CO concentration in car park
Hei,
I am new to CFD. I am simulating the CO levels in an underground car park. I have obtained convergence for velocity and pressure. I made a face on the floor of the car park called 'driving lane' to act as the source of CO. I use the driving lane face as a mass flow inlet BC I am using a k-epsilon realizable model. In materials panel i am using only 2 species air and CO However on simulation i am getting very high levels of CO in the car park volume. i tried two conditions for the mass flow inlet 1. mass flow rate of 1.8e-5 kg/sec and mass fraction of CO as 1 2. 2.69kg/sec of air and mass fraction of CO as 1.4e-04 I have the field data for a particular car park. I am not sure where i am going wrong. I am in urgent help as this work has to be completed by Feb end. |
Field values are in the range of 6 to 10 ppm
Simulation values are all in excess of 100000 ppm |
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