Abstract
The vertical distribution of the upward velocity and the temperature in the convection stream from a heat source in a calm atmosphere was discussed. The author solved the problem on the lines of Prandtl’s mixing length hypothesis and the three dimensional problem from a point source of heat and the two dimensional problem above a long line source were treated. The results are as follows ;
r∝r-1/3, Δθ∝z-τ/3………a point source of heat.
ω=constant, Δθ∝z-1………a long line source of heat, where ω and Δθ are the upward velocity and the difference between the temperature of the stream and that of ambient air respectively, z is the vertical distance from a source. These results were checked by the experiments. The vertical distribution of the upward velocity and temperature in the ascending stream from the burning alcohol and electric heater were measured.
