搜索结果: 16-30 共查到“知识库 工学 Mesh”相关记录139条 . 查询时间(0.034 秒)
3D OCTREE BASED WATERTIGHT MESH GENERATION FROM UBIQUITOUS DATA
Surface reconstruction Octree Graph-cut Lidar
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2015/9/21
Despite of the popularity of Delauney structure for mesh generation, octree based approaches remain an interesting solution for a first step surface reconstruction. In this paper, we propose a generic...
3D BUILDING FACADE RECONSTRUCTION UNDER MESH FORM FROM MULTIPLE WIDE ANGLE VIEWS
Surface Reconstruction Digital Facade Models Global Optimization Multi-Image Matching
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2015/8/7
The
central idea is to create a 3D point cloud. After comparison between object-space and image-space techniques, we choose the latter and
compute the depths of the pixels in each image using a corr...
Combined Feature-Driven Richardson-Based Adaptive Mesh Refinement for Unsteady Vortical Flows
Combined Feature-Driven Richardson-Based Adaptive Mesh Unsteady Vortical Flows
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2015/7/3
An adaptive mesh refinement strategy that couples feature detection with local error estimation is presented. The strategyfirst selects vortical regions for refinement using feature ...
A CONSERVATIVE MESH-FREE SCHEME AND GENERALIZED FRAMEWORK FOR CONSERVATION LAWS
conservation law advection equation mesh-free scheme fi nite diff erence fi nite volume
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2015/7/3
We present a novel mesh-free scheme for solving partial differential equations. We first derive a conservative and stable formulation of mesh-free first derivatives. We then show tha...
Further Studies of Mesh Refinement: Are Shock-Free Airfoils Truly Shock Free?
Mesh Refi nement Are Shock-Free Airfoils Truly Shock Free
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2015/7/3
The Garabedian-Korn airfoil is studied at its inviscid design condition and in the neighborhood thereof. This airfoil was designed with a hodograph method to be shock-free at M = 0.750 and Cl = 0.629....
Continuous Adjoint Approach for Adaptive Mesh Refinement
Continuous Adjoint Approach Adaptive Mesh Refi nement
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2015/7/3
At present, all output-based mesh adaptation methods in the existing literature have adopted the discrete adjoint approach which, depending on the structure of the code,could be very complex to implem...
3D Flapping Wing Simulation with High Order Spectral Difference Method on Deformable Mesh
3D Flapping Simulation Spectral Diff erence Method Deformable Mesh
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2015/7/3
In this paper we carry out computational studies of three-dimensional flow over flapping wings. The problems we have investigated include, firstly, three-dimensonal simulation of ...
Automated Off-Body Cartesian Mesh Adaption for Rotorcraft Simulations
Automated Off -Body Cartesian Mesh Adaption Rotorcraft Simulations
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2015/7/3
A new adaptive mesh refinement strategy is presented that couples feature-detection with local error-estimation. The goal is to guide refinement to key vortical features using feature dete...
Dynamic Mesh Deformation for Adaptive Grid Refinement with Staggered Spectral Difference and Finite Volume Mesh
Dynamic Mesh Deformation Adaptive Grid Staggered Spectral Diff Finite Volume Mesh
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2015/7/3
Better computational efficiency and reduced computational cost for high order CFD method are areas of active research. In this study, we investigate the potential of using dynamic deforming mesh ...
FLOW INDUCED CYLINDER OSCILLATION AND ITS CONTROL WITH HIGH ORDER SPECTRAL DIFFERENCE METHOD ON DEFORMABLE MESH
SPECTRAL DIFFERENCE METHOD DEFORMABLE MESH
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2015/7/3
In the recent work by the authors, high order spectral difference (SD) method has been formulated in a framework with dynamic deformable meshes, and been demonstrated to preserve the design accuracy o...
Feature-Driven Cartesian Adaptive Mesh Refinement in the Helios Code
Feature-Driven Cartesian Adaptive Mesh Refinement Helios Code
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2015/7/3
Feature-detection methods are applied to drive Cartesian-based adaptive mesh re nement for improved vortex resolution in aerodynamics ow elds. Several approaches such as the Q-criterion, the eigenvalu...
Mesh refinement and modelling errors in flow simulation
Mesh refinement modelling errors flow simulation
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2015/7/1
We present a perspective on verification and validation of CFD tools for analysis and design, identifying principal sources of error due to approximations in the physical model, numerical discretizati...
EFFICIENT 3D MODELING FOR HISTORICAL OBJECTS USING MESH OBJECTS
Photogrammetry Three-dimensional Modelling Visualization Automatic
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2015/5/25
Visualization for structures of architectural significance and objects of importance to the World’s cultural heritage has recently been receiving more attention. Generally, TIN and Marching Cube algor...
无线mesh网络中编码感知且负载均衡的组播路由
无线mesh网络 网络编码 负载均衡 组播路由
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2015/4/8
提出一种新的基于网络编码的负载均衡路由量度CRM-LB(coding-aware routing metric with load balancing)，CRM-LB在CRM(coding-aware routing metric)的基础上增加了对路径p上所有节点通信密集程度与网络拥塞程度的考虑。进一步提出了基于CRM-LB的无线mesh网络组播路由CLR(coding and load-bala...
为抑制无线Mesh网络中的信道振荡和提升网络效用,综合分析路由端和用户端信道振荡产生的因素.引入演化博弈理论,联合改进的果蝇优化算法提出基于ESS-PFOA(Evolutionary Stable Status-Promoted Fruit-Flies Optimal Algorithm)算法的分布式信道分配策略.实验分析发现当信道振荡宽容因子β≤0.5时网络呈同构特征,β>0.5时网络向异构转化...