Wind Tunnel Testing on an Axisymmetric Body at Angles of Attack Part V - Boundary Layer Profile Measurement on an Axisymmetric Body

摘要

Boundary layer on the cylindrical portion of anudAxisymmetric underwater body is measured at threeudaxial locations for the zero incidence of the model.udThe displacement and momentum thicknesses and henceudthe shape factor are computed from the measuredudvelocity profiles. The boundary layer is thicknerudfor the case of Blunt nose as compared to ogive nose udconfiguration. Systematic growth of the boundary layer, along the length of the model is observed. The, effect of free stream velocity on the mean velocity profiles is seen to be negligible. The values of shaper factor obtained in this study indicate that the boundary layer on the model is turbulent one