Finite element method for calculating spectral and optical characteristics of axially symmetric quantum dots

2018 ◽  
Author(s):  
Vladimir L. Derbov ◽  
Alexander A. Gusev ◽  
Ochbadrakh Chuluunbaatar ◽  
Sergue I. Vinitsky ◽  
L L. Hai ◽  
...  
Keyword(s):  
Finite Element Method ◽  
Quantum Dots ◽  
Finite Element ◽  
Optical Characteristics ◽  
Axially Symmetric ◽  
Symmetric Quantum ◽  
Element Method

DIRECT CURRENT RESISTIVITY MODELING FOR AXIALLY SYMMETRIC BODIES USING THE FINITE ELEMENT METHOD

Geophysics ◽  
1978 ◽  
Vol 43 (3) ◽  
pp. 550-562 ◽  
Author(s):  
H. M. Bibby
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Apparent Resistivity ◽  
Vertical Axis ◽  
Geothermal Field ◽  
Axially Symmetric ◽  
The Finite Element Method ◽  
Cross Sectional ◽  
Resistivity Anisotropy ◽  
Element Method

The finite element method is used to determine numerically the apparent resistivity anomaly caused by the presence of any body with a vertical axis of symmetry embedded in a uniform half‐space. The potential for a point source of current, and hence the apparent resistivity, is determined in the form of a Fourier series. The use of the finite element method enables certain classes of resistivity anisotropy to be modeled. Several examples of bipole‐dipole apparent resistivity enable us to examine assumptions that are necessarily made when inhomogeneities are approximated by models for which explicit solutions exist for the potential. An application to the Broadlands geothermal field suggests that the horizontal cross‐sectional area of the geothermal reservoir increases with depth, consistent with a decrease in the permeability with depth.

scholarly journals Analysis of strain energy and relaxation degree in different-shaped quantum dots using finite element method

2009 ◽  
Vol 58 (8) ◽  
pp. 5618
Author(s):  
Wang Tian-Qi ◽  
Yu Zhong-Yuan ◽  
Liu Yu-Min ◽  
Lu Peng-Fei
Keyword(s):  
Finite Element Method ◽  
Quantum Dots ◽  
Finite Element ◽  
Strain Energy ◽  
Element Method

Application of Particle Finite Element Method in Axially Symmetric Fluid-Structure Interaction Problems

2013 ◽  
Vol 423-426 ◽  
pp. 1737-1740
Author(s):  
Yong Feng Gao ◽  
Xiang Yan Zhang ◽  
Ning Liu
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Present Method ◽  
Fluid Structure Interaction ◽  
Axially Symmetric ◽  
Particle Finite Element Method ◽  
Free Surfaces ◽  
Fluid Structure ◽  
Structure Interaction ◽  
Element Method

A method for the analysis of the axially symmetric fluid-structure interaction (FSI) problems which has free surfaces, based on the particle finite element method (PFEM), is proposed. To solve the incompressible axially symmetric N-S equations, a stabilized formulation based on the finite calculus procedure is used in the fractional step method. The FSI problem is performed with a staggered scheme. And a flexible boundary is used between the fixed boundary and the moving boundary so as to replace the friction. The reliability of the present method is demonstrated by the comparisons of the results from the classical method and the present results for the recoil absorber simulation. The present method can improve the efficiency and veracity in the design of machines which have free surfaces.

scholarly journals ASPECT RATIO FACTOR FOR FINITE ELEMENT METHOD ANALYSIS OF AXIALLY SYMMETRIC CYLINDRICAL SHELL WALLS

2015 ◽  
Vol 6 (4) ◽  
pp. 169-177
Author(s):  
Gebrail Bekdaş ◽  
Namık Kemal Öztorun
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Cylindrical Shell ◽  
Aspect Ratio ◽  
Fem Analysis ◽  
Superposition Method ◽  
Axially Symmetric ◽  
Beams On Elastic Foundation ◽  
Method Analysis ◽  
Element Method

Finite Element Method (FEM) is one of the most commonly used numerical analysis method for the structural analysis. The axially symmetric cylindrical shell walls analysis can be made by using FEM or similarity of beams on elastic foundation. The Superposition Method (SPM) is a method developed for the analysis of beams and can be employed in the analysis of cylindrical shell walls. In the analyses using FEM, there are some assumptions and boundaries for preparing mathematical models. One of these boundaries for shell walls is aspect ratio. In this study, it is investigated, the aspect ratio factor for FEM analysis of axially symmetric cylindrical shell walls. For that reason the FEM analysis results are compared with the Superposition Method (SPM). In order to obtain exact solution of cylindrical shell walls, the effects of loadings is calculated and defined to the computer program, which is developed for SPM analysis by using Visual Basic programming language. According to analysis results, aspect ratio has a significantly effect on analysis results. Also, it is occurred minor difference in the FEM analysis results even if in case of obeying the rules.

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