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RISStudy on Flow and Heat Transfer Characteristics of a New-Proposed Alternating Elliptical U-Channel in the Midchord Region of Gas Turbine Blade
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper proposed an alternating elliptical U-bend cooling channel, which can be applied in the midchord region of gas turbine blade and manufactured by precision casting, based on the optimal flow field structure deduced ...
Multiparameter Optimization to Improve the Erosion Resistance of Coating by Finite Element Simulation
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Finite element method (FEM) was used to study the stress peak of stress S11 (radial stress component in X-axis) on the steam turbine blade surface of four typical erosion-resistant coatings (Fe2B, CrN, Cr3C2–NiCr and ...
Heat Transfer Characteristics of the Multicavity Tips at Different Turbulence Levels
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A comprehensive understanding of the tip heat transfer characteristics is important to the blade tip design. In this work, the heat transfer coefficient (h) data of several multicavity tips was measured using a steady-state ...
Effects of Inlet Preswirl and Cell Diameter and Depth on Honeycomb Seal Characteristics
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Three-dimensional Reynolds-averaged Navier–Stokes solutions are employed to investigate the discharge and total temperature increase characteristics of the stepped labyrinth seal with honeycomb land. ...
Investigation of Leakage Flow and Heat Transfer in a Gas Turbine Blade Tip With Emphasis on the Effect of Rotation
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Numerical analysis was applied to investigate the effect of rotation on the blade tip leakage flow and heat transfer. Flows around both flat and squealer tips at the first stage rotor blade ...
Influence of Mainstream Turbulence Intensity on Heat Transfer Characteristics of a High Pressure Turbine Stage With Inlet Hot Streak
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: An unsteady computational study was carried out on GEE3 high pressure (HP) turbine at inflow turbulence intensities of 5%, 10%, and 20% accompanying with inlet hot streak (HS) at two circumferential positions (impinging ...
Comparisons of Rotordynamic Characteristics Predictions for Annular Gas Seals Using the Transient Computational Fluid Dynamic Method Based on Different Single Frequency and Multifrequency Rotor Whirling Models
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The threedimensional (3D) transient computational fluid dynamic (CFD) method was proposed to predict rotordynamic coefficients for annular gas seals. This transient CFD method uses unsteady ReynoldsAveraged Navier–Stokes ...
Investigations on the Rotordynamic Characteristics of a Hole-Pattern Seal Using Transient CFD and Periodic Circular Orbit Model
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Numerical investigations on the rotordynamic characteristics of a typical hole-pattern seal using transient three-dimensional Reynolds-averaged Navier–Stokes (RANS) solution and the periodic circular ...
Unsteady Analysis on the Effects of Tip Clearance Height on Hot Streak Migration Across Rotor Blade Tip Clearance
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper presents an investigation on the hot streak migration across rotor blade tip clearance in a high pressure gas turbine with different tip clearance heights. The blade geometry is taken from the first stage of ...
Numerical Investigations on the Leakage and Rotordynamic Characteristics of Pocket Damper Seals—Part II: Effects of Partition Wall Type, Partition Wall Number, and Cavity Depth
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Effects of partition wall type, partition wall number and cavity depth on the leakage and rotordynamic characteristics of the pocket damper seal (PDS) were numerically investigated using a presented 3D transient computational ...