OPPDIF: A Fortran program for computing opposed-flow diffusion flames

doi:https://doi.org/10.2172/568983

Title: OPPDIF: A Fortran program for computing opposed-flow diffusion flames

Full Record
Other Related Research

Abstract

OPPDIF is a Fortran program that computes the diffusion flame between two opposing nozzles. A similarity transformation reduces the two-dimensional axisymmetric flow field to a one-dimensional problem. Assuming that the radial component of velocity is linear in radius, the dependent variables become functions of the axial direction only. OPPDIF solves for the temperature, species mass fractions, axial and radial velocity components, and radial pressure gradient, which is an eigenvalue in the problem. The TWOPNT software solves the two-point boundary value problem for the steady-state form of the discretized equations. The CHEMKIN package evaluates chemical reaction rates and thermodynamic and transport properties.

Authors:

Lutz, A E; Kee, R J; Grcar, J F; Rupley, F M ^[1]

Sandia National Labs., Livermore, CA (United States). Thermal and Plasma Processes Dept.

Publication Date:: 1997-05-01

Research Org.:: Sandia National Labs., Livermore, CA (United States)

Sponsoring Org.:: USDOE Assistant Secretary for Energy Efficiency and Renewable Energy, Washington, DC (United States)

OSTI Identifier:: 568983

Report Number(s):: SAND-96-8243
ON: DE97053779; TRN: AHC29805%%3

DOE Contract Number:: AC04-94AL85000

Resource Type:: Technical Report

Resource Relation:: Other Information: PBD: May 1997

Country of Publication:: United States

Language:: English

Subject:: 03 NATURAL GAS; 40 CHEMISTRY; 99 MATHEMATICS, COMPUTERS, INFORMATION SCIENCE, MANAGEMENT, LAW, MISCELLANEOUS; FLAMES; FLUID MECHANICS; O CODES; NOZZLES; COMBUSTION KINETICS; METHANE; T CODES; C CODES; THERMODYNAMICS; DIFFUSION; TEMPERATURE DISTRIBUTION; COMPUTER PROGRAM DOCUMENTATION

Citation Formats


                    Lutz, A E, Kee, R J, Grcar, J F, and Rupley, F M. OPPDIF: A Fortran program for computing opposed-flow diffusion flames.  United States: N. p., 1997. 
        Web.  doi:10.2172/568983.

Copy to clipboard


                    Lutz, A E, Kee, R J, Grcar, J F, & Rupley, F M. OPPDIF: A Fortran program for computing opposed-flow diffusion flames.  United States.  https://doi.org/10.2172/568983

Copy to clipboard


                    Lutz, A E, Kee, R J, Grcar, J F, and Rupley, F M. Thu .  
        "OPPDIF: A Fortran program for computing opposed-flow diffusion flames".  United States.  https://doi.org/10.2172/568983.  https://www.osti.gov/servlets/purl/568983.

Copy to clipboard


                    
@article{osti_568983,

  title        = {OPPDIF: A Fortran program for computing opposed-flow diffusion flames},

  author       = {Lutz, A E and Kee, R J and Grcar, J F and Rupley, F M},

  abstractNote = {OPPDIF is a Fortran program that computes the diffusion flame between two opposing nozzles. A similarity transformation reduces the two-dimensional axisymmetric flow field to a one-dimensional problem. Assuming that the radial component of velocity is linear in radius, the dependent variables become functions of the axial direction only. OPPDIF solves for the temperature, species mass fractions, axial and radial velocity components, and radial pressure gradient, which is an eigenvalue in the problem. The TWOPNT software solves the two-point boundary value problem for the steady-state form of the discretized equations. The CHEMKIN package evaluates chemical reaction rates and thermodynamic and transport properties.},

  doi          = {10.2172/568983},

  url          = {https://www.osti.gov/biblio/568983},
  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {1997},

  month        = {5}

}

Copy to clipboard

Technical Report:

View Technical Report (1.91 MB)

https://doi.org/10.2172/568983

Save / Share:

Export Metadata

Save to My Library

Similar records in OSTI.GOV collections:

OPUS: A Fortran Program for Unsteady Opposed-Flowed Flames

Technical Report Im, H G ; Raja, L L ; Kee, R J ; ...

