Learn Blender's NEW Water Physics in 6 minutes! (Blender 2.9+)

[Music] [Music] start by scaling up the default cube you don't want to delete it because this is what we're going to use to simulate our fluid simulation just make it a little bit bigger and the next what we're going to do is we're going to add the object we want to be our liquid so i'm just going to use this suzanne head move it up a little bit and next what we have to do is apply our physics objects to our 3d objects so i'm going to select the box going to go to the blender physics tab click on fluid type will be domain domain type will be liquid and let's leave resolutions at 32 for now next i'm going to click on the suzanne head set the type to fluid type flow flow type liquid and flow behavior is very important if you want it to be like a faucet as in a continuous flow of liquid set set it to inflow if you want it to be a drain meaning any water that touches the head will disappear set it to outflow and if you want it to just be like a single droplet of water that's shaped like a monkey head set it to geometry next go back to our domain object and we're going to go down to the very bottom where we have type type is very important if you choose replay it will bake your render live using the timeline after you hit play if you set type to modular you can bake either just the particles in the setting tab followed by the mesh and the mesh tab or you can set it to all when you're finished with all your settings and you just want to do one final bake and let your computer sit for a couple days just set it to type all and you can hit bake all before you do that make sure you check mesh so it actually wraps a mesh around your object one important thing to note when you're editing the mesh settings is that the up res factor controls the overall resolution of your mesh after it's generated so if i set this to a value of 1 the mesh will be a lower resolution but you'll see if i turn it up to a value like two or three you can see it becomes much more subdivided but it will also take much longer to bake so make sure you keep that in mind when you're finalizing your render and make sure you set the frame timings we're going to set the end time to 100 on the timeline and 100 on the frame on the fluid simulation with mesh selected and we're also going to increase resolution divisions to 64. you can go ahead and set type to all and hit bake and then after letting it sit for a couple seconds and when it is finished baking you see we have a complete fluid sim we're going to go back and hit play and there you can see our liquid is now being simulated now it's time for some extra settings first off make sure that when you save your blend file you actually change the cache folder as well you can see here it's saved somewhere in my app data folder you can change your cache file location by clicking on the folder icon and navigating to wherever you want your simulation to be saved if you want to make your scene more interesting and make it interact with other objects simply create a new object place it in the way of your fluid simulation make this object a fluid object as well set type to effector leaf effector type to collision and go back to your domain object and then simply hit bake again you can see here now that we have an effector in our scene if we hit play the liquid actually flows around it and even stays on top of it a couple more useful settings are the border collisions basically this enables or disables collision for the domain itself so i can uncheck bottom and this will make it so that when a liquid touches the bottom of the simulation it simply disappears you can also enable diffusion which basically controls viscosity and surface tension there's a couple defaults here in the settings water oil and honey you can simply click on one and it will change the exponent or and or base to the proper uh surface tension and or viscosity so if we go to the bake setting and hit bake all i also increased the resolution divisions to 64. but you'll see when we hit play here that the liquid kind of acts a little bit more like honey where it doesn't try to rush off completely it kind of sticks around a little bit more you can see this in the particles you can see how it kind of slowly drips down in contrast to the water particles where you can see they more quickly kind of rush off my final tip is that if you want to quickly make a water simulation first just create an object that you want to simulate like a cylinder and what you can do is if you hit f3 and type quick liquid what it will do is it will automatically create a domain object for you it will turn the object you had selected into a liquid and it will also give it a basic material as you can see here in the shading tab you can see it gives it a glass bsdf and also it uses volume absorption so it behaves like real water and you can see by default it uses the replay type so if we hit play it'll actually simulate our fluid and if we go to the physics tab here and we enable mesh go back to the beginning you can see there's our liquid and if we go to the material preview it actually kind of looks like liquid of course this would look much better with a cycles render so if you want to leave your computer running for another three days you can leave it running with cycles and get some realistic light bouncing around the water material so that's it thank you for watching if you enjoyed what you saw please like and subscribe and if you have any questions or comments please leave them down below thank you

Channel: 3D Tinkerer

Views: 247,024

Rating: 4.9286389 out of 5

Keywords: blender, fluid simulation, water physics, Mantaflow, manta flow, blender 2.9, blender 3D, Blender, 3D modeling, tutorial, 3Dtinkerer, howto, learn

Id: e3mhJXuveFo

Length: 6min 18sec (378 seconds)

Published: Wed Dec 16 2020