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Forum: CFX

June 13, 2011, 23:18

Replies: 6

double precision

Views: 4,519

Posted By ghorrocks

You cannot take a ratio of velocity and distance...

You cannot take a ratio of velocity and distance to give a meaningful number. The important ratio is of the largest and smallest important dimension, or the largest and smallest velocity or the...

Forum: CFX

June 13, 2011, 19:14

Replies: 6

double precision

Views: 4,519

Posted By ghorrocks

By default CFX uses SI units internally...

By default CFX uses SI units internally (m-kg-s-K). But it can use any internally consistent set of units.

What do you mean by "What you are use?"

Double precision generally adds about 50% to...

Forum: CFX

June 13, 2011, 07:05

Replies: 6

double precision

Views: 4,519

Posted By ghorrocks

I do not agree that you should use double...

I do not agree that you should use double precision for all calculations. I routinely use single precision for MEMS simulations where the domain size is around 10um by 10um.

The key thing is the...

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