Subsonic Flow Past a Slender Body of Revolution Placed Eccentrically in a Tube

抄録

For a subsonic flow, the surface pressure coefficients of a slender body of revolution, which is placed eccentrically in a tube, have been calculated by means of M²_∞-expansion-method and as slender body in slender tube theory. The assumptions used in this calculation are as follows : (1) The fluid is inviscid. (2) The fluid is irrotational, as the eccentricity is small. The results obtained here are as follows : (1) With this method, analytic solutions can be easily obtained to a required higher order approximation. (2) When the uniform stream Mach number is 0.3 and the blockage ratio is 0.4, the absolute values of the surface pressure coefficient in the neighbourhood of the center cross section of the body are about 20 percent larger than those of incompressible flow. (3) As for the body shapes, that of parabolic spindle takes a larger value for the normal force coefficient than other body shapes.