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정우원(W. W. Jeong),이계한(K. H. Rhee),장안식(A. S. Jang),박경열(K. R. Park),전경진(K. J. Chun) 한국정밀공학회 2006 한국정밀공학회 학술발표대회 논문집 Vol.2006 No.5월
When a water jet is injected on the body surface, the pressure and shear stress on the surface are important physical parameters in determining the body surface wash out and physical stimulus. We used the force plate in order to measure the surface average pressure for different nozzle types and distances between a nozzle and a plate. We used the nozzles with a hole dimeter of 1.8, 2.9, 3.2㎜, and the shower heads with 10 holes (hole diameter, 1㎜) and 20 holes (hole diameter, 1㎜). The distances between a nozzle and a plate was 10, 20, 30, 40㎝. The results showed that the surface forces were not affected by the distances between a nozzle and a plate. Further numerical studies will be performed to predict wall shear stress based on the measured pressure data.