Angular Velocity Formula for Turbulent Vortex Chamber Flows

作者：Li Yunjie^*; Guo Qizhong

来源：Journal of Hydraulic Engineering, 2012, 138(5): 467-470.

DOI：10.1061/(ASCE)HY.1943-7900.0000547

• Angular velocity
• Vortex chamber flow
• Rotational flow
• Hydrodynamic separator
• Angular momentum
• Average shear stress
• Torque

Vortex separators are increasingly utilized to remove suspended solids from stormwater runoff. Understanding flow patterns in a confined vortex chamber is crucial when investigating the mechanisms of liquid-solid separation. The angular velocity of fluid motion around the vertical axis is a dominant parameter for determining fluid flow patterns and particle trajectories in a rotational flow field. In this paper, an angular velocity formula, based on the angular-impulse momentum principle coupled with the Rankine vortex model, is derived under steady flow conditions. Comparison of predicted results using this formula to experimental data from a previous study indicates a general agreement. The derived formula can be used to estimate the angular velocity of the rotational flow field in vortex separators with tangential inlet and without internal components. DOI: 10.1061/(ASCE)HY.1943-7900.0000547.

• 出版日期2012-5
• 单位rutgers