公式动态渲染

[李东岳]

$$\begin{array}{}\text{(1)}& \rho \frac{\mathrm{\partial }\mathbf{U}}{\mathrm{\partial }t}+\rho \mathrm{\nabla }\cdot (\mathbf{U}\otimes \mathbf{U})=-\mathrm{\nabla }p+\mathrm{\nabla }\cdot (\mu \mathrm{\nabla }\mathbf{U})+\left({\rho }_{\mathrm{r}\mathrm{e}\mathrm{f}}(1-\beta (T-T_{\mathrm{r}\mathrm{e}\mathrm{f}}))\right)\mathbf{g}\end{array}$$