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A thermal NO(x) prediction model - Scalar computation module for CFD codes with fluid and kinetic effectsA thermal NO(x) prediction model is developed to interface with a CFD, k-epsilon based code. A converged solution from the CFD code is the input to the postprocessing model for prediction of thermal NO(x). The model uses a decoupled analysis to estimate the equilibrium level of (NO(x))e which is the constant rate limit. This value is used to estimate the flame (NO(x)) and in turn predict the rate of formation at each node using a two-step Zeldovich mechanism. The rate is fixed on the NO(x) production rate plot by estimating the time to reach equilibrium by a differential analysis based on the reaction: O + N2 = NO + N. The rate is integrated in the nonequilibrium time space based on the residence time at each node in the computational domain. The sum of all nodal predictions yields the total NO(x) level.
Document ID
19930066150
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Mcbeath, Giorgio
(NASA Lewis Research Center Cleveland, OH, United States)
Ghorashi, Bahman
(Cleveland State Univ. OH, United States)
Chun, Kue
(NASA Lewis Research Center Cleveland, OH, United States)
Date Acquired
August 16, 2013
Publication Date
June 1, 1993
Subject Category
Inorganic And Physical Chemistry
Report/Patent Number
AIAA PAPER 93-2378
Meeting Information
Meeting: AIAA, SAE, ASME, and ASEE, Joint Propulsion Conference and Exhibit
Location: Monterey, CA
Country: United States
Start Date: June 28, 1993
End Date: June 30, 1993
Sponsors: ASEE, ASME, SAE, AIAA
Accession Number
93A50147
Distribution Limits
Public
Copyright
Other

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