|
[Sponsors] |
![]() |
![]() |
#1 |
New Member
Turhan
Join Date: Sep 2022
Posts: 16
Rep Power: 3 ![]() |
Hello everyone,
I was doing a pipe flow simulation using pimpleFoam. This gave realistic results and it went well. Since I wanted to add particles I ran the same simulation with DPMFoam. This made the flow insanely strong, which is impossible. I assumed that the added particles caused this problem, so I ran it again whilst turning off the kinematicCloudProperties, this did not change the results. In the attachments I added two pictures, first one shows the steady state result with pimpleFoam, second one with DPMFoam. I have an inlet and jet patch which have a 7m/s flow through them, and the outlets are zeroGradient. For the pressure I use fixedFluxPressure at the inlet and jet, this calculates the pressure at these patches in order to reach the required velocity. At the outlets I have a fixed pressure of 0 bar. By applying this on pimpleFoam, I get a simulation that shows a maximum velocity of 9.6m/s, which is realistic. The second simulation gets a maximum velocity of 37m/s, which should be impossible. I was wondering why the results in DPMFoam aren't realistic and how to solve this. I thought that DPMFoam also used the pimple algorithm in order to solve the fluid dynamics. |
|
![]() |
![]() |
![]() |
![]() |
#2 |
New Member
Tommaso Pernatsch
Join Date: Jul 2023
Posts: 4
Rep Power: 3 ![]() |
Hi Turhan, can you share your cloudProperties file and the OpenFOAM version you are currently working on?
|
|
![]() |
![]() |
![]() |
Tags |
dpmfoam, lagrangian, pimplefoam, pipe flow, unrealistic |
|
|
![]() |
||||
Thread | Thread Starter | Forum | Replies | Last Post |
Use of the result from the coarser mesh as the initial condition for the finer mesh | newface5150 | STAR-CCM+ | 5 | April 18, 2023 15:27 |
numerical result for T-beam is different from Analytical result why? | hussan | Structural Mechanics | 5 | August 2, 2022 15:56 |
postprocessing result pressure in the inlet using simplefoam | rjomega | OpenFOAM Verification & Validation | 0 | March 20, 2022 02:39 |
Unrealistic results using DPMFoam | Mojtaba.a | OpenFOAM Running, Solving & CFD | 4 | January 24, 2015 10:28 |
Comparison the airfoil 0012 experimental result and simulation result | harrislcy | FLUENT | 30 | August 29, 2013 10:27 |