Here is what's up. I am trying to simulate a vertical
turbine. Basically like one of those cup things that you see on a
weather station where one side is less drag the other so it spins
in the breeze. I under stand that Floworks can not spin an item in
regards to a wind speed so I have setup a standard rpm (100) and
run a set of wind speeds. The idea here is that when the torque
crosses zero than you have the wind speed that will spin the unit
at that rpm. By running a series of rpm you can get a graph. The
next assumption that I make is that as the wind speed increases
that the torque changes signs. I have run this simulation on
standard fan shapes like the sample from there class and everything
works great. As soon as I change to a vertical design the sign
never changes. The values are out of sink and there is never a
shift point.
Any help, any ideas, at all will be greatly appreciated. I have been fighting this for over a month now. I told the students that it would be a great item to model because it would be so easy to test.
I am doing it as an internal flow with a tube as a wind tunnel. I apply a velocity from one end and call the other walls of the wind tunnel environmental pressure openings. I have setup the rotational domain. I have tried everything that I can think of.
Help.
Bill
KF6SYH@Yahoo.com

Any help, any ideas, at all will be greatly appreciated. I have been fighting this for over a month now. I told the students that it would be a great item to model because it would be so easy to test.
I am doing it as an internal flow with a tube as a wind tunnel. I apply a velocity from one end and call the other walls of the wind tunnel environmental pressure openings. I have setup the rotational domain. I have tried everything that I can think of.
Help.
Bill
KF6SYH@Yahoo.com

what version/service pack are you running?
can you attach the model?
Rich.