• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>AIAA Scitech Forum and Exposition >Validation of Boltzmann discrete velocity method flow solver for diatomic gases and multi-component monatomic gas mixtures
【24h】

Validation of Boltzmann discrete velocity method flow solver for diatomic gases and multi-component monatomic gas mixtures

机译：玻尔兹曼离散速度方法求解双原子气体和多组分单原子气体混合物的验证

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

A new parallel generalized unstructured grid solver for simulating diatomic gases and multi-component monatomic gas mixtures is presented. The approach is based on the direct numerical solution of the semi-classical Boltzmann equation using a discrete velocity method (DVM). This supports accurate prediction of non-continuum flows in near-vacuum rarefied flow regimes. For applications involving mixed continuum-rarefied environments, the rarefied and continuum flow regimes are solved separately through the use of kinetic Boltzmann DVM and hybrid RANS/LES approaches, respectively. The framework upon which the solvers are developed is presented along with a detailed description of the direct Boltzmann DVM solution procedure. The accuracy of the Boltzmann DVM predictions is validated by comparisons with alternative numerical data, as well as experimental data for shock structure in diatomic gases and multi-component monatomic gas mixtures. Highspeed flow over a sphere is also presented to demonstrate the solver capabilities for gases in near-vacuum conditions, and with internal geometry.
机译：提出了一种新型的并行广义非结构化网格求解器，用于模拟双原子气体和多组分单原子气体混合物。该方法基于使用离散速度法（DVM）的半经典Boltzmann方程的直接数值解。这支持了在接近真空的稀薄流态下非连续流的准确预测。对于涉及混合连续体提升环境的应用，稀疏流态和连续体流动态分别通过使用动力学Boltzmann DVM和混合RANS / LES方法来解决。提出了开发求解器的框架以及对直接Boltzmann DVM解决方案过程的详细说明。通过与替代数值数据以及双原子气体和多组分单原子气体混合物中的冲击结构的实验数据进行比较，可以验证Boltzmann DVM预测的准确性。还介绍了在球体上的高速流动，以展示在近真空条件下以及内部几何形状的气体的求解器功能。

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