Search
Now showing items 1-10 of 22
Numerical Study of the Flow over Broad-Crested Weirs by a Mesh-Free Method
Publisher: American Society of Civil Engineers
Abstract: The mesh-free method, moving particle semi-implicit method (MPS), has become a useful numerical tool in simulating free-surface flows. Broad-crested weirs are considered as a common hydraulic structure and have been ...
Improved Multiphase Lagrangian Method for Simulating Sediment Transport in Dam-Break Flows
Publisher: American Society of Civil Engineers
Abstract: In this study, sediment transport is considered as a typical multiphase flow in numerical simulation using a particle-based method and efforts are focused on reducing interface instability between phases. A new multiphase ...
Multilayer Depth-Averaged Flow Model with Implicit Interfaces
Publisher: American Society of Civil Engineers
Abstract: Using a depth-averaged model to obtain the velocity and pressure distributions in the vertical direction is difficult. A multilayer model is an option that can be used to improve on the depth-averaged model. However, the ...
Multilayer Averaged and Moment Equations for One-Dimensional Open-Channel Flows
Publisher: American Society of Civil Engineers
Abstract: A model is developed to account for the vertical distribution of velocity and nonhydrostatic pressure in one-dimensional open-channel flows. The model is based on both classical multilayer models and depth-averaged and ...
MPS-Based Mesh-Free Particle Method for Modeling Open-Channel Flows
Publisher: American Society of Civil Engineers
Abstract: Dealing with large deformation and fragmentation of geometries and interfaces (e.g., free surfaces), the regular mesh-based Eulerian methods, such as finite-element and finite-difference methods, have difficulties in ...
Simulating Velocity Distribution of Dam Breaks with the Particle Method
Publisher: American Society of Civil Engineers
Abstract: This paper provides a quantitative comparison of a benchmarking dam-break case simulated by a particle method. The velocity comparison is usually absent in particle-method simulation, but both the water surface and velocity ...
Improved Multiphase Lagrangian Method for Simulating Sediment Transport in Dam-Break Flows
Publisher: American Society of Civil Engineers
Abstract: In this study, sediment transport is considered as a typical multiphase flow in numerical simulation using a particle-based method and efforts are focused on reducing interface instability between phases. A new multiphase ...
Numerical Modeling of Type I Circular Sedimentation Tank
Publisher: American Society of Civil Engineers
Abstract: A numerical model for Type I circular sedimentation tanks (center feed) has been developed to provide useful information for circular tank operation. The unsteady flow process in circular sedimentation tanks is divided by ...
Boundary Shear in Rectangular Ducts and Channels
Publisher: American Society of Civil Engineers
Abstract: The development of the equation for the lateral distribution of boundary shear starts from a simplified streamwise vorticity equation which includes only the secondary Reynolds stress terms. Transverse anisotropy is modeled ...
Simplified Model for the Class-I Settling Tanks Design
Publisher: American Society of Civil Engineers
Abstract: The purpose of this paper is to simplify the original one-dimensional mathematical model that is used to simulate the performance of nonuniform particle sizes in Class-I settling tanks. This paper shows that the modified ...