Computational Fluid Dynamics
After completing both star design and Star CCM+ tutorials it is apparent that creating the simulation of the room will be a complex and time consuming task. I have done many experiments within Star Design and CCM, which include mainly inlet heated flows and pressure outlets. My most recent simulations have been of the actual test rig model and forcing air at 15m/s at 900K into the "room." The results are interesting, if perhaps not that accurate as I am yet to learn which parameters need changing to create a more accurate simulation. The simulation appears to show, that with a sealed room, the fire is very much confined to the lower floor of the office, however this does not take into accout the fire increasing in intensity or spreading to other parts of the building. My next test will be with an outlet to a free stream state just to create a pressure gradient within the room and then hopefully with active outlets that should be able to simulate a fan.
I have very little clue as to go about creating a particle source within the simulation, this is something that I will need to research further and get Yongmanns input in as it is important to be able to simulate not just the temperature flow but also the smoke particles that will be detected. Gravity is another area that has not been applied yet but this should be a simple exercise.
Simulations for the poster presentation have been created and can be seen in the final product.
Term 2 has begun and with it a realisation of the scale of work that need to be completed. Simulations have become difficult as insufficient time has been spent being taught how to use the program but simulations for a single inlet/single outlet system have begun and results are proving promising. Once correct outlet criteria have been met then the simulations will begin, hopefully by this time some PIV data will be available to validate the new tests.
