scholarly journals The Effect of Vertex Reordering on 2D Local Mesh Optimization Efficiency

2008 ◽  
pp. 107-124 ◽  
Author(s):  
Suzanne M. Shontz ◽  
Patrick Knupp
Keyword(s):  
Mesh Optimization ◽  
Optimization Efficiency

scholarly journals Enhancing finite difference approximations for double barrier options: mesh optimization and repeated Richardson extrapolation

2021 ◽  
Author(s):  
Luca Vincenzo Ballestra
Keyword(s):  
Finite Difference ◽  
Optimization Procedure ◽  
Richardson Extrapolation ◽  
Mesh Optimization ◽  
Option Prices ◽  
Barrier Option ◽  
Double Barrier ◽  
Finite Difference Approximations ◽  
Barrier Option Pricing ◽  
Richardson Extrapolation Technique

AbstractWe show that the performances of the finite difference method for double barrier option pricing can be strongly enhanced by applying both a repeated Richardson extrapolation technique and a mesh optimization procedure. In particular, first we construct a space mesh that is uniform and aligned with the discontinuity points of the solution being sought. This is accomplished by means of a suitable transformation of coordinates, which involves some parameters that are implicitly defined and whose existence and uniqueness is theoretically established. Then, a finite difference scheme employing repeated Richardson extrapolation in both space and time is developed. The overall approach exhibits high efficacy: barrier option prices can be computed with accuracy close to the machine precision in less than one second. The numerical simulations also reveal that the improvement over existing methods is due to the combination of the mesh optimization and the repeated Richardson extrapolation.

Research on Mesh Optimization of the Finite Element Calculation about Three-Dimensional Foundation Pit

2012 ◽  
Vol 487 ◽  
pp. 855-859
Author(s):  
Shi Lun Feng ◽  
Yu Ming Zhou ◽  
Pu Lin Li ◽  
Jun Li ◽  
Zhi Yong Li ◽  
...  
Keyword(s):  
Finite Element ◽  
Complex Geometry ◽  
Three Dimensional ◽  
Mesh Optimization ◽  
Design Calculation ◽  
Foundation Pit ◽  
3D Design ◽  
Finite Element Software ◽  
Core Language ◽  
Grid Division

Abaqus finite element software can implement three-dimensional excavation design calculation, so authors used Python of Abaqus core language made the 3D design of foundation pit supporting program come ture and also did intensive study of mesh optimization during the process. Authors also did intensive comparison and analysis about grid division of the complex geometry foundation pit, through a regularization partion about a variety of special-shaped pit, we made the automatic division about the structural grid of all kinds of shapes foundation pit successful. On this basis, we achieved better calculation effects of the model. The article will introduce problems about optimization of grid in procedure.

Dynamic Scheduling Model of Rail-Guided Vehicle (RGV) Based on Genetic Algorithms in the Context of Mobile Computing

2021 ◽  
Vol 12 (1) ◽  
pp. 43-62
Author(s):  
Chen Xu ◽  
Xueyan Xiong ◽  
Qianyi Du ◽  
Shudong Liu ◽  
Yipeng Li ◽  
...  
Keyword(s):  
Information System ◽  
Mobile Computing ◽  
Dynamic Scheduling ◽  
Distributed Processing ◽  
Processing System ◽  
Time Dynamic ◽  
Scheduling Model ◽  
Practical Operation ◽  
Optimization Efficiency ◽  
Production And Operation

Track guidance vehicle (RGV) is widely used in logistics warehousing and intelligent workshop, and its scheduling effectiveness will directly affect the production and operation efficiency of enterprises. In practical operation, central information system often lacks flexibility and timeliness. By contrast, mobile computing can balance the central information system and the distributed processing system, so that useful, accurate, and timely information can be provided to RGV. In order to optimize the RGV scheduling problem in uncertain environment, a genetic algorithm scheduling rule (GAM) using greedy algorithm as the genetic screening criterion is proposed in this paper. In the experiment, RGV scheduling of two-step processing in an intelligent workshop is selected as the research object. The experimental results show that the GAM model can carry out real-time dynamic programming, and the optimization efficiency is remarkable before a certain threshold.

Mesh Optimization for Discontinuous Galerkin Methods Using a Continuous Mesh Model

AIAA Journal ◽  
2018 ◽  
Vol 56 (10) ◽  
pp. 4060-4073 ◽  
Author(s):  
Ajay Rangarajan ◽  
Aravind Balan ◽  
Georg May
Keyword(s):  
Discontinuous Galerkin ◽  
Discontinuous Galerkin Methods ◽  
Mesh Optimization ◽  
Galerkin Methods ◽  
Mesh Model

scholarly journals From 1 Sun to 10 Suns c-Si Cells by Optimizing Metal Grid, Metal Resistance, and Junction Depth

2009 ◽  
Vol 2009 ◽  
pp. 1-11 ◽  
Author(s):  
Vikrant A. Chaudhari ◽  
Chetan S. Solanki
Keyword(s):  
Solar Cell ◽  
Power Loss ◽  
Series Resistance ◽  
Metal Resistance ◽  
Efficiency Gain ◽  
Metal Contacts ◽  
Junction Depth ◽  
Metal Grid ◽  
Grid Optimization ◽  
Optimization Efficiency

Use of a solar cell in concentrator PV technology requires reduction in its series resistance in order to minimize the resistive power losses. The present paper discusses a methodology of reducing the series resistance of a commercial c-Si solar cell for concentrator applications, in the range of 2 to 10 suns. Step by step optimization of commercial cell in terms of grid geometry, junction depth, and electroplating of the front metal contacts is proposed. A model of resistance network of solar cell is developed and used for the optimization. Efficiency of unoptimized commercial cell at 10 suns drops by 30% of its 1 sun value corresponding to resistive power loss of about 42%. The optimized cell with grid optimization, junction optimization, electroplating, and junction optimized with electroplated contacts cell gives resistive power loss of 20%, 16%, 11%, and 8%, respectively. An efficiency gain of 3% at 10 suns for fully optimized cell is estimated.

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