Boundary layer in compressible flow of wet water vapour |
| |
Authors: | Wojciech Studziński |
| |
Affiliation: | Institute of Fluid-Flow Machinery, Gas Dynamics Division, Fiszera 14, 80-952 Gdansk, Poland |
| |
Abstract: | In this paper the influence of small droplets, with radius , on laminar and turbulent boundary layer behavior is considered. It is found that the laminar boundary layer in a two-phase flow with strongly dispersed liquid retains dissipation energy and that the recovery factor of enthalpy is greater than unity. In turbulent boundary layers small droplets are transported by turbulent diffusion and this leads to the recovery factor being less than unity. Its value in both cases depends mainly on the nondimensional number . The laminar boundary layer solution for non-equilibrium two-phase flow is obtained. Profiles of the droplet mass fraction, vapour and droplets temperatures and droplet radius are computed for the case of a steady two-dimensional flow. The turbulent boundary layer is treated using a semi-empirical theory assuming thermodynamic equilibrium. |
| |
Keywords: | |
本文献已被 ScienceDirect 等数据库收录! |
|