Concerning Analytic Solutions of the Generalized Potential Equation 1)1)Presented to the American Mathematical Society in September 1948; given limited circulation as U.S. Naval Ordnance Laboratory Memorandum 9892 (October, 1948).

The Stokes flow problem is concerned with fluid motion about an obstacle when the motion is such that inertial effects can be neglected. This problem is considered here for the case in which the obstacle (or configuration of obstacles) has an axis of symmetry, and the flow at distant points is uniform and parallel to this axis. The differential equation for the stream function ψ then assumes the form L2−1ψ = 0, where L−1 is the operator which occurs in axiallysymmetric flows of the incompressible ideal fluid. This is a particular case of the fundamental operator of A. Weinstein's generalized axially symmetric potential theory. Using the results of this theory and theorems regarding representations of the solutions of repeated operator equations, the authors (1) give a general expression for the drag of an axially symmetric configuration in Stokes flow, and (2) indicate a procedure for the determination of the stream function. The stream function is found for the particular case of the lens-shaped body.Explicit calculation of the drag is difficult for the general lens, without recourse to numerical procedures, but is relatively easy in the case of the hemispherical cup. As examples illustrative of their procedures, the authors briefly consider three Stokes flow problems whose solutions have been given previously.

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Concerning Analytic Solutions of the Generalized Potential Equation 1)1)Presented to the American Mathematical Society in September 1948; given limited circulation as U.S. Naval Ordnance Laboratory Memorandum 9892 (October, 1948).

Cited by 5 publications

References 2 publications

Entire solutions of a class of differential equations of mixed type

Entire solutions of a class of differential equations of mixed type

A well posed boundary value problem in transonic gas dynamics

The Stokes flow problem for a class of axially symmetric bodies

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