topic Re: Modeling a splash with fluid in 3ds Max Modeling Forum

Modeling a splash with fluid

contact — Fri, 11 Jan 2019 14:36:29 GMT

Hello,

I would like to make something like this :

I tried with the new fluid system but I'm not used to it and I can not find many tutorials.

I guess it is something possible with fluid , maybe with the guide option?

Do you have some advice for me ?

I know how to model it from scratch with an edit poly but it's not the goal here.

Thank you

Pierre

Re: Modeling a splash with fluid

hagen.deloss — Mon, 14 Jan 2019 17:38:22 GMT

Hi @contact

Great to hear from you on the forums! I would suggest looking through developer Tom Hudson's videos here. the latest 4 video's pertain to 3DS Max Bifrost fluid simulations, and there are some extremely useful tips within 😄

Oh, I would also say, looking through @Anonymous's old posts could be somewhat helpful, as he has done some amazing Bifrost particle simulations.

I will see if I can come up with a demo scene and get back to you,

Looking forward to talking with you further!

Please select the Accept as Solution button if a post solves your issue or answers your question.

Re: Modeling a splash with fluid

contact — Mon, 14 Jan 2019 18:11:47 GMT

Hello Hagen,

Thank you very much for your reply. I will absolutely look at the links you sent me.

It would be a great help to have more fluid tutorials from autodesk like , for example, what Chaosgroup is doing with Phoenix 🙂

If you can find a demo sceno it would be perfect , during that time, I will continue my tests on my side.

Best

Pierre

Re: Modeling a splash with fluid

hagen.deloss — Mon, 14 Jan 2019 18:43:23 GMT

@contact

I completely agree! I wish there was more time in the day for me to make more demo videos myself 😄

I came up with a fun little scene to showcase some tools you could use to get this effect, but I'm curious, what version of 3DS Max are you using? I don't want to give you a scene you can't use!

Here is a screenshot of the fluid I was able to get, is this similar to what you are looking for?

I'm hoping to make video walking through my process on making this!

Re: Modeling a splash with fluid

contact — Mon, 14 Jan 2019 19:56:05 GMT

It looks nice!

I'm using max 2019 sp3.

Best.

Pierre

Re: Modeling a splash with fluid

hagen.deloss — Tue, 15 Jan 2019 00:57:06 GMT

@contact

Great, so am I!

So I will take some time soon to post a video walking through my process to get this result (and a few fun things I found along the way), but in the meantime, I have attached the scene file to this message.

To create a fluid render

Create geometry for the fluid to interact with
Navigate to Command Panel>Geometry>Fluids
Click and drag on the workspace grid to create a fluid system
open up the Simulation View
Under the Liquid Attributes, add the previously created geometry as a Collider

Create a motion Field (optional)

Navigate to Command Panel>Space Warps>Motion Field
Click and drag in the workspace grid to create the Motion Field
The Motion Field can be manipulated throughout the fluid simulation
Navigate back to the Simulation View
Under the Liquid Attributes, add the Motion Field in the Motion Fields tab

Additionally, under the Solver Parameters tab of the Emmiter Object, the checkbox "Enable Liquid Emission" can be keyframed on and off.

After letting the fluid run for 10-30 frames, I stopped it, and then created a Mesher object.

To create a Mesher

Navigate to Command Panel>Geometry>Compound Objects>Mesher
Click and drag on the workspace grid to create the Mesher
Under the Mesher Properties, select "Pick Object"
Select the Fluid Simulation

From here, a number of Modifiers can be applied to the Mesher, I personally added a twist and bend deformer!

It's actually pretty fun once you get the process down! Here are a few other videos on Fluid simulation from the Autodesk Learning Channel Youtube.

I really hope this helps, and let me know if you have any further questions regarding this process!

Re: Modeling a splash with fluid

contact — Tue, 15 Jan 2019 15:06:26 GMT

Hello Hagen,

I also managed to go further by following your advice. However, I am still a little far from the desired result.
The deformers stretch the geometry and do not look natural enough. I also miss the drops that are detached from the general volume. I will continue to experiment hoping to find a solution.
In the meantime, a problem has occurred: I can not open the simulation window anymore, when I click on it, nothing happens. I tried on an empty scene , the problem is the same.
Is this a known problem?

Best

Pierre

Re: Modeling a splash with fluid

hagen.deloss — Tue, 15 Jan 2019 16:40:42 GMT

@contact

Mesh stretching does sound like a problem, I would say to use the deformers sparingly perhaps, and simulating the liquid around a invisible collider mesh of the desired shape. In regards to the fluid droplets, I would guess that changing the viscosity settings within the Liquid Parameters could help get the right result.

Two things in regards to the simulation window disappearing, first, is it fluid simulation specific? If you make a new fluid solver, is the simulation view accessible again? If not, are you running Max with 2 monitors or more? It could be that the Fluid Dialogue box is registering on another screen. This is a known issue, and I would suggest following this video guide on how to get it back (it pertains to Maya as well), or follow the steps below.

Click to open the desired dialogue box (in this case the Simulation View)
Hold alt+press space bar, this will open up windows menu pulldown
Select Move
Hit any arrow key on your keyboard (without clicking the mouse)
Now drag the window back into view using your mouse cursor

I hope this helps to resolve the issue! If not, please let me know so we can continue troubleshooting the issue!

Please select the Accept as Solution button if a post solves your issue or answers your question.

Re: Modeling a splash with fluid

hagen.deloss — Tue, 15 Jan 2019 17:07:10 GMT

@contact

For droplets, you can change the Liquid parameters Droplet threshold to a lower number, so droplets occur more often, and sooner in the simulation. Here are some render settings for a different fluid simulation test.

Talk to you soon!

Re: Modeling a splash with fluid

contact — Tue, 15 Jan 2019 22:03:03 GMT

Hello Hagen,

Thank you for your reply. Unfortunately I already tried to move the windows with the keyboard but it does not fix my problem.

If I start a new scene with a new fluid simulation, it's the same.

And it's a fresh and clean install of max...

Two years ago, I think had a similar issue with the curve editor but I can't remember what was the solution. I need to search the forum for it.

Best

Pierre

Re: Modeling a splash with fluid

hagen.deloss — Thu, 17 Jan 2019 18:48:26 GMT

@contact

Hmmmm, curious...and frustrating I imagine! Here are a couple other possible avenues to resolve this issue, please keep me updated! I hope you get back into making some awesome fluid simulations!!!