CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > CFD Online Community > Site Help, Feedback & Discussions

InterFoam hydro turbine

Register Blogs Members List Search Today's Posts Mark Forums Read

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   June 4, 2021, 09:44
Unhappy InterFoam hydro turbine
  #1
New Member
 
Gennaro
Join Date: Jun 2021
Posts: 1
Rep Power: 0
Genn97 is on a distinguished road
Hi guys, I've been trying to simulate a multiphase hydraulic turbine for months with interFoam. I need someone who has experience for my thesis. My boundary conditions are as follows:
alpha.water
inlet fixed value uniform 1
outlet inletOutlet inletValue uniform 0 value uniform 0
wall zeroGradient
AMI1 and AMI2 cyclicAMI
symmetry on the back and front ( I 'm simulate 2D case for now)

k,omega are turbulente inlet and wall functions with an arbitrary value (the simulation does not go well in the laminar conditions)

for U i have:
inlet fixedValue (10.74 0 0)
outlet pressureInletOutletVelocity
wall no slip

fo p_rgh:
inlet fixedFluxPressure
outlet fixedValue uniform 0
wall fixedFluxPressure

For the preliminary study I use MRF with 1000 rpm.
The turbine starts full of air and the water begins to enter, already here I have the first problems because the air reaches very high speeds and crashes the simulation. I tried initializing with turbine full of water but nothing done. I tried to initialize with 0 rpm but still the timestep is really low (1e-7 on average).I've tried various meshes but not even the best one seems to work well, with 66 non-orthogonality and 0.7 skewness.
I hope someone will give me some advice, thanks!
Genn97 is offline   Reply With Quote

Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Hydro Turbine 2D Modeling Sukh FLUENT 1 November 4, 2020 02:52
OpenFoam 4.1: interDyMFoam LES Simulation for hydro turbine in river pi__sec OpenFOAM Running, Solving & CFD 13 July 19, 2017 05:08
Pico Hydro Turbine CFD Modelling Renado.19 FLUENT 0 January 23, 2017 17:21
CFD Expert for Hydro Turbine Runner profiles hydroelectricpro Main CFD Forum 2 February 17, 2010 02:17
Help! How to find efficiency of hydro turbine? Sanjay Jain FLUENT 0 May 9, 2008 13:09


All times are GMT -4. The time now is 18:57.