prismatic VHTR
journal, September 2010

Buoyancy-driven air flow within plenum-to-plenum facility down-comer channel
journal, June 2018

The development of laminar natural-convective flow in a vertical uniform heat flux duct
journal, December 1975

Turbulent natural convection heat transfer in an asymmetrically heated, vertical parallel-plate channel
journal, October 1997

Vertical-channel natural convection spanning between the fully-developed limit and the single-plate boundary-layer limit
journal, October 1985

Natural Circulation Loops
journal, November 1988