The blocking strategy for the sphere cube geometry involves creating an Ogrid around the cube and then fitting the inside of the Ogrid to the cube using the prescribed points of the model.
In this step, you will create the initial block.
> Create Block 
> Initialize Blocks 
Ensure that Part is set to the correct material (FLUID).
Retain the selection of 3D Bounding Box in the Type drop-down list.
You need not select entities when creating a bounding box around the entire geometry.
Click (Figure 68: Initial Blocking).
