CFD Online Logo CFD Online URL
Home > Forums > STAR-CCM+

Propeller airplane

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

LinkBack Thread Tools Display Modes
Old   May 18, 2011, 03:53
Default Propeller airplane
New Member
Join Date: May 2011
Posts: 6
Rep Power: 8
satriani is on a distinguished road
I have to run a simulation of a propeller driven airplane at takeoff, i read the tutorial on how to simulated the rotation of a part (in my case the propeller) with rigid body motion and the tutorial in wich one has the boat and wants to simulate its motion with the 6-DOF model. In my case how i can use both the 6-DOF to study the motion of the airplane and rigid body motion to simulated the rotation of the propeller? From the physics model selection it seems i can only use one of them... thanks!
satriani is offline   Reply With Quote

Old   May 20, 2011, 12:45
Join Date: Aug 2009
Posts: 93
Rep Power: 10
nomad is on a distinguished road
You don't need to use the DFBI model.

Assign the prop to a rotating region with an interface (I assume you know how to setup interfaces?) to the non-rotating region to which the airplane belongs. Make sure the prop is detached from the airplane by making a thin cut between the two.

You only need one physics model, either MRF or RBM, which will allow you to assign an rpm to the rotating region, and a freestream velocity to the non-rotating region.

Use the steady state MRF model (faster convergence) first until converged, then turn on the implicit unsteady RBM model (slower convergence) with an appropriate time-step (depending on mesh resolution and rpm) for a couple of revolutions until the wake is fully developed. The RBM model gives a better torque-thrust result than the MRF for Re<1e6 cases, given the right mesh resolution of course.
nomad is offline   Reply With Quote

Old   May 23, 2011, 03:12
New Member
Join Date: May 2011
Posts: 6
Rep Power: 8
satriani is on a distinguished road
I've made the two regions detached and set the RBM model, but know i want to simulate the motion of the airplane. To do this i've create another physics with the 6DOF model enabled but i don't know what to do next. Anyone can help me? thank you
satriani is offline   Reply With Quote


Thread Tools
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 On
Pingbacks are On
Refbacks are On

Similar Threads
Thread Thread Starter Forum Replies Last Post
Propeller calculation toil CFX 15 May 22, 2017 04:06
Modelling a propeller tomg STAR-CCM+ 4 April 28, 2011 17:22
Modelling airplane fuselage with propeller thepassenger FLUENT 1 November 8, 2010 23:19
a propeller 2 way fsi kantored CFX 9 April 11, 2007 14:51
How to setup an airplane propeller? HSeldon FLUENT 1 October 18, 2006 01:59

All times are GMT -4. The time now is 05:03.