Results 91 to 100 of about 5,501 (303)

A numerical scheme based on local integrated RBFNs and Cartesian grids for solving second-order elliptic problems in two dimensions [PDF]

, 2010
This paper reports a new Cartesian-grid computational technique, based on local integrated radial-basis-function networks (IRBFNs), for the solution of second-order elliptic differential problems defined on two-dimensional regular and irregular domains ...
Mai-Duy, N., Tran-Cong, T.
core  

Coupling Fluid Neutrals to Gyrokinetic Plasma Dynamics for Edge and SOL Turbulence Simulations

Contributions to Plasma Physics, EarlyView.
ABSTRACT Accurate modeling of turbulent transport in magnetic confinement fusion devices requires extending first‐principles gyrokinetic simulations from the core to the edge and scrape‐off layer (SOL), where additional physics—particularly plasma–neutrals interactions—must be included.
Sabine Ogier‐Collin, Philipp Ulbl, Wladimir Zholobenko, Frank Jenko   +3 more
wiley   +1 more source

Efficient and accurate machine learning models for volume of fluid (VOF) simulation on uniform Cartesian mesh

Engineering Applications of Computational Fluid Mechanics
In this paper, we describe a machine learning (ML) approach for estimating interface orientation in multiphase flow using the volume of fluid (VOF) method on a uniform Cartesian mesh.
Mostafa A. Rushdi, Shigeo Yoshida, Changhong Hu, Tarek N. Dief, Abdulrahman E. Salem, Mohamed M. Kamra   +5 more
doaj   +1 more source

Unsteady Flow Behavior and Radial Force Analysis of a Side Channel Pump Under Different Blade Tip Cutting Angles Using Computational Fluid Dynamics

Energy Science &Engineering, EarlyView.
The Radial Force (RF) distribution under different cutting angles is presented in Figure 1. Generally, the distribution of RF displays divergence across different flow conditions. The pattern of force distribution reveals a total of 24 peaks, which corresponds to the number of blades of the impeller of the SCP.
Kofi Asamoah Adu‐Poku, Desmond Appiah, Fan Zhang, Chen Ke   +3 more
wiley   +1 more source

Hybrid solvers for reactor modelling: matrix-based and matrix-free approaches on voxel-dominated meshes

Frontiers in Nuclear Engineering
Simulating neutronics and thermal hydraulics within nuclear reactor cores is computationally intensive, not only because of the complexity of the governing equations but also because of the intricate geometries involved.
Liang Yang, Liang Yang, Jianhui Yang, Jakov Popov, Andrew G. Buchan   +4 more
doaj   +1 more source

Forced Draught Impact on Externally Venting Flames: An Experimental and Numerical Investigation

Fire and Materials, EarlyView.
ABSTRACT Wind can significantly influence fire development and spread in urban and forest environments causing fatal consequences for the public, the first responders, and the environment. Wind‐driven fires can have a significant impact on structural fires as wind can increase the fire's intensity, development, and flame spread.
Anoop Subramania Warrier, Jan Smolka, Kamila Kempna, Meet Panchal, Tony Graham, Eleni Asimakopoulou   +5 more
wiley   +1 more source

MULTIPLE STATIONARY AND MOVING BOUNDARY HANDLING IN CARTESIAN GRIDS

, 2008
A Cartesian grid generation methodology is developed for unsteady control volume computational fluid dynamic (CFD) solvers. Arbitrary combinations and numbers of moving and stationary boundaries are allowed to exist in the two-dimensional Cartesian grid ...
Kerem Pekkan
core  

Efficient asymptotic preserving schemes for BGK and ES-BGK models on cartesian grids [PDF]

, 2015
This work is devoted to the study of complex flows where hydrodynamic and rarefied regimes coexist. This kind of flows are found in vacuum pumps or hypersonic re-entries of space vehicles where the distance between gas molecules is so large that their ...
Iollo, Angelo, Puppo, G., Bernard, Florian   +2 more
core   +1 more source

Monolithic Framework to Simulate Fluid‐Structure Interaction Problems Using Geometric Volume‐of‐Fluid Method

International Journal for Numerical Methods in Fluids, EarlyView.
A three‐dimensional fluid‐structure interaction (FSI) framework is developed using the geometric volume‐of‐fluid (VOF) interface capturing method and applied to assess largescale turbulent FSI interactions. The monolithic FSI framework is extensively validated, and despite the discontinuities across the interface, the FSI framework delivers stable and ...
Soham Prajapati, Ali Fakhreddine, Krishnan Mahesh   +2 more
wiley   +1 more source

Cartesian-Like Grids Using a Novel Grid-Stitching Algorithm for Viscous Flow Computations

, 2007
A novel grid-stitching algorithm has been developed for generating Cartesian-like grids for viscous flow calculations. A grid is generated by recursive division of Cartesian cells.
Munikrishna, N, Balakrishnan, N, Mondal, Partha   +2 more
core   +1 more source