OPUS is a Fortran program for computing unsteady combustion problems in an opposed-flow configuration using one-dimensional similarity coordinate. The code is an extension of the steady counterpart, OPPDIF, to transient problems by modifying the formulation to accommodate gasdynamic compressibility effects, allowing high-accuracy time integration with adaptive time stepping. Time integration of the differential-algebraic system of equations is performed by the DASPK software package, while the Chemkin packages are used to compute chemical reaction rates and thermodynamic/transport properties. This document describes the details of the mathematical formulation and instruction for using the code.
https://doi.org/10.2172/759209

Full Text Available
Effects of CO addition on the characteristics of laminar premixed CH{sub 4}/air opposed-jet flames

Journal Article Wu, C -Y ; Chao, Y -C ; Chen, C -P ; ... - Combustion and Flame

The effects of CO addition on the characteristics of premixed CH{sub 4}/air opposed-jet flames are investigated experimentally and numerically. Experimental measurements and numerical simulations of the flame front position, temperature, and velocity are performed in stoichiometric CH{sub 4}/CO/air opposed-jet flames with various CO contents in the fuel. Thermocouple is used for the determination of flame temperature, velocity measurement is made using particle image velocimetry (PIV), and the flame front position is measured by direct photograph as well as with laser-induced predissociative fluorescence (LIPF) of OH imaging techniques. The laminar burning velocity is calculated using the PREMIX code of Chemkin collectionmore »« less
https://doi.org/10.1016/J.COMBUSTFLAME.2008.10.028
Velocity and thermal structure, and strain-induced extinction of 14 to 100% hydrogen-air counterflow diffusion flames

Journal Article Pellett, G L ; Humphreys, Jr, W M ; Gartrell, L R ; ... - Combustion and Flame

Extensive results from axisymmetric convergent-nozzle and straight-tube opposed jet burners (OJBs) characterized strain-induced extinction of unanchored (free-floating), laminar H{sub 2}/N{sub 2}-air flames. Parameters included (a) plug-flow and parabolic input velocity profiles, (b) jet exit diameters ranging 2.7 to 7.2 mm for nozzles and 1.8 to 10 mm for tubes, (c) various relative jet gaps, and (d) 14 to 100% H{sub 2} in the fuel jet. Extinction, a sudden rupture (blowoff) of the mostly-airside disk flame, occurred as fuel and air flows were slowly increased and a critical radial strain rate was exceeded. Focusing schlieren, thermocouple, and airside LDV (and PIV)more »« less
https://doi.org/10.1016/S0010-2180(97)00169-7
Similarity solutions in buoyancy-controlled turbulent diffusion flame modeling; Turbulent buoyant diffusion flame modeling

Journal Article Pivovarov, M A ; Zhang, H ; Ramakev, D E ; ... - Combustion and Flame; (United States)

This paper considers the applicability of different versions of the k-[epsilon] hypothesis of turbulence for flame modeling. Utilizing similarity solutions, the authors find that the k-[epsilon] hypothesis gives a finite radius for a weak axisymmetric plume above the heat source. The radius of this plume is defined as an eigenvalue of the boundary value problem with unknown boundary. Solving this problem with an adjusted set of parameters from the standard version of the k-[epsilon] hypothesis gives excellent agreement with experimental data for center line and radial profiles of the mean and turbulent quantities, and also for the radius of themore »« less
https://doi.org/10.1016/0010-2180(93)90042-2
Opposed flow diffusion flame extensions

Conference Kinoshita, C M ; Pagni, P J ; Beier, R A - Symp. (Int.) Combust., (Proc.); (United States)

The Opposed Flow Diffusion Flame (OFDF) apparatus has been used for estimating the thermochemical properties of materials related to fire safety and for diffusion flame structure studies. The extension of the flame beyond the pyrolyzing fuel surface and the excess pyrolyzate are predicted. Since flame and stagnant plane locations may be sensitive to the usual Le.1 assumption, these additional predictions which are not so sensitive can provide useful estimates of fuel properties. Shvab-Zeldovich variables are used in analysis of steady, laminar, non-radiative, axisymmetric and Cartesian two-dimensional boundary layers. The thin diffusion flame lies within the boundary layer on the oxidantmore »« less

Similar Records