THE INFLUENCE OF THE SHAPE OF THE ARTIFICIAL ROUGH-NESS ON THE FLOW IN THE DIFFUSER CHANNEL
Journal Title: Проблеми тертя та зношування - Year 2017, Vol 77, Issue
Abstract
The influence of the shape of the artificial roughness elements on the flow in the diffuser channel was analyzed in the article. Calculations were carried out for Mach numbers in the range 0.2 ... 0.5. Elements of artificial roughness had the form of a pyramid and a hemisphere. The height of the elements of artificial roughness gradually changed from 0.2 to 0.5 mm. Ele-ments of artificial roughness generate turbulent flow disturbances, which contribute to the in-tensification of energy exchange processes in the wall layers of gas. The shape of the elements of artificial roughness affects the effectiveness of their application. The use of the elements of artificial roughness in the form of a hemisphere is most effective for reducing the total pressure loss.
Authors and Affiliations
K. V. DOROSHENKO, YU. YU. TERESHCHENKO, P. V. GUMENYUK, P. HAMZEG
Keywords
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- EP ID EP366426
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