Table A1.

Inflow boundary conditions for both simulations, one pertaining to parabolic steady inflow and the other corresponding to a parabolic pulsatile inflow. The parameters used for the boundary conditions are f, the non-dimensional frequency, which is matched to the zebrafish heart at 96 hpf, and $V_{in}$, the maximum inflow velocity.

Case	Inflow BC
Steady Inflow	${\mathbf{u}}_{\mathbf{in}}=\left(\begin{array}{c}\frac{V_{in}}{d_{AV}^2}tanh(2t)\left(\frac{1}{4d_{AV}^2}-y^2\right)\\ 0\end{array}\right)$
Pulsatile Inflow	${\mathbf{u}}_{\mathbf{in}}=\left(\begin{array}{c}\frac{V_{in}}{d_{AV}^2}|sin(2\pi ft)|\left(\frac{1}{4d_{AV}^2}-y^2\right)\\ 0\end{array}\right)$