... channel flow flow control flow instability hypersonic flow Navier-Stokes equations Poisson equation state feedback Streamwise equilibrium velocity U e ( y ) (left) and U y e ( y ) (right) for different values of H . Solid, H = 0 ; dash-dotted...

.... 25 07 2003 15 09 2004 electrohydraulic control equipment valves damping flow instability computational fluid dynamics viscosity design engineering mechanical engineering computing Electrohydraulic Valves Unstable Valve Damping Length Steady Flow Force Viscosity Non...

... advantages that an unstable valve may offer. These studies indicate that unstable valves provide faster response than the stable counterparts when stroking forces are limited. Moreover, unstable valves tend to require less positive power and energy to operate. Flow Instability Solenoid Actuator...