Thermal Performances in Ribbed Rectangular Convergent and Divergent Channels

Abstract:

The rectangular convergent/divergent channels with one sided ribbed surface only have the inclination angles of 0.72^oand1.43^o at which the ribbed wall is manufactured with a fixed rib height ( e) =10 mm and the ratio of rib spacing (p) to height ( e) =10. The comparison shows that among the four channels (D_ho/D_hi =0.67, 0.86, 1.16, and1.49) the divergent channel of D_ho/D_hi =1.49 has the highest thermal performance at the identical mass flow rate, and the divergent channel of D_ho/D_hii =1.16 has the highest at the identical pumping power and static pressure drop.

• Periodical: Applied Mechanics and Materials (Volumes 479-480)
• Pages: 249-253
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.479-480.249
• Online since: December 2013
• Authors: M.S. Lee, S.S. Jeong, Soo Whan Ahn
• Keywords: Friction Factor, Heat Transfer, Ribbed Rectangular Convergent/Divergent Channel, Thermal Performance Comparison

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