A theoretical study of the moment on a body in a compressible fluid (1939)
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eodorsen's method (reference 1) of extending Since the outer boundary is arbitrary, it may bo chosen Lagally's formula for the force on a body in an incom- to be a large circle so that the vector product [r n]=0. pressible fluid to a compressible fluid may be used to Hence obtain the corresponding… … Figure 1.—Directions of tangent and normal on a contour. follows that M= fo p[t v] (v n)ds+f, [r v] div pvdS (3) the far field. Then the moment exerted on the body - Jl P{r[vcmi \]}dS with respect to the origin of the coordinate system is where y*f p[r v](v n)as=0 since (v n)=0 everywhere on given…
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