Calculating Torque in 6DoF simulation

erickmartinez · November 24, 2020, 03:51

Good day everyone! It is my first post of I hope many, since I hope to be an active member in these forums from hereon!

I am a graduate student working in the Large Eddy Simulation of a Wave Energy Converter. Currently I am preparing the 2-D simulation with k-epsilon turbulence model. The rotor (consisting of 3 hydrofoils) is driven by the flow, so it uses the 6DoF dynamic mesh solver for its motion. It calculates the angular velocity but I am wondering if there is any way to solve for the torque of the rotor since I have not been able to find much online?

I have attached a gif of the current simulation for visual reference. If anybody could help I would greatly appreciate it!

erickmartinez · November 24, 2020, 03:57

Here is a link to the gif since it did not upload as an animation!

https://media.giphy.com/media/uDhiOb...qOrz/giphy.gif

tomf · November 25, 2020, 05:22

Hi,

You can just use the forces functionObject.

It will also output moments, so you should look at the Z-component of the moments for your torque.

Cheers,
Tom

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November 24, 2020, 03:57		#2
erickmartinez New Member Erick D. Martinez Join Date: Oct 2020 Location: Texas Posts: 29 Rep Power: 6	Here is a link to the gif since it did not upload as an animation! https://media.giphy.com/media/uDhiOb...qOrz/giphy.gif

November 25, 2020, 05:22		#3
tomf Senior Member Tom Fahner Join Date: Mar 2009 Location: Breda, Netherlands Posts: 647 Rep Power: 32	Hi, You can just use the forces functionObject. It will also output moments, so you should look at the Z-component of the moments for your torque. Cheers, Tom