SYMMETRIC STAGNATION AND WAKE FOWS PAST A SEMI-INFINITE PLATE

摘要

The class of all solutions of the Navier-Stokes equations which represent symmetric motions past a semi-infinite flat plate is constructed in the form of a double series around the edge of the plate. In contrast to the classical boundary layer equations, the NavierStokes equations emerge as a proper means to describe laminar flows past leading and trailing edges in a realistic manner and, hence, justify the great confidence which they own by derivation. Flow patterns of laminar attached or separated motions around leading and trailing edges can be derived up to very refined details from the solutions obtained. An interesting remark on the analogous needle problem is added.