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A comparison of three turbulence models for axisymmetric isothermal swirling flows in the near burner zone

Abstract

In this work three different turbulence models, the k - {epsilon}, RNG k - {epsilon} and Reynolds stress model, have been compared in the case of confined swirling flow. The flow geometries are the isothermal swirling flows measured by International Flame Research Foundation (IFRF). The inlet boundary profiles have been taken from the measurements. At the outlet the effect of furnace end contraction has been studied. The k - {epsilon} model falls to predict the correct flow field. The RNG k - {epsilon} model can provide improvements, although it has problems near the symmetry axis. The Reynolds stress model produces the best agreement with measured data. (author) 13 refs.
Authors:
Ahlstedt, H [1] 
  1. Tampere Univ. of Technology (Finland). Energy and Process Engineering
Publication Date:
Dec 31, 1997
Product Type:
Conference
Report Number:
TKK-MK-1; CONF-9706306-
Reference Number:
SCA: 420400; 014000; PA: FI-99:003124; EDB-99:070934; SN: 99002078289
Resource Relation:
Conference: 4. international colloquium on process simulation, Espoo (Finland), 11-13 Jun 1997; Other Information: PBD: 1997; Related Information: Is Part Of The 4th international colloquium on process simulation. Proceedings; Jokilaakso, A. [Helsinki Univ. of Technology, Otaniemi (Finland). Dept. of Materials Science and Metallurgy]; PB: 621 p.
Subject:
42 ENGINEERING NOT INCLUDED IN OTHER CATEGORIES; 01 COAL, LIGNITE, AND PEAT; BURNERS; TURBULENCE; VORTEX FLOW; FLOW MODELS; FLAMES; REYNOLDS NUMBER; NAVIER-STOKES EQUATIONS; VISCOSITY; BOUNDARY CONDITIONS; COAL; COMBUSTION KINETICS
OSTI ID:
357230
Research Organizations:
Helsinki Univ. of Technology, Otaniemi (Finland)
Country of Origin:
Finland
Language:
English
Other Identifying Numbers:
Other: ON: DE99735414; ISBN 951-22-3574-9; TRN: FI9903124
Availability:
OSTI as DE99735414
Submitting Site:
FI
Size:
pp. 505-530
Announcement Date:
Aug 12, 1999

Citation Formats

Ahlstedt, H. A comparison of three turbulence models for axisymmetric isothermal swirling flows in the near burner zone. Finland: N. p., 1997. Web.
Ahlstedt, H. A comparison of three turbulence models for axisymmetric isothermal swirling flows in the near burner zone. Finland.
Ahlstedt, H. 1997. "A comparison of three turbulence models for axisymmetric isothermal swirling flows in the near burner zone." Finland.
@misc{etde_357230,
title = {A comparison of three turbulence models for axisymmetric isothermal swirling flows in the near burner zone}
author = {Ahlstedt, H}
abstractNote = {In this work three different turbulence models, the k - {epsilon}, RNG k - {epsilon} and Reynolds stress model, have been compared in the case of confined swirling flow. The flow geometries are the isothermal swirling flows measured by International Flame Research Foundation (IFRF). The inlet boundary profiles have been taken from the measurements. At the outlet the effect of furnace end contraction has been studied. The k - {epsilon} model falls to predict the correct flow field. The RNG k - {epsilon} model can provide improvements, although it has problems near the symmetry axis. The Reynolds stress model produces the best agreement with measured data. (author) 13 refs.}
place = {Finland}
year = {1997}
month = {Dec}
}