We present a new framework to quantitatively describe energy exchange in high-speed turbulent flows, also including the hypersonic regime. Governing equations are introduced which control the transport of the mean-field kinetic energy (km ), the turbulence kinetic energy (kt ), the mean-field internal energy (em ), and the turbulence internal energy (et ). The common terms in the transport equations are found to represent energy exchanges and interactions among km , kt , em , and et . The routes of energy exchange are then highlighted and quantified in hypersonic boundary-layer flow, with special attention paid to effects of wall cooling.

Energy exchanges in hypersonic flows / Fan, Yitong; Li, Weipeng; Pirozzoli, Sergio. - In: PHYSICAL REVIEW FLUIDS. - ISSN 2469-990X. - 7:9(2022). [10.1103/PhysRevFluids.7.L092601]

Energy exchanges in hypersonic flows

Sergio Pirozzoli
2022

Abstract

We present a new framework to quantitatively describe energy exchange in high-speed turbulent flows, also including the hypersonic regime. Governing equations are introduced which control the transport of the mean-field kinetic energy (km ), the turbulence kinetic energy (kt ), the mean-field internal energy (em ), and the turbulence internal energy (et ). The common terms in the transport equations are found to represent energy exchanges and interactions among km , kt , em , and et . The routes of energy exchange are then highlighted and quantified in hypersonic boundary-layer flow, with special attention paid to effects of wall cooling.
2022
hypersonic flow; friction; heat transfer
01 Pubblicazione su rivista::01a Articolo in rivista
Energy exchanges in hypersonic flows / Fan, Yitong; Li, Weipeng; Pirozzoli, Sergio. - In: PHYSICAL REVIEW FLUIDS. - ISSN 2469-990X. - 7:9(2022). [10.1103/PhysRevFluids.7.L092601]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/1666131
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