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(Left axis; solid lines) Droplet spreading over time. (Right axis; dashed lines) Droplet displacement over time.
Source publication
Detonation-based propulsion devices, such as rotating detonation engines (RDEs), must be able to leverage the higher energy densities of liquid fuels in order for them to be utilized in practical contexts. This necessitates a comprehensive understanding of the physical processes and timescales that dictate the shock-induced breakup of liquid drople...
Contexts in source publication
Context 1
... the droplet acceleration and deformation have been identified as key parameters influencing the breakup processes [22,51,52]. To quantify these, Fig. 6 shows the droplet displacement and spreading as a function nondimensional time. The displacement is computed using the minimum x-coordinate at which liquid is identified, and the results are compared to the experimental fit of Hébert et al. [52]. The spreading is computed as the maximum radial coordinate at which liquid is identified, ...
Context 2
... both quantities are computed by considering computational cells where α l ≥ 0.99. This allows r max to be more closely align with the deformation of the contiguous droplet and its ligaments, rather than the spray of atomized secondary droplets. The dashed profiles in Fig. 6 show that the droplet acceleration is similar in both cases up to τ ∼ 1.4, after which point the profiles begin to diverge. This divergence may be expected due to the differences in ligament formation and pierced droplet morphology visible in Figs. 4-5. The close agreement between these profiles and the experimentally-derived empirical ...
Context 3
... solid profiles in Fig. 6 show that similar droplet deformation is observed in both cases up to the conclusion of the M s = 2 simulation at τ ∼ 2. This selfsimilarity in droplet deformation for different shock Mach numbers has been noted in several previous experimental works [11,[56][57][58]. The deformation is initially wellapproximated by the Burgers ...
