Effect of rib angle on local heat/mass transfer distribution in a two-pass rib-roughened channelThe naphthalene sublimation technique is used to investigate the heat transfer characteristics of turbulent air flow in a two-pass channel. A test section that resembles the internal cooling passages of gas turbine airfoils is employed. The local Sherwood numbers on the ribbed walls were found to be 1.5-6.5 times those for a fully developed flow in a smooth square duct. Depending on the rib angle-of-attack and the Reynolds number, the average ribbed-wall Sherwood numbers were 2.5-3.5 times higher than the fully developed values.
Document ID
19880023806
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Chandra, P. R. (Texas A&M Univ. College Station, TX, United States)
Han, J. C. (Texas A&M Univ. College Station, TX, United States)
Lau, S. C. (Texas A & M University College Station, United States)