精品文档---下载后可任意编辑三维气固两相混合层中相间耦合作用的直接数值模拟的开题报告题目：三维气固两相混合层中相间耦合作用的直接数值模拟摘要：针对工业过程中气固两相混合层相间耦合作用的讨论需求，本文提出了一种直接数值模拟方法。该方法通过对气相和固相之间的相互作用力进行数值求解，得到了不同空间位置上两相之间的耦合力大小和方向，在此基础上，对混合层中的流动和颗粒运动进行了模拟，分析了相间耦合对混合层结构和运动特性的影响。该方法的关键在于求解气相和固相之间的相互作用力，本文选择了一种经典的 DEM-FLUENT 相耦合方法，并对其中的一些关键参数进行了优化。通过对比实验结果和模拟结果，验证了该方法的可靠性和准确性。讨论成果表明，在混合层中，气相和固相之间存在着显著的相互作用，这种耦合作用对于混合层的运动特性、颗粒分布和结构等方面都有着重要的影响。关键词：混合层、相间耦合、直接数值模拟、DEM-FLUENT 相耦合方法Abstract:A direct numerical simulation method is proposed for the study of inter-phase coupling effects in gas-solid mixture layers in industrial processes. By numerically solving the interaction forces between the gas phase and the solid phase, the coupling force between the two phases at different spatial positions is obtained. Based on this, the flow and particle motion in the mixing layer are simulated, and the effect of inter-phase coupling on the structure and motion characteristics of the mixing layer is analyzed.The key to this method lies in the numerical calculation of the interaction force between the gas phase and the solid phase. A classical DEM-FLUENT phase coupling method is selected and some key parameters are optimized. The reliability and accuracy of the method are verified by comparing experimental results with simulation results.精品文档---下载后可任意编辑The research results show that there is a significant inter-phase interaction in the mixing layer, and this coupling effect has an important influence on the motion characteristics, particle distribution, and structure of the mixing layer.Keywords: mixing layer, inter-phase coupling, direct numerical simulation, DEM-FLUENT phase coupling method.
