|February 11, 2013, 14:03||
Modeling a rotating vertical axis stream turbine
Join Date: Dec 2012
Posts: 3Rep Power: 4
Hi guys, new to the forum and after digging around to find answers to my problems i am yet to find a definite answer, so i make a thread
I'm doing my 3rd year dissertation on modeling a Vertical Axis Tidal Turbine (VATT) in FLUENT. What i am looking at is the efficiency drop/rise when more blades are added to the arrangement (Darrieus style VATT) for example 3 airfoils compared to 4,5,6 etc.
Now i have my solidworks model of a simplified VATT imported into ANSYS Workbench, then placed inside a cylinder and the the cylinder inside a larger control volume. The model is meshed appropriately and set up using a sliding mesh arrangement with the cylinder 'fluid' volume rotating at a set angular velocity hence turning the turbine.
My many questions lie in the running solutions, obviously to model the turbine rotating over time i have to use a transient method. questions:
1) Do i first have to run a steady state solution to convergence and then proceed to a transient model (with say 50 iterations per time step?)
2) Do i record lift, drag, and moment coefficients of the turbine as a whole? and in what axes?
Thank you for your time, if you need anymore information or pictures i can provide them. Thanks again
|Thread||Thread Starter||Forum||Replies||Last Post|
|State of the Art in CFD for wind turbine modeling||SET_WIND||Main CFD Forum||0||October 9, 2012 06:01|
|vertical axis wind turbine: Steady State? Chart?||Jbc||ANSYS||0||September 5, 2012 17:34|
|Vertical axis wind turbine in NUMECA||ArslanOZCAN||NUMECA||2||July 21, 2011 05:04|
|Water turbine CFD modeling||Peter||Main CFD Forum||6||April 22, 2010 22:50|
|rotating domain in rotating domain, different axis||Robert Stringer||CFX||3||December 4, 2006 08:04|