• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>International Journal of Heat and Mass Transfer >Numerical study of transient conjugate heat transfer of the cryo-supersonic air-quenching based on a Mach-weighted pressure-based method
【24h】

Numerical study of transient conjugate heat transfer of the cryo-supersonic air-quenching based on a Mach-weighted pressure-based method

机译：基于马赫加权压力法的超音速空气淬火瞬态共轭传热数值研究

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

In this paper, a Mach-weighted compressible SIMPLEM algorithm on collocated curvilinear grids is developed to investigate the transient conjugate heat transfer characteristics of the cryo-supersonic air quenching of a metal disk, which further integrates the efficiency of the pressure-based methods in low Mach number flows and the robustness of density-based methods in high Mach number flows by a Mach-weighted function. The adoption of the linear interpolation or the AUSM+ flux definitions in the conventional Rhie-Chow momentum interpolation depends on the local Mach number. In order to achieve a synchronous and efficient heat transfer between fluid and solid domain, a unified conjugate heat transfer model is established by considering the solid domain as an incompressible fluid with zero velocity and large viscosity on the basis of a quasi-steady approach. The oxide scale forming on the surface of the metal disk is taken account into the calculation due to its major impact on the transient conjugate heat transfer. As an example to validate the accuracy and reliability of the developed formulation, the conjugate heat transfer process of the cryo-supersonic air-quenching of a Q235 metal disk is implemented both numerically and experimentally. The transient conjugate heat transfer characteristics and the effects of inlet temperature and pressure are analyzed in detail as well. (C) 2019 Published by Elsevier Ltd.
机译：本文提出了一种在并置曲线网格上的马赫加权可压缩SIMPLEM算法，以研究金属圆盘的超音速空气淬火的瞬态共轭传热特性，进一步整合了基于压力的方法在低温下的效率。马赫数流和基于马赫加权函数的高马赫数流中基于密度的方法的鲁棒性。在传统的Rhie-Chow动量插值中采用线性插值或AUSM +通量定义取决于局部马赫数。为了实现流体与固体域之间的同步高效传热，在准稳态方法的基础上，将固体域视为速度为零，粘度较大的不可压缩流体，建立了统一的共轭传热模型。由于其对瞬态共轭传热的主要影响，因此将计算在金属盘表面上形成的氧化皮考虑在内。作为验证所开发配方的准确性和可靠性的示例，在数值和实验上都实现了Q235金属圆盘的超音速冷空气淬火的共轭传热过程。还详细分析了瞬态共轭传热特性以及入口温度和压力的影响。 （C）2019由Elsevier Ltd.发布

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号