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oscillating flow

Posted 1 lug 2016, 09:07 GMT-4 Fluid & Heat Version 5.2 2 Replies

Ben Hulbert
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Hello,

I would like to set up an inlet that produces oscillating flow (going from positive values to negative ones) in my model. When I add the expression

2*sin(4*pi*t[1/s])

to the inlet velocity field I get out only the absolute value of that expression. See the attached picture.
How can I get both positive and negative values for velocity at an inlet?

Thanks,
Ben

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2 Replies Last Post 1 lug 2016, 09:22 GMT-4
Jeff Hiller COMSOL Employee

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Posted: 8 years ago 1 lug 2016, 09:19 GMT-4
Hello Ben,
You are plotting the "Velocity magnitude".
Jeff
Hello Ben, You are plotting the "Velocity magnitude". Jeff
Ben Hulbert
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Posted: 8 years ago 1 lug 2016, 09:22 GMT-4
I'm glad it was something so simple.

Thanks for the prompt help!
I'm glad it was something so simple. Thanks for the prompt help!

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