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On the effects of the free-stream turbulence on the heat transfer from a sphere

Author
Rodriguez, I.; Lehmkuhl , O.; Soria, M.
Type of activity
Journal article
Journal
International journal of heat and mass transfer
Date of publication
2021-01
Volume
164
First page
120579/1
Last page
120579/18
DOI
10.1016/j.ijheatmasstransfer.2020.120579
Project funding
Science and technology of Space instruments for characterizing the Martian environment within multiple NASA missions: 3D wind sensor
TRA2017-88508-R- Towards High-fidelity methodologies for INnovative AIRcraft design
Repository
http://hdl.handle.net/2117/334246 Open in new window
URL
https://www.sciencedirect.com/science/article/pii/S0017931020335158?dgcid=rss_sd_all Open in new window
Abstract
Free-stream turbulence is present in many engineering applications and is known to affect both bluffbody aerodynamics and heat transfer. In this work, its effects on the heat transfer and the near wake behind a sphere are studied. To do this, direct and large-eddy simulations of the flow at the moderate Reynolds numbers of Re = 1000 and Re = 1e4 , with levels of incoming turbulence up to 10% and a length scale of O(D ) ,D being the sphere diameter, are performed. At the Reynolds numbers under co...
Citation
Rodriguez, I.; Lehmkuhl, O.; Soria, M. On the effects of the free-stream turbulence on the heat transfer from a sphere. "International journal of heat and mass transfer", 2021, vol. 164, p. 120579/1-120579/18.
Keywords
Free-stream turbulence, Heat transfer, Nusselt number, Sphere, Turbulent thermal wake
Group of research
TUAREG - Turbulence and Aerodynamics in Mechanical and Aerospace Engineering Research Group

Participants