Zhang Yu-Liang, Tong Jiang-Bo, Zhu Zu-Chao
College of Mechanical Engineering and Key Laboratory of Air-Driven Equipment Technology of Zhejiang Province, Quzhou University, Quzhou, 324000, China.
School of Mechanical Engineering, Hunan University of Technology, Zhuzhou, 412007, China.
Sci Rep. 2023 Aug 1;13(1):12496. doi: 10.1038/s41598-023-39758-3.
To study the effect of the width-to-narrow ratio on the forward and reverse flow characteristics of the Tesla valve, five different models of the Tesla valve with different width-to-narrow ratios are established in this paper. The numerical calculations of forward and reverse flow under different working conditions are carried out by the CFD method in the laminar flow regime, and the reliability of the numerical calculation method is verified by comparing it with the experimental results. The results show that: in forward flow, the main flow-through channel is not related to the width-to-narrow ratio, the flow rate of the straight channel increases with the increase of the width-to-narrow ratio, and the static pressure in the diversion section is in the shape of "∞"; while in reverse flow, the main flow-through channel is weakly related to the width-to-narrow ratio, the flow rate of the arc channel is not increased with the increase of the width-to-narrow ratio, and the static pressure in the diversion section is in the shape of "bench". As the width-to-narrow ratio decreases, the pressure drop during forward and reverse flow becomes more significant.
为研究宽高比对特斯拉阀正向和反向流动特性的影响，本文建立了五种不同宽高比的特斯拉阀模型。在层流状态下，采用计算流体力学（CFD）方法对不同工况下的正向和反向流动进行了数值计算，并通过与实验结果对比验证了数值计算方法的可靠性。结果表明：在正向流动中，主流道与宽高比无关，直管段流量随宽高比增大而增加，导流段静压呈“∞”形；而在反向流动中，主流道与宽高比关系较弱，弧形通道流量不随宽高比增大而增加，导流段静压呈“台阶”形。随着宽高比减小，正向和反向流动时的压降变得更加显著。
