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Frequently Asked Questions
The purpose of this page is to provide responses to questions that we are frequently asked. Information on issues related to scene trouble shooting may also be found in this documentation page: Scene Troubleshooting.
- Where can I buy the FLIP Fluids addon?
- How do I download the FLIP Fluids addon?
- Are future version updates free?
- Can the FLIP Fluids addon be installed on multiple systems?
- How do I update the FLIP Fluids addon to a new version?
- Can I use the addon for commercial purposes?
- How is the FLIP Fluids addon licensed?
- What is the difference between Blender's Mantaflow fluid simulator and the FLIP Fluids addon?
- Why are some features hidden behind the Developer Tools option?
- What are the limitations of the FLIP Fluids addon?
- Can FLIP Fluids addon simulations be exported to Unreal Engine?
- Can the fluid simulation push around rigid body objects?
- Can the FLIP Fluids simulator be used to produce scientific/engineering simulations?
- Does the FLIP Fluids simulator support Blender forces and force fields?
- Does the FLIP Fluids simulator support mixing multiple fluids and materials?
- Can the FLIP Fluids addon be used for ship wake simulations?
- My CPU is running under 100% usage while simulating. Is this normal?
- Is the FLIP Fluids simulator GPU accelerated?
See the Official Marketplaces of the FLIP Fluids Addon page for where the FLIP Fluids addon is available for sale.
See the Official Marketplaces FAQ for how to download the FLIP Fluids addon product files.
Yes! All future version updates for the product are provided at no extra cost.
Yes! There is no restrictions for how many systems the product can be installed on.
Before updating to a new version, you must first uninstall the previous version. In short, the safest way to update to a new version is to:
- Restart Blender
- Uninstall previous version
- Restart Blender
- Install new version
- Restart Blender
- For detailed instructions on how to install or uninstall the addon, see: Addon Installation and Uninstallation.
- For how to download new versions of the FLIP Fluids addon, see the Official Marketplaces FAQ: How do I download the FLIP Fluids addon product files?
Yes! Everything that you create with the addon is completely owned by you. There are no restrictions for what you can and cannot do with the content that you create.
The FLIP Fluids addon and content uses multiple licenses: GPL, MIT, and Standard Royalty Free. In general:
- The Blender addon code is licensed under the GPL.
- The fluid engine is licensed under the MIT license.
- Some addon and product content will be using a Standard Royalty Free license. This license may cover content such as media (images/textures/videos), Blend files, materials, presets. Source code files will state their license at the top of the file. Assets will include a license file and information in their containing directory.
See FLIP Fluids Addon vs Blender Mantaflow.
Current bugs in Blender or stability issues in Blender can affect some features of the FLIP Fluids addon. Since these features are affected by an issue that is outside of our control, these features will be hidden by default. Enable the developer tools option in the FLIP Fluids preferences menu to unhide these features. The preferences menu can be opened with Help > FLIP Fluids > FLIP Fluids Preferences.
For the current issues, affected features, and workarounds, see the Preferences > Developer Tools documentation.
Is the FLIP Fluids addon right for your project? The FLIP Fluids addon is a liquid simulation tool based on the popular FLIP simulation method which is short for FLuid Implicit Particle. You should always choose the right tool for the job, and like a hammer, this addon might not always be the right tool to use.
There may be limitations in the FLIP Fluids development project, limitations in the FLIP simulation method, or limitations of Blender that may affect success in creating your desired fluid effect. See this documentation topic that details common limitations of the FLIP Fluids addon and Blender: Limitations of the FLIP Fluids addon.
Export of a FLIP Fluids addon simulation to Unreal Engine is only partially supported. Simulations can be exported to the Alembic (.abc) format, but only the fluid surface can be imported into Unreal Engine. Whitewater (foam/bubble/spray) and fluid particles cannot be imported into Unreal Engine due to the limitation that the Alembic mesh must contain polygon geometry. The whitewater and fluid particles contain only vertex geometry and do not contain polygons.
From: Unreal Engine 5.0 Documentation > Alembic File Importer > Importing Alembic Files
Warning: Currently, Unreal Engine only supports meshes containing three and four-sided polygons. Your Alembic data will fail to load if your geometry contains any polygons with greater than four sides, or if your geometry is made from NURBS or SubDiv surfaces.
Related Topic: Alembic Export Support > Alembic export for use in other software
See Limitations of the FLIP Fluids addon: Fluid and Rigid Body Interaction
See Limitations of the FLIP Fluids addon: Usage in Scientific or Engineering simulations
Force fields are supported using our own custom force field physics system. However, there are some limitations to be aware about: Limitations of the FLIP Fluids addon: Force Field Support
See Limitations of the FLIP Fluids addon: Multiple Fluid Interaction and Mixing Fluid Materials
See Tips for Creating Ship Simulations
Yes, this is normal. See: Performance Notes and Tips > Performance FAQ for more information.
The FLIP Fluids simulator is not GPU accelerated. See: Performance Notes and Tips > Performance FAQ for more information.