Two-dimensional turbulent jet on a combined wall having step changes in wall curvature

Noguchi, Y

Abstract

A study of a two-dimensional turbulent jet with a combination
of two wall curvature parameters has been made. The wall consists
of a plane, a logarithmic spiral and a plane surface. A large amount
of attention has been paid to establish good two-dimensionality and
to obtain best possible accuracy in the measurements with the hotwire
anemometer system. The development of the mean velocity
components, the three normal stresses and the shear stress are
presented. The effects of the sudden changes in curvature on the
structure of the flow are observed. The corrections of the hot-wire's
directional sensitivity are also evaluated and applied using third
order correlations. The correlations on the plane and the curved
surface show details of the large scale motions at the outer part
of the jet. The dissipation measurements have also been made.
These measurements enable the evaluation of the terms of the turbulent
kinetic energy equation. In addition, an attempt has been made to
calculate the development of the plane wall jet using the measured
turbulent kinetic energy balance to evaluate the empirical functions
in the governing equations. -The measured values have been also used
for the computation as the starting data.

Citation

Noguchi, Y. Two-dimensional turbulent jet on a combined wall having step changes in wall curvature. (Thesis). University of Salford

• Thesis Type: Thesis
• Deposit Date: Aug 17, 2011
• Publicly Available Date: Aug 17, 2011
• Award Date: Jan 1, 1985