On the Features of Convection in a Compressible Gas


  • Igor Palymskiy Department of Physics, Siberian State University of Telecommunications and Information Sciences, Novosibirsk, Russia; Siberian State University of Geosystems and Technologies, Novosibirsk, Russia


Rayleigh-Bénard convection, compressible media, Boussinesq approach, superadiabatic regime


The problem of Rayleigh-Bénard convection in a compressible, viscous and heat-conducting gas is considered. By solving a complete nonlinear system of equations of gas dynamics, we present a neutral curve for air under normal conditions as a function of the domain height. The formula for the critical height of the domain is derived analytically. The isobaric convection regime is realized when the height of the region is less than the critical value, but the regime becomes superadiabatic with the height of the region exceeding this critical value. Convection in the superadiabatic regime results in adiabatic suppression. The limits of applicability of the Boussinesq approach are determined within the framework of the isobaric convection regime.




How to Cite

Palymskiy, I. (2023). On the Features of Convection in a Compressible Gas. Journal of Advanced Research in Numerical Heat Transfer, 11(1), 29–35. Retrieved from https://www.akademiabaru.com/submit/index.php/arnht/article/view/4601