Heat transfer and friction factors in the ribbed square convergent and divergent channels

Lee, M. S.; Ahn, Soo Whan

doi:10.1007/s00231-015-1630-3

Cited by 5 publications

(1 citation statement)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The Reynolds number dependences of total friction Contrary to our previous work [7] that the inclined wall channel would have greater total friction factors than those of straight cross section channel, the total friction factors in the ribbed divergent channel of D ho /D hi =1.16 were somewhat lower than in the straight ribbed channel of D ho /D hi =1.0. It would be due to the fact that the slight divergent channel wall with 0.72-deg-inclination generates very low static pressure drops as shown in Fig.…”

Section: Resultscontrasting

confidence: 76%

Heat Transfer and Frictions in the Rectangular Divergent Channel with Ribs on One Wall

Lee¹,

Ahn²

2016

International Journal of Aeronautical and Space Sciences

View full text Add to dashboard Cite

An investigation of ribbed divergent channel was undertaken to determine the effect of rib pitch to height ratio on total friction factor and heat transfer results in the fully developed regime. The ribbed divergent rectangular channel with the channel exit hydraulic diameter (Dho) to inlet channel hydraulic diameter (Dhi) ratio of 1.16 with wall inclination angle of 0.72 deg, at which the ratios (p/e) of 6,10, and 14 are considered. The ribbed straight channel of Dho/Dhi=1.0 were also used. The ribbed divergent wall is manufactured with a fixed rib height (e) of 10 mm and the ratio of rib spacing (p) to height 6, 10, and 14. The measurement was run with range of Reynolds numbers from 24,000 to 84,000. The comparison shows that the ratio of p/e=6 has the greatest thermal performance in the divergent channel under two constraints; identical mass flow rate and identical pressure drop.

show abstract

Section: Resultscontrasting

confidence: 76%