Search Results

Experiments were conducted at the rotor inlet of a 110 mm turbocharger radial inflow turbine wheel to study the effect of changes in A/R on the flow field entering the rotor. A three-port cobra probe was traversed axially above the rotor tip to obtain velocity triangles at a wide range of operating conditions at each of three different A/R vane settings. In addition, values of the rotor inlet mass average properties are presented.

The results of laser velocimeter measurements in the inlet region of a radial inflow turbine are presented. Velocity and flow angle measurements were made in a number of locations upstream and downstream of the rotor tip. Experimental results were compared to those calculated by a potential flow model. The experimental and calculated results agreed well in velocity magnitudes and velocity gradient directions. Agreement was qualitatively good for angular data in that angular contour shapes were similar but differed in magnitude by about 6 degrees. Potential flow models can serve as an initial solution to more complicated flow models due to the potential nature of the measured flow at the inlet.