APPLICATION OF NUMERICAL FINITE ELEMENT MODEL FOR TRANSIENT UNSATURATED MASS TRANSPORT

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ZARE ABYANEH HAMID; NAZEMI A.H.; NEYSHABOURI M.R.; MOHAMMADI K.; MAJZOUBI GH.H.; SHARIFI HAMEDANI B.

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Journal: AGRICULTURAL RESEARCH Year:2005 | Volume:5 | Issue:2 Page(s): 41-52

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Title

APPLICATION OF NUMERICAL FINITE ELEMENT MODEL FOR TRANSIENT UNSATURATED MASS TRANSPORT

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Keywords

MASS TRANSPORT NUMERICAL MODELQ4

TRANSIENT UNSATURATED FLOWQ4

FINITE ELEMENTQ4

GALERKIN METHODQ4

Abstract

Transient nonlinear Richard’s and mass transport equations evaluated with Galerkin FINITE ELEMENT and a computer model was developed based on the mathematical model. Initially, our numerical model was controlled using Panoch clay loam results of Antonopoulos and Papazafiriou. Then, using the experimental soil moisture characteristic data and RETC software the coefficients of empirical Van Genuchten equation were determined. Again, the model was run under equation Van Genuchten, and the results were compared to Antonopoulos and Papazafiriou results. Finally, the distributions of moisture content and concentration profiles were determined under initial condition and Drichlete boundary condition for the upper boundary of model. Results obtained by spatial resolution of 2.5cm and time interval of 1s are in a good agreement with each other. Therefore replacement of Van Genuchten equation in the Antonopoulos and Papazafiriou model not only does not reduce the accuracy but also makes it simpler. Also using the convergence of h-type for 1 second of time step and grid size of 0.5, 1, 1.25, 2.5, 5, 12.5 and 25cm was verified. For the spatial interval of 2.5 cm, the suggested CPU time is about 27.02 seconds. Therefore, both the results obtained by Antonopoulos and Papazafiriou can be applied.

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APA: Copy

ZARE ABYANEH, HAMID, NAZEMI, A.H., NEYSHABOURI, M.R., MOHAMMADI, K., MAJZOUBI, GH.H., & SHARIFI HAMEDANI, B.. (2005). APPLICATION OF NUMERICAL FINITE ELEMENT MODEL FOR TRANSIENT UNSATURATED MASS TRANSPORT. AGRICULTURAL RESEARCH, 5(2), 41-52. SID. https://sid.ir/paper/84666/en

Vancouver: Copy

ZARE ABYANEH HAMID, NAZEMI A.H., NEYSHABOURI M.R., MOHAMMADI K., MAJZOUBI GH.H., SHARIFI HAMEDANI B.. APPLICATION OF NUMERICAL FINITE ELEMENT MODEL FOR TRANSIENT UNSATURATED MASS TRANSPORT. AGRICULTURAL RESEARCH[Internet]. 2005;5(2):41-52. Available from: https://sid.ir/paper/84666/en

IEEE: Copy

HAMID ZARE ABYANEH, A.H. NAZEMI, M.R. NEYSHABOURI, K. MOHAMMADI, GH.H. MAJZOUBI, and B. SHARIFI HAMEDANI, “APPLICATION OF NUMERICAL FINITE ELEMENT MODEL FOR TRANSIENT UNSATURATED MASS TRANSPORT,” AGRICULTURAL RESEARCH, vol. 5, no. 2, pp. 41–52, 2005, [Online]. Available: https://sid.ir/paper/84666/en

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