  Currently the RHIC Beam Energy Scan is exploring a new region of the Quantum
Chromodynamic phase diagram at large baryon densities that approaches nuclear
astrophysics regimes. This provides an opportunity to study relativistic
hydrodynamics in a regime where the net conserved charges of baryon number,
strangeness, and electric charge play a role, which will significantly change
the theoretical approach to simulating the baryon-dense Quark-Gluon Plasma.
Here we detail many of the important changes needed to adapt both initial
conditions and the medium to baryon-rich matter. Then, we make baseline
predictions for the elliptical flow and fluctuations based on extrapolating the
physics at LHC and top RHIC energies to support future analyses of where and
how the new baryon-dense physics causes these extrapolations to break down.
First we compare eccentricities across beam energies, exploring their
underlying assumptions; we find the the extrapolated initial state is predicted
to be nearly identical to that at AuAu $\sqrt{s_{NN}}=200$ GeV. Then the final
flow harmonic predictions are based on linear+cubic response. We discuss
preliminary STAR results in order to determine the implications that they have
for linear+cubic response coefficients at the lowest beam energy of AuAu
$\sqrt{s_{NN}}=7$ GeV.
