Results 21 to 30 of about 3,077,819 (277)
Rarefied flow separation in microchannel with bends [PDF]
, 2020 Based on an accurate numerical solution of the kinetic equation using well-resolved spatial and velocity grids, the separation of rarefied gas flow in a microchannel with double rectangular bends is investigated over a wide range of Knudsen and Reynolds ...
Li, Jun +6 more
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Numerical simulation of a rarefied gas jet emanating from an ion-optical system of the microthruster [PDF]
Омский научный вестник: Серия "Авиационно-ракетное и энергетическое машиностроение"A jet of ionized rarefied gas escaping from an ion-optical system of a prototype resonator RF-ion thruster into the surrounding space with low background pressure is considered.
K. I. Zharikov, I. S. Vavilov
doaj +1 more source
Aerospace, 2023 The cold gas micro-propulsion system can provide low noise and ultra-high accuracy thrust for satellite platforms for space gravitational wave detection, high-precision earth gravity field measurement.
Xudong Wang +4 more
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A Proposal for Long-Term Missions of Small Lunar Rovers Using an MLI Curtain System
International Journal of Aerospace Engineering, 2019 This paper proposes a lunar night survival method for small rovers using an MLI (Multilayer Insulation) curtain system for long-term missions. Until recently, it was difficult to install RHU (Radioisotope Heating Units) or other temperature maintenance ...
Jang-Joon Lee, Kyu-Hong Kim
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Aerospace, 2017 Recent work on studying rarefied background and jet flow interactions is reported. A new gaskinetic method is developed to investigate two closely related problems. The first problem is how a collisionless background flow can affect a highly rarefied jet
Chunpei Cai
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Rarefied, superorbital flows in an expansion tube [PDF]
International Journal of Numerical Methods for Heat & Fluid Flow, 2004 A free-piston driven expansion tube [X1 at the Centre for Hypersonics, University of Queensland] and its instrumentation is described. The facility was used to generate rarefied flows at speeds of approximately 10 km/s. Although the flow in the tube itself was in the continuum regime, rarefied flow conditions were achieved by allowing the flow at the ...
Wheatley, V. +5 more
openaire +3 more sources
Gas flow through a micro-orifice due to small pressure difference [PDF]
, 2011 This paper was presented at the 3rd Micro and Nano Flows Conference (MNF2011), which was held at the Makedonia Palace Hotel, Thessaloniki in Greece.
Valougeorgis, D +2 more
core +6 more sources
Rarefied Poiseuille Flow in a Circular Tube [PDF]
EPJ Web of Conferences, 2019 An isothermal rarefied gas flow through a long circular tube due to longitudinal pressure gradient (a three-dimensional Poiseuille problem) was studied using the linearized Bhatnagar-Gross-Krook model kinetic equation over the whole range of the Knudsen ...
Germider Oksana, Popov Vasily
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A topology optimization method for rarefied gas flows
Nihon Kikai Gakkai ronbunshu, 2017 We construct a topology optimization method for two dimensional rarefied gas flow problems, based on level-set boundary expressions. The degree of rarefaction is expressed by the Knudsen number, which is the ratio of the mean free path and the ...
Ayami SATO +4 more
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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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