搜索结果: 1-15 共查到“工学 multigrid”相关记录23条 . 查询时间(0.079 秒)
MULTIGRID CELL SHAPE EVALUATION IN DTM FILTERING OF MOBILE LIDAR POINT CLOUDS
Point cloud Mobile LiDAR Digital terrain models Filtering Delaunay triangulation
2018/11/9
The georeferenced information acquisition for large scales digital terrain models generation is usually a rather time-consuming and costly process. The use of point clouds gathered by mobile LiDAR sys...
A p-multigrid spectral difference method for two-dimensional unsteady incompressible Navier–Stokes equations
Spectral difference method Artifi cial compressibility method Dual time stepping p-Multigrid
2015/7/3
This paper presents the development of a 2D high-order solver with spectral difference method for unsteady incompressible Navier–Stokes equations accelerated by a p-multigrid method. This solver is de...
Multicloud: Multigrid convergence with a meshless operator
Multigrid Meshless Meshfree Gridless Gridfree Radial basis functions Convergence rate
2015/7/3
The primary objective of this work is to develop and test a new convergence acceleration technique we call multicloud. Multicloud is well-founded in the mathematical basis of multigrid, but relies on ...
Monotonicity preserving multigrid time stepping schemes for conservation laws
Monotonicity preserving multigrid stepping schemes conservation laws
2015/7/2
In this paper, we propose monotonicity preserving and total variation diminishing (TVD) mul tigrid methods for solving scalar conservation laws. We generalize the upwind-biased residual restriction an...
Fast preconditioned multigrid solution of the Euler and Navier–Stokes equations for steady, compressible
Euler equations implicit methods lower–upper schemes multigrid methods
2015/7/2
New versions of implicit algorithms are developed for the ecient solution of the Euler and Navier Stokes equations of compressible ow. The methods are based on a preconditioned, lower-upper (LU) impl...
AERODYNAMIC AND AEROELASTIC APPLICATIONS OF A PARALLEL MULTIGRID UNSTRUCTURED FLOW SOLVER
AERODYNAMIC AEROELASTIC APPLICATIONS PARALLEL MULTIGRID UNSTRUCTURED FLOW SOLVER
2015/7/2
The objective of this study is to develop a ow solver that can be used by aerody namic design environments to analyze a variety of candidate designs in a relatively short period of time. To meet this ...
A Multigrid Method for High Speed Reactive Flows
Multigrid Method High Speed Reactive Flows
2015/7/1
This paper presents a multigrid method for computing inviscid and viscous high speed steady-state hydrogen/oxygen and hydrogen/air reactive flows.
Three-dimensional unsteady incompressible flow computations using multigrid
Three-dimensional unsteady incompressible flow computations multigrid
2015/7/1
We apply a robust and computationally efficient multigrid-driven algorithm for the simulation of time-dependent three-dimensional incompressible bluff body wakes at low Reynolds numbers (Re less than ...
Three-Dimensional Computations of Time-Dependent Incompressible Flows with an Implicit Multigrid-Driven Algorithm on Parallel Computers
Three-Dimensional Computations Time-Dependent Incompressible Flows Implicit Multigrid-Driven Algorithm Parallel Computers
2015/7/1
The present work is aimed at the development of a robust, computationally efficient algorithm for the simulation of unsteady incompressible flows of interest in engineering. In particular, we focus on...
Analysis and Design of Numerical Schemes for Gas Dynamics 1 Artificial Diffusion, Upwind Biasing, Limiters and Their Effect on Accuracy and Multigrid Convergence
Design of Numerical Schemes Gas Dynamics usion Upwind Biasing Limiters Accuracy Multigrid Convergence
2015/7/1
The theory of non-oscillatory scalar schemes is developed in this paper in terms of the local extremum diminishing (LED) principle that maxima should not increase and minima should not decrease. This ...
EFFECT OF ARTIFICIAL DIFFUSION SCHEMES ON MULTIGRID CONVERGENCE
EFFECT ARTIFICIAL DIFFUSION SCHEMES MULTIGRID CONVERGENCE
2015/7/1
The effect of artificial diffusion schemes on the convergence of an implicit method is investi-gated. A multigrid code using a symmetric lim-ited positive scheme in conjunction with a lower-upper symm...
A Two-Dimensional Multigrid-Driven Navier-Stokes Solver for Multiprocessor Architectures
Two-Dimensional Multigrid-Driven Navier-Stokes Solver Multiprocessor Architectures
2015/7/1
A two-dimensional unsteady Navier-Stokes solver has been parallelized using a domain decomposition approach and the PVM message passing library. Several options for the treatment of multigrid and impl...
A New Implicit Algorithm with Multigrid for Unsteady Incompressible Flow Calculations
New Implicit Algorithm Multigrid Unsteady Incompressible Flow Calculations
2015/7/1
We present a new fully-implicit algorithm for unsteady incompressible flow calculations for both the Euler and Navier-Stokes equations. The new method couples the artificial compressibility ap-proach ...
Euler Multigrid Calculations Using a Gas-Kinetic Scheme
Euler Multigrid Calculations Gas-Kinetic Scheme
2015/7/1
St,arting from the BGI< model [I], anew gas-kinetic scheme is developed for computing st,ea.tly st,at,e so-lutions to the Eiiler eqitations. T11c discret.iaat,ioii has been implemented in a well devol...
Multigrid Unsteady Navier-Stokes Calculations with Aeroelastic Applications
Multigrid Unsteady Navier-Stokes Calculations Aeroelastic Applications
2015/7/1
An implicit approach to the solution of the unsteady two-dimensional Navier-Stokes equations is presented. After spatial discretization, the resulting set of coupled implicit non-linear equations is s...