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In the field of astrophysics, the term **hydrodynamics** is commonly
used for **fluid dynamics**, the study of forces and motion in bodies
of liquids or gases. (In some scientific/engineering fields, the
term is used more specifically to refer to the dynamics of
non-compressible fluids, i.e., liquids, reserving the term
**aerodynamics** for the dynamics of gases. In astrophysics, there
are situations where the formulae for non-compressible fluids are
a useful approximation of the dynamics of gases.)

A simulation of fluid flows (**hydrodynamic model**
or **hydrodynamical model**) can be used for modeling Earth
oceans or atmosphere, or the same for atmospheres of astronomical
bodies.

**Magnetohydrodynamics (MHD)** is the study of electrically conducting fluids (either
liquid or gas) in motion and their interaction with coincident
electric and magnetic fields. Other subclasses of hydrodynamics:

**relativistic hydrodynamics**(**RHD**)**relativistic magnetohydrodynamics**(**RMHD**)**radiation hydrodynamics**(also**RHD**)**radiation magnetohydrodynamics**(also**RMHD**)

Such additional factors are significant in some situations, such as modeling supernovae.

http://en.wikipedia.org/wiki/Hydrodynamics

adaptive mesh refinement (AMR)

AREPO

Castro

computational astrophysics

effective field theory (EFT)

Enzo

finite element method (FEM)

flux

FORNAX

flux reconstruction (FR)

finite volume method (FVM)

gas flow

general circulation model (GCM)

Godunov scheme

gravity wave

HARM²

high resolution shock capture (HRSC)

hydrodynamic equations

hydrodynamic escape

Madelung equations

Magellanic Stream

MagIC

magnetohydrodynamics (MHD)

N-body simulation

Navier-Stokes equations (NS equations)

passive dust

permeability (κ)

planet formation

PLUTO Code

PROMETHEUS/VERTEX

RAMSES

radiation hydrodynamics (RHD)

semi-analytic model (SAM)

smoothed-particle hydrodynamics (SPH)