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Create bidirectional inlet
Posted Sep 4, 2014, 1:57 p.m. EDT 1 Reply
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Hi,
I would like to model an elastic chamber that will fill with CO2 gas based on a chemical reaction in the center of the chamber. The gas and also expended reactant (liquid) expand into a series of chambers equipped with baffles. There are also vents allowing the gas to escape when a certain pressure is reached.
The study is to understand how varying baffle dimensions and path lengths affects the inflation of the balloon as a function of time. As a first cut, I was trying to add a boundary in the center of main domain and set that boundary as a bidirectional inlet. That does not appear to work.
It's unlikely that the chemical reaction component can be easily modeled, however, it would be helpful as a start to have a bidirectional inlet in the center of the structure. The opposing ends would be outlets.
Does anyone have any thoughts on this?
Thanks,
Art
I would like to model an elastic chamber that will fill with CO2 gas based on a chemical reaction in the center of the chamber. The gas and also expended reactant (liquid) expand into a series of chambers equipped with baffles. There are also vents allowing the gas to escape when a certain pressure is reached.
The study is to understand how varying baffle dimensions and path lengths affects the inflation of the balloon as a function of time. As a first cut, I was trying to add a boundary in the center of main domain and set that boundary as a bidirectional inlet. That does not appear to work.
It's unlikely that the chemical reaction component can be easily modeled, however, it would be helpful as a start to have a bidirectional inlet in the center of the structure. The opposing ends would be outlets.
Does anyone have any thoughts on this?
Thanks,
Art
1 Reply Last Post Sep 9, 2014, 8:42 a.m. EDT
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Posted:
10 years ago
I would place a small sphere at the location where the reaction takes place, and put an inlet boundary condition on its surface. The total influx should then equal the total gas generation rate.