When I derived the momentum equation in x-direction, I got this equation (directly without any manipulation)\( \rho\frac{Du}{Dt}=-\frac{\partial p}{\partial x}+\frac{\partial \tau_{xx}}{\partial x}+\frac{\partial \tau_{yx}}{\partial y}+\frac{\partial \tau_{zx}}{\partial z}+\rho f_x\). Which of these models have I used?

When I derived the momentum equation in x-direction, I got this equati

1.	When I derived the momentum equation in x-direction, I got this equation (directly without any manipulation)\( \rho\frac{Du}{Dt}=-\frac{\partial p}{\partial x}+\frac{\partial \tau_{xx}}{\partial x}+\frac{\partial \tau_{yx}}{\partial y}+\frac{\partial \tau_{zx}}{\partial z}+\rho f_x\). Which of these models have I used?
A.	a)
B.	b)
C.	c)
D.	d)
Answer» C.