基于极高密度气固两相TCP流稳定螺旋涡的高效螺旋输送机理研究

高速旋转螺旋作用下的散体与其中的空气在封闭同心圆环柱空间内可形成极高密度气固两相TCP流稳定螺旋涡（SHV），突破了螺旋输送机主要依靠摩擦力输送散体的传统机理，极大提高了螺旋输送机的输送效率。本项目提出的涡旋输送机理是高效输送机理，主要分析螺旋、气相、固相（散体）相互作用关系并建立其动力学模型，研究螺旋作用下同心圆环柱空间内气固两相TCP-SHV流场特性及稳定性条件，研究并基本实现该TCP-SHV流场参数的工程化。通过采用EMMS-E/L组合法，获取该TCP-SHV的数学模型及形成条件，并根据实际参数进行修正，再经实验验证，建立新型高效螺旋输送机理论设计方法。本项目是气固两相流研究中的崭新课题，理论上具原创性，属于Nature和Science 2005年列出的100个科学难题之一，科学意义和价值显著，应用上具创新性，利于高效螺旋输送机研发，经济、社会和国防意义很大，应用前景广阔。

The granular materials can form TCP-SHV with the air in Ultra High Dense gas-solid Two Phase Flow in closed concentric circular cylindrical space under the action of high-speed rotating screw. It can improve transporting efficiency of screw conveyor, which broke traditional conveying thoery mainly relies on friction forces to transport granular materials. Vortex conveying theory proposed in this project is efficient screw conveying theory, which mainly analyse the interactions among screw, gas phase, solid phase(bulk solid) and build kinetic model of them. It study flow field features and stability condition of TCP-SHV in gas-solid two phase flow. And it also study and realize engineering approach of this flow field parameters. This project obtains mathematical model and formation condition of this TCP-SHV by means of a combination method Of EMMS-E/L and revises it according to actual parameter. Finally it build new efficient theorial design method bymeans of experimental verification. This project is a new subject of gas-solid two-phase flow, which has a certain originality in theory, belongs to one of 100 scientific challenges listed in Nature and Science in 2005. And it has a certain innovation in application, which is beneficial to study and development of efficient screw conveyor, and has great economical, social and defense significance, and its application prospect is very broad.