ISSN Online: 2379-1748
ISBN Flash Drive: 978-1-56700-472-4
ISBN Online: 978-1-56700-471-7
3rd Thermal and Fluids Engineering Conference (TFEC)
ANALYTICAL STUDY OF STAGNATION PROPERTIES OF RAREFIED JET FLOW OF ANNULAR EXIT IMPINGE ON A DIFFUSED FLAT PLATE WITH DIFFERENT KNUDSEN NUMBERS
Abstract
A non-continuum gaseous flow out of an annular exit impinging on a vertical diffused flat plate was
investigated. This study focused on the properties of stagnation point of the plate surface. A
constraint relation about the velocity components of gas particles leaving a nozzle exit point and
arriving at a given spatial point outside the nozzle was employed. This relation leads to several
analytical expressions for collisionless flow property distributions on the plate surface. Effects of
Knudsen number, speed ratio, and vertical distance between nozzle exit and plate center in the
stagnation properties were studied. Numerical simulation results obtained with the direct simulation
Monte Carlo method validate the analytical collisionless flow.