Observation of laser-induced microscale vortex ring interactions on vaporizing metal surface (CROSBI ID 81950)
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Lugomer, Stjepan
engleski
Observation of laser-induced microscale vortex ring interactions on vaporizing metal surface
Laser-induced microscale vortex rings have been generated on vaporizing tantalum surface, and their reconnection was studied in the presence of shock waves on the nanosecond time scale. A rich spectrum of the ring structures was obtained, some of which have been observed for the first time. Qualitatively, three classes of interactions are distinguished on the basis of relative relation of the shock momentum Ps and momentum of the circulating fluid Pc: interactions in the presence of low momentum shock waves (Ps < Pc), of the shock waves with a momentum comparable to the momentum of the circulating fluid (Ps ≈ Pc) and of the shock waves with a momentum larger than momentum of the circulating fluid (Ps > Pc).
laser-induced microscale vortex rings; tantalum surface; reconnection of rings; shock waves; ring structures
nije evidentirano
hrvatski
Opažanje međudjelovanja mikronskih laserski–induciranih vrtložnih prstenova na površini tantala
Laserski inducirani vrtložni prstenovi mikronske veličine generirani su na površini tantala. Njihova su se prespajanja proučavala pod djelovanjem udarnih valova u nanosekundnim vremenskim intervalima. Proizveden je bogat spektar struktura vrtložnih prstenova, od kojih su neki opaženi prvi puta. Kvalitativno, njihova se međudjelovanja mogu razvrstati u tri klase na osnovi impulsa udarnih valova, Ps, i impulsa cirkulirajućeg fluida, Pc: Ps < Pc, Ps ≈ Pc i Ps > Pc.
laserski–inducirani vrtložni prstenovi; površina tantala; udarni valovi
nije evidentirano
