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ISRN Mechanical Engineering
Volume 2012 (2012), Article ID 475607, 11 pages
http://dx.doi.org/10.5402/2012/475607
Research Article

Verification, Validation, and Testing of Kinetic Mechanisms of Hydrogen Combustion in Fluid-Dynamic Computations

Institute of Space Propulsion, German Aerospace Center (DLR), Lampoldshausen, 74239 Hardthausen, Germany

Received 21 May 2012; Accepted 13 June 2012

Academic Editors: F. Liu and B. Yu

Copyright © 2012 Victor P. Zhukov. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

A one-step, a two-step, an abridged, a skeletal, and four detailed kinetic schemes of hydrogen oxidation have been tested. A new skeletal kinetic scheme of hydrogen oxidation has been developed. The CFD calculations were carried out using ANSYS CFX software. Ignition delay times and speeds of flames were derived from the computational results. The computational data obtained using ANSYS CFX and CHEMKIN, and experimental data were compared. The precision, reliability, and range of validity of the kinetic schemes in CFD simulations were estimated. The impact of kinetic scheme on the results of computations was discussed. The relationship between grid spacing, time step, accuracy, and computational cost was analyzed.