Enhanced heat transfer and flow resistance characteristics of high temperature flow regulating valves with Tesla cooling structure

作者：Yayun Zhang, Yunzhi Liu, He Yang, Jianyang Deng, Chang Zhou, Shukai Luo, S. S. Li, Jinghui Peng, Songjing Li · 发表于：Physics of Fluids · 年份：2025 · DOI：10.1063/5.0268769 · 被引用次数：4 · 研究领域：Refrigeration and Air Conditioning Technologies、Advanced Sensor Technologies Research、Heat Transfer and Boiling Studies

Cooling channels are typically integrated into high temperature flow regulating valves to mitigate the adverse effects of elevated temperatures on the operation of digital valves and embedded sensors. However, conventional straight cooling channels often suffer from inefficient heat dissipation and excessive pressure losses. In this study, a novel high temperature flow regulating valve incorporating 12 Tesla cooling channels is proposed to simultaneously optimize heat transfer enhancement and flow resistance reduction. Three-dimensional steady-state numerical simulations, based on the Navier–Stokes equations (Laminar flow model), were conducted to analyze the pressure, temperature, Colburn factor (j), and friction factor (f). The Colburn factor (j) was determined from the relationship between heat absorption, surface temperature difference, heat transfer area, and mass velocity of the fluid, while the friction factor (f) was derived from the correlation between the inlet-outlet pressure difference, hydraulic diameter, and mass velocity of the fluid. Numerical results reveal that the mixed cooling capacity of the Tesla structure improves with increasing inlet pressure. Among the 12 schemes, Scheme 1 exhibited the highest heat transfer enhancement with the maximum Colburn factor (j) of 0.173, while Scheme 5 demonstrated the best flow performance with the lowest friction factor (f) of 1.357. Experimental validation confirmed close agreement between the experimental data and nume...