未充分膨胀超音速喷气机马赫盘后反向流的数值研究

IF 0.5 4区工程技术 Q4 ENGINEERING, AEROSPACE

Thermophysics and Aeromechanics Pub Date : 2024-07-29 DOI:10.1134/S0869864324010074

A. V. Kashkovsky, A. N. Kudryavtsev, A. A. Shershnev

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引用次数: 0

摘要

报告对从圆形喷嘴排出的未充分膨胀超音速射流进行了数值模拟。研究采用两种不同的方法进行三维计算：纳维-斯托克斯方程和直接模拟蒙特卡罗方法。在这两种情况下，在第一个冲击单元的马赫盘后面都形成了反向流动区。因此，以前在轴对称模拟中观察到的这一现象不能归咎于对称轴附近这些方程的近似值不准确。

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Numerical study of the reverse flow behind the Mach disk in an underexpanded supersonic jet

Numerical simulations of an underexpanded supersonic jet exhausting from a circular nozzle are reported. The study is performed in a three-dimensional formulation using two different approaches: Navier–Stokes equations and Direct Simulation Monte Carlo method. In both cases, a reverse flow zone is formed behind the Mach disk in the first shock cell. Thus, this phenomenon, which was previously observed in axisymmetric simulations, cannot be attributed to inaccuracies of approximation of these equations near the axis of symmetry.

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来源期刊

Thermophysics and Aeromechanics THERMODYNAMICS-MECHANICS

CiteScore

0.90

自引率

40.00%

发文量

审稿时长

>12 weeks

期刊介绍： The journal Thermophysics and Aeromechanics publishes original reports, reviews, and discussions on the following topics: hydrogasdynamics, heat and mass transfer, turbulence, means and methods of aero- and thermophysical experiment, physics of low-temperature plasma, and physical and technical problems of energetics. These topics are the prior fields of investigation at the Institute of Thermophysics and the Institute of Theoretical and Applied Mechanics of the Siberian Branch of the Russian Academy of Sciences (SB RAS), which are the founders of the journal along with SB RAS. This publication promotes an exchange of information between the researchers of Russia and the international scientific community.