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Stopping the flow in a pipe after a certain time
Posted May 16, 2016, 8:22 a.m. EDT Fluid & Heat, Computational Fluid Dynamics (CFD), Modeling Tools & Definitions, Parameters, Variables, & Functions 1 Reply
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Hi, I am new to COMSOL and I am simulating the expansion of steam in a a condenser from a cylinder. They are connected by a pipe. The expansion is due to pressure difference. I need to run the simulation for about 1 s.
Is there any way I can block the flow of steam from the cylinder to the condenser after a certain time say about 0.5 s and then simulate just the condenser for the remaining 0.5 s?
Is there any way I can block the flow of steam from the cylinder to the condenser after a certain time say about 0.5 s and then simulate just the condenser for the remaining 0.5 s?
1 Reply Last Post May 16, 2016, 4:54 p.m. EDT
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Posted:
8 years ago
Use if statement with expression. if(t<.5[s]) *inlet_velocity . This will keep the inlet until .5 s and after that flow will be zero.