World Environmental and Water Resources Congress 2018
Effect of Rheology for Flow past a Bottom Rack
Publication: World Environmental and Water Resources Congress 2018: Hydraulics and Waterways, Water Distribution Systems Analysis, and Smart Water
ABSTRACT
This paper presents the numerical simulation of flow past a bottom rack using CFD software, Flow-3D. The governing equations for fluid flow are the Reynolds-averaged Navier–Stokes equations (RANS) along with the volume of fluid (VOF) equation for surface tracking. In addition, the renormalized group (RNG) turbulence model is also used. The numerical model is validated by comparing with experimental results for pressure and velocity profile available in the literature. Results for free surface profile and velocity profile are also presented. Five different fluids are considered to study the effect of rheology on discharge characteristics of the bottom rack. As indicated in the simulations, viscosity is the dominating factor influencing the discharge through the bottom rack. Density also has an impact on the discharge characteristics. Based on the cases studied, recommendations for the size of the bottom rack, considering rheological characteristics of the fluid, are made.
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REFERENCES
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Information & Authors
Information
Published In
World Environmental and Water Resources Congress 2018: Hydraulics and Waterways, Water Distribution Systems Analysis, and Smart Water
Pages: 160 - 168
Editor: Sri Kamojjala, Las Vegas Valley Water District
ISBN (Online): 978-0-7844-8142-4
Copyright
© 2018 American Society of Civil Engineers.
History
Published online: May 31, 2018
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