Non-Aligned Magnetogasdynamic Flows past a Symmetrical Airfoil

概要

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The steady, plane flow of ideal gas of low electrical conductivity with uniform magnetic field past a symmetrical airfoil is considered on the basis of the linearized theory. The magnetic Reynolds number and the Alfven Mach number are assumed to be infinitesimal but the interaction parameter N and the angle θ between the magnetic field and the main stream may be arbitrary, as well as the Mach number not so close to unity. The exact expressions of the velocity and pressure distributions on the airfoil are presented, and it is shown that no lift but the local flow slip behind the trailing edge appears when the flow is non-aligned. The simple asymptotic expressions are presented for large N and small θ. The critical behaviour of the flow field adjacent to the airfoil and the corresponding change of the drag force are discussed thereby. The critical change occurs in the vicinity of the factor N^<1/2> sinθ∼1.
1975-11-15