Estimation of Time-Varying Gaseous Contaminant Sources in Ventilated Enclosures Through Inversion of a Reduced Model

A method for estimating the time-varying intensity of emitting sources of a gaseous contaminant inventilated enclosures is proposed in this numerical study. A reduced model linking up a set of control points inside the domain to the contaminant sources is identified using the Modal Identification Method, from simulations carried out using CFD software. This reduced model is then used to solve the inverse forced convection problem consisting of the estimation of sources emission rates as a function of time from simulated contaminant concentration measurements.