一种基于特斯拉阀结构的微混合器设计、模拟及其试验研究

微混合器是常见的用于流体混合的设备，由于特斯拉阀结构简单稳定，流动方式特殊，具有开发微混合器的潜质。本文通过数值模拟的方法，在特斯拉阀结构以及前期研究的基础上，改进并优化了一种特斯拉型的微混合器，利用流体力学软件（Fluent）研究了不同θ角度以及不同雷诺数下的混合程度，并对该结构的混合效果进行了流场分析以及试验验证。结果表明，该新型微混合器的最佳几何参数为θ=30°。两股流体在Re=52.5、混合长度为50mm时，混合程度η=0.9647，体系压降为330.45Pa。该微混合器的操作压降较低，相对于先前结构，混合性能更好，混合长度更短。

Design,simulation and experimental study of a micromixer based on Tesla valve structure

Micromixer is a common equipment used for fluid mixing. Tesla valve has the potentiality to develop into micromixer due to its simple, stable structure and the special flow mode. In this paper, a Tesla-type micromixer was designed and optimized on the basis of the Tesla valve and previous research by numerical simulation. The fluid dynamics software (Fluent) was used to study the mixing index under different angles (θ) and different Reynolds numbers. In addition, the mixing index of the structure was verified by flow field analysis and experiments. The results showed that the best geometric parameter of new Tesla-type micromixer is θ=30°. When Reynolds number is 52.5, the mixing length of two fluids is 50mm, the mixing index η is 0.9647 and pressure drop of the system is 330.45Pa. Compared to previous structures, the micromixer in this study has lower pressure drop, higher mixing index and shorter mixing length.