Calculation of the heat flux in a plane layer of a diatomic gas with allowance for energy accommodation

Savkov SA; Tyulkina EY

首页> 外文期刊>Technical physics >Calculation of the heat flux in a plane layer of a diatomic gas with allowance for energy accommodation

【24h】

Calculation of the heat flux in a plane layer of a diatomic gas with allowance for energy accommodation

机译：计算双原子气体平面层中的热通量并考虑能量吸收

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

The heat flux in a plane layer of a diatomic gas is calculated in an approximation linear in temperature difference. General expressions (independent of the form of the kinetic equation and the solution method) for the heat flux as a function of the energy accommodation coefficient are derived. The accuracy of heat flux calculation versus the number of terms in the distribution function is estimated with the method of semispatial moments.

机译：双原子气体的平面层中的热通量以温度差的近似线性计算。导出了热通量随能量调节系数变化的一般表达式（与动力学方程式和求解方法无关）。用半空间矩方法估算了热通量计算的准确性与分布函数中项数的关系。

著录项

来源
《Technical physics》 |2006年第2期|共5页
作者
Savkov SA; Tyulkina EY;
展开▼
作者单位

展开▼
收录信息
原文格式 PDF
正文语种 eng
中图分类物理学;
关键词
PARALLEL PLATES; POLYATOMIC-GAS; KINETIC-THEORY;

机译：平行板;空气动力学;动力学理论;

相似文献

外文文献
中文文献
专利

1. Calculation of the heat flux in a plane layer of a diatomic gas with allowance for energy accommodation [J] . Savkov SA, Tyulkina EY Technical physics . 2006,第2期

机译：计算双原子气体平面层中的热通量并考虑能量吸收
2. Accounting for energy accommodation in calculating the heat flux from a spherical particle in a diatomic gas [J] . S. A. Savkov, A. A. Yushkanov Journal of engineering physics and thermophysics . 2002,第5期

机译：在计算双原子气体中球形颗粒的热通量时考虑能量调节
3. On allowance for energy accommodation in calculating the heat flux from a spherical particle at arbitrary Knudsen numbers [J] . S. A. Savkov Journal of engineering physics and thermophysics . 2002,第3期

机译：在计算任意Knudsen数下球形颗粒的热通量时要考虑能量的容限
4. INVESTIGATION OF BOILING HEAT TRANSFER AND CRITICAL HEAT FLUX ENHANCEMENT FOR SIC AND GRAPHENE LAYERS ON ITO SURFACES [C] . Han Seo, Soon-Yong Kwon, Seok Bin Seo, ASME International Conference on Micro/Nanoscale Heat and Mass Transfer . 2014

机译：ITO表面SiC和石墨烯层沸腾传热和临界热通量增强研究
5. Layered heat flux gauges for aeroentry application. [D] . Oishi, Tomomi. 2003

机译：用于航空应用的分层热通量计。
6. Ni-Rich Layered Oxide with Preferred Orientation (110) Plane as a Stable Cathode Material for High-Energy Lithium-Ion Batteries [O] . Fangkun Li, Zhengbo Liu, Jiadong Shen, 2020

机译：具有优选取向（110）平面的Ni的分层氧化物作为高能量锂离子电池的稳定阴极材料
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. Calculation of Transmission and Surface-Wave Data for Plane Multilayers and Inhomogeneous Plane Layers [R] . Jack H. Richmond 1963

机译：平面多层和非均匀平面层的透射和表面波数据计算

Calculation of the heat flux in a plane layer of a diatomic gas with allowance for energy accommodation

摘要

著录项

相似文献

相关主题

期刊订阅