2D Unsteady convection-diffusion-reaction problem

Versione 3.1 (303 KB) da Andrea La Spina
2D scalar equation of a convection-diffusion-reaction problem
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Aggiornato 13 ott 2021

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The "UNSTEADY_CONVECTION_DIFFUSION_REACTION_2D" script solves the 2D scalar equation of a convection-diffusion-reaction problem with bilinear quadrangular elements.
The space discretization is performed by means of the standard Galerkin approach.
For the time integration the theta-method has been implemented. According to the value of theta these schemes are obtained:
0 -> Forward Euler
1/2 -> Crank-Nicolson
3/4 -> Galerkin
1 -> Backward Euler
The FEM parameters such as the number of finite elements and the number of Gauss integration points can be easily chosen.
The functions and the examples are developed according with Chapter 5 "Unsteady convection-diffusion
problems" of the book "Finite Element Methods for flow problems" of Jean Donea and Antonio Huerta.
If you like the file, please give feedbacks.

Cita come

Andrea La Spina (2025). 2D Unsteady convection-diffusion-reaction problem (https://it.mathworks.com/matlabcentral/fileexchange/60671-2d-unsteady-convection-diffusion-reaction-problem), MATLAB Central File Exchange. Recuperato .

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2D Unsteady convection-diffusion-reaction

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3.1

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2.5

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2.4

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2.3

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2.2.0.0

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2.1.0.0

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