Effects of U-shaped two-step throttling groove parameters on cavitation erosion characteristics
Wenhua Jia 1  
,   Yanyan Liu 1,   Chenbo Yin 2,   Guo Li 1,   Dasheng Zhu 1,   Shen Ding 1
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School of Mechanical Engineering, Nanjing Institute of Technology, Jiangsu, China
School of Mechanical and Power Engineering, Nanjing University of Technology, Jiangsu, China
Wenhua Jia   

School of Mechanical Engineering, Nanjing Institute of Technology, Jiangsu, China
Submission date: 2021-03-09
Final revision date: 2021-04-30
Acceptance date: 2021-05-13
Online publication date: 2021-09-04
Publication date: 2021-10-20
Throttling usually occurs when a fluid passes through an orifice, sometimes even severe cav- itation erosion may occur. In this study, the equation for the cavitation index of a throttling valve was proposed and the cavitation erosion area in the throttle valve was found to change its position with the orifice opening (X). Cavitation features of singular and two-port se- ries throttling grooves were characterized by defining cavitation indexes σ1and σ2, because the cavitation index-σ can determine the occurrence and intensity of cavitation. Then the indexes σ1 and σ2 included internal geometric parameters and external pressure boundaries were obtained, and cavitation indexes curves σ1-X and σ2-X were also plotted. From the curves of the cavitation index, it was observed that cavitation concentration section also would transfer with opening X changes in the U-shaped groove. The depth of the U-shaped groove had a more evident impact on cavitation, whereas the effect of width on cavitation erosion was not so obvious. The intensity of cavitation erosion when the fluid flowed into the orifice section of the U-shaped groove was always larger than that when the fluid flowed away.
Amirante R., Distaso E., Tamburrano P., 2014, Experimental and numerical analysis of cavitation in hydraulic proportional directional valves, Energy Conversion and Management, 87, 208-219.
Chen Y., Li J., Gong Z., Chen X., Lu C., 2019, Large eddy simulation and investigation on the laminar-turbulent transition and turbulence-cavitation interaction in the cavitating flow around hydrofoil, International Journal of Multiphase Multiphase Flow, 112, 300-322.
Corchuelo O.J., Soto L.L., 2017, Caries prevalence of preschool age children in community homes of the Cauca Valle and related social factors, Revista Odontológica Mexicana, 21, 4, 229-234.
Favrel A., Pereira J.G. Jr., Landry C., Müller A., Yamaishi K., Avellan F., 2019, Dynamic modal analysis during reduced scale model tests of hydraulic turbines for hydro-acoustic characterization of cavitation flows, Mechanical Systems and Signal Processing, 117, 81-96.
Ghiji M., Goldsworthy L., Brandner P.A., Garaniya V., Hield P., 2017, Analysis of diesel spray dynamics using a compressible Eulerian/VOF/LES model and microscopic shadowgraphy, Fuel, 188, 352-366.
Gnanaskandan A., Mahesh K., 2016, Large Eddy Simulation of the transition from sheet to cloud cavitation over a wedge, International Journal of Multiphase Flow, 83, 86-102.
Han M., Liu Y., Wu D., Zhao X., Tan H., 2017, A numerical investigation in characteristics of flow force under cavitation state inside the water hydraulic poppet valves, International Journal of Heat and Mass Transfer, 111, 1-16.
Jiang G., Zhang Y., Wen H., Xiao G., 2015, Study of the generated density of cavitation inside diesel nozzle using different fuels and nozzles, Energy Conversion and Management, 103, 208-217.
Karrholm F.P., Weller H., Nordin N., 2007, Modelling injector flow including cavitation effects for diesel applications, Proceedings of ASME/JSME 5th Joint Fluids Engineering Conference: Fluids Engineering Division Summer Meeting, 2, 465-474.
Kim H., Kim S., 2019, Optimization of pressure relief valve for pipeline system under transient induced cavitation condition, Urban Water Journal, 16, 10, 718-726.
Koukouvinis P., Naseri H., Gavaises M., 2017, Performance of turbulence and cavitation models in prediction of incipient and developed cavitation, International Journal of Engine Research, 18, 4, 333-350.
Lee M.G., Lim C.S., Han S.H., 2016, Shape design of the bottom plug used in a 3-way reversing valve to minimize the cavitation effect, International Journal of Precision Engineering and Manufacturing, 17, 3, 401-406.
Liu W., Kang Y., Wang X., Liu Q., Fang Z., 2020, Integrated CFD-aided theoretical demonstration of cavitation modulation in self-sustained oscillating jets, Applied Mathematical Modelling, 79, 521-543.
Liu X., Xu H., Li B., Sun F., 2019, Numerical analysis for unsteady cavitation characteristics in throttle valve, Journal of Vibration and Shock, 38, 3, 89-95.
Požar T., Pirc Ž., Susič E., Petkovšek R., 2020, Simplified detection of cavitation threshold in control valves, Applied Acoustics, 165, 107320.
Šarc A., Stepišnik-Perdih T., Petkovšek M., Dular M., 2017, The issue of cavitation number value in studies of water treatment by hydrodynamic cavitation, Ultrasonics Sonochemistry, 34, 51-59.
Sun L., Guo P., Luo X., 2020, Numerical investigation on inter-blade cavitation vortex in a Franics turbine, Renewable Energy, 158, 64-74.
Yaghoubi H., Madani S.A.H., Alizadeh M., 2018, Numerical study on cavitation in a globe control valve with different numbers of anti-cavitation trims, Journal of Central South University, 25, 11, 2677-2687.