Ignition and flame propagation studies with adaptive numerical grids

✍ Scribed by H.A. Dwyer; B.R. Sanders; F. Raiszadek

• Publisher: Elsevier Science
• Year: 1983
• Tongue: English
• Weight: 682 KB
• Volume: 52
• Category: Article
• ISSN: 0010-2180
• DOI: 10.1016/0010-2180(83)90117-7

✦ Synopsis

A new and efficient numerical method has been developed to calculate time dependent, multidimensional flames. This method adapts the grid in an intelligent or solution dependent fashion so that the physics and chemistry of the flow are properly resolved. The method has the greatest advantages for thin flames, and is always to be preferred in steady flows. For two-dimensional problems the new method of combination with generalized coordinates leads to impressive resolution of ignition and flame propagation phenomena. For the study of ignition and flame propagation about a sphere in constant density separated flow the results showed that the ignition process occurs slightly downstream of the separation point and not at the rear stagnation point. All flame propagation calculations have been completed without problems due to oscillations or numerical viscosity, which are effectively eliminated with this new technique.