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Problem on understanding documentation sentence.
Posted Mar 20, 2012, 11:07 p.m. EDT Geometry 1 Reply
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Dear all,
I am facing difficulty on reading the model library documentation and hope can have your advice
"The movement of the valve is described with an analytic expression pin, which returns
the value of one in the area corresponding to the valve pin and zero elsewhere."
This sentence refer to control the valve open or close. but why i cannot see the valve open or close, i means moving the line or not?
as the line still there.
I attache the file for your information
I am facing difficulty on reading the model library documentation and hope can have your advice
"The movement of the valve is described with an analytic expression pin, which returns
the value of one in the area corresponding to the valve pin and zero elsewhere."
This sentence refer to control the valve open or close. but why i cannot see the valve open or close, i means moving the line or not?
as the line still there.
I attache the file for your information
Attachments:
1 Reply Last Post Mar 21, 2012, 2:29 a.m. EDT
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Posted:
1 decade ago
Hi
If you read more carefully above, you will see that the pin is simulated by a "very viscous fluid" that is moving in and out, the pin shape is there only for ease of geometry generation and to show where it is.
The trick is that the material is defined by the variable "eta" and eta is driven by the "pin" motion
--
Good luck
Ivar
If you read more carefully above, you will see that the pin is simulated by a "very viscous fluid" that is moving in and out, the pin shape is there only for ease of geometry generation and to show where it is.
The trick is that the material is defined by the variable "eta" and eta is driven by the "pin" motion
--
Good luck
Ivar