Publication detail

Experimental and numerical analysis of wall heat transfer in non-premixed gas combustor

VONDÁL, J. HÁJEK, J.

Original Title

Experimental and numerical analysis of wall heat transfer in non-premixed gas combustor

Type

journal article - other

Language

English

Original Abstract

Prediction of wall heat transfer in combustion chambers attracts attention of design engineers in process industry due its implications for the construction of combustors and boilers. Firstly, this paper addresses the reliability and accuracy of an experiment performed in a large-scale experimental combustion chamber equipped with staged-gas non-premixed 745 kW burner. The experiment serves as means to determine boundary conditions and validate predictions by computational fluid dynamics (CFD) software. Several accuracy issues of the used measuring gauges and instruments are discussed with focus on wall heat fluxes and stabilization of the measured data. Second part of the paper presents CFD simulations of the combustor using Reynolds-averaged Navier-Stokes (RANS) models and validates them by the measured data. Overall model configuration, boundary conditions and key sub-models for turbulence and chemistry are summarised. Deviations of the predictions from the experiment are discussed and possible explanations are offered.

Keywords

swirling diffusion flame, wall heat flux, measurement, computations

Authors

VONDÁL, J.; HÁJEK, J.

RIV year

2009

Released

11. 5. 2009

ISBN

1974-9791

Periodical

Chemical Engineering Transactions

Year of study

18

Number

1

State

Republic of Italy

Pages from

587

Pages to

592

Pages count

6

URL

http://www.aidic.it/cet/09/18/095.pdf

BibTex

@article{BUT49522,
  author="Jiří {Vondál} and Jiří {Hájek}",
  title="Experimental and numerical analysis of wall heat transfer in non-premixed gas combustor",
  journal="Chemical Engineering Transactions",
  year="2009",
  volume="18",
  number="1",
  pages="587--592",
  issn="1974-9791",
  url="http://www.aidic.it/cet/09/18/095.pdf"
}