🎉Community Raffle - Win $25

An exclusive raffle opportunity for active members like you! Complete your profile, answer questions and get your first accepted badge to enter the raffle.
Join and Win

Reference Frame - Mesh Motion

User: "Junta_20361"
New Altair Community Member
Updated by Junta_20361

Hello experts,

 

I am working with AcuSolve tutorial Acu-5000 and Acu 5001. which are using the same model, difference is one is steady state/reference frame and other is transient/mesh motion.

 

I am wondering which one should i use to represent the rotation of fan-blades? reference frame or mesh motion? and why?

(image below)

 

Thank in advance!

  image.png.9cda0bcae772e26ce40a3b97f3b0aa5f.png

 

 

Find more posts tagged with

Sort by:
1 - 2 of 21
    User: "acupro"
    Altair Employee
    Updated by acupro

    They both represent rotation.  The reference frame is for steady-state, and the mesh rotation is for transient.  While in some cases the steady-state assumption with reference frame is very good, typically the accuracy with mesh motion will be better.  Of course, the transient simulation takes much more run-time, so that is the trade-off - increased accuracy at the cost of longer runtime.

    User: "Junta_20361"
    New Altair Community Member
    OP
    Updated by Junta_20361

    They both represent rotation.  The reference frame is for steady-state, and the mesh rotation is for transient.  While in some cases the steady-state assumption with reference frame is very good, typically the accuracy with mesh motion will be better.  Of course, the transient simulation takes much more run-time, so that is the trade-off - increased accuracy at the cost of longer runtime.

     

    Very detail answer.

    Thank you very much! :D/emoticons/default_biggrin.png' srcset='/emoticons/biggrin@2x.png 2x' title=':D' width='20' />