fix table

docs/source/FluidEquations.rst

@@ -5,15 +5,15 @@ Fluid Variables
    | Variable              | Definition                                       |
    +=======================+==================================================+
    | :math:`\rho_g`        | Fluid density                                    |
-   +------------+-------------------------------------+-----------------------+
+   +-----------------------+--------------------------------------------------+
    | :math:`\varepsilon_g` | Volume fraction of fluid (= 1 if no particles)   |
-   +------------+-------------------------------------+-----------------------+
+   +-----------------------+--------------------------------------------------+
    | :math:`U_g`           | Fluid velocity                                   |
-   +------------+-------------------------------------+-----------------------+
+   +-----------------------+--------------------------------------------------+
    | :math:`\tau`          | Viscous stress tensor                            |
-   +------------+-------------------------------------+-----------------------+
+   +-----------------------+--------------------------------------------------+
    | :math:`g`             | Gravitational acceleration                       |
-   +------------+-------------------------------------+-----------------------+
+   +-----------------------+--------------------------------------------------+
 
 Fluid Equations
 ===============
@@ -27,8 +27,7 @@ Conservation of fluid momentum:
 .. math:: \frac{ \partial (\varepsilon_g \rho_g U)}{\partial t} + \nabla \cdot (\varepsilon_g \rho_g U_g U_g) + \varepsilon_g \nabla p_g = \nabla \cdot \tau
            + \sum_{part} \beta_p (V_p - U_g) + \rho_g g
 
-where :math:`\sum_p \beta_p (V_p - U_g)` is the drag term in which :math:`V_p` represents the particle velocity and 
-      :math:`\beta_p` is the drag coefficient associated with that particle
+where :math:`\sum_p \beta_p (V_p - U_g)` is the drag term in which :math:`V_p` represents the particle velocity and :math:`\beta_p` is the drag coefficient associated with that particle
 
 Conservation of fluid volume: