Numerical analyses concerning the spatial dynamics of an initially plane gaseous ZDN detonation

摘要: The investigation of detonation dynamics and cellular structure is important to find criteria for the establishment failure a detonation. Recent large-scale experiments have shown that scale geometric effects strongly influence ability fuel/air mixture propagate or sustain chance deflagration will undergo transition starting point used numerical code steady, choked flow correspondding Chapman-Jouguet implementation realistic reaction kinetics leads by means integration well-known Zeldovich-Doring-von Neumann (ZDN) steady structure. In this paper we show methods analysis ZDN based on themochemical equilibrium turns out be catastropically unstable. reference system fixed front, applied scheme yields spontaneous transverse wave channel width initial pressure spacing studied compared with experimental outcomes. eigenvalue character cell size its dependence are demonstrated. From results correspondence principle can derived, which expresses vanishing characteristic an increasing number acoustic modes. Copyright © 1988 Government West Germany. Permission published American Institute Aeronautics Astronautics. All rights reserved. * Research Assistant, Department Mechanical Engineering t Professor, 4 S. U. SCHOFFEL AND F. EBERT