Self-sustained oscillations of lift and drag forces, heat fluxes, and flowfield parameters over supersonic bodies under asymmetrical energy deposition

IF 1.7 4区工程技术 Q3 MECHANICS

Shock Waves Pub Date : 2022-12-22 DOI:10.1007/s00193-022-01114-1

O. A. Azarova, D. D. Knight, O. V. Kravchenko

引用次数: 1

Abstract

This paper examines the effect of an asymmetrical energy source impact on the flow around supersonic aerodynamic bodies in a viscous heat-conducting gas (air) at Mach 2.5. The simulations are based on the Navier–Stokes equations with temperature-dependent viscosity and thermal conductivity. The dynamics of density, pressure, temperature, and heat fluxes were analyzed. Specific emphasis is placed on the effects of viscosity and thermal conductivity. Self-sustained oscillations of the flow parameters, lift and drag forces, and heat fluxes were obtained and studied. The mechanism of these oscillations was established, and the conditions of their presence in a flow in relation to the energy source characteristics and location were researched. Possible approaches for elimination of these oscillations were discussed.

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在不对称能量沉积下超音速物体上升力和阻力、热通量和流场参数的自持续振荡

本文研究了非对称能量源冲击对粘性导热气体(空气)中以2.5马赫速度绕超音速气动体流动的影响。模拟基于具有温度依赖性粘度和导热系数的Navier-Stokes方程。分析了密度、压力、温度和热流的动态变化。特别强调的是粘度和导热性的影响。得到并研究了流动参数、升力和阻力以及热通量的自持续振荡。建立了这些振荡的机理，并研究了它们在流动中存在的条件与能量源特性和位置的关系。讨论了消除这些振荡的可能方法。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Shock Waves 物理-力学

CiteScore

4.10

自引率

9.10%

发文量

审稿时长

17.4 months

期刊介绍： Shock Waves provides a forum for presenting and discussing new results in all fields where shock and detonation phenomena play a role. The journal addresses physicists, engineers and applied mathematicians working on theoretical, experimental or numerical issues, including diagnostics and flow visualization. The research fields considered include, but are not limited to, aero- and gas dynamics, acoustics, physical chemistry, condensed matter and plasmas, with applications encompassing materials sciences, space sciences, geosciences, life sciences and medicine. Of particular interest are contributions which provide insights into fundamental aspects of the techniques that are relevant to more than one specific research community. The journal publishes scholarly research papers, invited review articles and short notes, as well as comments on papers already published in this journal. Occasionally concise meeting reports of interest to the Shock Waves community are published.