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Title: Integrated positron emission particle tracking (PEPT) and X-ray computed tomography (CT) imaging of flow phenomena in twisted tape swirl flow

Journal Article · · Experiments in Fluids

Abstract A combined positron emission particle tracking (PEPT) and X-ray computed tomography (CT) technique is presented, and its utility is demonstrated through investigation of flow in a pipe with twisted tape swirl insert with varying flow conditions (diameter-based Reynolds numbers 16,300–63,300). A description of this technique is given, as well as data handling practices used to relate geometric information captured by CT to fluid flow data gathered via PEPT. It is found that the CT component is readily capable of capturing the stainless steel insert geometry in this present system, but the use of combined plastic and metal materials leads to artifacts in imaging of the plastic surface. Nonetheless, CT data are related to PEPT flow measurements, and average velocity fields are calculated via a pseudo-framing and interpolation scheme and used to visualize and interrogate key flow phenomena within the system. Radial velocity profiles of the mean flow characteristics are seen to collapse to a nearly common form across all flow conditions considered. Helical vortices are seen propagating through the flow field, generated by bypass flow around the gap between the insert and pipe wall, with additional coherent secondary flow structures seen in the higher Reynolds number cases. These findings enhance the understanding of the mixing mechanisms in these swirl flows and encourage the continued development of PEPT-CT methodologies for 3D flow measurements in optically inaccessible systems.

Sponsoring Organization:
USDOE
Grant/Contract Number:
AC05-00OR22725
OSTI ID:
2426671
Alternate ID(s):
OSTI ID: 2429827
Journal Information:
Experiments in Fluids, Journal Name: Experiments in Fluids Journal Issue: 8 Vol. 65; ISSN 0723-4864
Publisher:
Springer Science + Business MediaCopyright Statement
Country of Publication:
Germany
Language:
English

References (45)

Numerical Analysis of FLiBe Laminar Convective Heat Transfer Characteristics in Tubes Fitted With Coaxial Cross Twisted Tape Inserts journal September 2020
Whole-body tracking of single cells via positron emission tomography journal June 2020
Positron Emission Particle Tracking of Granular Flows journal June 2020
Positron Emission Particle Tracking (PEPT) for the analysis of water motion in a domestic dishwasher journal January 2015
Friction and Forced Convection Heat-Transfer Characteristics in Tubes With Twisted Tape Swirl Generators journal February 1964
Compact high-resolution gamma-ray computed tomography system for multiphase flow studies journal March 2013
Coregistered positron emission particle tracking (PEPT) and X-ray computed tomography (CT) for engineering flow measurements journal March 2023
Fundamental limits of spatial resolution in PET journal August 2011
Experimental investigation of the swirling flow and the helical vortices induced by a twisted tape inside a circular pipe journal March 2009
Positron emission particle tracking in pulsatile flow journal April 2017
Heat Transfer and Pressure Drop Correlations for Twisted-Tape Inserts in Isothermal Tubes: Part I—Laminar Flows journal November 1993
ITER tungsten divertor design development and qualification program journal October 2013
Vortex detection criteria assessment for PIV data in rotorcraft applications journal July 2020
Heat Transfer and Pressure Drop Correlations for Twisted-Tape Inserts in Isothermal Tubes: Part II—Transition and Turbulent Flows journal November 1993
A review study on twisted tape inserts on turbulent flow heat exchangers: The overall enhancement ratio criteria journal July 2014
Direct Numerical Simulation of the Flow Through a Randomly Packed Pebble Bed journal January 2020
A novel clustering approach to positron emission particle tracking
  • Wiggins, Cody; Santos, Roque; Ruggles, Arthur
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 811 https://doi.org/10.1016/j.nima.2015.11.136
journal March 2016
A Lagrangian study of liquid flow in a reverse-flow hydrocyclone using positron emission particle tracking journal January 2015
Characterisation of solid hydrodynamics in a three-phase stirred tank reactor with positron emission particle tracking (PEPT) journal April 2022
Influence of twisted tape inserts on energy and exergy performance of an evacuated Tube-based solar air collector journal September 2021
Performance Evaluation of a High-Resolution Nonhuman Primate PET/CT System journal July 2019
Turbulent Flows book July 2012
Investigation of turbulent fluid flows in stirred tanks using a non-intrusive particle tracking technique journal February 2016
Particle tracking velocimetry in liquid gallium flow around a cylindrical obstacle journal June 2022
Experimental investigation of Lagrangian structure functions in turbulence journal August 2009
Tomographic pulse wave ultrasonic Doppler method for cross-sectional velocity distribution imaging of dispersed oil-water two-phase flow journal April 2022
A review on twisted tape inserts for enhancing the heat transfer journal January 2022
Positron emission particle tracking - a technique for studying flow within engineering equipment
  • Parker, D. J.; Broadbent, C. J.; Fowles, P.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 326, Issue 3 https://doi.org/10.1016/0168-9002(93)90864-E
journal March 1993
Experiment attributes to establish tube with twisted tape insert performance cooling plasma facing components journal November 2015
Refractive-index-matched polymer for experimental fluid dynamics in water journal November 2021
Bias in particle tracking acceleration measurement journal October 2018
Effect of tube-tape clearance on heat transfer for fully developed turbulent flow in a horizontal isothermal tube journal April 1996
Recent advances in positron emission particle tracking: a comparative review journal January 2022
Qualification of multiple-particle positron emission particle tracking (M-PEPT) technique for measurements in turbulent wall-bounded flow journal August 2019
MRV challenge 2: phase locked turbulent measurements in a roughness array journal January 2023
Noninvasive interrogation of local flow phenomena in twisted tape swirled flow via positron emission particle tracking (PEPT) journal February 2022
Experimental Lagrangian acceleration probability density function measurement journal June 2004
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
Investigation of hydrodynamics in bubble column with internals using radioactive particle tracking (RPT) journal June 2017
A numerical study on helical vortices induced by a short twisted tape in a circular pipe journal March 2015
Investigation of flow behavior in a refrigerator machine room using magnetic resonance velocimetry journal November 2023
Flow visualization in a pebble bed reactor experiment using PIV and refractive index matching techniques journal November 2008
Investigation of Pressure Drop Calculation for Twisted Tape Swirl Tubes by Conventional Channel Flow Correlations with Fusion Applications journal April 2021
A feature point identification method for positron emission particle tracking with multiple tracers
  • Wiggins, Cody; Santos, Roque; Ruggles, Arthur
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 843 https://doi.org/10.1016/j.nima.2016.10.057
journal January 2017
Magnetic resonance velocity imaging of gas flow in a diesel particulate filter journal February 2017