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ISSN Online: 2377-424X

ISBN CD: 1-56700-226-9

ISBN Online: 1-56700-225-0

International Heat Transfer Conference 13
August, 13-18, 2006, Sydney, Australia

THE PHYSICAL EFFECTS ARISING AT INTERACTION OF A HIGH-SPEED DUSTY FLOW WITH A BLUNTED BODY MPH-34

Get access (open in a dialog) DOI: 10.1615/IHTC13.p12.340
10 pages

Abstract

In the given work results of calculations and the experiences executed in a wide range of parameters of gas flow and particles are resulted. Physical effects arising at interaction of a high-speed dusty flow with the blunted body are demonstrated.
Experimental researches were carried out in a flow of air, nitrogen, carbon dioxide in shock wind tunnel and in the liquid rocket engine jet.
The Mach number of the carrier free-stream gas flow is varied from 2.4 to 6, and the Reynolds number calculated on the diameter of the body immersed in a flow from 104 to 106. The mass concentration of solid particles in the flow does not exceed 3%. When the particle diameter varies from 0.15 to 160 μm, the particle velocity at collisions with the body surface varies from 0 to 1350 m/s.
For investigation of dusty gas flow, it was used both a shadow method and a method based on registration of scattered light. The visualization was carried out by means of the two-color laser knife. The pulse Nd laser with a lamp pumping was used. Wave lengths of the laser generation are: 1.064 μm and 0.532 μm (green light).
The heat flux was measured by the thin wall technique or calorimeters. At the thin wall method the stainless steel foil 0.2 mm in thickness was welded to the model surface.