Parallel large-eddy simulation of scour around an abutment in a channel with a floodplain: A Stanford-Singapore Partnership proposal
نویسندگان
چکیده
This project aims to synthesize laboratory-scale studies with a parallel large-eddy simulation sediment transport solver to gain a fundamental understanding of the mechanisms that govern clear-water scour around an abutment in a channel with a floodplain. In particular, we hope to answer how the interaction of the main channel flow with the floodplain affects the equilibrium scour depth. The study will involve implementation of existing sediment transport models and numerical techniques into a parallel Navier-Stokes solver in order to obtain high-resolution computations of the velocity, sediment, and shear stress distributions around different abutment and channel configurations and compare the results to laboratoryscale data. The project will involve one Ph.D. student from NTU who will spend half of the project time working with the simulation code at Stanford University under Professor Fringer, who specializes in parallel computations, and the rest of the time performing production runs and analyzing and verifying simulation data at NTU under Professor Lim, who specializes in laboratory-scale scouring experiments.
منابع مشابه
Mixed Large-Eddy Simulation Model for Turbulent Flows across Tube Bundles Using Parallel Coupled Multiblock NS Solver
In this study, turbulent flow around a tube bundle in non-orthogonal grid is simulated using the Large Eddy Simulation (LES) technique and parallelization of fully coupled Navier – Stokes (NS) equations. To model the small eddies, the Smagorinsky and a mixed model was used. This model represents the effect of dissipation and the grid-scale and subgrid-scale interactions. The fully coupled NS eq...
متن کاملMixed Large-Eddy Simulation Model for Turbulent Flows across Tube Bundles Using Parallel Coupled Multiblock NS Solver
In this study, turbulent flow around a tube bundle in non-orthogonal grid is simulated using the Large Eddy Simulation (LES) technique and parallelization of fully coupled Navier – Stokes (NS) equations. To model the small eddies, the Smagorinsky and a mixed model was used. This model represents the effect of dissipation and the grid-scale and subgrid-scale interactions. The fully coupled NS eq...
متن کاملThe effect of the geometry of the scour around bridge abutments in the river bend
Every year a large number of bridges flooding in the river just when they most need them there destroy all born. Carried out. In this study, the four fulcrum forms a semi-circular, trapezoidal, rectangular edges rounded rectangle 90 degrees at 70 degrees in Sagittarius with four different discharges depth of constant scouring around the abutment in pure water were examined. For material of flum...
متن کاملLocal scour around rectangular abutment and their countermeasures by using sacrificial piles
One of the important issues in hydraulic engineering is inspection of local scour depth around bridge pier. Using piles is one of the ways for confronting local scour and erosion. In this study, the experiments were conducted in an 8m long, 0.5m deep and 0.25m wide flume. And the effectof using piles and number of them observed on the amount of scour in three different Frude numbers. The shape ...
متن کاملPractical Approach to Estimating Realistic Depths of Abutment Scour
Observations of bridge abutment scour lead to a practical new approach for estimating realistic scour IIHR-Hydroscience and Engineering depths at bridge abutments. Prior design approaches usually led to unrealistically deep estimates of abutment scour depth. The observations presented stem from flume experiments conducted with abutments with approach embankments subject to a range of erodibilit...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2004