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Bachelorthesis: Simulation of venting process of a liquid He pipeline.
Posted 2014年7月7日 GMT-4 09:13 Fluid & Heat, Heat Transfer & Phase Change, Modeling Tools & Definitions, Parameters, Variables, & Functions 1 Reply
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Hello,
I will do my thesis next semester, where I will use Comsol to simulate an emergency case at a helium pipe.
Problem:
The simulation will be about a double-walled helium pipeline. In the inner pipeline is liquid He flowing at 4K and 20 bar. The outer wall is cooled to 80K. Between those walls there is a vacuum at 10^-6 mbar to save the inner pipeline from heating by the atmosphere. When a vacuum breakdown occurs, the inner pipeline is heated and the He evaporates. For this case there are emergency valves to vent the He-pipeline.
My task is to simulate the venting process (p(x,t)) and find a threshold, for the pressure inside the He-pipeline, at which the valves have to be opened to prevent damage to the facility.
My supervisor asked me now to figure out which comsol module would be the best for this problem.
Is it possible to simulate the evaporation of He in the pipeline?
Thank you for your help!
I will do my thesis next semester, where I will use Comsol to simulate an emergency case at a helium pipe.
Problem:
The simulation will be about a double-walled helium pipeline. In the inner pipeline is liquid He flowing at 4K and 20 bar. The outer wall is cooled to 80K. Between those walls there is a vacuum at 10^-6 mbar to save the inner pipeline from heating by the atmosphere. When a vacuum breakdown occurs, the inner pipeline is heated and the He evaporates. For this case there are emergency valves to vent the He-pipeline.
My task is to simulate the venting process (p(x,t)) and find a threshold, for the pressure inside the He-pipeline, at which the valves have to be opened to prevent damage to the facility.
My supervisor asked me now to figure out which comsol module would be the best for this problem.
Is it possible to simulate the evaporation of He in the pipeline?
Thank you for your help!
1 Reply Last Post 2014年7月7日 GMT-4 10:06
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Posted:
1 decade ago
I think it would be possible with the heat transfer module, using phase change.