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Author Topic: Variable HRR value in Pyrosim.  (Read 870 times)


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Variable HRR value in Pyrosim.
« on: April 04, 2018, 07:22:38 am »

 I want to simulate a problem is in Pyrosim.
Actually, one of my foreign labmate done some experiments in which one closed drum containing DTBP fuel, heated from outside by some external fire source.
When the pressure inside the cylinder reaches above the 25bar, drum's upper head(drum cap) got ruptured and it creates some pool fire for 70-80% of burning time.In which as time progress Heat Release rate also changes.

When the temperature inside cylinder got increased above a certain limit remaining DTBP fuel explodes and it creates a fireball after pool fire for the remaining time. I attach an image of the fireball from experiment and same is validated in Ansys CFX by one of my colleagues.

Now I want to validate same in the Pyrosim.

In my pyrosim model fuel is released from a small opening of 1m *0.6m  in a 25m*25m base dimensions and 40 m height rectangular 3D domain.

Could you please help me to how to prepare .psm file for this process in Pyrosim?