title: Particulate pollutant source evaluation using an inverse method under steady-state conditions.
abstract: This article presents a method that enables the generation rate from one or /more particle sources to be estimated, using far-field concentration measurements. The method is made up of two distinct steps; a calibration phase, followed by an estimation phase. The calibration phase makes it possible to create a transfer relationship between a known source ("reference source") and the measurement of the far-field concentration. The second step consists of estimating unknown source generation rates by inverting the transfer relationship and using measurements of far-field concentrations resulting from these unknown sources. In addition, this article presents a technique to improve the positioning of the sensors in the room in which the sources are situated. A numerical study using computational fluid dynamics was first conducted to theoretically validate the estimation method and assist with choosing the sensor positions in the experimental rig. The study established that, with ideal sensors, the difference between the real and estimated generation rates can be accurate to within 0.1%. The method was then deployed on an experimental case. The results confirmed that it is possible to estimate an isolated source. However, the quality of the estimation deteriorated when the source to be estimated was significantly different from the reference source, from an aerodynamic perspective.
authors.affiliation: a Institut National de Recherche et de Sécurité (INRS) , Vandoeuvre-lès-Nancy , France.|b Laboratoire d'Energétique et de Mécanique Théorique et Appliquée (LEMTA) - CNRS UMR7563 , Vandoeuvre-lès-Nancy , France.
authors.forename: F
authors.initials: F
authors.lastname: Chata
authors.affiliation: a Institut National de Recherche et de Sécurité (INRS) , Vandoeuvre-lès-Nancy , France.
authors.forename: E
authors.initials: E
authors.lastname: Belut
authors.affiliation: a Institut National de Recherche et de Sécurité (INRS) , Vandoeuvre-lès-Nancy , France.
authors.forename: F X
authors.initials: FX
authors.lastname: Keller
authors.affiliation: b Laboratoire d'Energétique et de Mécanique Théorique et Appliquée (LEMTA) - CNRS UMR7563 , Vandoeuvre-lès-Nancy , France.
authors.forename: A
authors.initials: A
authors.lastname: Taniere
mesh_terms: D000392:Air Movements; D000393:Air Pollutants / Q000032:analysis* / Q000737:chemistry; D002138:Calibration; D003198:Computer Simulation; D004784:Environmental Monitoring / Q000379:methods*; D057446:Hydrodynamics; D052638:Particulate Matter / Q000032:analysis* / Q000737:chemistry
chemical_list: D000393:Air Pollutants; D052638:Particulate Matter
keywords: Computational fluid dynamics; inverse problem; particulate pollutant; source evaluation; steady-state conditions