how to apply a radial force on particles ?

Submitted by pain08 on Sat, 07/17/2021 - 17:52

hello everyone i am trying to apply a radial electrostatic force on particles in the documentation we can use only x y z axis but the force vectors are always pointing in a single direction i need them to be radial like applying constant stress to a cylinder and inclined if possible like using a conical electrode any tip is welcome thank you all.

pain08 | Thu, 07/22/2021 - 16:55

Hello Mr SHUBHAM thank you for your reply . i need the particles flow to be dependent on the efield and electric charge of the particles . the drag command is almost similar to the addforce command . if there's a way to make the electric field vectors radial feel free to share it and thanks again.

SHUBHAM AGARWAL | Fri, 07/23/2021 - 22:37

Hello
I could find an "efield" command, which applies a force due to an electric field along a specified vector. I think you need to calculated the radial vectors for your particle and apply the forces accordingly
You can find the details about the command on: https://www.cfdem.com/media/DEM/docu/fix_efield.html
Shubham

pain08 | Mon, 07/26/2021 - 20:02

thank you Mr Shubham i am already using this command and i gave the particle an electric charge i need the radial function i could not find anything to apply vectors in a 360 manner if you have some information please share it thanks again.