Abstract
Control of the velocity distribution is a fundamental and an important problem in many engineering problems. In this paper results of theoretical investigation of axisymmetrical flow through a gauze or a screen and a gauze shape of producing shear flow at far downstream are presented. The analytical method in this paper is based upon the linearized theory in which a method of asymptotic expansion is used. The empirical values of gauze resistance which are related with the velocity distributions for upstream and downstream of the gauze, the gauze shape, and the gauze coefficient are used to analyze the steady, inviscid, and rotational fluid flow. The shape of gauze and the velocity distributions are calculated by means of using the FOURIER-BESSEL expansion. It is seen that the using of fifteen zeros of Bessel functions is enough to carry out the numerical calculation with high accuracy for these examples.
