Abstract
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.
Original language | English (US) |
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Pages (from-to) | 467-470 |
Number of pages | 4 |
Journal | Journal of Hydraulic Engineering |
Volume | 138 |
Issue number | 5 |
DOIs | |
State | Published - May 10 2012 |
All Science Journal Classification (ASJC) codes
- Civil and Structural Engineering
- Water Science and Technology
- Mechanical Engineering
Keywords
- Angular momentum
- Angular velocity
- Average shear stress
- Hydrodynamic separator
- Rotational flow
- Torque
- Vortex chamber flow