Аннотация:

Results of settlement pilot study of gasdynamic characteristics of a subsonic current through the design consisting of a cylindrical pipe, turn on a corner of 90 degrees, the diffuser, a gas-permeable porous insert and a confusor for two values of number of Reynolds - $5\times10^{4}$ and $10^{5}$ are given. It is settlement and experimentally shown that use of a porous insert gives as a result almost uniform profile of speed of gas at the design exit. Heterogeneity of size of speed in output section makes 3 percent while in lack of a porous insert heterogeneity makes 15 percent.