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RISEvaluation of Large Eddy Simulation and RANS for Determining Hydraulic Performance of Disinfection Systems for Water Treatment
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: ReynoldsAveraged Navier–Stokes (RANS) simulation has been demonstrated to be a powerful and efficient approach for conducting numerical assessment of the hydraulic performance of disinfection systems for water treatment ...
Large-Eddy Simulation of Shallow Water Langmuir Turbulence Using Isogeometric Analysis and the Residual-Based Variational Multiscale Method
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: shelf flow where LC extends to the bottom and interacts with the sea bed boundary layer. The governing LES equations are the Craik-Leivobich equations (Tejada-Martínez, A. E., and Grosch, C. E., 2007, J. Fluid Mech...
Reynolds-Averaged Navier-Stokes Simulation of the Flow and Tracer Transport in a Multichambered Ozone Contactor
Publisher: American Society of Civil Engineers
Abstract: This paper reports on results from steady-state Reynolds-averaged Navier-Stokes simulation (RANSS) of the flow and passive nonreactive tracer transport inside a multichambered, laboratory-scale ozone contactor using a ...
Hydraulic Efficiency in RANS of the Flow in Multichambered Contactors
Publisher: American Society of Civil Engineers
Abstract: Accurate and practical models are in demand for optimization of ozone contactor designs. This paper reports results from Reynolds-averaged Navier-Stokes simulation (RANS) of the flow and passive nonreactive tracer transport ...
Large-Eddy Simulation of a Coastal Ocean under the Combined Effects of Surface Heat Fluxes and Full-Depth Langmuir Circulation
Publisher: American Meteorological Society
Abstract: esults are presented from the large-eddy simulations (LES) of a wind-driven flow representative of the shallow coastal ocean under the influences of Langmuir forcing and surface heating and cooling fluxes. Langmuir (wind ...
Optimization of Value of CVP's Hydropower Production
Publisher: American Society of Civil Engineers
Abstract: CVPOP is a nonlinear programming model for the optimization of the multi‐month operation of the hydropower system of the California Central Valley Project (CVP). CVPOP includes the dependence of energy values within each ...
Impacts of Flow and Tracer Release Unsteadiness on Tracer Analysis of Water and Wastewater Treatment Facilities
Publisher: American Society of Civil Engineers
Abstract: Computational fluid dynamics (CFD) was used to investigate how residence time analysis based on passive tracer transport in environmental and chemical engineering fluid systems can be significantly affected by flow or ...
Developing a Quantitative Modeling Framework for Risk Propagation Analysis: Application to Preconstruction Delays
Publisher: American Society of Civil Engineers
Abstract: Research on preconstruction delays has been limited, mainly focusing on identifying delays and ranking risks using traditional methods. This study introduces a new quantitative framework to evaluate risks by modeling them ...
Toward a K-Profile Parameterization of Langmuir Turbulence in Shallow Coastal Shelves
Publisher: American Meteorological Society
Abstract: nteraction between the wind-driven shear current and the Stokes drift velocity induced by surface gravity waves gives rise to Langmuir turbulence in the upper ocean. Langmuir turbulence consists of Langmuir circulation ...
One- and Three-Dimensional Computational Fluid Dynamics Model Comparison of the Treatment Performance of a Full-Scale Oxidation Ditch
Publisher: ASCE
Abstract: This work developed three computational fluid dynamics (CFD) models of a full-scale oxidation ditch, one three-dimensional (3D) model and two one-dimensional (1D) models, to compare their predicted wastewater treatment ...