不管我怎么更改参数，一次迭代就显示inf和nan

[hurry123-hyy]

hyy@DESKTOP-VPAEG2N:~/2D_Euler_Solver/build$ /home/hyy/2D_Euler_Solver/build/2D_Euler_Solver
Iteration rho_res_L2 u_res_L2 v_res_L2 p_res_L2
1 nan nan nan nan
dumping flowfield... Iter = 1 physical_time = inf time_elapsed = 0.00000e+00 seconds

dumping flowfield... Iter = 1 physical_time = inf time_elapsed = 0.00000e+00 seconds