Open Access
ARTICLE
HEAT TRANSFER IN A MICROTUBE OR MICROCHANNEL WITH PROTRUSIONS
Muhammad M. Rahman*, Phaninder Injeti
Department of Mechanical Engineering, University of South Florida, Tampa, Florida 33620, USA
* Corresponding Author: Tel: (813)974-5625, Fax: (813)974-3539, Email:
Frontiers in Heat and Mass Transfer 2011, 2(1), 1-9. https://doi.org/10.5098/hmt.v2.1.3003
Abstract
This paper presents the effects of protrusions on heat transfer in a microtube and in a two-dimensional microchannel of finite wall thickness. The
effects of protrusion shape, size, and number were investigated. Calculations were done for incompressible flow of a Newtonian fluid with
developing momentum and thermal boundary layers under uniform and discrete heating conditions. It was found that the local Nusselt number near a
protrusion changes significantly with the variations of Reynolds number, height, width, and distance between protrusions, and the distribution of
discrete heat sources. The results presented in the paper demonstrate that protrusions can be used advantageously for the enhancement of local heat
transfer whereas the global performance may be enhanced or diminished based on the channel geometry.
Keywords
Cite This Article
Rahman, M. M., Injeti, P. (2011). HEAT TRANSFER IN A MICROTUBE OR MICROCHANNEL WITH PROTRUSIONS.
Frontiers in Heat and Mass Transfer, 2(1), 1–9.