Simulation of convective heat flux and heat penetration for a spacecraft at re-entry

Ernst Arne Meese; Helge Norstrud

首页> 外文期刊>Aerospace science and technology >Simulation of convective heat flux and heat penetration for a spacecraft at re-entry

【24h】

Simulation of convective heat flux and heat penetration for a spacecraft at re-entry

机译：航天器再入时对流热通量和热渗透的模拟

获取原文

获取原文并翻译 | 示例

掌桥外文数据库（机构版） >>

开具论文收录证明 >>

文献代查 >>

页面导航

摘要
著录项
相似文献
相关主题

摘要

A closed-form simulation model is presented for the convective heat transfer to a space vehicle a re-entry. The analysis is based on given trajectory data, i.e. on vehicle velocity vs. Flight altitude. Hence, the uniqueness of the subject engineering method is that it does not solve the equations of motion, but assumes an analytical expression for the flight trajectory together with an isothermal atmosphere. The obtained results for global and local (e.g. the stagnation point) heat transfers to the vehicle are further used for the prediction of he one- dimensional heat penetration into the vehicle structure. This also includes the accumulated (or integrated) heat load as function of the time of descent. Comparisons of results from the present method with published data for the Space Shuttle and for the European Atmospheric Reentry Demonstrator are presented, both for peak heat loads at stagnation point and integrated reference heat load.

机译：提出了一种封闭形式的仿真模型，用于将对流热传递到航天器再进入。该分析基于给定的轨迹数据，即基于车速与飞行高度的关系。因此，本工程学方法的独特之处在于它不求解运动方程，而是假设飞行轨迹与等温大气一起为解析表达式。对于向车辆的整体和局部（例如停滞点）热传递所获得的结果还用于预测向车辆结构的一维热渗透。这还包括作为下降时间函数的累积（或综合）热负荷。给出了本方法的结果与航天飞机和欧洲大气折返演示器的已发布数据的比较，包括停滞点的峰值热负荷和综合参考热负荷。

著录项

来源
《Aerospace science and technology》 |2002年第3期|p.185-194|共10页
作者
Ernst Arne Meese; Helge Norstrud;
展开▼
作者单位

展开▼
收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种 eng
中图分类航空、航天;
关键词
Re-entry; Simple model; Analytic expressions; Integrated heat load;

机译：重新进入;模型简单;解析表达式;综合热负荷;

相似文献

外文文献
中文文献
专利

1. Large eddy simulations of high-heat-flux supercritical CO_2 convection in microchannels: Mixed convection and non-uniform heating [J] . International Journal of Heat and Mass Transfer . 2019,第DECa期

机译：大通道中高热通量超临界CO_2对流的大涡模拟：混合对流和非均匀加热
2. Effect of numerics and laminar-turbulent transition on heat flux distribution simulation over a typical re-entry module [J] . Siddharth Govindan, Praveen Nair Applied thermal engineering: Design, processes, equipment, economics . 2018,第期

机译：数字和层流湍流过渡对典型重新入口模块的热通量分布模拟的影响
3. Numerical Simulation of Re-Entry Flow: Heat Flux Evaluation [J] . FULVIO STELLA, MARILENA GIANGI, FABIO PAGLIA, Heat Transfer Engineering . 2006,第2期

机译：回流的数值模拟：热通量评估
4. Numerical simulation of turbulent natural convection in a vertical channel asymmetrically heated with constant heat flux [C] . R.Bennacer, T.Hammami, A.A.Mohamad International conference on advanced computational methods in heat transfer . 2000

机译：恒定热流不对称加热的垂直通道内湍流自然对流的数值模拟
5. Local convection heat transfer coefficient for a two-dimensional wall jet with uniform heat flux boundary condition using infrared imaging. [D] . AbdulNour, Ramez S. 1999

机译：二维壁面射流在均匀热通量边界条件下的局部对流传热系数的红外成像。
6. Numerical Simulation of Mixed Convection Squeezing Flow of a Hybrid Nanofluid Containing Magnetized Ferroparticles in 50:50 of Ethylene Glycol–Water Mixture Base Fluids Between Two Disks With the Presence of a Non-linear Thermal Radiation Heat Flux [O] . Kottakkaran Sooppy Nisar, Umair Khan, A. Zaib, 2020

机译：在50％：50％：50％：50％：50％的掺量磁化铁氧化物中挤出流动的混合对流挤压流动的数值模拟：50％的乙二醇 - 水混合物在两个盘之间的碱流体存在非线性热辐射热通量的存在
7. 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。
8. Thermal-Hydraulic Simulation of Natural Convection Decay Heat Removal in the High Flux Isotope Reactor Using RELAP5 and TEMPEST: Part 1. Models and Simulation Results [R] . Morris, D. G. , Wendel, M. W. , Chen, N. C. J. , 1989

机译：利用RELap5和TEmpEsT对高通量同位素反应器中自然对流衰变热去除的热工水力模拟：第1部分：模型和模拟结果

Simulation of convective heat flux and heat penetration for a spacecraft at re-entry

摘要

著录项

相似文献

相关主题

期刊订阅