Analog Computer Construction of Conformal Maps in Fluid Dynamics

摘要

A general‐purpose electronic analog computer has been used extensively to construct the streamlines around two‐dimensional airfoil shapes immersed in an incompressible, nonrotating, nonviscous fluid. The computer generates a circular Lissajous pattern on a plotting table, and then transforms the coordinates of the circle into the airfoil shape by a conformal transformation. Two samples of the variety of airfoil shapes so constructed are shown. The accuracy of the process, which has been checked by a digital computer and a desk calculator, is quite satisfactory; the speed of the actual mapping process is highly advantageous to thorough exploration of a variety of airfoil shapes.