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Showing 1 to 8 of 8 for “"Labyrinth Seals"”.
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Large Eddy Simulation of Labyrinth Seals and Rib Shapes for Internal Cooling Passges
… source of loss in turbomachinery. Therefore labyrinth seals are also investigated in this study, attempting to reduce the flow leakage and further increase the turbine efficiency. Large Eddy Simulation ( LES ) is used for its capability to capture the complex unsteady flow features in this …
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Study of Forces and Dynamic Coefficients in Whirling and Eccentric Labyrinth Seals Using ANSYS-CFX
Labyrinth seal force estimates are important to the prediction of the stability of turbomachinery. The force prediction methods fall into several categories: experiments, bulk flow analysis, and finite volume analysis. Finite volume analysis can be split into two subcategories: self-developed and …
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Analysis of aero-elastic forces in labyrinth seals and the design of an experimental facility to measure them
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics.
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Improvement of Labyrinth Seal Leakage Rates Using Additive Manufacturing
… using additive manufacturing to develop better labyrinth seals in turbomachinery. Labyrinth seals have a torturous fluid path with high losses, thus limiting the amount of fluid leakage. These types of seals can be non-rotating, allowing them to better take advantage of the additive …
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MEMS turbomachinery rotordynamics : modeling, design and testing
… and anisotropic journal bearing operation, labyrinth seals for reducing rotordynamic coupling, a redesigned turbine for satisfying power requirements, reinforced thrust bearing structural design, a novel rotor fabrication technology for achieving low radial imbalance and a symmetric feed …
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Surface Patterning and Rotordynamic Response of Annular Pressure Seals Used in Turbomachinery
… the annular pressure seal. The annular pressure seals are specifically designed to prevent the fluid leakage from high pressure stage to low pressure stage in turbomachinery. Typical annular pressure seals have two different flow regions, an annular jet-flow region between the rotor and stator, …
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Computational Fluid Dynamic and Rotordynamic Study on the Labyrinth Seal
The labyrinth seal is widely used in turbo machines to reduce leakage flow. The stability of the rotor is influenced by the labyrinth seal because of the driving forces generated in the seal. The working fluid usually has a circumferential velocity component before entering the seal; the ratio of …
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Oprava turbínové skříně
Tato diplomová práce se zabývá opravou parní protitlaké jednostňové turbíny. Práce je zadaná na konkrétní případ turbíny Spilling. Je zde zpracován revizní nález této turbíny s návrhem oprav nebo výměnou poškozených částí. Dále je provedena simulace kontaktního tlaku na dělící rovině skříně a jsou …