"The flow in the vicinity of an enclosed rotating blade near the ground was studied both analytically and experimentally. Experimental results were obtained by making pitot tube traverses across the face of the housing but gave only a qualitative indication of the velocity distribution. Tufts of strings were used to locate the flow directions in the vicinity of the ground and the housing. The two dimensional potential flow solution was found to yield unreasonable results for this flow configuration due to viscous and rotative effects. The three-dimensional Navier-Stokes equations were solved numerically by using the successive underrelaxation method. The results indicated that there is inflow in the upper part of the entrance region while outflow exists in the lower part. The effect of rotation sets up vortex type flows under the housing. Variable boundary conditions were applied at the entrance of the housing to simulate speed and geometry changes for the blade. The results from the solutions to the Navier-Stokes equations were in qualitative agreement with the observed experimental results"--Abstract, page 1.
Howell, Ronald H. (Ronald Hunter), 1935-
Selberg, B. P.
Scrivner, Jack M., 1929-2004
Mechanical and Aerospace Engineering
M.S. in Mechanical Engineering
University of Missouri--Rolla
viii, 65 pages
© 1970 Tze-Lien Liang, All rights reserved.
Thesis - Open Access
Air flow -- Mathematical models
Electric machinery -- Rotors
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Electronic OCLC #
Link to Catalog Record
Liang, Tze-Lien, "On the flow near an enclosed rotating blade in the neighborhood of the ground" (1970). Masters Theses. 7087.