曲円管内乱流の実験的研究

抄録

Turbulence measurements are performed in curved circular tubes for three values of the ratio of coil to tube radius, R/a. Distributions of turbulence energy and axial and radial velocities are obtained in the fully developed flow with a hot wire anemometer. Turbulence energy and Reynolds stress become maximum at the position in the core region where turbulence generation becomes maximum. Turbulence generation and dissipation does not balance because of the convective effect induced by the secondary flow when R/a is mrall. Experimental results of the ratio of Reynolds stress to turbulence energy are compared with those of theoretical analysis.