Is there a way to move the text associated with an \underbrace{}
downward? I've attempted to depict what I mean in the marked-up image below. The text "Thermal Conduction" does not need to be contained with in the left and right parentheses, nor the square braces. The goal is to reduce the overall height of the actual equation by moving the text outside the parentheses.
In case it is helpful, here is the raw latex used to generate the heat transport equation in porous media (shown below):
\begin{equation*}
\underbrace{\left( 1+ \frac{1- \phi}{\theta} \frac{C_{P_{s}}}{C_{P_{w}}} \frac{\rho_s}{\rho_w} \right) \frac{\partial \left( \theta T \right) }{\partial t}}_\text{change in stored energy}=\frac{\partial }{\partial x_i} \left[ \theta \left( \underbrace{\frac {k_{T_{bulk}}}{\theta C_{P_{w}} \rho_w}}_{\text{Thermal} \atop \text{Conduction}} + \alpha \frac{\mathrm{q}}{\theta} \right) \cdot \frac{\partial T}{\partial x_j} \right] - \frac{\partial }{\partial x_i} \left( \theta v_i T \right) + q'_s T_s + \frac{\theta \gamma_w }{C_{p_{w}}} + \frac{ \left( 1 - \phi \right) \gamma_s }{C_{p_{w}}} \frac{\rho_s}{\rho_w}
\end{equation*}
\left( \right)
by\Bigl( \Bigr)
?\relax
before the\underbrace
?