Update app.py

app.py

@@ -6,11 +6,15 @@ st.write("""
          ## First Layer Thickness Calculation based on y+
          """)
          
+with st.form("my_form"):
+    # Fluid properties
+    mu =  st.number_input("Viscosity [Pa*s]", step=1e-6, format="%.7f")
+    rho = st.number_input("Density [kg/m^3]", step=1e-6, format="%.5f")
+    st.form_submit_button('Submit properties')
+
 
-# Fluid properties
-mu =  st.number_input("Viscosity [Pa*s]", step=1e-6, format="%.7f")
-rho = st.number_input("Density [kg/m^3]", step=1e-6, format="%.5f")
 nu = mu/rho     # Dynamic viscosity [m^2/s]
+    
 
 # Flow properties
 D = st.number_input("Characteristic Length [m]", step=1e-6, format="%.5f")         # Characteristic Length [m]