NUMERICAL SIMULATION OF HYDRODYNAMIC CHARACTERISTICS ON AN ARC CROWN WALL USING VOLUME OF FLUID METHOD BASED ON BFC

• Published in: Journal of hydrodynamics. Series B 2011-12, Vol.23 (6), p.767-776
• Main Authors: LI, Xue-yan, REN, Bing, WANG, Guo Yu, WANG, Yong-xue
• Format: Article
• Language: English
• Subjects: arc crown wall; Body Fitted Coordinate (BFC); Computational fluid dynamics; Computer simulation; Engineering; Engineering Fluid Dynamics; Fluid flow; Fluids; Hydrodynamics; Hydrology/Water Resources; Mathematical models; Navier-Stokes equations; Navier-Stokes方程; Numerical and Computational Physics; SIMPLE scheme; SIMPLE算法; Simulation; staggered grid; VOF方法; Volume Of Fluid (VOF) method; Walls; 坐标变换方法; 墙; 数值模拟; 水动力特性; 流体体积法
• ISSN: 1001-6058; 1878-0342
• DOI: 10.1016/S1001-6058(10)60175-8

In the present study, a new algorithm based on the Volume Of Fluid (VOF) method is developed to simulate the hydrodynamic characteristics on an arc crown wall. Structured grids are generated by the coordinate transform method in an arbitrary complex region. The Navier-Stokes equations for two-dimensional incompressible viscous flows are discretized in the Body Fitted Coordinate (BFC) system. The transformed SIMPLE algorithm is proposed to modify the pressure-velocity field and a transformed VOF method is used to trace the free surface. Hydrodynamic characteristics on an arc crown wall are obtained by the improved numerical model based on the BFC system (BFC model). The velocity field, the pressure field and the time profiles of the water surface near the arc crown wall obtained by using the BFC model and the Cartesian model are compared. The BFC model is verified by experimental results.