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Showing results 1 to 6 of 6 Search took 0.00 seconds. Search: Posts Made By: ghorrocks

Forum: CFX August 16, 2017, 08:00

Replies: 13 time step and # of coefficient loops Views: 6,763 Posted By ghorrocks If the body is rigid, and its motion is just... If the body is rigid, and its motion is just translation and rotation, then this is not FSI and should be modelled as a rigid body motion. You only need FSI if the body deforms due to the forces...

Forum: CFX August 16, 2017, 06:24

Replies: 13 time step and # of coefficient loops Views: 6,763 Posted By ghorrocks Coupling/stagger iterations are used in FSI... Coupling/stagger iterations are used in FSI simulations. Are you intending to do a FSI simulation? If you just need moving mesh you do not need FSI and the simulation becomes much easier.

Forum: CFX September 28, 2012, 07:33

Replies: 13 time step and # of coefficient loops Views: 6,763 Posted By ghorrocks To clarify - increasing the number of time steps... To clarify - increasing the number of time steps (ie smaller time steps) with 3-5 coeff loops per iteration is usually a better approach then larger time steps with more coeff loops. I think that is...

Forum: CFX September 27, 2012, 07:47

Replies: 13 time step and # of coefficient loops Views: 6,763 Posted By ghorrocks Doing even less coeff loops per time step is good... Doing even less coeff loops per time step is good for temporal resolution (ie fine time steps) but in most cases not optimal. Also be aware that I understand the second order components of the...

Forum: CFX September 26, 2012, 08:08

Replies: 13 time step and # of coefficient loops Views: 6,763 Posted By ghorrocks The tolerance is how accurate you are happy to... The tolerance is how accurate you are happy to have that result. Are you doing a quick design check - maybe 20%. Want a good answer - maybe 5%. Need high accuracy - maybe 1%. You have to choose for...

Forum: CFX September 24, 2012, 22:06

Replies: 13 time step and # of coefficient loops Views: 6,763 Posted By ghorrocks 1. Time step dependance check - run a simulation,... 1. Time step dependance check - run a simulation, then do it again with half the time step size. If the two simulations are the same within a toelrance you are happy with then you are finished. If...

Showing results 1 to 6 of 6

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