Please could someone guide me as to where I can find any tutorials or worked examples for modelling the plasma flow in Fluent.

I have drawn my Gambit model and meshed it with all the relavent regions, and exported it to Fluent.

I am having difficulty with the Fluent aspect as I do not have much experience with this.

I goal is to show the plasma flow once it leaves the nozzle.

I would be very grateful for any assistance anyone can give.

Thanks

Steve

Do all the tutorials in volume 1 of the tut manual.

I have 6 years experience in Plasma Jets and did my PHD on it. First of all when meshing the geometry make the grid coarse with a maximum of 40000 cells. After entering all the necessary parameters run the simple K-epsilon model with default settings. After convergence is reached change over to higher order discritization and you should get some good results.

Rob

In this simulation you need to track the particles from the Plasma jet. Make sure you have particle tracking and animation features switched on.

Thanks for your help and advise Rob,it is much appreciated.

I am still having a few problems however with the zones that I have set I don't think what I have done is correct..

I have a 3D cylinderical Nozzel.

With a outer barrel of dimensions 100x80mm and an inner nozzel of 101x8mm I have specified the inlet as a velocity inlet and the out barrel wall as a pressure-outlet. Is this correct and do I need to specifiy anything else.

If I could send you my Gambit file so that you can check what I have done I would be very grateful.

Steve

For the time being I do not have access to any of the CFD software but will be back in my office in 2 weeks. I can guide you what to do. From what I can understand your geometry should have to cylinders one inner and the other outer.

One side of the small cylinder is specified as the Vel Inlet and other as a Wall. Set both cylinderical tubes as pressure boundaries with the value for gauge pressure to be atmospheric pressure. Export Mesh and read in Fluent.

In fluent after specifying the parameters run the simple K-epsilon model to first order then check results and reiterate with higher order.

I hope this helps.

Rob

Thanks very much for your help Rob,

I am finally getting something to happen.

Now I hope I can get the results I want.

Steve

Dear Rob

I would like to start doing simulation of plasma jet to support my experiments. I am using CFX for my simulations but not sure whether I can use the same for Plasma jet simulation or i have to switch over to fluent which of course is new to me. Since I am new, I need guidance for doing this modeling. I would really be grateful if i can get some guidance from you. If you wish I can write about my problem in more detail. Kindly provide me with your email id if possible.

Thanks n Regards Debabrat

[djillali2009]

Originally Posted by Rob
;144037

For the time being I do not have access to any of the CFD software but will be back in my office in 2 weeks. I can guide you what to do. From what I can understand your geometry should have to cylinders one inner and the other outer.

One side of the small cylinder is specified as the Vel Inlet and other as a Wall. Set both cylinderical tubes as pressure boundaries with the value for gauge pressure to be atmospheric pressure. Export Mesh and read in Fluent.

In fluent after specifying the parameters run the simple K-epsilon model to first order then check results and reiterate with higher order.

I hope this helps.

Rob

think you Mr Rob for your helps and i hope that you help me how to simulate plasma jet in 3D using LES method

reguards

[karun26]

Thanks for the info. Rob. Could you please help me with the Plasma modelling in Fluent ? I need to know how to define properties of Argon Plasma in fluent. The plasma i'm going to use is at 10000 K .