# 6dof

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 February 14, 2020, 10:33 6dof #1 New Member   Freddie Romero Join Date: Feb 2020 Location: Colombia Posts: 2 Rep Power: 0 Hello everybody. I am new on CFD, before i has work in fluent in some simulations very easy. But now i am working in a Michell-Banki turbine simulation I have multiphase simulation with 6 DOF. Actually i know how to configure the set up of the simulation, but now i want introduce the electric charge to my simulation; that mean that in the rotor a reactive moment should back away and reduce the rotational speed. Any one who know how do it and could help me ? Thanks In advance PEACE

 February 14, 2020, 13:33 Torque #2 Senior Member     Vinerm Join Date: Jun 2009 Location: Nederland Posts: 2,946 Blog Entries: 1 Rep Power: 35 If the value of the reaction is known, either as a constant or as a function of known variables, then you can apply it. This needs to be applied as a moment within the UDF. Direction must be opposite to that of rotation. __________________ Regards, Vinerm PM to be used if and only if you do not want something to be shared publicly. PM is considered to be of the least priority.

 February 17, 2020, 14:31 #3 New Member   Freddie Romero Join Date: Feb 2020 Location: Colombia Posts: 2 Rep Power: 0 I did it, and still the turbine increase the rotational speed. I want to know the behaviour in my turbine in accordance to the velocity inlet. If you want, I could take some pictures to show you that the rotational speed is increasing and the fluid behaviour not correspond to waited

 February 17, 2020, 14:53 Debugging #4 Senior Member     Vinerm Join Date: Jun 2009 Location: Nederland Posts: 2,946 Blog Entries: 1 Rep Power: 35 Usually, the best way to debug something like this is to use the asymptotes, i.e., apply a very high reaction moment and then observe if the speed is controlled or not. If that does not happen, then either the moment is not being applied at the correct zone or there is something very wrong with the setup. __________________ Regards, Vinerm PM to be used if and only if you do not want something to be shared publicly. PM is considered to be of the least priority.

 Tags 6dof, reactive moment

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