A two-dimensional Coanda nozzle jet flow which is formed by interaction of two symmetric curved wall jet after a circular cylinder is investigated by changing the initial conditions-nozzle exit velocity and the nozzle exit width.
Many of data measured by hot-wire anemometer are compared to those of plane wall jet and two-dimensional free jet. It is found that there exits universal nondimensional static pressure distribution on the circular cylinder irrespective of initial conditions. Mean velocity profiles of the curved wall jet shows a similarity at θ=50˚, 60˚ and 70˚, but the velocity fluctuations did not show any similarity at there.
The position and the magnitude of the minimum contraction area is not changed by changing the initial condition. Even though the velocity fluctuations have large magnitude just after the circular cylinder, they are somewhat lower than those of the conventional two-dimensional jet at the self-preserving region.
