Publication detail
GRATECAL – Computational Tool for Numerical Simulation of Biomass Grate Combustion
JUŘENA, T. HÁJEK, J.
Czech title
GRATECAL – Výpočtový nástroj pro numerickou simulaci spalování biomasy na roštu
English title
GRATECAL – Computational Tool for Numerical Simulation of Biomass Grate Combustion
Type
abstract
Language
en
Original abstract
The contribution is focused on numerical modelling of grate combustion of solid fuels by means of computational fluid dynamics (CFD) methods. Since results from simulations of grate combustion depend, among others, on the quality of input data including temperature, mass flux and chemical composition of flue gas leaving fuel bed, the attention is turned to modelling of processes, that take place within the fuel bed on the grate. A standalone numerical bed model can be coupled with a CFD model of grate furnace (the so called freeboard), providing for an estimate of boundary conditions at the furnace inlet. The aim is to develop a reliable numerical model of packed-bed combustion. Special emphasis is put on the conservativeness property of the numerical model, i.e. the gas formed during in-bed processes must carry correct amount of mass and energy.
Czech abstract
Příspěvek se zabývá popisem výpočtového nástroje GRATECAL pro numerickou simulaci spalování biomasy na roštu experimentálního reaktoru. Specifickým rysem tohoto nástroje je implementace bilanční kontroly systému, která umožňuje analyzovat vliv konvergenčního kriteria na celkovou hmotnostní a energetickou rovnováhu systému.
English abstract
The contribution is focused on numerical modelling of grate combustion of solid fuels by means of computational fluid dynamics (CFD) methods. Since results from simulations of grate combustion depend, among others, on the quality of input data including temperature, mass flux and chemical composition of flue gas leaving fuel bed, the attention is turned to modelling of processes, that take place within the fuel bed on the grate. A standalone numerical bed model can be coupled with a CFD model of grate furnace (the so called freeboard), providing for an estimate of boundary conditions at the furnace inlet. The aim is to develop a reliable numerical model of packed-bed combustion. Special emphasis is put on the conservativeness property of the numerical model, i.e. the gas formed during in-bed processes must carry correct amount of mass and energy.
Keywords in Czech
GRATECAL, spalování, biomasa, experimentální reaktor, rošt, numerická simulace
Keywords in English
GRATECAL, numerical simulation, biomass, combustion, grate, experimental reactor
Released
21.04.2013
Location
The Hague, Netherlands
Book
Proceedings of 9th European Congress of Chemical Engineers
Pages count
1