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Removing Grit During Wastewater Treatment:CFD Analysis of HDVS Performance
Author(s) -
Meroney Robert N.,
Sheker Robert E.
Publication year - 2016
Publication title -
water environment research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.356
H-Index - 73
eISSN - 1554-7531
pISSN - 1061-4303
DOI - 10.2175/106143015x14212658614478
Subject(s) - computational fluid dynamics , separator (oil production) , particle size , mechanics , volumetric flow rate , particle size distribution , vortex , materials science , environmental science , chemistry , thermodynamics , physics
Computational Fluid Dynamics (CFD) was used to simulate the grit and sand separation effectiveness of a typical hydrodynamic vortex separator (HDVS) system. The analysis examined the influences on the separator efficiency of: flow rate, fluid viscosities, total suspended solids (TSS), and particle size and distribution. It was found that separator efficiency for a wide range of these independent variables could be consolidated into a few curves based on the particle fall velocity to separator inflow velocity ratio, W s /V in . Based on CFD analysis it was also determined that systems of different sizes with length scale ratios ranging from 1 to 10 performed similarly when W s /V in and TSS were held constant. The CFD results have also been compared to a limited range of experimental data.