American Journal of Environmental Sciences

SIMULATION OF THE PROCESS OF FLOW SEPARATION AT THE ENTRANCE OF SQUARE ASPIRATING PORT

Olga A. Averkova, Ilya V. Kryukov, Kirill V. Plotnikov, Elena I. Tolmacheva and Ilya V. Khodakov

DOI : 10.3844/ajessp.2014.509.515

American Journal of Environmental Sciences

Volume 10, Issue 5

Pages 509-515

Abstract

We consider the flow at the inlet to the suction square hole with sharp edges, which is located in an infinite space. The purpose of this study is to construct a mathematical model of flow separation at the entrance to square suction canal with sharp edges, located in infinite space, by using square vortex frameworks. As a part of ideology of the method of discrete vortices in the non-stationary quasi-axisymmetric formulation, we constructed the mathematical model of separated flow at the inlet to the square aspirating pipe and its software-algorithmic implementation. We have determined the velocity field at the entrance to suction channel and a line of flow separation. Determine the velocity field in typical cross-sections of the suction channel, dimensions of the efficient absorption, compression ratio of the jet. Were received analytical formulas for calculating separation surfaces current. Profiling the entrance opening of the suction hole detected on the outlines separation surface will improve the acoustic and aerodynamic properties of the exhaust systems. The obtained results can be useful for designing of local exhaust ventilation of reduced energy consumption.

Copyright

© 2014 Olga A. Averkova, Ilya V. Kryukov, Kirill V. Plotnikov, Elena I. Tolmacheva and Ilya V. Khodakov. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.