Abstract
A transonic small-disturbance equation retaining all second- and some higher-order terms (i.e., the TSDH equation) is proposed for computing transonic flows over blunt leading edge airfoils in subsonic and supersonic free streams. Three difference schemes and relaxation techniques are studied numerically for obtained converged solutions, of which two succeed for both subsonic and supersonic free streams; the other can only be applied to subsonic free streams. Comparisons with reported results and experiments are made for the DSMA 523 and NACA 0012 airfoils. The agreements are generally satisfactory.
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