An efficient solution technique for coupled simulating reactive transport in heterogeneous aquifers using mixed random walk/finite element method

Author(s):  
A Messameh
2018 ◽  
Vol 63 (3) ◽  
pp. 455-470 ◽  
Author(s):  
Rui Zhang ◽  
Lihua Wen ◽  
Jinyou Xiao ◽  
Dong Qian

2008 ◽  
Vol 2008 ◽  
pp. 1-9 ◽  
Author(s):  
Mehmet Tarık Atay ◽  
Safa Bozkurt Coşkun

Variational iteration method is applied to examine the temperature distribution within a single fin with a one-dimensional steady-state nonlinear heat conduction equation. Variation of temperature due to different levels of nonlinearities is analyzed. The results obtained by means of variational iteration method are compared with the results obtained from finite element method. A fourth iteration variational iteration solution is used in all cases considered. An error analysis is also conducted to evaluate the performance of proposed solution technique. The results have shown that variational iteration method is a powerful solution technique in the analysis of power-law fin-type problems.


Author(s):  
Nor Azizah Mohd Yusoff ◽  
Kasrul Abdul Karim ◽  
Sharin Ab Ghani ◽  
Tole Sutikno ◽  
Auzani Jidin

In the year of 1970 saw the starting invention of the five-phase motor as the milestone in advanced electric motor. Through the years, there are many researchers, which passionately worked towards developing for multiphase drive system. They developed a static transformation system to obtain a multiphase supply from the available three-phase supply. This idea gives an influence for further development in electric machines as an example; an efficient solution for bulk power transfer. This paper highlighted the detail descriptions that lead to five-phase supply with fixed voltage and frequency by using Finite-Element Method (FEM). Identifying of specification on a real transformer had been done before applied into software modeling. Therefore, Finite-Element Method provides clearly understandable in terms of visualize the geometry modeling, connection scheme and output waveform.


1970 ◽  
Vol 42 (1) ◽  
pp. 177-191 ◽  
Author(s):  
T. Taz Bramlette ◽  
Robert H. Mallett

A new method is presented for solution of the Boltzmann equation governing the dynamic behaviour of gases. The essence of the method is idealization of the problem domain into subdomains called finite elements. Then, the Galerkin assumed-mode technique is employed as the basis for discretization of the individual finite elements and also for the assembly of the resulting algebraic models for these finite elements to form an algebraic model for the complete problem. The procedure is cast in a systematic matrix notation that makes evident the broad application potential of the analysis method. An illustrative application is presented for the problem of one-dimensional, linearized Couette flow. Numerical predictions of macroscopic flow velocity and viscous shear stress based upon the subject finite element method are compared with alternative analytical and numerical results. Special attributes of the finite element method are discussed in the context of this example problem. Applications to practical problems governed by generalized forms of the Boltzmann equation are projected on the basis of concepts established herein.


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