Sectional modeling of aerosol dynamics in multi-dimensional flows

Mitrakos, D; Hinis, E; Housiadas, C

dc.contributor.author	Mitrakos, D	en
dc.contributor.author	Hinis, E	en
dc.contributor.author	Housiadas, C	en
dc.date.accessioned	2014-03-01T01:27:13Z
dc.date.available	2014-03-01T01:27:13Z
dc.date.issued	2007	en
dc.identifier.issn	0278-6826	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/18346
dc.subject	Aerosol Dynamics	en
dc.subject	Multi Dimensional	en
dc.subject.classification	Engineering, Mechanical	en
dc.subject.classification	Environmental Sciences	en
dc.subject.other	MATTER LADEN FLOWS	en
dc.subject.other	LAMINAR-FLOW	en
dc.subject.other	POPULATION BALANCE	en
dc.subject.other	QUADRATURE METHOD	en
dc.subject.other	PARTICLE GROWTH	en
dc.subject.other	FLAME SYNTHESIS	en
dc.subject.other	SIMULATION	en
dc.subject.other	CONDENSATION	en
dc.subject.other	NUCLEATION	en
dc.subject.other	MOMENTS	en
dc.title	Sectional modeling of aerosol dynamics in multi-dimensional flows	en
heal.type	journalArticle	en
heal.identifier.primary	10.1080/02786820701697804	en
heal.identifier.secondary	http://dx.doi.org/10.1080/02786820701697804	en
heal.language	English	en
heal.publicationDate	2007	en
heal.abstract	The integration of computational fluid dynamics (CFD) with computer modeling of aerosol dynamics is needed in several practical applications. The use of a sectional size distribution is desirable because it offers generality and flexibility in describing the evolution of the aerosol. However, in the presence of condensational growth the sectional method is computationally expensive in multidimensional flows, because a large number of size sections is required to cope with numerical diffusion and achieve accuracy in the delicate coupling between the competing processes of nucleation and condensation. The present work proposes a methodology that enables the implementation of the sectional method in Eulerian multidimensional CFD calculations. For the solution of condensational growth a number conservative numerical scheme is proposed. The scheme is based on a combination of moving and fixed particle size grids and a re-mapping process for the cumulative size distribution, carried out with cubic spline interpolation. The coupling of the aerosol dynamics with the multidimensional CFD calculations is performed with an operator splitting technique, permitting to deal efficiently with the largely different time scales of the aerosol dynamics and transport processes. The developed methodology is validated against available analytical solutions of the general dynamic equation. The appropriateness of the methodology is evaluated by, reproducing the numerically demanding case of nucleation-condensation in an experimental aerosol reactor. The method is found free of numerical diffusion and robust. Good accuracy, is obtained with a modest number of size sections, whereas the computational time on a common personal computer remained always reasonable.	en
heal.publisher	TAYLOR & FRANCIS INC	en
heal.journalName	AEROSOL SCIENCE AND TECHNOLOGY	en
dc.identifier.doi	10.1080/02786820701697804	en
dc.identifier.isi	ISI:000252149200003	en
dc.identifier.volume	41	en
dc.identifier.issue	12	en
dc.identifier.spage	1076	en
dc.identifier.epage	1088	en