Influence of an entropy layer on the formation of Goertler vortices in a hypersonic flow

熵层对高超声速流中戈特勒涡形成的影响

基本信息

批准号：
239427652
负责人：
Professor Dr.-Ing. Herbert Olivier
金额：
--
依托单位：
Russian Foundation for Basic Research
依托单位国家：
德国
项目类别：
Research Grants
财政年份：
2013
资助国家：
德国
起止时间：
2012-12-31 至 2016-12-31
项目状态：
已结题

来源：
https://gepris.dfg.de/gepris/projekt/239427652?language=en
关键词：
Influence entropy layer formation Goertler

项目摘要

Low thermal loads in the stagnation region of e.g. winged reentry or hypersonic vehicles require blunted leading edges at wings or rudders. The convective heat flux in the stagnation region transferred from the flow to the body reduces with increasing leading edge radius. But blunt leading edges also generate entropy layers which interact with the boundary layer. Certain changes of the body surface shape lead to boundary layer separation like e.g. at deflected control surfaces. In the reattachment region so-called Goertler vortices establish with a vortex axis being oriented in downstream direction. In lateral direction this leads to a periodic flow pattern with local heating peaks at the stagnation region of two neighbouring vortices. The aim of the present project is to study the yet unknown influence of an entropy layer on the formation of Goertler vortices. The main parameter of the entropy layer and the free shear layer influencing the formation of the Görtler vortices should be identified. Based on experimental and numerical results, the quantitative dependence of the wavelength and peak heating of the Goertler vortices on these parameters will be described.

例如，带翼再入飞行器或高超音速飞行器的停滞区域中的低热负荷需要机翼或方向舵处的钝化前缘，随着前缘半径的增加，停滞区域中从流传递到主体的对流热通量也会减少。产生与边界层相互作用的熵层。身体表面形状的某些变化导致边界层分离，例如在偏转的控制表面处。涡流在横向方向上形成涡流轴，这导致在两个相邻涡流的停滞区域处出现局部加热峰值的周期性流动模式。本项目的目的是研究未知的影响。熵层对戈特勒涡形成的影响应基于实验和确定影响戈特勒涡形成的主要参数。根据数值结果，将描述戈特勒涡旋的波长和峰值加热对这些参数的定量依赖性。

项目成果

期刊论文数量（3）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

Effect of Small Bluntness on Formation of Görtler Vortices in a Supersonic Compression Corner Flow

小钝度对超音速压缩角流中戈特勒涡形成的影响

DOI：
10.1134/s0021894417060037
发表时间：
2017
期刊：
Journal of Applied Mechanics and Technical Physics
影响因子：
0.6
作者：
Chuvakhov; P. V.;Borovoy; V. Ya.;Egorov; I. V.;Radchenko; V. N.;Olivier; H.;Roghelia; A.
通讯作者：
A.

Joint influence of high entropy layer and goertler vortices on heat transfer in supersonic compression ramp flow

高熵层和戈特勒涡对超音速压缩斜坡流传热的联合影响