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Showing results 1 to 7 of 7 Search took 0.00 seconds. Search: Posts Made By: mmengineer

Forum: Main CFD Forum September 25, 2020, 12:07

Replies: 18 Time step size has influence on results? CFL < 1 Views: 1,400 Posted By mmengineer Hello Filippo, why do you think i have to resolve... Hello Filippo, why do you think i have to resolve the boundary layers very fine to compute the drag coefficient? I guess you mean i have to reach a y+ value between 5 and 30 or at the best around 1. ...

Forum: Main CFD Forum September 11, 2020, 06:17

Replies: 18 Time step size has influence on results? CFL < 1 Views: 1,400 Posted By mmengineer Hi Arjun, thanks for your suggestions. I did... Hi Arjun, thanks for your suggestions. I did a little study with a simple geometry in 2D, using implicit and explicit vof scheme with varying time step sizes and the body weighted force option....

Forum: Main CFD Forum September 2, 2020, 06:38

Replies: 18 Time step size has influence on results? CFL < 1 Views: 1,400 Posted By mmengineer I´m not sure if it makes me feel better :D ... I´m not sure if it makes me feel better :D Okay, but how did you handle that problem ? Because now I can´t be sure with which time step size my results a right

Forum: Main CFD Forum September 2, 2020, 06:32

Replies: 18 Time step size has influence on results? CFL < 1 Views: 1,400 Posted By mmengineer i´m using ansys fluent 2020 i´m using ansys fluent 2020

Forum: Main CFD Forum September 2, 2020, 06:23

Replies: 18 Time step size has influence on results? CFL < 1 Views: 1,400 Posted By mmengineer I´m doing transient simulation. My case is an... I´m doing transient simulation. My case is an open channel with a bridge inside of which I want to get the drag force. The water is flowing at the bridge with 5 m/s. Since the flow regions around...

Forum: Main CFD Forum September 2, 2020, 04:54

Replies: 18 Time step size has influence on results? CFL < 1 Views: 1,400 Posted By mmengineer Thanks for your reply, here are same details of... Thanks for your reply, here are same details of my setup: It´s a 3D VOF Multiphase Simulation with water and air as fluids. Open Channel Wave BC with free surface option and k-omega SST Turbulence...

Forum: Main CFD Forum September 1, 2020, 04:38

Replies: 18 Time step size has influence on results? CFL < 1 Views: 1,400 Posted By mmengineer Time step size has influence on results? CFL < 1 Hello everyone, i´m simulating an Open-Channel problem and i´m trying to get Drag values of bridge inside that open channel. The simulations works and i´m getting results for the Drag coefficient....

Showing results 1 to 7 of 7

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