digitalaayush Posted October 24, 2012 Share Posted October 24, 2012 (edited) Hello Everyone I am working on a Train Smoke Simulation which I have generated from the Billowy Smoke Pyro Shelf Tool. I have used a chimney object as a colliding geometry to get the curve of the smoke coming out from the chimney of the train. But the collision geometry dosen't seems to be working correctly. Can anyone help me in generating a smoke from the moving emmiter while colliding with the collision geometry? Any kind of help will be highly appreciated. Thanks... Train_Smoke.hipnc Edited October 24, 2012 by digitalaayush Quote Link to comment Share on other sites More sharing options...
gui Posted October 24, 2012 Share Posted October 24, 2012 Hello, The problem is that you created an emitter that emitts outside the chimney. To make it just inside the chimney, you will probably need to decrease the division (and tweak the emitter), and that will increase your sim time. The easier way is to increase the chimney size to encompass the emitter smoke. Here everything is working now. I don´t understand well how the source sop works to convert sop geo to volume. It always makes everything big. I usually create a volume and make changes in the vop volume, and than plug it in the source volume. Hope it helps. Train_Smoke.hipnc Quote Link to comment Share on other sites More sharing options...
Filipp Elizarov Posted October 24, 2012 Share Posted October 24, 2012 Hello, The problem is that you created an emitter that emitts outside the chimney. To make it just inside the chimney, you will probably need to decrease the division (and tweak the emitter), and that will increase your sim time. The easier way is to increase the chimney size to encompass the emitter smoke. Here everything is working now. I don´t understand well how the source sop works to convert sop geo to volume. It always makes everything big. I usually create a volume and make changes in the vop volume, and than plug it in the source volume. Hope it helps. Trying to Turn off Minimum distance parameter and Out feather length in SDF from geometry tab and decrease div.size in Setting tab from .1 to 0.05 and your source will looks very similar with the original geometry. Quote Link to comment Share on other sites More sharing options...
digitalaayush Posted October 24, 2012 Author Share Posted October 24, 2012 Hey Guilherme, Thanks for highlighting my mistake. I think I found the solution of collision problem. But I am still unable to get the thick smoke that would get out from the smoke chimney of a train. And also the smoke curve that i am getting now is no where near to the smoke coming out from a smoke chimney in the reference below http://www.youtube.com/watch?feature=player_embedded&v=qmJdCpEPIWs Quote Link to comment Share on other sites More sharing options...
gui Posted October 24, 2012 Share Posted October 24, 2012 Thanks for pointing that Filipp. To mimic the traing, I think you should start with high velocity (from source) and then add a high drag force to reduce the velocity. Buoyancy should be short, so the smoke don´t rise too much. See the attached file, it´s not done, but its a start. There are some problems, I think with the source velocity. I don´t think the collision is adding any detail. You should try taking the emitter up, and taking the collision obj. Since the source velocity is high, the smoke don´t collide much with the chimney. Sorry for my bad english, need time to study it more! Train_Smoke.hipnc Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.