Supersonic flows past an obstacle in Yukawa liquids
| Autor: | Rajaraman Ganesh, Harish Charan |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Physics
Shock (fluid dynamics) Yukawa potential Mechanics Condensed Matter Physics 01 natural sciences 010305 fluids & plasmas Physics::Fluid Dynamics symbols.namesake Mach number Speed of sound 0103 physical sciences Fluid dynamics symbols Supersonic speed 010306 general physics Choked flow Transonic Astrophysics::Galaxy Astrophysics |
| Zdroj: | Physics of Plasmas. 25:043706 |
| ISSN: | 1089-7674 1070-664X |
| Popis: | Shock formation, when a supersonic flow passes a stationary obstacle, is ubiquitous in nature. Considering particles mediating via a Yukawa-type interaction as a prototype for a strongly coupled complex plasma, characterized by coupling strength (Γ, ratio of the average potential to kinetic energy per particle) and screening parameter (κ, ratio of the mean inter-particle distance to the shielding length), we address the fundamental problem of supersonic fluid flow U0, past a stationary obstacle immersed in this strongly coupled system. We here report the results on the bow shocks formed in Yukawa liquids when the liquid flows at speeds larger than the speed of sound in the system. Depending on the values of Mach number MCL=U0CL, where CL is the longitudinal speed of sound in the system, the bow shocks are found to be either traveling or localized. We find that for the transonic flows (0.8 ≲MCL≲ 1.2), the bow shocks travel in the upstream direction opposite to the incoming fluid. The phase velocity of the... |
| Databáze: | OpenAIRE |
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