update Readme.md

Author: maruthinh

README.md

@@ -5,9 +5,15 @@ To run the code
 ```
 python3.8 lid_driven_cavity.py
 ```
-Velocity contour plot obtained from the solver. 
 
-Simulation is carried out with 64 x 64 grid points. 
+**Sample results**
+
+*Simulation parameters*
+- Reynolds number: 100
+- Mach number: 0.1
+- Number of grid points: 64 x 64
+
+Velocity contour plot obtained from the solver. 
 
 Solution has converged to 1e-10
 

lid_driven_cavity.py

@@ -13,8 +13,15 @@
 tot_nx = nx + ghost_x
 tot_ny = ny + ghost_y
 ndim = 2
+
+#Simulation parameters
+Re=100
+Mach=0.1
+ref_len=1.0
+res=ref_len/nx
+
 model = D2Q9()
-sim_params = SimParams(mach=0.1, reynolds_num=100, ref_len=1.0, res=0.02)
+sim_params = SimParams(mach=Mach, reynolds_num=Re, ref_len=ref_len, res=res)
 q = model.q
 
 rho_ini = 1.0