Air change effectiveness in a naturally ventilated building -- CFD Online Discussion Forums

November 30, 2015, 16:30	Air change effectiveness in a naturally ventilated building	#1
kingjewel1 Senior Member Join Date: Jul 2009 Posts: 260 Rep Power: 18	I have a surface mounted cube with one window and would like to work out the ventilation rate and effectiveness at different heights in this cube. Can you suggest a way of calculating the ventilation rate? I have thought of: 1. Filling the domain with CO2 and letting it decay over time 2. Finding the age of air with a scalar 3. Releasing particles at the window and observing long they take to leave. Any suggestions?

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