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volume fraction problem in multiphaseEulerFoam |
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February 9, 2021, 09:25 |
volume fraction problem in multiphaseEulerFoam
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#1 |
New Member
Vishal
Join Date: Sep 2020
Posts: 6
Rep Power: 6 |
Code:
Create time Create mesh for time = 0 PIMPLE: Operating solver in PISO mode Reading field p_rgh Calculating face flux field phi.waterdia1 Selecting diameterModel for phase waterdia1: constant Calculating face flux field phi.waterdia2 Selecting diameterModel for phase waterdia2: constant Calculating face flux field phi.air Selecting diameterModel for phase air: constant Selecting dragModel for phase waterdia2: blended Selecting dragModel for phase waterdia2: SchillerNaumann Selecting dragModel for phase air: SchillerNaumann Selecting dragModel for phase waterdia1: blended Selecting dragModel for phase waterdia1: SchillerNaumann Selecting dragModel for phase waterdia2: SchillerNaumann Selecting dragModel for phase waterdia1: blended Selecting dragModel for phase waterdia1: SchillerNaumann Selecting dragModel for phase air: SchillerNaumann Selecting turbulence model type laminar Reading g Reading hRef Calculating field g.h No MRF models present DICPCG: Solving for pcorr, Initial residual = 1, Final residual = 4.39209e-06, No Iterations 27 time step continuity errors : sum local = 6.23677e-13, global = 6.57419e-14, cumulative = 6.57419e-14 Courant Number mean: 3.72941e-06 max: 0.000135479 Starting time loop Courant Number mean: 3.72941e-06 max: 0.000135479 deltaT = 1.2e-08 Time = 1.2e-08 PIMPLE: iteration 1 MULES: Solving for alpha.waterdia1 waterdia1 volume fraction, min, max = 2.982e-08 0 0.3 MULES: Solving for alpha.waterdia2 waterdia2 volume fraction, min, max = 1.988e-08 0 0.2 MULES: Solving for alpha.air air volume fraction, min, max = 1 0 1 Phase-sum volume fraction, min, max = 1 0 1 MULES: Solving for alpha.waterdia1 waterdia1 volume fraction, min, max = 5.964e-08 0 0.3 MULES: Solving for alpha.waterdia2 waterdia2 volume fraction, min, max = 3.976e-08 0 0.2 MULES: Solving for alpha.air air volume fraction, min, max = 1 0 1 Phase-sum volume fraction, min, max = 1 0 1 I am trying to analyze a water spray using this solver with air and two other phases for water with different droplet diameter. The source code of multiphaseEulerFoam is not completely executed and stops before zonePhaseVolumes.H (or Maybe it stops within the zonePhaseVolumes.H file). As I understood, the fluid.solve() command is executed. Because the print statement in multiphasesystem.c solve and then solveAlphas is printed. I am attaching my case folder as a zip file. Could you please help me understand the error or tell me why is the code stopping before the entire source code of multiphaseEulerFoam is executed? Thank you in advance. |
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February 9, 2021, 17:17 |
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#2 |
New Member
Vishal
Join Date: Sep 2020
Posts: 6
Rep Power: 6 |
I found the problem.
The sum of volume fractions was not 1 at the boundary. |
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September 15, 2021, 17:19 |
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#3 |
New Member
Eslam Reda
Join Date: Jun 2009
Posts: 19
Rep Power: 17 |
Boss
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Tags |
interfacialmodels, multiphaseeulerfoam, multiphasesystem, spray, volume fraction |
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