Convection flows driven by laser heating of a liquid layer

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Rivière , David ; Selva , Bertrand ; Chraibi , Hamza ; Delabre , Ulysse ; Delville , Jean-Pierre (2016)
  • Publisher: American Physical Society (APS)
  • Related identifiers: doi: 10.1103/PhysRevE.93.023112
  • Subject: [ PHYS.COND.CM-SCM ] Physics [physics]/Condensed Matter [cond-mat]/Soft Condensed Matter [cond-mat.soft]
    arxiv: Physics::Fluid Dynamics

International audience; When a fluid is heated by the absorption of a continuous laser wave, the fluid density decreases in the heated area. This induces a pressure gradient that generates internal motion of the fluid. Due to mass conservation, convection eddies emerge ... View more
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    4. Linear behavior of Tmax with Pabs power Pabs described in Sec. II B, Fig. 3(a). We then plotted separately on Fig. 12 the variation Tmax with Pabs at low powers for each thickness. We added on this figure the uncertainties on temperature measurements deduced from the Lorentzian fit. The linear behavior at small Pabs appears clearly for the three investegated thicknesses. We found Tmax = 1.9 ± 0.3 ◦C/mW for H = 185 μm (a), 1.5 ± 0.2 ◦C/mW for H = 310 μm (b) and 1.6 ± 0.2 ◦C/mW for H = 480 μm (c).

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