How to inject velocity into my explosion

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Hi all!

I'm searching for the way how to make explosion like the attached file shows.
For example: i have particles and i have explosion and i need to inject velocity of my particles into this explosion(and explosion i needed is without fire)

Any ideas?
Thank you all!)

Attachments:
explosion ref.png (374.9 KB)

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Convert you particles to a velocity volume and source into the pyro sim.
Use the Velocity Volume sop to get the v attribute into the velocity field.
Just disable density/temp.etc and only source Vel in DOPs
Showreel 2013 [vimeo.com]
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Thank you Jordan for your respond!

I tried to make it like you said, but i'm working with particles and pyro not a long time(
Can you show it in the project, please? I'm understand the concept how it should be, but in houdini i have some problems.
Thank you so much!

Attachments:
ext_test.hipnc (984.5 KB)

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Actually you can also do it with the fieldForce, and there is a nice example scene for you too!
http://www.sidefx.com/docs/houdini15.0/examples/nodes/dop/fieldforce/fieldforce [sidefx.com]
Showreel 2013 [vimeo.com]
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JordanWalsh
Actually you can also do it with the fieldForce, and there is a nice example scene for you too!
http://www.sidefx.com/docs/houdini15.0/examples/nodes/dop/fieldforce/fieldforce [sidefx.com]

I can't download this file(some technical issues)
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open the help in Houdini and go to
Getting Started > Examples > then look for a section called Field Force
Michael Goldfarb | www.odforce.net
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SideFX
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arctor
open the help in Houdini and go to
Getting Started > Examples > then look for a section called Field Force

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error.png (48.1 KB)

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uhhh. not sure whats going on there…

Its literaly the first thing that comes up when you search help for fieldForce

Go to Help/Contents (internel browser) then put this into the address bar:
http://localhost:48628/examples/nodes/dop/fieldforce/fieldforce [localhost]
Notice how this is the same as the web link apart from the start.
Showreel 2013 [vimeo.com]
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nope, still no result(
maybe if you'll have a time you can look at my project and add needed nodes? there is source for arrows and default explosion from shelf. It would be great to see this for my understanding.
thank you.
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JordanWalsh
uhhh. not sure whats going on there…

Its literaly the first thing that comes up when you search help for fieldForce

Go to Help/Contents (internel browser) then put this into the address bar:
http://localhost:48628/examples/nodes/dop/fieldforce/fieldforce [localhost]
Notice how this is the same as the web link apart from the start.

THreid to use velocity volume SOP but no result(

Attachments:
1.png (145.5 KB)
2.png (88.7 KB)
3.png (63.9 KB)

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Have a look at this file:

Attachments:
pyro_add_vel.hipnc.hip (1.0 MB)

Showreel 2013 [vimeo.com]
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JordanWalsh
Have a look at this file:

Thank you a lot for your help!
I have a question:
why you're taking sopgeometry node after pyro solver? I thought that we need to get our geometry path on input 1 of pyro solver

I've tried to use perticles velocity in my sim, but i had something like that, please take a look at this file

Attachments:
ext_test_126.hipnc (777.9 KB)

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My goal is the last two explosions from this video (https://vimeo.com/126576359) [vimeo.com]
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Dops isnt the same as sops. It dosent flow from top to bottom, so can be confusing. Im just attaching data to a force that gets evaluated by the solver.
Maybe have a read of this: http://www.tokeru.com/cgwiki/index.php?title=HoudiniDops [tokeru.com]

Some helpful stuff in there
Showreel 2013 [vimeo.com]
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Just had a quick look at your file.
Input 1 is for setup, honestly you dont need to touch it unless you need more fields for processing if you are doing some tricky effects.
You should be able to get everything you want from sourcing density temp and volume into the 4th input.
Use the shelf tools and see how they are setup.
Have a look at my example in the second dop network. Using this setup and probable some motion blur on the source, or custom streaking on the fast particles
Showreel 2013 [vimeo.com]
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