Transition to turbulent heat transfer in heated vertical channel - Scaling analysis

Abstract : A thermally driven flow in a vertical channel with heated walls is studied through a scaling analysis and results are compared with the experimental data reported in [1]. As the geometry is symmetrical with respect to the vertical axis, the half-channel is considered. The domain is split into seven zones in which the flow behaviour results from a balance between several phenomena. This zonal analysis exhibits the main phenomena that drive the flow in each zone. The study leads to an expression of the wall temperature profile below and above the transition. An expression is given for the driving pressure that is found to increase along the channel. The increase rate is much more important above the transition due to the fluid heating in the center of the channel. Finally, The maximum Reynolds stress is expressed in terms of the mean velocity values and is found to fit well with the experimental data.
Complete list of metadatas

Cited literature [12 references]  Display  Hide  Download

https://hal.archives-ouvertes.fr/hal-01393867
Contributor : Laboratoire Cethil <>
Submitted on : Tuesday, February 13, 2018 - 3:57:01 PM
Last modification on : Wednesday, November 20, 2019 - 7:23:50 AM
Long-term archiving on : Tuesday, May 8, 2018 - 3:17:03 AM

File

IJTS_LI_2017_vol112_pp199-210_...
Files produced by the author(s)

Licence


Distributed under a Creative Commons Attribution - NonCommercial - NoDerivatives 4.0 International License

Identifiers

Citation

Yiqin Li, Christophe Daverat, Hervé Pabiou, Christophe Ménézo, Shihe Xin. Transition to turbulent heat transfer in heated vertical channel - Scaling analysis. International Journal of Thermal Sciences, Elsevier, 2017, 112, pp.199-210. ⟨10.1016/j.ijthermalsci.2016.09.036⟩. ⟨hal-01393867v2⟩

Share

Metrics

Record views

545

Files downloads

224