title: Use of CFD for static sampling hood design: An example for methane flux assessment on landfill surfaces.
abstract: The work focuses on the principles for the design of a specific static hood and on the definition of an optimal sampling procedure for the assessment of landfill gas (LFG) surface emissions. This is carried out by means of computational fluid dynamics (CFD) simulations to investigate the fluid dynamics conditions of the hood. The study proves that understanding the fluid dynamic conditions is fundamental in order to understand the sampling results and correctly interpret the measured concentration values by relating them to a suitable LFG emission model, and therefore to estimate emission rates. For this reason, CFD is a useful tool for the design and evaluation of sampling systems, among others, to verify the fundamental hypotheses on which the mass balance for the sampling hood is defined. The procedure here discussed, which is specific for the case of the investigated landfill, can be generalized to be applied also to different scenarios, where hood sampling is involved.
authors.affiliation: Politecnico di Milano - Department of Chemistry, Materials and Chemical Engineering "Giulio Natta", Piazza Leonardo da Vinci 32, 20133, Milano, Italy.
authors.forename: Federico
authors.initials: F
authors.lastname: Lucernoni
authors.affiliation: Politecnico di Milano - Department of Chemistry, Materials and Chemical Engineering "Giulio Natta", Piazza Leonardo da Vinci 32, 20133, Milano, Italy.
authors.forename: Matteo
authors.initials: M
authors.lastname: Rizzotto
authors.affiliation: Politecnico di Milano - Department of Chemistry, Materials and Chemical Engineering "Giulio Natta", Piazza Leonardo da Vinci 32, 20133, Milano, Italy.
authors.forename: Federica
authors.initials: F
authors.lastname: Tapparo
authors.affiliation: Politecnico di Milano - Department of Chemistry, Materials and Chemical Engineering "Giulio Natta", Piazza Leonardo da Vinci 32, 20133, Milano, Italy.
authors.forename: Laura
authors.initials: L
authors.lastname: Capelli
authors.affiliation: Politecnico di Milano - Department of Chemistry, Materials and Chemical Engineering "Giulio Natta", Piazza Leonardo da Vinci 32, 20133, Milano, Italy.
authors.forename: Selena
authors.initials: S
authors.lastname: Sironi
authors.affiliation: Politecnico di Milano - Department of Chemistry, Materials and Chemical Engineering "Giulio Natta", Piazza Leonardo da Vinci 32, 20133, Milano, Italy. Electronic address: valentina.busini@polimi.it.
authors.forename: Valentina
authors.initials: V
authors.lastname: Busini
mesh_terms: D000393:Air Pollutants / Q000737:chemistry*; D004784:Environmental Monitoring / Q000379:methods; D057446:Hydrodynamics; D008697:Methane / Q000032:analysis* / Q000737:chemistry*; D008962:Models, Theoretical; D012037:Refuse Disposal; D064091:Waste Disposal Facilities
chemical_list: D000393:Air Pollutants; D008697:Methane
keywords: Computational fluid dynamics; Emissions assessment; Flux chamber; Landfill gas; Passive area sources; Static hood