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Direct numerical simulation of physiological pulsatile flow through a stenotic channel

DOI: 10.1615/ICHMT.2012.ProcSevIntSympTurbHeatTransfPal.1270
pages 1226-1238

Abul Khair
Dept. of Mechanical Engineering, Univ. of Manitoba, Winnipeg, MB, R3T 5V6, Canada

Afzal Hossain
Dept. of Mechanical Engineering, Univ. of Manitoba, Winnipeg, MB, R3T 5V6, Canada

Bing-Chen Wang
Department of Mechanical & Manufacturing Engineering, University of Manitoba, Winnipeg, MB, R3T 5V6, Canada

David C.S. Kuhn
Department of Mechanical and Manufacturing Engineering University of Manitoba Winnipeg, MB, Canada R3T 5V6

Mamun Molla
Dept. of Mechanical Engineering, Univ. of Manitoba, Winnipeg, MB, R3T 5V6, Canada

Resumo

In this paper, direct numerical simulation (DNS) is used to simulate the physiological pulsatile flow in a constricted channel to gain insight into the transition-to-turbulent flow in an artificial arterial stenosis. An in-house code has been developed using OpenMP and DNS was performed based on available high performance shared memory parallel computing facilities. The Womersley number tested was fixed to 10.5 and the Reynolds number was varied from 800 to 1800 in the simulation. The physical characteristics of the flow field have been thoroughly analyzed in terms of the mean streamwise velocity, the root mean square (RMS) velocities, turbulence kinetic energy (TKE), viscous wall shear stresses and wall pressure.

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