Large Eddy Simulation of Effect of Geometric Parameters on Low Pressure of Turbulent Flow over Gate Slot

Authors

Shihua He, 1. Faculty of Electric Power Engineering, Kunming University of Science & Technology, Kunming 650500, China;;
Lixiang Zhang, 2. Faculty of Architectural Engineering, Kunming University of Science & Technology, Kunming 650500, China;

Abstract

Abstract: The turbulent flow over the hydraulic plane gate slot was studied using large eddy simulation method. The effects of geometric parameters including width-to-depth ratio, stagger ratio, slope ratio and fillet ratio on hydraulic characteristics within and near the gate slot were simulated systematically. According to the vulnerable cavitation locations of the flow over the slot, the pressure distributions in swirl area and the separation zone at the rear of downstream corner of the slot were investigated emphatically. The results show that the effects of width-to-depth ratios and stagger ratios on the pressure distribution of the flow are significantly. The change of the width-to-depth ratio will affect the conversion of extremely low pressure area of the flow. The appropriate stagger ratio can eliminate the negative pressure of the separation zone. The settings of slopes and fillets can improve flow state and the pressure distributions to a certain extent.

Recommended Citation

He, Shihua and Zhang, Lixiang (2020) "Large Eddy Simulation of Effect of Geometric Parameters on Low Pressure of Turbulent Flow over Gate Slot," Journal of System Simulation: Vol. 27: Iss. 5, Article 23.
Available at: https://dc-china-simulation.researchcommons.org/journal/vol27/iss5/23

First Page

1081

Revised Date

2014-11-03

DOI Link

https://doi.org/

Last Page

1086

CLC

TP391.9

Recommended Citation

He Shihua, Zhang Lixiang. Large Eddy Simulation of Effect of Geometric Parameters on Low Pressure of Turbulent Flow over Gate Slot[J]. Journal of System Simulation, 2015, 27(5): 1081-1086.