This study investigates shock wave interactions with two tandem water droplets and the resultant cavitation phenomena through high-resolution numerical simulations. Building on prior research focused on individual droplets, this work explores the influence of a neighboring droplet on shock propagation and cavitation dynamics. Utilizing a volume of fluid method combined with a cavitation model, the simulations track pressure variations and shock wave behaviors across multiple configurations, varying both shock strength and droplet spacing. By incorporating the effects of liquid compressibility, the study captures detailed pressure fluctuations and wave dynamics critical to accurately predicting cavitation onset. Results demonstrate that when a shock wave initially impacts the first droplet, pressure waves reflect and transmit within and around the droplet, generating expansion waves that initiate cavitation. With tandem droplets, the distance between them affects the intensity of the transmitted shock wave reaching the second droplet, thereby influencing cavitation formation. Shorter distances promote higher shock intensities in the second droplet, while longer distances allow for alignment along the symmetry line, which moderates the shock’s impact. The findings underscore the importance of interdroplet spacing and shock strength in tandem configurations, providing valuable insights for practical applications involving shock interactions with liquid droplets in fields such as fuel injection, spray dynamics, and multiphase flow systems.
This study used advanced computer simulations to examine how shock waves interact with pairs of water droplets. The research provides new insights into the role of droplet spacing and shock strength in triggering cavitation, a process where tiny vapor bubbles form inside the droplets. Such phenomena are of practical importance in several industries, including aerospace, fuel injection systems, and spray cooling technologies, where fluid behavior under shock conditions can significantly influence performance and durability. For example, in aerospace fuel systems, controlling cavitation can lead to improved engine efficiency and longer component life. The findings from this study indicate that by adjusting the distance between droplets and the intensity of shock waves, it is possible to manage the formation and collapse of vapor bubbles. This understanding can guide engineers in designing systems that minimize unwanted cavitation effects, thereby enhancing safety and operational reliability. Overall, this research bridges the gap between theoretical fluid dynamics and real-world applications, offering valuable insights for practitioners and contributing to the development of more efficient, robust engineering solutions.
Shock Wave Impact on Tandem Droplets: Analyzing Cavitation and Pressure Wave Dynamics
Journal of Aerospace Engineering ; 38 , 6
01.11.2025
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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