HIGH-FIDELITY COMPUTATIONAL ASSESSMENT OF AERO-THERMAL PERFORMANCE AND THE REYNOLDS’ ANALOGY FOR ADDITIVELY MANUFACTURED ANISOTROPIC SURFACE ROUGHNESS

TO Jelly; WA Rowin; N Hutchins; D Chung; K Tanimoto; T Oda; RD Sandberg

Conference Proceedings

HIGH-FIDELITY COMPUTATIONAL ASSESSMENT OF AERO-THERMAL PERFORMANCE AND THE REYNOLDS’ ANALOGY FOR ADDITIVELY MANUFACTURED ANISOTROPIC SURFACE ROUGHNESS

TO Jelly, WA Rowin, N Hutchins, D Chung, K Tanimoto, T Oda, RD Sandberg

Proceedings of the ASME Turbo Expo | AMER SOC MECHANICAL ENGINEERS | Published : 2023

DOI: 10.1115/GT2023-102138

Abstract

Direct numerical simulations of incompressible turbulent forced convection over irregular, anisotropic surface roughness in a pressure-driven plane channel flow have been performed. Heat transfer was simulated by solving the passive scalar transport equation with Prandtl number Pr = 0.7. The roughness topographies under investigation here are based on an X-ray computed tomography scan of an additively manufactured internal cooling passage, which had an irregular, multi-scale and mildly non-Gaussian height distribution. Three different roughness topographies and three different friction Reynolds numbers (Reτ = 395, 590, 720) were considered, along with reference smooth-wall simulations at mat..

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University of Melbourne Researchers

Tom Jelly Author

Wagih Abu Rowin Author

Nicholas Hutchins Author

Daniel Chung Author

Related Projects (1)

UNDERSTANDING ROUGH-WALL FLOWS AND TURBULENT MIXING FOR IMPROVED MODELS

In the absence of a reliable predictive capability for turbulent heat transfer, design engineers are currently forced to incorporate safety ..

Grants

Awarded by Australian Government

Funding Acknowledgements

This work was supported by the ARC Linkage Project (LP180100712) in collaboration with MHI and used resources and services from the National Computational Infrastructure, which is supported by the Australian Government.