Increasing Nozzle Blade Deposition on Steam Turbine C-9015A by Adding Parallel Grooved Surface

This paper presents a grooved surface for improving the nozzle blade C-9015A of wet-steam turbines in modern power plants by increasing the deposition of droplets after impact on the surface with the help of a parallel grooved surface. By putting the grooved surface in the direction of the steam flow on the surface of the nozzle, the angle between the surface and the impact of the droplets decreases. The smaller the angle between the surface and the impact of the drop, the more deposition of a droplet on the surface after impact. This article discusses the physics of droplet impact with different surfaces and droplet movement in steam flow. And finally, the results of the deposition due to the impact of drops with different diameters on the smooth blade surface and a grooved blade surface are compared with each other, and it is concluded from the results that the deposition of drops on the grooved blade surface is more than the deposition on the smooth blade surface.