question_answer

Which one of the following equations represents the continuity equation for steady compressible fluid flow?                                     

A) \[\nabla .\rho \,\overline{V}+\frac{\partial \rho }{\partial \,t}=0\]   

B) \[\nabla .\rho \,\overline{V}+\frac{\partial \rho }{\partial \,t}=0\]

C) \[\nabla .\overline{V}=0\]                      

D) \[\nabla .\rho \,\overline{V}=0\]