THE EXPERIMENTAL INVESTIGATION ON HEAT TRANSFER OF THE DRUG-REDUCTION SURFACE
The experimental results based on the Reynolds analogy investigated the flow-resistance and heat transfer characteristics of small longitudinal grooved surfaces in the rectangular channel are presented. The experimental results indicates that the small longitudinal grooved surfaces of h=s=0.5mm has obviously drag-reduction effect within the range of Reynolds number from 10000 to 80000, and its drag-reduction is decreasing as the increase of Reynolds number. The maximum drag-reduction effect is about 5％. When the range of Reynolds number is from 10000 to 30000, the drag-reduction surface weaken the heat transfer of surface, When the range of Reynolds number is from 30000 to 80000, the drag-reduction surface enhance the heat transfer of surface. The heat transfer enhancement ratio is increasing with the growing of Reynolds number. the maximum of heat transfer enhancement is 17％,and the maximum of heat transfer decrease is 23％.
Wu Hong Wang Jiao Liu Kun
National Key Lab on Aero-engines, School of Jet Propulsion, Beijing University of Aeronautics and Astronautics
国际会议
昆明
英文
346-350
2006-09-18（万方平台首次上网日期，不代表论文的发表时间）