Abstract
An experimental investigation was performed on turbulent channel flow with injection through a slit. Turbulent intensities of velocity fluctuation and Reynolds shear stress were measured in detail by a hot-wire anemometer. The statistical properties, i. e., length scales of turbulence, skewness/flatness factors and turbulent. diffusions, were investigated. Turbulent intensity and Reynolds shear stress increase by injection, however, the correlation coefficient of Reynolds shear stress depends slightly on injection and is constant across the channel. The turbulent diffusions ((u2v)^^-, (-uv2)^^-) are negative in the near-wall region. The result reveals that the sweep event of bursting is strengthened by injection.
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