MAGNETIC ACCELERATION AND DECELERATION OF O-2 GAS STREAMS INJECTED INTO AIR

The study of ''magnetoaerodynamics'' is important to control air flows . The magnetically induced change in the velocity of O-2 gas streams i njected into air was quantitatively studied. Whether O-2 gas how was m agnetically accelerated or decelerated was found to depend on the sign of the magnetic field gradient applied at the O-2 outlet. The magneti cally induced change in the velocity Delta v = \v(H) - v(o)\ was found to increase by increasing the product of the magnetic intensity and i ts gradient, H (dH/dy), and lowering the velocity without the fields , v(o). The dynamics of this magnetically induced gas flow was explain ed by considering the magnetic force acting on the paramagnetic oxygen gas. The calculation shows the most efficient acceleration to occur w hen v(o) = 0 cm/s. The result of the present study suggests the possib ility of magnetic control of gas streams containing O-2 gas. The neces sary conditions are the gradient of the O-2-gas concentration, the low -velocity without fields, v(o), and high quantity of H (dH/dy).