function?[A]=afference_matrix_2D_p（n_np_xn_np_ydof_el）

%?Afference?matrix?for?pressure
n_el=（n_np_x-1）*（n_np_y-1）;
A=zeros（n_eldof_el）;
for?i=1:n_el
????[rc]=row_column（in_np_x-1）;
????A（i1）=r*n_np_x+1+（c-1）;
????A（i2）=r*n_np_x+2+（c-1）;
????A（i3）=（r-1）*n_np_x+2+（c-1）;
????A（i4）=（r-1）*n_np_x+1+（c-1）;
end

end

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????文件????????6148??2018-08-07?05:51??2D?Unsteady?Navier-Stokes\.DS_Store
?????文件?????????319??2018-08-07?05:51??2D?Unsteady?Navier-Stokes\afference_matrix_2D_p.m
?????文件?????????735??2018-08-07?05:51??2D?Unsteady?Navier-Stokes\afference_matrix_2D_v.m
?????文件?????????469??2018-08-07?05:51??2D?Unsteady?Navier-Stokes\assemble_convection_matrix.m
?????文件?????????399??2018-08-07?05:51??2D?Unsteady?Navier-Stokes\assemble_gradient_operator_matrix.m
?????文件?????????224??2018-08-07?05:51??2D?Unsteady?Navier-Stokes\assemble_load_vector_p.m
?????文件?????????302??2018-08-07?05:51??2D?Unsteady?Navier-Stokes\assemble_load_vector_v.m
?????文件?????????457??2018-08-07?05:51??2D?Unsteady?Navier-Stokes\assemble_mass_matrix.m
?????文件?????????467??2018-08-07?05:51??2D?Unsteady?Navier-Stokes\assemble_viscosity_matrix.m
?????文件?????????417??2018-08-07?05:51??2D?Unsteady?Navier-Stokes\constrain_matrix.m
?????文件?????????263??2018-08-07?05:51??2D?Unsteady?Navier-Stokes\constrain_matrix_column.m
?????文件?????????257??2018-08-07?05:51??2D?Unsteady?Navier-Stokes\constrain_matrix_row.m
?????文件?????????201??2018-08-07?05:51??2D?Unsteady?Navier-Stokes\constrain_vector.m
?????文件?????????224??2018-08-07?05:51??2D?Unsteady?Navier-Stokes\data_all_dof.m
?????文件?????????648??2018-08-07?05:51??2D?Unsteady?Navier-Stokes\element_convection_matrix_2D.m
?????文件?????????492??2018-08-07?05:51??2D?Unsteady?Navier-Stokes\element_gradient_operator_matrix_2D.m
?????文件?????????345??2018-08-07?05:51??2D?Unsteady?Navier-Stokes\element_load_vector_centre_2D.m
?????文件?????????346??2018-08-07?05:51??2D?Unsteady?Navier-Stokes\element_load_vector_gauss_2D.m
?????文件?????????348??2018-08-07?05:51??2D?Unsteady?Navier-Stokes\element_load_vector_nodes_v_2D.m
?????文件?????????507??2018-08-07?05:51??2D?Unsteady?Navier-Stokes\element_mass_matrix_2D.m
?????文件?????????552??2018-08-07?05:51??2D?Unsteady?Navier-Stokes\element_viscosity_matrix_2D.m
?????文件?????????242??2018-08-07?05:51??2D?Unsteady?Navier-Stokes\f_dN_2D_p.m
?????文件?????????847??2018-08-07?05:51??2D?Unsteady?Navier-Stokes\f_dN_2D_v.m
?????文件?????????241??2018-08-07?05:51??2D?Unsteady?Navier-Stokes\f_dW_2D_p.m
?????文件?????????846??2018-08-07?05:51??2D?Unsteady?Navier-Stokes\f_dW_2D_v.m
?????文件?????????181??2018-08-07?05:51??2D?Unsteady?Navier-Stokes\f_N_2D_p.m
?????文件?????????388??2018-08-07?05:51??2D?Unsteady?Navier-Stokes\f_N_2D_v.m
?????文件?????????330??2018-08-07?05:51??2D?Unsteady?Navier-Stokes\f_N_plot_2D_p.m
?????文件?????????664??2018-08-07?05:51??2D?Unsteady?Navier-Stokes\f_N_plot_2D_v.m
?????文件?????????180??2018-08-07?05:51??2D?Unsteady?Navier-Stokes\f_W_2D_p.m
?????文件?????????387??2018-08-07?05:51??2D?Unsteady?Navier-Stokes\f_W_2D_v.m
............此處省略45個文件信息