Rotating Refrence Frame

Ali12345 · July 31, 2017, 06:35

Hi! I am finding rotation based coefficients of submarine using rotating reference frame for steady simulation. The domain is circular containing submarine and I want to rotate submarine with 2 m/sec velocity (V=r*w where r=40m and w=0.05 rad/sec). At inlet of domain a linear profile of velocity is generated (max at outer radius and minimum at inner radius) so that the net velocity at centerline is 2 m/sec. What should be the angular velocity of reference frame?? Picture of domain is attached.

ghorrocks · July 31, 2017, 20:20

Isn't it 0.05 rad/s?

Ali12345 · August 1, 2017, 01:08

Yes it should be 0.05 rad/sec.How can I incorporate coriolois and centripetal force effect on rotating submarine

ghorrocks · August 1, 2017, 01:28

When you define the axis of rotation and the rotation speed then CFX automatically applies coriolis and centripetal effects to the rotating frame of reference.

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July 31, 2017, 20:20		#2
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,716 Rep Power: 143	Isn't it 0.05 rad/s?

August 1, 2017, 01:08		#3
Ali12345 New Member Bukhari Join Date: Mar 2017 Posts: 8 Rep Power: 9	Yes it should be 0.05 rad/sec.How can I incorporate coriolois and centripetal force effect on rotating submarine

August 1, 2017, 01:28		#4
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,716 Rep Power: 143	When you define the axis of rotation and the rotation speed then CFX automatically applies coriolis and centripetal effects to the rotating frame of reference.