Hydrodynamics of Turbid Underflows. I: Formulation and Numerical Analysis

@article{bradford:1006, abstract = {A mathematical model is developed for unsteady, two-dimensional, single-layer, depth-averaged turbid underflows driven by nonuniform, noncohesive sediment. The numerical solution is obtained by a high-resolution, total variation diminishing, finite-volume numerical model, which is known to capture sharp fronts accurately. The monotone upstream scheme for conservation laws is used in conjunction with predictor-corrector time-stepping to provide a second-order accurate solution. Flux-limiting is implemented to prevent the development of spurious oscillations near discontinuities. The model also possesses the capability to track the evolution and development of an erodible bed, due to sediment entrainment and deposition. This is accomplished by solving a bed-sediment conservation equation at each time step, independent of the hydrodynamic equations, with a predictor-corrector method. The model is verified by comparison to experimental data for currents driven by uniform and nonuniform sediment.}, author = {Bradford, Scott F. and Katopodes, Nikolaos D. }, citeulike-article-id = {1906663}, journal = {Journal of Hydraulic Engineering}, keywords = {modelling, plume}, number = {10}, pages = {1006--1015}, posted-at = {2007-11-13 09:43:30}, priority = {0}, publisher = {ASCE}, title = {Hydrodynamics of Turbid Underflows. I: Formulation and Numerical Analysis}, url = {http://link.aip.org/link/?QHY/125/1006/1}, volume = {125}, year = {1999} }

TY - JOUR ID - bradford:1006 L3 - citeulike-article-id:1906663 TI - Hydrodynamics of Turbid Underflows. I: Formulation and Numerical Analysis JF - Journal of Hydraulic Engineering VL - 125 IS - 10 SP - 1006 EP - 1015 PB - ASCE N2 - A mathematical model is developed for unsteady, two-dimensional, single-layer, depth-averaged turbid underflows driven by nonuniform, noncohesive sediment. The numerical solution is obtained by a high-resolution, total variation diminishing, finite-volume numerical model, which is known to capture sharp fronts accurately. The monotone upstream scheme for conservation laws is used in conjunction with predictor-corrector time-stepping to provide a second-order accurate solution. Flux-limiting is implemented to prevent the development of spurious oscillations near discontinuities. The model also possesses the capability to track the evolution and development of an erodible bed, due to sediment entrainment and deposition. This is accomplished by solving a bed-sediment conservation equation at each time step, independent of the hydrodynamic equations, with a predictor-corrector method. The model is verified by comparison to experimental data for currents driven by uniform and nonuniform sediment. KW - modelling KW - plume AU - Bradford, Scott AU - Katopodes, Nikolaos PY - 1999/// UR - http://link.aip.org/link/?QHY/125/1006/1 ER -