Numerical Determination of the Aerodynamic Characteristics of the Re-Entry Vehicle and the Front Heat Shield during Its Separation Taking into Account Mutual Interference Influence

V. T. Kalugin; D. M. Slobodyanyuk

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Numerical Determination of the Aerodynamic Characteristics of the Re-Entry Vehicle and the Front Heat Shield during Its Separation Taking into Account Mutual Interference Influence

机译：重新进入车辆的空气动力学特性和前热屏蔽在其分离过程中的数值确定，考虑相互干扰影响

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摘要

The aerodynamic characteristics of the detachable structural element, namely, the frontal heat shield, as well as the re-entry vehicle are considered. Numerical calculations of the flow were carried out in the FlowVision software package. The flow structures were determined, the calculations results of the flow parameters were compared.

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来源
《Russian Aeronautics》 |2020年第3期|共9页
作者
V. T. Kalugin; D. M. Slobodyanyuk;
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作者单位

Bauman Moscow State Technical University;

Bauman Moscow State Technical University;

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原文格式 PDF
正文语种 eng
中图分类航空;
关键词
aerodynamic characteristics; dynamic mesh; re-entry vehicle; heat shield; aerodynamic interference;

机译：空气动力学特性;动态网格;再入车辆;隔热罩;空气动力学干扰;

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1. Secure tightening of a CMC fastener for the heat shield of re-entry vehicles [J] . H. Boehrk, U. Beyermann Composite Structures . 2009,第1期

机译：安全紧固用于再入车辆隔热板的CMC紧固件
2. Aerodynamic Stability of Reentry Heat Shield Shapes for a Crew Exploration Vehicle [J] . Joshua E. Johnson, Ryan P. Starkey, Mark J. Lewis Journal of Spacecraft and Rockets . 2006,第4期

机译：乘员探员飞行器折返式隔热板形状的空气动力学稳定性
3. A Study on Improving Dynamic Characteristics of a Front Lower Suspension Arm and Aerodynamic Effects of a Hand-Made Hybrid Vehicle [J] . Guebum Han, Kang-Min Lee, Seong Keol Kim International Journal of Precision Engineering and Manufacturing . 2014,第9期

机译：改进前下悬架动态特性和手动混合动力汽车的空气动力效应的研究
4. Performance of Transpiration Cooled Heat Shields for Re-entry Vehicles [C] . Tobias Hermann, Imran Naved, Matthew McGilvray AIAA SciTech forum and exposition . 2019

机译：再入车辆的蒸发冷却隔热罩的性能
5. This article presents a new numerical model describing the behaviour of a thermally thick wood sample exposed to high solar heat flux (above 1 MW/m2). A preliminary study based on dimensionless numbers is used to classify the problem and support model building assumptions. Then, a model based on mass, momentum and energy balance equations is proposed. These equations are coupled with liquid-vapour drying model and pseudo species biomass degradation model. By comparing to a former experimental study, preliminary results have shown that these equations are not enough to accurately predict biomass behaviour under high solar heat flux. Indeed, a char layer acting as radiative shield forms on the sample exposed surface. In addition to this classical set of equations, it is mandatory to take into account radiation penetration into the medium. Furthermore, as biomass contains water, medium deformation consecutively to char steam gasification must also be implemented. Finally, with the addition of these two strategies, the model is able to properly capture the degradation of biomass when exposed to high radiative heat flux over a range of sample initial moisture content. Additional insights of biomass behaviour under high solar heat flux were also derived. Drying, pyrolysis and gasification fronts are present at the same time inside of the sample. The coexistence of these three thermochemical fronts leads to char gasification by the steam produced from drying of the sample, which it is the main phenomenon behind medium ablation. [O] . Pozzobon, Victor, Salvador, Sylvain, Bézian, Jean Jacques 2018

机译：本文提供了一个新的数值模型，该模型描述了暴露于高太阳热通量（高于1 / MW / m2）的热厚木材样品的行为。基于无量纲数的初步研究用于对问题进行分类并支持模型构建假设。然后，提出了一种基于质量，动量和能量平衡方程的模型。这些方程式与液体蒸汽干燥模型和假物种生物质降解模型耦合。通过与以前的实验研究进行比较，初步结果表明，这些方程不足以准确预测高太阳热通量下的生物量行为。的确，在样品暴露的表面上形成了充当辐射屏蔽层的炭层。除了这套经典的方程式之外，还必须考虑到辐射向介质的渗透。此外，由于生物质中含有水，因此还必须在炭蒸气汽化后进行连续的介质变形。最后，通过添加这两种策略，该模型能够在一定范围的样品初始水分含量下暴露于高辐射热通量的情况下，正确捕获生物质的降解。还得出了在高太阳热通量下生物量行为的其他见解。样品内部同时存在干燥，热解和气化前沿。这三个热化学前沿的共存会导致样品干燥产生的蒸汽产生焦炭气化，这是介质烧蚀的主要现象。
6. Heat Transfer Measurements at Mach 8 on an Aerodynamically Controllable Winged Re-Entry Configuration. Part of an Investigation of Hypersonic Flow Separation and Control Characteristics [R] . Meckler, L. 1964

机译：在空气动力学可控的翼式再入口配置下以8马赫进行传热测量。高超声速流动分离与控制特性研究的一部分

Numerical Determination of the Aerodynamic Characteristics of the Re-Entry Vehicle and the Front Heat Shield during Its Separation Taking into Account Mutual Interference Influence

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