A standard P2 2-D Discontinuous-Galerkin-Method program written by Fortran. This program includes:
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Rectangular grid
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P^2 Basis：{1, phi_1(X), phi_1(Y), phi_2(X), phi_1(X)*phi_1(Y), phi_2(Y)}. Where phi_0 = 1, phi_1 = X, phi_2 = X^2 - 1/3， X = (x - x_i)/(Delta x/2)
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Initial value determined by L^2 projection
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Three Fluxes: L-F, HLL and HLLC
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One step Euler forward and RK3 time iteration modes
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The TVB-Limiter (component wise)
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Examples: Smooth Vortex, Orszag Tang Vortex, Rotor
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L^2 error calculation
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Save and draw the numerical solution(MATLAB)
You can modify the text 'com.txt' and the subroutine 'init_data.f90' to change above parameters.