突扩气固两相流动相间相互作用机理与湍流控制的研究

Research on the mechanics of turbulent interphaseinteraction and two-phase turbulent control was one of the most.important and leading foundation topics. It was with academic valueand engineering application prospect was extensive. Because experimentresearch about this topic was so hard and phenomenon and process weremore complicated than single-phase turbulent flow, study work justbegan oversea about in 1980’s and 1990’s. Few people proceed to study.on control of two-phase turbulent flow. In this project, based on thestudy of effects which gas phase applied to particle phase, usingexperiment approach of whole flow field visualization and uantitativemeasurement, modifying artificial initial disturbance, combining withresults of large eddy simulation, taking gas solid two-phase backward.facing step flow as subject investigated, mechanics of interphaseinteraction between gas phase and particle phase and regularity ofartificial initial two phase turbulent flow control were discussed..The present research paves a way for the further study of turbulencemodification and control of two-phase flow.

用流动显示技术和两相粒子同时成象测速技术获得气固两相突扩流动的流场结构和全场定量数据，旨在研究其中的两相湍流相互作用机理及各种初始扰动对两相湍流场的影响。进而提出新的气固两相耦合物理数学模型，实现全面反映两相湍流流动相间相互作用机制的数值模拟，为深入探讨两相间湍流相互作用机理和进一步控制两相湍流提供理论和技术依据。