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RISInfluence of Loading Distribution on the Off-Design Performance of High-Pressure Turbine Blades
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Linear cascade measurements for the aerodynamic performance of a family of three transonic, high-pressure (HP) turbine blades have been presented previously by the authors. The airfoils were ...
Effect of Geometry on the Performance of Radial Vaneless Diffusers
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The paper presents measurements of the steady aerodynamic characteristics of a series of five radial vaneless diffusers with walls varying from mildly divergent to strongly convergent. The static ...
Development of the Tip-Leakage Flow Downstream of a Planar Cascade of Turbine Blades: Vorticity Field
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The paper presents detailed measurements of the tip-leakage flow emerging from a planar cascade of turbine blades. Four clearances of from 1.5 to 5.5 percent of the blade chord are considered. ...
Measurements of the Flow in an Idealized Turbine Tip Gap
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: To gain further insights into the details of the tip-gap flow in axial turbines, a test section has been constructed with a single idealized, large-scale tip gap. The single “blade” forms a ...
Effects of Tip Clearance on Blade Loading in a Planar Cascade of Turbine Blades
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The paper examines in detail the structure of the tip leakage flow and its effect on the blade loading in a large-scale planar cascade of turbine blades. The tip clearance was varied from ...
Flow Field in the Tip Gap of a Planar Cascade of Turbine Blades
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Measurements are presented for the flow in the tip gap of a planar cascade of turbine blades. Three clearances of from 2.0 to 3.2 percent of the blade chord were considered. Detailed surveys ...
Effects of Simulated Rotation on Tip Leakage in a Planar Cascade of Turbine Blades: Part I—Tip Gap Flow
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The paper presents further results from a continuing study on tip leakage in axial turbines. Rotation has been simulated in a linear cascade test section by using a moving-belt tip wall. ...
Prediction of Tip-Leakage Losses in Axial Turbines
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Existing methods for predicting the tip-leakage losses in turbomachinery are based on a variety of assumptions, many of which have not been fully verified experimentally. Recently, several detailed ...
An Empirical Prediction Method for Secondary Losses in Turbines—Part I: A New Loss Breakdown Scheme and Penetration Depth Correlation
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Despite its wide use in meanline analyses, the conventional loss breakdown scheme is based on a number of assumptions that are known to be physically unsatisfactory. One of these assumptions ...
An Empirical Prediction Method For Secondary Losses In Turbines—Part II: A New Secondary Loss Correlation
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A new empirical prediction method for design and off-design secondary losses in turbines has been developed. The empirical prediction method is based on a new loss breakdown scheme, and as ...