Results 31 to 40 of about 8,893 (314)
On the modelling of isothermal gas flows at the microscale [PDF]
, 2008 This paper makes two new propositions regarding the modelling of rarefied (non-equilibrium) isothermal gas flows at the microscale. The first is a new test case for benchmarking high-order, or extended, hydrodynamic models for these flows.
Reese, Jason M., Lockerby, Duncan A.
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Data-driven nonlinear constitutive relations for rarefied flow computations
Advances in Aerodynamics, 2021 To overcome the defects of traditional rarefied numerical methods such as the Direct Simulation Monte Carlo (DSMC) method and unified Boltzmann equation schemes and extend the covering range of macroscopic equations in high Knudsen number flows, data ...
Wenwen Zhao +3 more
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Авіаційно-космічна техніка та технологія, 2022 This article presents the structure of designing and modeling the flow of rotors and pusher propellers in a highly rarefied atmosphere. The aerodynamic characteristics of an airfoil are key factors in determining design accuracy and performance ...
Mykola Kulyk +4 more
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Entropy, 2017 The numerical study of continuum-rarefied gas flows is of considerable interest because it can provide fundamental knowledge regarding flow physics. Recently, the nonlinear coupled constitutive method (NCCM) has been derived from the Boltzmann equation ...
Ke Tang, Hong Xiao
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Aerodynamic optimization of NACA 0012 airfoils with attached Gurney flap in the rarefied gas flow
AIP Advances, 2023 The aerodynamic optimization of a Gurney flap attached to the NACA 0012 airfoil in rarefied gas flow is studied in this study. In order to investigate the effects of Gurney flap geometry (height, mounting angle, and mounting location) and angle of attack
Keren Lin +4 more
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Gas dynamics at the micro-scale : a review of progress in hydrodynamic modelling [PDF]
, 2009 We review some recent developments in the modelling of non-equilibrium (rarefied) gas flows at the micro- and nano-scale using extended hydrodynamic models.
Reese, Jason M. +4 more
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Thermal rarefied gas flow investigations through micro/nano backward-facing step : Comparison of DSMC and CFD subject to hybrid slip and jump boundary conditions [PDF]
, 2014 This paper evaluates the suitability of a newly developed hybrid “Langmuir-Maxwell” and “Langmuir-Smoluchowski” slip/jump boundary conditions in the Navier-Stokes-Fourier equations for nano/micro backward-facing step geometry flow which experiences ...
White, Craig +4 more
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Optical Diagnostics in Rarefied Flows
Chinese Journal of Aeronautics, 2000 AbstractThis article reviews the instrumental developments accomplished at ONERA in order to perform precise non-intrusive measurements of hypersonic flows using laser- and electron-beam-based optical techniques. Point line of sight and imaging measurements are possible.
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Rarefied gas flow through a slit.
SHINKU, 1990 A rarefied gas flow through a slit in an infinite plane wall, induced by a small pressure difference across the slit, is studied on the basis of the kinetic theory. The system of integral equations for the macroscopic variables (the velocity, density, and temperature of the gas), derived from the linearized Boltzmann–Krook–Welander equation with the ...
HASEGAWA, Manabu, SONE, Yoshio
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Flow Generated by Suddenly Heated Flat Plate [PDF]
, 1963 By employing the two-sided Maxwellian in Maxwell's moment method a kinetic theory description is obtained of the flow generated by a step-function increase in the temperature of an infinite flat plate.
Wu, Ying-Chu Lin Susan
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