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The Role of Turbulence Transport in Mechanical Energy Budgets

Published version
Peer-reviewed

Repository DOI


Type

Article

Change log

Authors

Przytarski, PJ 
Lengani, D 
Simoni, D 
Wheeler, APS 

Abstract

jats:titleAbstract</jats:title> jats:pIn this article, we study the role of turbulence transport on loss prediction using high fidelity scale-resolving simulations. For this purpose, we use eight high-fidelity simulation datasets and compute flux of entropy and stagnation pressure transport equation budgets for all the cases. We find that under certain unsteady inflow conditions, the stagnation pressure coefficient is not a reliable loss metric even at low Mach number conditions. This is due to the turbulence transport terms. The impact of these terms, typically assumed to be negligible, made stagnation pressure loss coefficient underpredict loss from 0% to over 40% when compared to entropy loss coefficient for cases considered here. This effect was most pronounced for the cases with highly unsteady inflow conditions and at low Reynolds numbers.</jats:p>

Description

Keywords

4012 Fluid Mechanics and Thermal Engineering, 40 Engineering

Journal Title

Journal of Turbomachinery

Conference Name

Journal ISSN

0889-504X
1528-8900

Volume Title

146

Publisher

ASME International