Introducing Gravity

In many fluid simulations gravity plays an important role. Here we consider five methods for introducing a body force into the lattice Boltzmann model.

• The Classic Boltzmann Equation
• Combining the Gravity Term and the Pressure Tensor
• Adding a Force Term to Equation ()
• Calculating the Equilibrium Distribution with an Altered Velocity
• Adding an Additional Term to the Boltzmann Equation
• Review of Methods