SimplyMaya Forums

Welcome to the forum, feel free to ask questions here.

Home / forum / Lounges / Maya Basics & Newbie Lounge / Desperate help! Maya fluids
Register FAQ Members List Calendar Mark Forums Read

New Thread
 
Thread Tools
Old 28-03-2011, 06:14 PM   #1
Mayastudent2011
Registered User
 
Join Date: Mar 2011
Posts: 3
Thanks: 3
Thanked 0 Times in 0 Posts
Default Desperate help! Maya fluids

Hi,
I am completely new to MAYA. I am trying to create 6 or 7 oil fire plumes like in this image for an art project.

I need to recreate 6 or 7 oil fire plumes individually with a duration of 2-3 minutes and I will composite them in an after effects composition. The size and shape should be identical to the plumes in this image.

Last edited by Mayastudent2011 : 10-04-2011 at 06:44 PM.
Mayastudent2011 is offline   Reply With Quote
Old 29-03-2011, 01:54 AM   #2
David
SM Site Programmer
 
David's Avatar
 
Join Date: Apr 2002
Posts: 3,029
Thanks: 49
Thanked 389 Times in 304 Posts
Default

I hate to say it but if your totally new to Maya forget it. 7 clouds of smoke identical to a photograph lol I know people that would have problems with with this after using Maya for years.

Might as well stick up a picture of toy story 3 and say help, I need to do this in the next 10 minutes.

2 minutes of smoke at realistic resolution and 30fps is 3,600 frames I've just set up a simple fluid x7 with self shadowing and some half decent lighting and it would take about 33 days to finish rendering (quad processed i7 @ 3.8 ghz) and even that would not be what i'd call photo real pretty close but....

If you new to Maya and looking to replicate photrelistic smoke in a hurry i think you'll be in for a disappointment. If you just want crapy low rez smoke well this is doable.

Dave
__________________
Worst Response To A Crisis:
From a readers' Q and A column in TV GUIDE: "If we get involved in a nuclear war, would the electromagnetic pulses from exploding bombs damage my videotapes?"
David is offline   Reply With Quote
The Following User Says Thank You to David For This Useful Post:
Mayastudent2011 (01-04-2011)
Old 29-03-2011, 02:49 AM   #3
Mayastudent2011
Registered User
 
Join Date: Mar 2011
Posts: 3
Thanks: 3
Thanked 0 Times in 0 Posts
Default

Holy crap, that is terrible news. It doesn't have to be high res at that distance anyway. Doing it in 3D would be over kill anyway. I just wanted to do something like this but with a longer duration and different colour. 1st 17 seconds YouTube - Michael Murphy VFX Reel
Mayastudent2011 is offline   Reply With Quote
Old 29-03-2011, 03:24 AM   #4
David
SM Site Programmer
 
David's Avatar
 
Join Date: Apr 2002
Posts: 3,029
Thanks: 49
Thanked 389 Times in 304 Posts
Default

Mayastudent It's not as bad as I make it seam, but this really is not something you'll want to be doing your first time out in Maya.

Anyway good luck with your project and welcome to the site.
David
__________________
Worst Response To A Crisis:
From a readers' Q and A column in TV GUIDE: "If we get involved in a nuclear war, would the electromagnetic pulses from exploding bombs damage my videotapes?"
David is offline   Reply With Quote
The Following User Says Thank You to David For This Useful Post:
Mayastudent2011 (01-04-2011)
Old 29-03-2011, 07:12 AM   #5
gster123
Moderator
 
gster123's Avatar
 
Join Date: May 2005
Location: Manchester Uk
Posts: 6,300
Thanks: 1
Thanked 51 Times in 45 Posts
Default

Just created this very quickly about 5 mins (not rendered of course, just in the viewport), should give you some pointers.

1. Create a 3D fluid container with a sphere volume axis.

2. Set density emission to 4, emission turbulance to about 5 with a detail of about 0.2.

3. Set the res to about 30 - 40 with auto resize (speeds up sim times)

4. Set damp to 0.01 (essential for any sim) and high detail solve to all grids.

5. Contents details - Density set dissapation to 0.1.

6. Velocity set swirl to about 7 to get eddy's.

7. Adjust the opacity ramp to 0 to start then a ramp up at about 0.061.

8. Add a wind field to move it slightly in one direction.

As David said fluids are difficult to do correctly as they are a balance of a lot of settings and take a long time to learn.

Steve
Attached Thumbnails
Click image for larger version

Name:	fluidExample.jpg
Views:	388
Size:	57.3 KB
ID:	46539  
__________________
"No pressure, no diamonds" Thomas Carlyle
gster123 is offline   Reply With Quote
The Following 2 Users Say Thank You to gster123 For This Useful Post:
bullet1968 (01-04-2011), Mayastudent2011 (01-04-2011)
Old 01-04-2011, 05:04 PM   #6
Mayastudent2011
Registered User
 
Join Date: Mar 2011
Posts: 3
Thanks: 3
Thanked 0 Times in 0 Posts
Default

I can't even create that. I guess I really need help. I have to take courses on MAYA.
Mayastudent2011 is offline   Reply With Quote
Old 01-04-2011, 05:57 PM   #7
gster123
Moderator
 
gster123's Avatar
 
Join Date: May 2005
Location: Manchester Uk
Posts: 6,300
Thanks: 1
Thanked 51 Times in 45 Posts
Default

Dude, Fluids are probably one of the hardes things to get to grips with, especially to do them well. There is also very little on them online.

