论文标题
由于射流的数值预测侵蚀的数值预测
Numerical prediction of erosion due to a cavitating jet
论文作者
论文摘要
我们通过高分辨率有限体积仿真来研究液体射流的侵蚀潜力。作为热力学模型，我们采用了一种嵌入均匀混合模型的压缩平衡空化方法。为了解决崩溃的蒸气结构的影响并估计侵蚀潜力，考虑了完全的可压缩性。研究了两个不同的操作点，这些操作点具有不同的空化强度，并估计并比较它们的侵蚀潜力。用于此目的的不同方法，包括塌陷检测（Mihatsch等，2015），壁上的最大压力分布以及一种生成数值坑等效物的新方法。详细分析了数值坑等效物的数据，并将其与文献的实验数据进行了比较。此外，提出了两个操作点的全面网格研究。
We numerically investigate the erosion potential of a cavitating liquid jet by means of high-resolution finite volume simulations. As thermodynamic model, we employ a barotropic equilibrium cavitation approach, embedded into a homogeneous mixture model. To resolve the effects of collapsing vapor structures and to estimate the erosion potential, full compressibility is considered. Two different operating points featuring different cavitation intensities are investigated and their erosion potential is estimated and compared. Different methods are used for this purpose, including collapse detection (Mihatsch et al., 2015), maximum pressure distribution on the wall, and a new method of generating numerical pit equivalents. The data of numerical pit equivalents is analyzed in detail and compared with experimental data from the literature. Furthermore, a comprehensive grid study for both operating points is presented.
