Effect of cavity size on confined slot jet impingement cooling

Mohammad O. Hamdan, Ahmed Y. Hayek

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Citations (Scopus)

Abstract

The paper investigates experimentally the heat transfer characteristic for internal flow inside a semicircular channel due to confined slot-jet impingement. The effect of varying the channel diameters to slot-jet width is evaluated. The average and local Nusselt numbers is calculated by reporting the heater thermal map obtained via an infrared camera, the inlet/ outlet flow temperature are measured via thermocouples, the flow rates are reported via rotameter and the pressure drop is measured across the inlet and outlet flow via pressure transducers. The single enclosed jet flow is used to create a double cyclones inside the semicircular channel to promote heat transfer at different jet Reynolds numbers (= 100 to 1,000). A semicircular cavity with variable diameter are used to evaluate the effect of channel size on the cyclone flow which directly affect the heat transfer. It is found that the cavity size has two opposite effects on the heat transfer. In one side, as cavity size decreases, the distance between the jet and the curved surface decreases and hence heat transfer improves. On the other hand, as the cavity size increases the swirl size inside the cavity increases and hence heat transfer improves.

Original languageEnglish
Title of host publicationASME 2013 Heat Transfer Summer Conf. Collocated with the ASME 2013 7th Int. Conf. on Energy Sustainability and the ASME 2013 11th Int. Conf. on Fuel Cell Science, Engineering and Technology, HT 2013
DOIs
Publication statusPublished - 2013
EventASME 2013 Heat Transfer Summer Conference, HT 2013 Collocated with the ASME 2013 7th International Conference on Energy Sustainability and the ASME 2013 11th International Conference on Fuel Cell Science, Engineering and Technology - Minneapolis, MN, United States
Duration: Jul 14 2013Jul 19 2013

Publication series

NameASME 2013 Heat Transfer Summer Conf. Collocated with the ASME 2013 7th Int. Conf. on Energy Sustainability and the ASME 2013 11th Int. Conf. on Fuel Cell Science, Engineering and Technology, HT 2013
Volume2

Other

OtherASME 2013 Heat Transfer Summer Conference, HT 2013 Collocated with the ASME 2013 7th International Conference on Energy Sustainability and the ASME 2013 11th International Conference on Fuel Cell Science, Engineering and Technology
Country/TerritoryUnited States
CityMinneapolis, MN
Period7/14/137/19/13

ASJC Scopus subject areas

  • Fluid Flow and Transfer Processes

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