THE INFLUENCE OF THE INLET ANGLE OVER THE RADIAL IMPELLER GEOMETRY DESIGN APPROACH WITH ANSYS

Abstract

<p>This paper presents in brief an own application (numerical code) for quick design of the turbo machines impellers. Based on this numerical method, this paper analyses the influence of the blades’ angles on the radial impeller geometry from the centrifugal pumps: the influence of the inlet and outlet angles of the blades over the hydraulic channel size, over the number of the blades and over the blades’ angular extension. In centrifugal pumps design, a special attention must be given of the impeller inlet and outlet angles. These influences include also the pump efficiency, for 1-2 percent. <br />The impeller design methods starting from the pump flow, the head, the rotation speed and ranging blades inlet and outlet angles, gives completely the impeller geometry - the suction and discharge diameters of the impeller, the number of blades and the size and shape of the hydraulic channel and estimates the efficiency for centrifugal pumps.<br />Once the impeller geometry established, the dates were imported in ANSYS code, for graphical design and 3D visualization of the radial impeller, also for the streamlines flowing visualization.</p>