Abstract
In this paper, the enhancement of heat transfer due to unsteady flow in channels with in-line and staggered baffles is investigated through the numerical solution of the governing unsteady fluid flow and energy equations with periodicity in the streamwise direction. For the inline configuration, the flow becomes naturally unsteady at a critical Reynolds number (Q/v) around 110. For the staggered case, this value is around 200. Significant increases in heat transfer rate are observed once the flow becomes unsteady. Results for several Reynolds numbers up to 500 are presented. The present results can be valuable to the design and operation of compact heat exchangers used in process industry.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 585-591 |
| Number of pages | 7 |
| Journal | Journal of Heat Transfer |
| Volume | 118 |
| Issue number | 3 |
| DOIs | |
| State | Published - Aug 1996 |
Keywords
- Flow separation
- Flow transition
- Forced convection
ASJC Scopus subject areas
- Materials Science(all)
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering
Fingerprint Dive into the research topics of 'Unsteady heat transfer in baffled channels'. Together they form a unique fingerprint.
Cite this
Wang, G., Stone, K., & Vanka, S. P. (1996). Unsteady heat transfer in baffled channels. Journal of Heat Transfer, 118(3), 585-591. https://doi.org/10.1115/1.2822672