equations agreed with implementation

doc/2fluids.tex

@@ -161,7 +161,7 @@ $\langlC\bm{f}_{q_p}^0,\psi_i\ranglC$&&&$=0$\\[1em]
 
 
 \begin{align*}
-\bm{f}_{\bm{u}}^0&=\rho_k\left( \dpartial{\ub}{t}+ \ub\dfrac{\nb\cdot\ub}{q}+\dfrac{\bm{A}_k\cdot\ub}{q}\right)-p\nb q_k+\mu\dfrac{\bm{B}_k\cdot\nb q_k}{q_k}-q_k\rho_k\bm{g}\\[1em]
+\bm{f}_{\bm{u}}^0&=\rho_k\left( \dpartial{\ub}{t}+ \ub\dfrac{\nb\cdot\ub}{q}+\dfrac{\bm{A}_k\cdot\ub}{q}\right)-p\nb q_k-q_k\rho_k\bm{g}\\[1em]
 \bm{f}_{\bm{u}}^1&= -q_kp\ib+\mu \bm{B}_k\\[1em]
 \bm{f}_{\bm{ub}}&=\bm{B}_k\cdot\bm{n}_k+q_k p\bm{n}\\[1em]
 \bm{f}_{q_k}^0&=\dpartial{q_k}{t}+\varepsilon\nb\cdot( q_k\rho_k\bm{g})\\[1em]