Imperial College London
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ProfessorRaadIssa

Faculty of Engineering, Department of Mechanical Engineering

Emeritus Professor
 
 
 
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Contact

 

+44 (0)20 7594 7038r.issa

 
 
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Location

 

662BCity and Guilds BuildingSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@inproceedings{Sebilleau:2015,
author = {Sebilleau, F and Issa, RI and Walker, SP and Kansal, A and Maheshwari, NK},
pages = {1275--1288},
title = {CFD and experimental analysis of single phase buoyancy driven counter-current flow in a pipe},
year = {2015}
}
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RIS format (EndNote, RefMan)

TY  - CPAPER
AB  - In the present paper, we study single-phase counter-current flow in a circular pipe as a model problem that is representative of flows occurring under various circumstances in a reactor primary loop, for example when emergency-cooling (ECCS) water is injected in the hot leg or when cooler fluid flows from the steam generator in the hot leg. In order to isolate the complexity of the turbulent mixing generated by buoyancy driven single-phase counter current flow, an experimental rig was built at the Bhabha Atomic Research Center (BARC) to validate CFD model predictions. This new rig is composed of two tanks of water linked by an inclined circular pipe. Initially the upper tank is filled with cold water and the lower one with heated water and the different-density fluids are allowed to mix under the influence of gravity. In this paper, thermocouple measurements of temperature at several locations in the rig are presented for several temperature differences and tilt angles. These experimental measurements are compared with state of the art highly-resolved large eddy simulation (LES). These LES computations (carried out with the commercial CFD package STAR-CCM+) give detailed information on the behaviour of the turbulence in such flow as well as serve to assess the performance of some uRANS two-equation eddy viscosity models that are also tested.
AU  - Sebilleau,F
AU  - Issa,RI
AU  - Walker,SP
AU  - Kansal,A
AU  - Maheshwari,NK
EP  - 1288
PY  - 2015///
SP  - 1275
TI  - CFD and experimental analysis of single phase buoyancy driven counter-current flow in a pipe
ER  -
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