Niko Samec (Author), Filip Kokalj (Author), Jyh-Yan Chen (Author)

Abstract

A numerical analysis of combustion in the secondary chamber (thermoreactor) ofa two-stage pilot scale incinerator using computational fluid dynamics (CFD)is presented in detail. Various versions of the CFD program package CFX were used, which offer different combustion models for specific types and forms of combustion processes. The present study was focused on those physicalconditions that assure complete combustion, that is, temperature, residence time, and turbulent mixing. The selection of an appropriate combustion model was based on a comparison of the numerical results and experimental values of some combustion macro parameters in a thermoreactor. Combustion models based on one-step bimolecular chemical reaction and models based on multistep reactions were used. These models enabled a more detailed prediction of the combustion process in the secondary chamber of a pilot-scaleincinerator. The products of incomplete combustion that are significantly important for the designing and optimization of combustion devices can be predicted by applying multistep reaction models more accurately, especially in a transient regime of combustion.

Keywords

sežiganje odpadkov;numerično modeliranje;modeli zgorevanja;sežigalna komora;CFX;računalniška dinamika fluidov;waste incineration;numerical modeling;combustion models;incinerator chamber;CFD;computational fluid dynamics;

Data

Language: English
Year of publishing:
Typology: 1.01 - Original Scientific Article
Organization: UM FS - Faculty of Mechanical Engineering
UDC: 628.474.3
COBISS: 11748374 Link will open in a new window
ISSN: 1092-8758
Views: 1991
Downloads: 77
Average score: 0 (0 votes)
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Other data

Secondary language: English
Secondary keywords: sežiganje odpadkov;numerično modeliranje;modeli zgorevanja;sežigalna komora;CFX;računalniška dinamika fluidov;
URN: URN:SI:UM:
Pages: str. 905-915
Volume: ǂVol. ǂ24
Issue: ǂno. ǂ7
Chronology: 2007
ID: 8717411