EVALUATION OF A HEMISPHERICAL HEAD FLOW DIRECTION SENSOR FOR INLET DUCT MEASUREMENTS

摘要

A hemispherical head flow direction sensor was tested in a wind tunnel to evaluate its effectiveness for measuring dynamic duct flow direction angles of +27°. The tests were conducted at Reynolds numbers of 3.28 X 106 per meter (1.0 X 106 per foot) and 4.92 X 106 per meter (1.5 X 106 per foot) and at Mach numbers from 0.30 to 0.70.nThe design criteria for the probe are discussed and the wind tunnel results are presented. Three techniques for deriving flow angles are described.