ray@ketch.cis.ohio-state.edu (william c ray) (06/01/89)
I know this is a little off of the beaten (ray-tracer) path for this group, but has anyone out there done any work with graphical simulations of turbulence? Im trying to come up with a model for convection and convective erosion of a density gradient in a fluid, and was hoping that a good turbulence model might be somewhat enlightening in terms of how to apply random perturbations, or some such. (no this doesn't belong on Sci.boring, I am interested in making pretty pictures of the phenomenon, sort of like shadowgraphs, not simply a mathematical 1d formula) thanx for any info... Will ray@cis.ohio-state.edu BTW, if anyone requested VW Beetle car files from me, and hasn't gotten them, please let me know, my mailer threw up on someones return address, and I'm not sure if what I sent got where it was supposed to or not.
foo@titan.rice.edu (Mark Hall) (06/01/89)
In article <50540@tut.cis.ohio-state.edu> william c ray <ray@cis.ohio-state.edu> writes: >I know this is a little off of the beaten (ray-tracer) path for this group, but >has anyone out there done any work with graphical simulations of turbulence? >Im trying to come up with a model for convection and convective erosion of > >ray@cis.ohio-state.edu See "An Image Synthesiser", by Ken Perlin, in Computer Graphics, Volume 19, no. 3. pp. 152-161. (1985 SIGGRAPH conference proceedings) - mark
cme@cloud9.Stratus.COM (Carl Ellison) (06/02/89)
In article <3357@kalliope.rice.edu>, foo@titan.rice.edu (Mark Hall) writes: > See "An Image Synthesiser", by Ken Perlin, in Computer Graphics, > Volume 19, no. 3. pp. 152-161. (1985 SIGGRAPH conference proceedings) It's on pp. 287-296 in my copy of the proceedings. --Carl Ellison UUCP:: cme@cloud9.Stratus.COM SNail:: Stratus Computer; 55 Fairbanks Blvd.; Marlborough MA 01752 Disclaimer:: (of course)
devroede@adobe.COM (Pete deVroede) (06/03/89)
In article <5405@cloud9.Stratus.COM> cme@cloud9.Stratus.COM (Carl Ellison) writes: >In article <3357@kalliope.rice.edu>, foo@titan.rice.edu (Mark Hall) writes: >> See "An Image Synthesiser", by Ken Perlin, in Computer Graphics, >> Volume 19, no. 3. pp. 152-161. (1985 SIGGRAPH conference proceedings) There was also some work by the people at Digital Productions on the subject. The only author I remember is Larry Yeager (hi Larry!) and I think it was in SIGGRAPH '86 or '87. It dealt mainly with the algo- rythm used for the simulation of Jupiter for the movie "2010". I haven't read it for a while, but I don't think Perlin's paper actually talks about *animating* the turbulence. Larry's does. (I might be wrong about Perlin's though). -- | Information is a parody of knowledge. Peter J. deVroede | | Knowledge is a parody of wisdom. decwrl\! adobe!devroede | | Wisdom is a parody of truth. sun/ or | | Oscar Wilde (?) devroede@adobe.com |
spl@mcnc.org (Steve Lamont) (06/03/89)
In article <889@adobe.UUCP> devroede@adobe.UUCP (Pete deVroede) writes: <In article <5405@cloud9.Stratus.COM> cme@cloud9.Stratus.COM (Carl Ellison) writes: <>In article <3357@kalliope.rice.edu>, foo@titan.rice.edu (Mark Hall) writes: <>> See "An Image Synthesiser", by Ken Perlin, in Computer Graphics, <>> Volume 19, no. 3. pp. 152-161. (1985 SIGGRAPH conference proceedings) < <There was also some work by the people at Digital Productions on the <subject. The only author I remember is Larry Yeager (hi Larry!) and <I think it was in SIGGRAPH '86 or '87. It dealt mainly with the algo- <rythm used for the simulation of Jupiter for the movie "2010". I haven't Craig Upson did a lot of work on that, too. He's now at Stellar Computer. (Hi Craig!) I think he might have been a collaborator with Yeager but I can't say for certain. All of my SIGGRAPH proceedings are still packed away from my move. If anyone is desparate for the references, EMAIL me privately and I'll play 3 card monte with my box collection until I find them. :-) -- spl Steve Lamont, sciViGuy EMail: spl@ncsc.org North Carolina Supercomputing Center Phone: (919) 248-1120 Box 12732/RTP, NC 27709
foo@titan.rice.edu (Mark Hall) (06/05/89)
In article <4626@alvin.mcnc.org> spl@mcnc.org.UUCP (Steve Lamont) writes: >In article <889@adobe.UUCP> devroede@adobe.UUCP (Pete deVroede) writes: ><In article <5405@cloud9.Stratus.COM> cme@cloud9.Stratus.COM (Carl Ellison) writes: ><>In article <3357@kalliope.rice.edu>, foo@titan.rice.edu (Mark Hall) writes: ><>> See "An Image Synthesiser", by Ken Perlin, in Computer Graphics, ><>> Volume 19, no. 3. pp. 152-161. (1985 SIGGRAPH conference proceedings) >< ><There was also some work by the people at Digital Productions on the ><subject. The only author I remember is Larry Yeager (hi Larry!) and ><I think it was in SIGGRAPH '86 or '87. It dealt mainly with the algo- ><rythm used for the simulation of Jupiter for the movie "2010". I haven't The reference is (Perhaps with correct page numbers this time ;^) Yaeger, Larry, Upson, Craig, and Myers, Robert, (1986), ``Combining Physical and Visual Simulation - Creation of the Planet Jupiter for the Film "2010"'', {\em Computer Graphics}, Volume 20, No. 4, pp. 85-93. - mark
silva@c3.PLA.CA.US (Joe Silva) (06/09/89)
Try looking into Cellular Automata Simulations of Turbulance...
eugene@eos.UUCP (Eugene Miya) (06/10/89)
In article <134@c3.PLA.CA.US> silva@c3.UUCP (Joe Silva) writes: >Try looking into Cellular Automata Simulations of Turbulance... Be warned that much of the work in this area IS NOT going into CA. Depends is you want to draw simple pictures or understand science. Another gross generalization from --eugene miya, NASA Ames Research Center, eugene@aurora.arc.nasa.gov resident cynic at the Rock of Ages Home for Retired Hackers: "You trust the `reply' command with all those different mailers out there?" "If my mail does not reach you, please accept my apology." {ncar,decwrl,hplabs,uunet}!ames!eugene Live free or die.