Expirement with them, if you get really stuck i'll recreate the scene.

(I teach Maya and a unit on Maya fluids for VFX so dont get disheartened)
Steve
__________________
"No pressure, no diamonds" Thomas Carlyle
gster123 is offline   Reply With Quote
Old 01-04-2011, 06:43 PM   #8
bullet1968
Lifetime Member
 
bullet1968's Avatar
 
Join Date: Feb 2010
Location: Australia
Posts: 4,255
Thanks: 158
Thanked 651 Times in 621 Posts
Default

I did it gster but get the particles all through the container....got the main smoke but it looks like its in fog LOL...seriously hard stuff man!
__________________
bullet1968

"A Darkness at Sethanon", a book I aspire to model some of the charcters and scenes
bullet1968 is offline   Reply With Quote
Old 04-04-2011, 07:49 AM   #9
gster123
Moderator
 
gster123's Avatar
 
Join Date: May 2005
Location: Manchester Uk
Posts: 6,300
Thanks: 1
Thanked 51 Times in 45 Posts
Default

Hi Ant,

If it looks a little too full adjust the opacity ramp, expirementation will get you there.

Steve
__________________
"No pressure, no diamonds" Thomas Carlyle
gster123 is offline   Reply With Quote
Old 04-04-2011, 08:56 AM   #10
bullet1968
Lifetime Member
 
bullet1968's Avatar
 
Join Date: Feb 2010
Location: Australia
Posts: 4,255
Thanks: 158
Thanked 651 Times in 621 Posts
Default

Thanks steve...will have another look at it this week

cheers bullet
__________________
bullet1968

"A Darkness at Sethanon", a book I aspire to model some of the charcters and scenes
bullet1968 is offline   Reply With Quote
Old 04-04-2011, 11:23 AM   #11
LauriePriest
Moderator
 
LauriePriest's Avatar
 
Join Date: May 2003
Location: London
Posts: 1,001
Thanks: 0
Thanked 59 Times in 51 Posts
Default

One of the important concept of fluids (nonpatricle) based simulations is that there are no such things as particles ! Data is stored on a grid. In the case of density this is a number that represents the distance from the surface of the fluid (negative for inside positive for outside) using this information maya is drawing the volume representation. Based on the opacity ramp you provide, so if you say anything with a gradient (distance to the surface ..0 ..) is greater than +0.3 should be invisible and everything in your fluid is no more than 0.2 units away from the fluid itself you will get this foggy look to everything.

So the point is, tweaking opacity isnt increasing the size of the particles but telling where the visible boundary of your surface should be drawn, relative to the calculated fluid surface.
__________________
FX supervisor - double negative
LauriePriest is offline   Reply With Quote
The Following User Says Thank You to LauriePriest For This Useful Post:
bullet1968 (04-04-2011)
Old 04-04-2011, 01:08 PM   #12
bullet1968
Lifetime Member
 
bullet1968's Avatar
 
Join Date: Feb 2010
Location: Australia
Posts: 4,255
Thanks: 158
Thanked 651 Times in 621 Posts
Default

Thanks LP.....I have learnt something more...I never knew that...I always associated it with particles....interesting.
__________________
bullet1968

"A Darkness at Sethanon", a book I aspire to model some of the charcters and scenes
bullet1968 is offline   Reply With Quote
New Thread

« Previous Thread | Next Thread »

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
Maya Windows File corrupted on Mac cyranovb Technical Issues 4 14-07-2011 12:04 PM
Maya 2011 Extrude Issue clearairstudios Technical Issues 10 08-04-2011 02:49 PM
Lofting in Maya vs. 3DSMax oliverw Maya Basics & Newbie Lounge 3 11-03-2011 06:33 PM
New User. Sketchup editiing in Maya KaisoArt Maya Basics & Newbie Lounge 4 02-03-2011 05:56 AM
Maya not keyframing properly! Gotmilk0112 Maya Basics & Newbie Lounge 2 01-02-2011 07:15 PM

1 Month

$34

Month-to-month billing
$34/month
Unlimited access to all videos
Project files to download
Easy to cancel at anytime
 
 

3 months

$87

Billing every 3 months
$29/month
Unlimited access to all videos
Project files to download
Easy to cancel at anytime
Save $5 per month or $15 in total compared to monthly billing with this package.

12 months

$288

Billing every 12 months
$24/month
Unlimited access to all videos
Project files to download
Easy to cancel at anytime
Save $10 per month or $120 in total compared to monthly billing with this package.

Your plan will automatically renew. You can cancel at any time via your PayPal account to avoid being charged again.

You can view the FAQ on our video plans here. You can contact us directly here. By clicking one of the buttons above, you agree to our Terms and Privacy Policy.