RealFlow Tips by the Xperts – Part 1
We are back with a series of posts that will contain some useful tips you don’t want to miss! These will be provided by the RealFlow Xperts who have mastered the software and in some cases offer training services. Read on, and please do share your own tips and/or techniques you have developed along the way! 🙂
Josh is from Minneapolis, MN and he started his Visual Effects career there in 2010. Working for a great company called MAKE during 6 years, he learned from truly inspiring artists and began specializing in FX, dynamic simulations, procedural systems, and scripting. From the start, he really enjoyed both liquid simulation and Python scripting and he often uses them together. Josh spent lots of time studying water behavior and small scale simulations like drops, splashes, and puddles and he constantly does side projects in his free time to test and learn more. He now lives and works in New York City as a freelance FX Artist and 3D Generalist and considers himself lucky to do what he loves for a career.
Don’t overlook RealFlow’s rigid body solver, Caronte. Very versatile and works on mesh faces, not just convex hulls.
Brandon started his VFX career in 2003. He originally went to school for concept design and illustration, and while attending art school he got offered a freelance gig. The University of Washington was looking to do some scientific visualization of shore erosion. Having no clue how to do fluid simulations Brandon google up fluid simulation software and that led him to RealFlow. He taught himself how to use it and fell in love with it. From there he dabbled in other pieces of software and other types of VFX. He made a short demo reel full of tests and sent it around to games studios in the area and got hired at Surreal studio (now Midway Games) from there he kept growing as an artist and has gotten to work at many of the best studios in the industry Blur, Scanline, and Luma Pictures to name a few. Brandon is currently in Atlanta Georgia supervising various projects.
Use the underrated, and underutilized Object Field Daemon! If you ever need to help stick fluid to a surface, this is a great tool to use in addition with your friction settings.
Daniel is an FX Technical Director with more than 15 years in the field and is based in Sao Paulo, Brazil. He has a bachelor degree in Graphic Design and studied at Gnomon Visual Effects. Specializing in dynamic effects like fluids, destruction, explosions, and scripting, he is always striving for quality and constantly learning new software and new techniques. Daniel’s works were also published in 3D World Magazine.
When collating Alembic files of a simulation created in SLOW MOTION, always remember to turn the simulation rate back to 24 or 30 FPS. This way the alembic file speed will be correctly created and not messed up.
After a few years in the world of computer graphics, Dušan realized that CG Fluids Simulations interested him most. He has worked primarily with RealFlow to be more efficient. Currently, he works as a VFX artist at Heckler, and in the past, he was part of Doktor Fried and Spring Onion Studio.
Do not use default substeps, start from low values and your sim will be much faster.
Bringing to animation a Bachelor of Science degree (Gama Filho University, Rio de Janeiro, Brazil) and a postgraduate Biomechanics degree (Lenin Institute of Physical Culture Moscow, Russia), Marcelo has evolved an entirely unique style in the world of VFX.
He has experience in the sectors of TV commercials, documentary, and medical animation. Marcelo is a proficient Maya generalist, After Effects composer and Technical director of Liquid simulations in RealFlow with Python scripting capabilities.
Scene scale, scene scale, scene scale. Always consider scene scale to adjust your daemons and resolution.
Don’t go on pressing every button. Only use physics to change your settings.
Oyekunle is a Liquid Technical Director specializing in producing photoreal and stylized hydrodynamic simulations. Other tools used in conjunction with RealFlow – Houdini, and Maya.
Read the manual. It is the best tutorial on the software, and written by the best RealFlow instructor.
3D Digital Artist since 2003, partially freelance, partially employed. Daniel has been working with RealFlow since Version 4. He provided significant improvement feedback for the RealFlow | Cinema 4D and initiated Krakatoa for Cinema 4D Development. Daniel also initiated Arnold for Cinema 4D Development. He is a Maxon Cinema 4D Beta Tester.
Pay close attention to Scene Scale and Dimensions, RealFlows Units for Force, Velocity, and Distances are world units.
Karolina (Catalysee) Sereikaite
Founder of both Catalysee, and LearnWateryDesign. Karolina is an experienced Director with a proven track record of working in the 3D design industry. Top skilled in RealFlow, VRay and AAE, Organizational Leadership, and Psychology. Strong Arts and Design professional with a Bachelor’s degree in Psychology from Mykolo Romerio Universitetas. Karolina offers her LearnWateryDesign platform to create a better change in the fluid simulation industry with exquisite watery design concept & efficient workflow.
How to make foam pop and stand on top of the other liquid. And how to make it dissolve as real beer or cola foam does after a while? Here’s your answer: Density & Filter.
Make one domain with bigger density the other with lower one and filter them by collision. This way once your pouring of emitter hits any surface it will transfer to a domain with less density. To make the foam dissolve add another filter and filter particles back to a denser domain by age. Use Particle Tooltip to define exact age you need and surface tension or viscosity to make foam more solid if needed. Also, you can change viscosities of domains, so more dense one has more viscosity and less dense- less, this way you will enhance the overall effect. Lastly, you can add more noise and surface tension to make things go insane and have fun, or use it slightly for more stable and interesting results, not forgetting Drag force and it’s sensitive, but important value.
If you’re in LearnWateryDesign Masterclass, go to the RealFlow10 section, there I have a scene template prepared for you and all the explanation how to use it so you can simply change stuff in there and have great results. You can even use the script than from Cola case study and export even more random particles to make bubbles. Here you can see the video tutorial.
To make bubbles in render simply use spheres instead of points or add particle instancer spheres (even animated).
Stuart’s passion for 3D began at a young age and became a keen hobby or some could describe it as an obsession. In 2008 Stuart became a freelance VFX artist, after discovering RealFlow he became a fluid simulation specialist and then went on to work with Aardman and Tim Burton on feature films. With over 10 years’ experience using RealFlow he now works on TV commercials, TV Series, and the occasional film.
A little surface tension can go a long way, use the daemon to get better control.