Research Article

Numerical investigation of heat transfer from heat sources placed in a horizontal rectangular channel

Volume: 41 Number: 3 September 30, 2020
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Numerical investigation of heat transfer from heat sources placed in a horizontal rectangular channel

Abstract

In this study, three dimensional mixed convection heat transfer from discrete heat sources placed in a horizontal rectangular channel has been investigated numerically. 8x4 flush-mounted discrete heat sources were mounted on the lower and upper surfaces of the channel. Air is used as working fluid (Pr0.7). The heaters at the bottom and at the top wall were kept at a constant heat flux. Side walls, upper and lower walls are insulated and considered adiabatic. Nusselt number distributions and the effect of the Grashof number (5.8x106≤ Gr* ≤ 2.3x107) and Reynolds number (150 ≤ Re ≤ 971) on the buoyancy-driven secondary flow have been investigated. Distributions of velocity vectors and temperature contours have been determined by the numerical method, and the results have been presented in detail. Governing equations were solved by the control volume method using suitable boundary conditions. The numerical parametric study was made for aspect ratio of AR=8, at various Reynolds and Grashof numbers.

Keywords

References

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Details

Primary Language

English

Subjects

Engineering

Journal Section

Research Article

Authors

Publication Date

September 30, 2020

Submission Date

June 2, 2020

Acceptance Date

September 2, 2020

Published in Issue

Year 2020 Volume: 41 Number: 3

DOI

https://doi.org/10.17776/csj.747235

IZ

https://izlik.org/JA32HY58LD

Cite

RIS / Bibtex
APA
Doğan, A., Sivrioğlu, M., & Başkaya, Ş. (2020). Numerical investigation of heat transfer from heat sources placed in a horizontal rectangular channel. Cumhuriyet Science Journal, 41(3), 732-740. https://doi.org/10.17776/csj.747235

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