Simulation of velocity profiles by shaped gauze screens.
J. L. Livesey, E.M. Laws · AIAA Journal · 1973
In this paper results of a theoretical and experimental investigation of axisymmetric flow through shaped wire gauze screens are presented. The theoretical analysis for steady, inviscid, rotational flow in which the highly viscous nature of the flow processes at the screen is introduced into the theory by empirical values of gauze resistance and deflection coefficient, produces linearized equations which relate the velocity distributions far upstream and downstream of the screen, the screen shape and the gauze coefficients. Given the screen shape, the gauze coefficients and the upstream velocity distribution, the downstream velocity distribution can be determined or alternatively given the upstream and downstream velocity distribution a screen shape can be specified for certain values of the resistance and deflection coefficients. The previously accepted term in the linearized formulation which accounts for the resistance variation due to screen angle is shown to produce erroneous results. A comparison between experimental and theoretical profiles is presented omitting this term for four different screen shapes and reasonable agreement is obtained.