Study on propagation characteristics of laser in turbulent Rayleigh–Bénard thermal convection

Abstract

The turbulent Rayleigh–Bénard (R–B) convection system contains the plume and the large-scale circulation structure, which causes the statistical inhomogeneity of the flow field. The high coherence of the laser leads to the completely different transmission characteristics in the R–B flow field than in the free space. In this study, the transient scattering field of the laser in the R–B flow field is calculated by using the Maxwell numerical integration method under the Rytov approximation. The experimental device was designed, the comparison experiment was carried out, and several satisfactory contrast results were given.

Keywords

• numerical analysis
• benard convection
• turbulence
• rayleigh-benard instability
• maxwell equations
• flow field
• maxwell numerical integration method
• propagation characteristics
• turbulent rayleigh–bénard convection system
• large-scale circulation structure
• statistical inhomogeneity
• transient scattering field
• transmission characteristics