scholarly journals Large Scale Joint Inversion of Geophysical Data using the Finite Element Method in escript

2013 ◽  
Vol 2013 (1) ◽  
pp. 1-4 ◽  
Author(s):  
Lutz Gross ◽  
Carina Kemp
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Large Scale ◽  
Joint Inversion ◽  
Geophysical Data ◽  
The Finite Element Method ◽  
Element Method

New Development of the P and H-P Version Finite Element Method with Quasi-Uniform Meshes for Elliptic Problems

2013 ◽  
Vol 444-445 ◽  
pp. 671-675
Author(s):  
Jian Ming Zhang ◽  
Yong He
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Automobile Industry ◽  
Large Scale ◽  
Elliptic Problems ◽  
Three Dimensions ◽  
The Finite Element Method ◽  
New Development ◽  
Engineering Problems ◽  
Element Method

In recent three decades, the finite element method (FEM) has rapidly developed as an important numerical method and used widely to solve large-scale scientific and engineering problems. In the fields of structural mechanics such as civil engineering , automobile industry and aerospace industry, the finite element method has successfully solved many engineering practical problems, and it has penetrated almost every field of today's sciences and engineering, such as material science, electricmagnetic fields, fluid dynamics, biology, etc. In this paper, we will overview and summarize the development of the p and h-p version finite element method, and introduce some recent new development and our newest research results of the p and h-p version finite element method with quasi-uniform meshes in three dimensions for elliptic problems.

Large-scale computational fluid dynamics by the finite element method

1994 ◽  
Vol 18 (11) ◽  
pp. 1083-1105 ◽  
Author(s):  
W. G. Habashi ◽  
M. Robichaud ◽  
V.-N. Nguyen ◽  
W. S. Ghaly ◽  
M. Fortin ◽  
...  
Keyword(s):  
Fluid Dynamics ◽  
Finite Element Method ◽  
Computational Fluid Dynamics ◽  
Finite Element ◽  
Large Scale ◽  
The Finite Element Method ◽  
Element Method

scholarly journals Study on the thermal stress evolution in large scale KDP crystals during the crystal extraction process

RSC Advances ◽  
2019 ◽  
Vol 9 (36) ◽  
pp. 20706-20714
Author(s):  
Pingping Huang ◽  
Shenglai Wang ◽  
Jianxu Ding ◽  
Duanliang Wang ◽  
Bo Wang ◽  
...  
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Thermal Stress ◽  
Large Scale ◽  
Extraction Process ◽  
Stress Evolution ◽  
The Finite Element Method ◽  
Kdp Crystals ◽  
Element Method

The thermal stress evolution in large-scale KDP crystals during the extraction process has been simulated by the finite element method.

The Analytical and Experimental Analyses of a Skeletal Antenna Cluster System for Space Applications

1989 ◽  
Vol 4 (4) ◽  
pp. 218-227 ◽  
Author(s):  
M. O'Neill ◽  
L. Hollaway
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Large Scale ◽  
The Finite Element Method ◽  
Large Space ◽  
Space Applications ◽  
Communications Networks ◽  
Skeletal Structures ◽  
Parametric Studies ◽  
Element Method

A new generation of large space structures (LSS), remotely deployed and stationed at geosynchronous equatorial orbit, is currently being considered for use in terrestial communications networks. These skeletal structures, which would be manufactured from high technology thermoplastics composite materials, would include multi-functional large scale platforms on which a variety of reflector assemblies would be attached. A scaled perspex model of a proposed LSS has been constructed and an experimental examination of its modal behaviour in simulated unrestrained conditions has been undertaken. These results have been used to establish the level of agreement it is possible to obtain from natural frequency extractions of the structure modelled using the finite element method. Both impact and sine dwell testing techniques have been applied in determining the modal responses of the model and it has been found that selection of the most appropriate method should be made in consideration of its anticipated modal behaviour. Very good agreement has been found between the frequency characteristics obtained experimentally analytical and frequency extractions for this model, although both methods have been hampered by the presence of the flexible arrays which have been modally active in the frequency ranges of interest. The results of this study have demonstrated that a measure of confidence can be placed on similar parametric studies on large scale unrestrained skeletal structures using the finite element method.

3D inversion of large-scale frequency-domain AEM data using unstructured local mesh

Geophysics ◽  
2021 ◽  
pp. 1-40
Author(s):  
Zhang Bo ◽  
Changchun Yin ◽  
Yunhe Liu ◽  
Xiuyan Ren ◽  
Vikas C. Baranwal ◽  
...  
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Large Scale ◽  
Jacobian Matrix ◽  
Mineral Exploration ◽  
Underground Structure ◽  
The Finite Element Method ◽  
Inversion Algorithm ◽  
3D Em ◽  
Element Method

Airborne electromagnetic (AEM) methods have been more and more widely used in mineral exploration, environmental and engineering studies, and ground water investigation. However, compared with ground-based electromagnetic (EM) methods, such as magnetotelluric or controlled-source EM, AEM methods generally produce large amount of data, which leads to very costly 3D EM inversions. We have developed a new 3D AEM inversion scheme based on the finite-element method and unstructured tetrahedral local meshes. This is different from the traditional local mesh method in that the traditional method uses regular cuboids for 3D AEM inversions, whereas our scheme uses irregular tetrahedral meshes that can easily accommodate the topography and complex underground structure. Moreover, because we create our local mesh by extracting from part of the global model mesh, the relationship between the local and global meshes is straightforward, so we can easily create a projection of the Jacobian matrix between global and local meshes and rapidly construct the global Jacobian matrix for 3D EM inversions. After formulating the boundary value problem based on the finite-element method, we verify the accuracy of our modeling algorithm by checking against the semianalytical solution for a homogeneous half-space model, and we test our inversion algorithm by running inversions on synthetic and survey data collected over Vesterålen, Norway. The numerical experiments demonstrate that our method can model the AEM responses at high accuracy and recover the subsurface main resistivity structures from synthetic and field data.

Simulation of tuning graphene plasmonic behaviors by ferroelectric domains for self-driven infrared photodetector applications

Nanoscale ◽  
2019 ◽  
Vol 11 (43) ◽  
pp. 20868-20875 ◽  
Author(s):  
Junxiong Guo ◽  
Yu Liu ◽  
Yuan Lin ◽  
Yu Tian ◽  
Jinxing Zhang ◽  
...  
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Interfacial Effect ◽  
Infrared Photodetector ◽  
The Finite Element Method ◽  
Ferroelectric Domains ◽  
Element Method

We propose a graphene plasmonic infrared photodetector tuned by ferroelectric domains and investigate the interfacial effect using the finite element method.

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