@Article{CiCP-22-3,
author = {},
title = {Comprehensive Studies on Rarefied Jet and Jet Impingement Flows with Gas-Kinetic Methods},
journal = {Communications in Computational Physics},
year = {2017},
volume = {22},
number = {3},
pages = {712--741},
abstract = {<p style="text-align: justify;">This paper presents comprehensive studies on two closely related problems
of high speed collisionless gaseous jet from a circular exit and impinging on an inclined
rectangular flat plate, where the plate surface can be diffuse or specular reflective.
Gas-kinetic theories are adopted to study the problems, and several crucial
geometry-location and velocity-direction relations are used. The final complete results
include flow-field properties such as density, velocity components, temperature and
pressure, and impingement surface properties such as coefficients of pressure, shear
stress and heat flux. Also included are the averaged coefficients for pressure, friction,
heat flux, moment over the whole plate, and the averaged distance from the moment
center to the plate center. The final results include complex but accurate integrations
involving the geometry and specific speed ratios, inclination angle, and the temperature
ratio. Several numerical simulations with the direct simulation Monte Carlo
method validate these analytical results, and the results are essentially identical. Exponential,
trigonometric, and error functions are embedded in the solutions. The results
illustrate that the past simple cosine function approach is rather crude, and should be
used cautiously. The gas-kinetic method and processes are heuristic and can be used
to investigate other external high Knudsen number impingement flow problems, including
the flow-field and surface properties for high Knudsen number jet from an exit
and flat plate of arbitrary shapes. The results are expected to find many engineering
applications.</p>},
issn = {1991-7120},
doi = {https://doi.org/10.4208/cicp.OA-2016-0165},
url = {https://global-sci.com/article/80157/comprehensive-studies-on-rarefied-jet-and-jet-impingement-flows-with-gas-kinetic-methods}
}