Cell Size
The third input of the Flow Analysis block, Cell Size, is the single parameter used to define the Cartesian grid on which to run the simulation.

The smaller your cells, the more there are to run the particle distribution functions on. Inherently, flow analysis setups with small cells require more GPU memory to run.
Estimating Required GPU Memory
Ten million (10e6) cells require about 1GB of dedicated GPU memory to run. You can use the equation below to estimate required GPU memory for your flow analysis setup.

