Forced convection in micro-channel with synthetic jet: Effect of operating frequency

Ann Lee*, Victoria Timchenko, Guan H. Yeoh, John A. Reizes

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference proceeding contributionpeer-review

2 Citations (Scopus)

Abstract

A three-dimensional computational model has been developed to investigate the cooling effect on the microchip of synthetic jet interacting with a cross-flow in a micro-channel. The conjugate problem is solved by determining the temperature distributions in a heated solid and the fluid flowing in the micro-channel which cools it, thereby simulating the application to a microchip. A parametric study was performed on a fixed geometry by using 1 MWm -2 heat flux at the surface of the silicon wafer to investigate the effect of frequency of the jet at a constant Reynolds number, that is the amplitude is reduced in proportion to the increase in frequency. The hot region in the silicon wafer resulting from the use fluid flowing undisturbed in a micro-channel, are removed when the synthetic jet is switched on thereby significantly lowering the maximum temperature in the wafer. Contrary to the two-dimensional case, there is little difference in the cooling performance when the jet was driven at different frequencies in three-dimensional configuration. This is illustrated by the fact in the end of the simulations at a jet Reynolds number of 40, the maximum temperature in the substrate was 0.5 K lower at 1120 Hz than at 560 Hz and 1 K lower than at 280 Hz.

Original languageEnglish
Title of host publicationASME 2012 10th Int. Conf. on Nanochannels, Microchannels, and Minichannels Collocated with the ASME 2012 Heat Transfer Summer Conference and the ASME 2012 Fluids Engineering Division Sum, ICNMM 2012
Place of PublicationNew York
PublisherAmerican Society of Mechanical Engineers (ASME)
Pages257-266
Number of pages10
ISBN (Print)9780791844793
DOIs
Publication statusPublished - 2012
Externally publishedYes
EventASME 2012 10th Int. Conf. on Nanochannels, Microchannels, and Minichannels, ICNMM 2012 Collocated with the ASME 2012 Heat Transfer Summer Conf. and the ASME 2012 Fluids Engineering Division Sum, ICNMM 2012 - Rio Grande, Puerto Rico
Duration: 8 Jul 201212 Jul 2012

Other

OtherASME 2012 10th Int. Conf. on Nanochannels, Microchannels, and Minichannels, ICNMM 2012 Collocated with the ASME 2012 Heat Transfer Summer Conf. and the ASME 2012 Fluids Engineering Division Sum, ICNMM 2012
CountryPuerto Rico
CityRio Grande
Period8/07/1212/07/12

Keywords

  • Conjugate heat transfer
  • Micro-channel
  • Synthetic jet

Fingerprint

Dive into the research topics of 'Forced convection in micro-channel with synthetic jet: Effect of operating frequency'. Together they form a unique fingerprint.

Cite this