Publishing House SB RAS:

Publishing House SB RAS:

Address of the Publishing House SB RAS:
Morskoy pr. 2, 630090 Novosibirsk, Russia

Advanced Search

Thermophysics and Aeromechanics

2012 year, number 6

Experimental study of temperature field evolution in the channel with corrugated wall at a jump-like change in the heat flux

B.V. Perepelitsa
Kutateladze Institute of Thermophysics SB RAS, Novosibirsk, Russia
Keywords: temperature, nonstationary heat transfer, turbulence, wall, ribs, flow, heat exchanger
Pages: 689-696


Results of experimental investigation of nonstationary temperature field in the flow and on the surface of the channel with corrugated wall are presented at a jump-like change of heat release in time. The changes were performed at the air flow in a rectangular channel, whose one heated wall was made as a plate with triangular corrugation oriented at 45º relative to the main flow direction. The microthermocouples with the thickness of below 10 microns were used to perform these changes. Investigations revealed typical regularities of temperature evolution in the flow and along the perimeter of the heated rib. Experimental data on time-temperature dependence are approximated well by the exponential function.