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A Coupled Computer Code for the Transient Thermal Response and Ablation of Non-Charring Heat Shields and Nose Tips

机译：用于瞬态热响应和消除非炭化热屏蔽和鼻尖的耦合计算机代码

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作者
Anderson, L. W.; Dahm, T. J.; Moyer, C. B.;
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年度 1970
页码 p.1-108
总页数 108
原文格式 PDF
正文语种 eng
中图分类
关键词
Ablation ; Coding ; Heat shielding ; Nose cones ; Thermodynamic properties ; Finite difference theory ; Newton pressure law ; Prandtl-meyer expansion ; Thermochemistry;

机译：消融;编码;热屏蔽;鼻锥;热力学性质;有限差分理论;牛顿压力定律; prandtl-meyer展开;热化学;

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机译：火星科学实验室隔热板的二维消融和热响应分析
2. Thermal response of tritiated codeposits from JET and TFTR to transient heat pulses [J] . Skinner CH., Bekris N., Coad JP., Physica Scripta: An International Journal for Experimental and Theoretical Physics . 2003 ,第0期

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3. Enhancement of Novolac aerogel nanostructure and cellulose cork on thermal performance and ablation properties of lightweight heat shields: with regard to omission of thermal convection [J] . Abdeali Golnoosh, Samani Faranak, Hadizadeh-Raiesi Hamidreza, Experimental Heat Transfer . 2020 ,第5a7期

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4. NUMERICAL ANALYSIS OF THERMAL CONDUCTIVITY OF NON-CHARRING MATERIAL ABLATION CARBON-CARBON AND GRAPHITE WITH CONSIDERING CHEMICAL REACTION EFFECTS, MASS TRANSFER AND SURFACE HEAT TRANSFER [C] . Ali Kianifar, Hamid Mohammadiun ASME Joint US-European Fluids Engineering Division summer meeting;FEDSM2010 . 2011

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5. Ablation onset in unsteady hypersonic flow about nose-tips with a forward facing cavity. [D] . Silton, Sidra Idelle. 2001

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6. Characterization of Pancreatic Cancer Cell Thermal Response to Heat Ablation or Cryoablation [O] . Kenneth W. Baumann, John M. Baust, Kristi K. Snyder, 2017

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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。

A Coupled Computer Code for the Transient Thermal Response and Ablation of Non-Charring Heat Shields and Nose Tips

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