Select the Phoenix Simulator and open the Grid rollout. Set the Boundary Conditions: Z to Jammed (-). This will cause the bottom wall of the simulator to act as a solid obstacle, allowing us to use it as the ground. Set the Cell Size to 8 to increase the resolution of the grid. Set the X/Y/ Z size to 80/80/20. The Adaptive Grid option should be set to Smoke by the Large Scale Smoke Preset. The Adaptive Grid allows the container to resize on-demand as the simulation progresses, saving you a lot of time. Instead of calculating a giant grid from the start, a specific channel is tracked (Smoke in this case) and the grid is automatically resized around it. Enable Maximum Expansion and set the X/Y/Z dimensions according to your needs. Because the Z axis is Jammed in the negative Z direction, the Z(-) field is left at 0. Set the Extra Margin to 10 - this option allows the adaptation to keep a number of voxels close to the walls as a buffer zone and expand the grid earlier than usual. This can be especially useful when simulating fast-moving objects or explosions as it allows the simulator to expand before any clipping occurs. If you run the simulation and there is no smoking coming out of your emission geometry, please make sure that the geometry is inside the simulator. If you are following along this tutorial and using the provided project files, move the emission geometry 10 units up in the Z axis, or move the Simulator 10 units down. |
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