十六烷基三甲基氯胺盐减阻流体节能机理的研究

The application of drag-reducing additives such as CTAC(Cetyltrimethyl Ammonium Chloride) can not only reduce the drag of fluid-tranporting system and the energy-consumption of pumps but can also decrease the loss of thermal energy, resulting in the energy savings. The process, mechanism and changing law of the forming of CTAC drag-reducing flow micelles are investigated using both micro and macro approaches to reveal the mechanism of drag-reducing, turbulence and heat transfer of flow affected by the micelle. A theory and a method to actively control the energy conserving transportation of CTAC drag-reducing flows are proposed depending on the turbulence and heat transfer characteristics of drag-reducing flow. Theory foundation of developing energy conserving transportation techniques of new CTAC drag-reducing flow is provided in the study. The results demonstrate that extension of the viscous sub-layer, due to the SIS(Shear Induced Structure), is the main reason for the drag reduction. In addition, controlling the drag-reducing performance of CTAC drag-reducing flow can be realized through the breakage and reconstruction of the SIS. The merits of the project results are not limited to the study of CTAC drag-reducing fluid, the study also provides some supporting data and theory in favor of the industrial application of the drag-reducing fluid. The study shows a bright future for the application of CTAC flow in industry and is of reference value and the practical meaning.

探索十六焕基三甲基氯胺盐(简称CTAC)在流体中形成胶团的过程，机理及变化规律，揭示在其作用下流体的减阻，湍流和传热机理．根据流体湍流和传热特性，提出CTAC减阻流体节能传输自适应控制的理论和方法，为发展新型CATA流体节能传输技术提供理论依据。本研究成果有助于其它添加剂流体的湍流和传热研究，对节能也具有重要意义。