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Chemical processes in the turbine and exhaust nozzle

Abstract

The objective is to establish an understanding of primary pollutant, trace species, and aerosol chemical evolution as engine exhaust travels through the nonuniform, unsteady flow fields of the turbine and exhaust nozzle. An understanding of such processes is necessary to provide accurate inputs for plume-wake modeling efforts and is therefore a critical element in an assessment of the atmospheric effects of both current and future aircraft. To perform these studies, a numerical tool was developed combining the calculation of chemical kinetics and one-, two-, or three-dimensional (1-D, 2-D, 3-D) Reynolds-averaged flow equations. Using a chemistry model that includes HO{sub x}, NO{sub y}, SO{sub x}, and CO{sub x} reactions, several 1-D parametric analyses were conducted for the entire turbine and exhaust nozzle flow path of a typical advanced subsonic engine to understand the effects of various flow and chemistry uncertainties on a baseline 1-D result. These calculations were also used to determine parametric criteria for judging 1-D, 2-D, and 3-D modeling requirements as well as to provide information about chemical speciation at the nozzle exit plane. (author) 9 refs.
Authors:
Lukachko, S P; Waitz, I A; [1]  Miake-Lye, R C; Brown, R C; Anderson, M R; [2]  Dawes, W N [3] 
  1. Massachusetts Inst. of Tech., Cambridge, MA (United States). Aero-Environmental Lab.
  2. Aerodyne Research, Inc., Billerica, MA (United States)
  3. University Engineering Dept., Cambridge (United Kingdom). Whittle Lab.
Publication Date:
Dec 31, 1997
Product Type:
Conference
Report Number:
ONERA-97-Vol.1; CONF-9610234-
Reference Number:
SCA: 540110; 540120; PA: FRC-98:000110; EDB-98:075809; SN: 98001913075
Resource Relation:
Conference: International colloquium: Impact of aircraft emissions upon the atmosphere, Paris (France), 15-18 Oct 1996; Other Information: PBD: 1997; Related Information: Is Part Of Proceedings of impact of aircraft emissions upon the atmosphere. V. 1; PB: [381] p.
Subject:
54 ENVIRONMENTAL SCIENCES; AIRCRAFT; EXHAUST GASES; NOZZLES; TURBINES; GAS FLOW; NITROGEN OXIDES; SULFUR OXIDES; CARBON OXIDES; CHEMICAL REACTIONS; PARAMETRIC ANALYSIS; CALCULATION METHODS
OSTI ID:
623586
Research Organizations:
Office National d`Etudes et de Recherches Aerospatiales (ONERA), 92 - Chatillon (France)
Country of Origin:
France
Language:
English
Other Identifying Numbers:
Other: ON: DE98731902; TRN: FR9800110
Availability:
OSTI as DE98731902
Submitting Site:
FR
Size:
pp. 95-100
Announcement Date:

Citation Formats

Lukachko, S P, Waitz, I A, Miake-Lye, R C, Brown, R C, Anderson, M R, and Dawes, W N. Chemical processes in the turbine and exhaust nozzle. France: N. p., 1997. Web.
Lukachko, S P, Waitz, I A, Miake-Lye, R C, Brown, R C, Anderson, M R, & Dawes, W N. Chemical processes in the turbine and exhaust nozzle. France.
Lukachko, S P, Waitz, I A, Miake-Lye, R C, Brown, R C, Anderson, M R, and Dawes, W N. 1997. "Chemical processes in the turbine and exhaust nozzle." France.
@misc{etde_623586,
title = {Chemical processes in the turbine and exhaust nozzle}
author = {Lukachko, S P, Waitz, I A, Miake-Lye, R C, Brown, R C, Anderson, M R, and Dawes, W N}
abstractNote = {The objective is to establish an understanding of primary pollutant, trace species, and aerosol chemical evolution as engine exhaust travels through the nonuniform, unsteady flow fields of the turbine and exhaust nozzle. An understanding of such processes is necessary to provide accurate inputs for plume-wake modeling efforts and is therefore a critical element in an assessment of the atmospheric effects of both current and future aircraft. To perform these studies, a numerical tool was developed combining the calculation of chemical kinetics and one-, two-, or three-dimensional (1-D, 2-D, 3-D) Reynolds-averaged flow equations. Using a chemistry model that includes HO{sub x}, NO{sub y}, SO{sub x}, and CO{sub x} reactions, several 1-D parametric analyses were conducted for the entire turbine and exhaust nozzle flow path of a typical advanced subsonic engine to understand the effects of various flow and chemistry uncertainties on a baseline 1-D result. These calculations were also used to determine parametric criteria for judging 1-D, 2-D, and 3-D modeling requirements as well as to provide information about chemical speciation at the nozzle exit plane. (author) 9 refs.}
place = {France}
year = {1997}
month = {Dec}
}