Modeling stable and unstable detonations with boundary layer induced flow divergence

The phenomenon of near-limit detonation propagation, where detonations have been experimentally observed to propagate at average speeds smaller than the ideal Chapman-Jouguet (CJ) detonation speeds, has attracted extensive efforts on determining the influencing mechanisms through application of simple models for predicting such velocity deficits. Despite the large number of attempts to experimentally investigate the dynamics of detonations in the presence of losses due to boundary layers, there have been no attempts at incorporating boundary layer loses into simulation. Due to the fact that information extracted from experiments can be very limited, owing to the high speed nature of detonations, and their corresponding time scales, it is necessary to develop the relevant simulation strategy to aid in the analysis of such critical-limit detonation waves, and to determine the influencing mechanisms. On the other hand, existing simulations just focus on the ideal CJ detonations instead of the real detonations with losses. Therefore, it would be significant to develop a numerical strategy for appropriately simulating such non-ideal detonations by considering the boundary layer induced losses.

Faculty Supervisor:

Matei Radulescu

Student:

Partner:

Case Western Reserve University

Discipline:

Engineering

Sector:

Aerospace; Technology; Oil and Gas

University:

University of Ottawa

Program: