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Kvantovaya Elektronika, 1993, Volume 20, Number 12, Pages 1185–1190 (Mi qe3278)  

This article is cited in 3 scientific papers (total in 3 papers)

Effect of laser light on matter. Laser plasmas

Thermocapillary instability in deep weld keyholes

V. I. Ledenev, F. Kh. Mirzoev

Research Centre for Technological Lasers Russian Academy of Sciences, Shatura, Moscow region
Full-text PDF (201 kB) Citations (3)
Abstract: A theory is derived for the onset of a thermocapillary instability at the wall of the vapor-gas cavity formed during deep-penetration welding of metals by intense laser radiation. The basic physical factors causing the instability are identified. The quantitative conditions for its occurrence are derived. The curve of neutral (monotonic) stability is derived analytically. This curve relates the critical Marangoni number (or the intensity of the laser radiation) to the parameters of the wave perturbations and properties of the medium. When the thermocapillary effect and capillary perturbations of the free surface are taken into account simultaneously, the threshold for stability of the melt with respect to monotonic perturbations is lowered, particularly at small wave numbers. Estimates of the critical intensities of the laser radiation found here lie in the range (3–6) · 109 W/m2. This range corresponds roughly to the conditions prevailing during the laser processing of metals under deep penetration conditions.
Received: 19.03.1993
English version:
Quantum Electronics, 1993, Volume 23, Issue 12, Pages 1030–1034
DOI: https://doi.org/10.1070/QE1993v023n12ABEH003278
Bibliographic databases:
Document Type: Article
UDC: 621.373.826
PACS: 42.62.Cf, 47.55.dm, 61.80.Ba, 61.82.Bg
Language: Russian


Citation: V. I. Ledenev, F. Kh. Mirzoev, “Thermocapillary instability in deep weld keyholes”, Kvantovaya Elektronika, 20:12 (1993), 1185–1190 [Quantum Electron., 23:12 (1993), 1030–1034]
Linking options:
  • https://www.mathnet.ru/eng/qe3278
  • https://www.mathnet.ru/eng/qe/v20/i12/p1185
  • This publication is cited in the following 3 articles:
    1. V.V. Osipov, V.V. Platonov, M.V. Trigub, E.V. Tikhonov, N.A. Vasnev, P.I. Gembukh, N.M. Zubarev, E.A. Kochurin, International Journal of Heat and Mass Transfer, 223 (2024), 125237  crossref
    2. N. Kumar, S. Dash, A. K. Tyagi, B. Raj, Science and Technology of Welding and Joining, 12:6 (2007), 540  crossref
    3. F. Kh. Mirzoev, V. Ya. Panchenko, L. A. Shelepin, Phys. Usp., 39:1 (1996), 1–29  mathnet  mathnet  crossref  crossref  isi
    Citing articles in Google Scholar: Russian citations, English citations
    Related articles in Google Scholar: Russian articles, English articles
    Квантовая электроника Quantum Electronics
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    Abstract page:140
    Full-text PDF :73
     
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