NUMERICAL INVESTIGATION OF SUBMERGED HYBRID CAVITATION JET NOZZLE BASED ON STRESS-BLENDED EDDY SIMULATION MODEL

被引：0

作者：

Xie, Honggang ^{[1
]}

Du, Mingjun ^{[1
]}

机构：

[1] School of Mechanical Engineering, Southwest Petroleum University, Chengdu

来源：

Multiphase Science and Technology | 2024年 / 36卷 / 04期

关键词：

cavitation; computational fluid dynamics; structure optimization; submerged jet nozzle; two-phase flow;

D O I：

10.1615/MultScienTechn.2024053540

中图分类号：

学科分类号：

摘要：

Cavitation jet technology is extensively applied in fields such as mechanical processing, rock fragmentation, and energy development. To further enhance the cavitation capability of the nozzle, first a submerged organ pipe-angular hybrid cavitation nozzle model is established using the software SOILDWORKS. Second, the stress blended eddy simulation (SBES) technology is applied, and the jet law of internal and external flow field of submerged cavitation nozzle is studied numerically using FLUENT. Finally, the periodic shedding of cavitation clouds and the velocity characteristics and vapor volume fraction are studied for different expansion or contraction angles. The study revealed that the cavitation first occurs in the expansion section. With the development of cavitation, the asymmetry of the cavitation cloud increases significantly. Under an inlet pressure of 20 MPa, the fluctuation part of velocity is more concentrated. As the pressure increases, the maximum jet distance and velocity also increase. © 2024 by Begell House, Inc.

引用

页码：25 / 46

页数：21

共 20 条

[1]

Bai W., Tijsseling A.S., Wang J., Duan Q., Zhang Z., Large Eddy Simulation Investigations of Periodic Cavitation Shedding with Special Emphasis on Three-Dimensional Asymmetry in a Scaled-Up Nozzle Orifice, J. Fluids Eng, 143, 7, (2021)

[2]

Bankoff S.G., A Variable Density Single-Fluid Model for Two-Phase Flow with Particular Reference to Steam-Water Flow, J. Heat Transf, 82, 4, pp. 265-272, (1960)

[3]

Binnie A.M., Cavitation. By R.T. Knapp, J.W. Daily and F.G. Hammitt. McGraw Hill, 1970. 578 pp.$25.00, J. Fluid Mech, 54, 1, pp. 189-191, (1972)

[4]

Ding P., Wang S., Chen K., Numerical Investigation of Turbulent Shear Flows Using Production‐Limited Delayed Detached‐Eddy Simulation, Can. J. Chem. Eng, 98, 5, pp. 1225-1236, (2020)

[5]

Dong W., Yao L., Luo W., Numerical Simulation of Flow Field of Submerged Angular Cavitation Nozzle, Appl. Sci, 13, 1, (2023)

[6]

Frobenius M., Schilling R., Bachert R., Stoffel B., Ludwig G., Three-Dimensional Unsteady Cavitation Effects on a Single Hydrofoil and in a Radial Pump–Measurements and Numerical Simulations, Fifth Int. Sympos. Cavitat, (2003)

[7]

Lestinen S., Wesseling M., Kosonen R., Koskela H., Muller D., Airflow Characteristics under Planar Opposed Ventilation Jets in a Controlled Indoor Environment, E3S Web Conf, 111, (2019)

[8]

Menter F., Stress-Blended Eddy Simulation (SBES)—A New Paradigm in Hybrid RANS-LES Modeling, Notes Numer. Fluid Mech. Multidisc. Design, pp. 27-37, (2018)

[9]

Pipp P., Hocevar M., Dular M., Challenges of Numerical Simulations of Cavitation Reactors for WaterTreatment – An Example of Flow Simulation inside a Cavitating Microchannel, Ultrason. Sonochem, 77, (2021)

[10]

Schnerr G.H., Sauer J., Physical and Numerical Modeling of Unsteady Cavitation Dynamics, ICMF-2001, Fourth Int. Conf. Multiphase Flow, (2001)

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