渦流二極管的設(shè)計(jì)優(yōu)化與實(shí)驗(yàn)研究
[Abstract]:Eddy-current diode is a kind of element which controls the flow of fluid in one-way, and its function is similar to that of reverse stop valve. Because of its simple structure, no rotating parts, no external control and power, high reliability and many other advantages, it has been widely used in medicine, nuclear industry, petrochemical industry and so on. It can also be used for inactive residual heat removal from fluorine salt cooled high temperature reactor. In this paper, the internal flow characteristics of vortex diodes are simulated by computational fluid dynamics (CFD). Then, based on the analysis of the simulation results, a geometric structure optimization scheme is proposed, which is to increase the cone angle at the center of the bottom of the vortex cavity. The radius of the transition arc at the junction of the tangential tube and the vortex cavity is changed and the optimum size is obtained by numerical simulation and experiments. In addition, according to the similarity theory, the applicability of the water experiment results on molten salt is analyzed, and the simulation method is verified by numerical calculation, which provides guidance for the further optimization of the design of eddy current diodes.
【學(xué)位授予單位】:中國科學(xué)院研究生院(上海應(yīng)用物理研究所)
【學(xué)位級(jí)別】:碩士
【學(xué)位授予年份】:2015
【分類號(hào)】:TL35;TH134
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