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RISAssessment of Rotordynamic Characteristics for Two Types of Damper Seals Operating in a Steam Turbine
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Damper seals (such as pocket damper seal (PDS), hole-pattern/honeycomb damper seals) and swirl brakes have been commonly used for many years as a solution for the rotor vibration instability in multiple-stage centrifugal ...
Sensitivity Analysis of the Static and Rotordynamic Characteristics on Geometric Parameters for a Supercritical Carbon Dioxide Hole-Pattern Damper Seal
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Hole-pattern damper seal (textured stator with numerous circular-hole cavities and smooth rotor) is a typical annular damper seal that is gradually used in modern turbomachinery as a replacement of the conventional labyrinth ...
Inlet Preswirl Effects on the Leakage and Dynamic Characteristics of a Labyrinth Seal: Experimental Results and Computational Fluid Dynamics Analysis
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Fluid-induced forces generated by annular gas seals have aroused considerable attention owing to their substantial impact on the rotordynamic stability of turbomachinery. Positive preswirl at the seal entrance has been ...
Ni-ZIF-8@ZIF-67-Derived Bimetallic Doped Pt-Based Carbon Catalyst for Hydrogen Evolution Reaction
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The development of highly active and stable electrocatalysts is a major challenge for water electrolysis. In this work, we designed bimetallic nitrogen-doped carbon (NiCo-NC) materials with excellent performance, which ...