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- W4287183290 abstract "One strategy for arresting propagating detonation waves in pipes is by imposing a sudden area enlargement, which provides a rapid lateral divergence of the gases in the reaction zone and attenuates the leading shock. For sufficiently small tube diameter, the detonation decays to a deflagration and the shock decays to negligible strengths. This is known as the critical tube diameter problem. In the present study, we provide a closed form model to predict the detonation quenching for 2D channels. Whitham's geometric shock dynamics, coupled with a shock evolution law based on shocks sustained by a constant source obtained by the shock change equations of Radulescu, is shown to capture the lateral shock dynamics response to the failure wave originating at the expansion corner. A criterion for successful detonation transmission to open space is that the lateral strain rate provided by the failure wave not exceed the critical strain rate of steady curved detonations. Using the critical lateral strain rate obtained by He and Clavin, a closed form solution is obtained for the critical channel opening permitting detonation transmission. The predicted critical channel width is found in very good agreement with our recent experiments and simulations of diffracting H$_2$/O$_2$/Ar detonations." @default.
- W4287183290 created "2022-07-25" @default.
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- W4287183290 date "2021-05-10" @default.
- W4287183290 modified "2023-10-17" @default.
- W4287183290 title "On the self-similarity of diffracting gaseous detonations and the critical channel width problem" @default.
- W4287183290 doi "https://doi.org/10.48550/arxiv.2105.04481" @default.
- W4287183290 hasPublicationYear "2021" @default.
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