Abstract

The three-dimensional problem of compressible potential flow in a bend of a circular duct is studied by means of a perturbation method. As perturbation parameter is used the quotient between the radius of the duct and the radius of curvature of the duct, and the solution includes terms of the first and second order of this parameter. Numerical calculations have been performed for the values 0.2 and 0.1 of the perturbation parameter, and the plotted result shows how the axial velocity distribution changes from the straight to the curved region of the duct.

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