Abstract
Conservative, Consistent All-Mach Method to Simulate Liquid Atomization in Supersonic Flows
Highlights
Atomization of bulk liquids subjected to a supersonic flow is essential to different applications such as such as lithotripsy, raindrop damage in supersonic flight, and liquid fuel injection in supersonic propulsion systems
Detailed numerical simulations (DNS), which fully resolves the sharp interfaces and the interaction between the interfaces and the shocks, are essential to the investigation of atomization, since it can provide the high-level details that are hard to diagnose in experiments, including the interfacial dynamics and instability, the shock-interface interaction, and the interfacial topology changes
To fully resolve compressible interfacial multiphase flows that arise from supersonic atomization, the governing conservation laws must be solved by numerical methods that can well capture the sharp interface, the shock waves, and the interaction between them
Summary
Atomization of bulk liquids subjected to a supersonic flow is essential to different applications such as such as lithotripsy, raindrop damage in supersonic flight, and liquid fuel injection in supersonic propulsion systems. To fully resolve compressible interfacial multiphase flows that arise from supersonic atomization, the governing conservation laws must be solved by numerical methods that can well capture the sharp interface, the shock waves, and the interaction between them. To improve the accuracy in surface tension calculation, the method was extended by the same authors using a algebraic VOF method, i.e., the Tangent of Hyperbola for Interface Capturing (THINC) method [10], to resolve the sharp interfaces [5]. The present study aims at extending the method of Fuster and Popinet (FP) to enable direct numerical simulation of compressible interfacial multiphase flows with interaction between shock waves and interfaces. Different test problems are simulated to examine the capability of the present method in capturing shock-interface interaction and the resulting interfacial dynamics and instability when finite viscosity and surface tension are present
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