Results 1 to 10 of about 15,542 (295)

Modeling supersonic rarefied jets on experimental cluster at Novosibirsk State University [PDF]

open access: yesE3S Web of Conferences, 2023
A review of the experimental work carried out on the vacuum gas-dynamic stands of the Applied Physics Department of the Novosibirsk State University is presented.
Zarvin Alexandr   +5 more
doaj   +1 more source

A Discrete-Ordinates Solution for the Strong Evaporation Problem in Rarefied Gas Dynamics

open access: yesTrends in Computational and Applied Mathematics, 2021
In this work we solve the nonlinear strong evaporation problem in rarefied gas dynamics. The analysis is based on the BGK model, with three dimensional velocity vector, derived from the Boltzmann equation. We present the complete development of a closed
C. S. Scherer
doaj   +1 more source

Molecular dynamics simulation on the splitting of shear flow in nanochannels

open access: yesAIP Advances, 2021
With the vigorous development of micro-/nanoscience and micro-/nanotechnology, fluid flows at the micro-/nanoscale have become an important research field. The molecular dynamics simulations of Couette flow in a nanochannel are carried out in this paper.
Hang Yu, Zhengyu Tian, Fan Yang, Hua Li
doaj   +1 more source

Features of calculation and modeling of flow of rotors and pucher propellers for aerial vehicle in the condition of very rarefied atmosphere

open access: yesАвіаційно-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
doaj   +1 more source

Molecular dynamics study on scattering characteristics of nitrogen molecules from platinum surface by molecular beam method

open access: yesAIP Advances, 2020
Rarefied gas flow has received wide attention due to the booming of micro/nano-electromechanical systems and aerospace engineering. Under such rarefied conditions, the frequency of intermolecular collisions is sharply reduced, so the impacts of ...
Hang Yu, Ye Zhang, Fan Yang, Hua Li
doaj   +1 more source

Numerical simulation of a rarefied gas jet emanating from an ion-optical system of the microthruster [PDF]

open access: yesОмский 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

Molecular free path distribution in rarefied gases [PDF]

open access: yes, 2011
We present the results of investigations into the distribution of molecular free paths in rarefied gases using molecular dynamics simulations. Our tests on a range of different gas densities and confinements (unbounded, single bounding wall and parallel ...
Dongari, Nishanth   +2 more
core   +1 more source

Rarefied gas dynamics and its applications to vacuum technology [PDF]

open access: yes, 2007
Basic concepts of rarefied gas dynamics are given in a concise form. Some problems of rarefied gas flows are considered, namely, calculations of velocity slip and temperature jump coefficients, gas flow through a tube due to pressure and temperature ...
Sharipov, F
core   +1 more source

On deterministic approximation of the Boltzmann equation in a bounded domain [PDF]

open access: yes, 2011
In this paper we present a fully deterministic method for the numerical solution to the Boltzmann equation of rarefied gas dynamics in a bounded domain for multi-scale problems.
Filbet, Francis
core   +5 more sources

High-intensity beam profile measurement using a gas sheet monitor by beam induced fluorescence detection

open access: yesPhysical Review Accelerators and Beams, 2021
A transverse beam profile monitor that visualizes a two-dimensional beam-induced fluorescent image was developed. The monitor employs a sheet-shaped gas flow formed by a technique of rarefied gas dynamics.
Ippei Yamada   +5 more
doaj   +1 more source

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