自然対流乱流境界層の数値解析

概要

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A new model for predicting turbulent natural convection boundary layers has been developed. In this model, a velocity fluctuation is assumed to be composed of two components, i.e., one represents a forced convection component and the other a buoyancy-influenced component. The turbulence quantities are modelled with reference to the improved two-equation models for forced convection flows. Owing to the strong reaction of the temperature upon the velocity field, the modelled transport equations for the temperature field are solved simultaneously. the validity of the present model has been tested by application to a typical natural convection from a vertical heated plate. The numerical solutions showed that the present predictions fit the experimental results very well, while the existing turbulence models ended in failure.
一般社団法人日本機械学会の論文
1989-06-25