Title

Numerical Simulation Of Microscale Slot Jet Impingement Cooling Of A Surface With Constant Wall Heat Flux Using Dsmc-Ip

Abstract

The standard Direct Simulation Monte Carlo (DSMC) simulation is not capable of producing statistically meaningful results for low Re flows which are often encountered in microflows. Therefore, the non-isothermal Information Preservation (IP) algorithm is utilized in this study to predict the flow structure and the heat transfer characteristics of a microscale, slot, and confined jet impinging on a flat surface with uniform temperature boundary condition. The flow Knudsen number based on the slot width is in the slip flow and the lower transition regime. The jet is impinging at jet-to-target surface gaps normalized by slot width (H/W) of 0.25, 1 and 2 at a pressure ratio of 2.0. The effects of impingement gap (H/W) on flow structure and heat transfer are investigated. The velocity, pressure and Nusselt number distributions on the impingement target surface are presented. The results are compared to corresponding conventional large-scale values. Copyright © 2008 by ASME.

Publication Date

12-1-2008

Publication Title

Proceedings of the 6th International Conference on Nanochannels, Microchannels, and Minichannels, ICNMM2008

Issue

PART A

Number of Pages

137-143

Document Type

Article; Proceedings Paper

Personal Identifier

scopus

DOI Link

https://doi.org/10.1115/ICNMM2008-62354

Socpus ID

77952656099 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/77952656099

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