Abstract
It is well known that the static pressure distribution of an axisymmetric body operating within the boundaries of a duct such as a wind tunnel or water tunnel test section is altered from that observed in a free stream because of solid blockage and horizontal buoyancy effects. Because potential-flow solutions can account only for the solid blockage, an auxiliary analysis must be performed to account for the viscous (horizontal buoyancy) effects. One such analysis has been performed by the present author [1],2 where it was assumed that boundary-layer development occurred in a natural zero-pressure-gradient-like manner over the test body and duct walls. In this paper, a modification of that analysis is presented which permits analysis of bodies with boundary-layer control. In addition to the theoretical formulation, a numerical example is presented to illustrate the effect on the pressure distribution of a 0.318-m-diameter (1.043 ft) body with surface suction operating in a 1.22-m-diameter (4.00 ft) duct.
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