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RISAn Efficient, Conservative, Monotonic Remapping for Semi-Lagrangian Transport Algorithms
Publisher: American Meteorological Society
Abstract: A conservative and monotonic remapping algorithm is developed, which could be used as a component of a semi-Lagrangian transport scheme for numerical models of the atmosphere. The algorithm is a version of the monotonic ...
Fourth-Order Horizontal Advection Schemes on the Semi-staggered Grid
Publisher: American Meteorological Society
Abstract: Horizontal advection schemes on the semi-staggered grid E are presented, which in their linearized versions have a fourth-order space accuracy. The first is a scheme for evaluation of the horizontal nonlinear terms in the ...
Semi-Lagrangian Piecewise Biparabolic Scheme for Two-Dimensional Horizontal Advection of a Passive Scalar
Publisher: American Meteorological Society
Abstract: A conservative semi-Lagrangian algorithm with a snall computational diffusion is presented that may be applied to advection of passive scalars in numerical models of the atmosphere. The technique is preferable for the ...
Prediction of Transpired Turbulent Boundary Layers With Arbitrary Pressure Gradients
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: An integral method, using Coles combined inner and outer law as the velocity profile, is developed for calculation of turbulent boundary layers with blowing or suction and pressure gradients. ...
Noninterpolating Semi-Lagrangian Advection Scheme with Minimized Dissipation and Dispersion Errors
Publisher: American Meteorological Society
Abstract: A simple noninterpolating semi-Lagrangian advection algorithm is presented, which uses a two-time-level scheme with minimized dissipation and dispersion errors in the Eulerian step. Advection experiments with uniform Bow ...
2D Modeling of Flow and Sediment Interaction: Sediment Mixtures
Publisher: American Society of Civil Engineers
Abstract: The further development and application of the two-dimensional (2D) flow and sediment-modeling concept, formulated for the treatment of sediment mixtures, is addressed herein. The sediment domain is divided into subdomains ...
Nonlinear Advection Schemes on the Octagonal Grid
Publisher: American Meteorological Society
Abstract: Successful treatment of nonlinear momentum advection is one of the outstanding challenges for the application of rectangular quasi-uniform spherical grids in global circulation models. Quasi-uniform grids (e.g., cubic and ...
2‐D Bed Evolution in Natural Watercourses—New Simulation Approach
Publisher: American Society of Civil Engineers
Abstract: A new mathematical formulation is established for two‐dimensional (plan view) unsteady water flow, sediment transport, and bed evolution in natural watercourses such as reservoirs, estuaries, and coastal waters, where depth ...
Optimization of Switchgrass Combustion for Simultaneous Production of Energy and Pozzolan
Publisher: American Society of Civil Engineers
Abstract: Combustion of switchgrass, a low-carbon fuel, generates energy and ash that can be recycled as a pozzolan in cement. This study aimed to optimize switchgrass combustion to achieve high-energy conversion and ash recycling ...