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RISThe Feasibility of an Euler–Lagrange Approach for the Modeling of Wet Steam
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This study investigates the applicability of an Euler–Lagrange approach for the calculation of nucleation and condensation of steam flows. Supersonic nozzles are used as generic validation cases, as their high expansion ...
A Validated Unsteady Turbofan Engine Performance Simulation Using Pseudo Bond Graph Approach
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In this paper, the unsteady performance of a turbofan engine is illustrated and modeled using the pseudo-bond graph approach. The pseudo-bond graph method allows multiphysical and interdisciplinary systems to be described ...
Pumping Unit Power Density Improvement by Application of Counter Rotating Impellers Design
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In many industrial areas, downsizing the pumping system is a decisive aim of the designers. The reasons could be multiple means; in a singlestage pump, increasing the power density of the pump means actually reducing the ...
Brush Seal Frictional Heat Generation—Test Rig Design and Validation Under Steam Environment
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Sealing technology is a key feature to improve efficiency of steam turbines for both new power stations and modernization projects. One of the most powerful sealing alternatives for reducing parasitic leakages in the blade ...
Preliminary Wear Investigations With Pressure Actuated Leaf Seals for Superheated Steam Turbine Application
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Pressure actuated leaf seals (PALS) are a promising technology for the modern load-follow operation of power plants and turbines. Their strength lies in their radial adaptivity, which enables a significantly smaller radial ...
Brush Seals Used in Steam Environments—Chronological Wear Development and the Impact of Different Seal Designs
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: During the last decades, turbo machine efficiency was considerably increased by using more efficient seals. Brush seals, as a compliant contacting filament seal, have become an attractive alternative to conventional labyrinth ...
A Study on Quantities Driving Maintenance, Repair, and Overhaul for Hybrid-Electric Aeroengines
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Hybrid-electric propulsion for commercial aircraft is currently a key industry interest. Consequently, publications on its design and performance estimation are manifold. However, models addressing characteristics of ...
Surface Roughness Impact on Low-Pressure Turbine Performance Due to Operational Deterioration
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The overall efficiency and operational behavior of aircraft engines are influenced by the surface finish of the airfoils. During operation, the surface roughness significantly increases due to erosion and deposition ...
Potential of Future Thermoelectric Energy Recuperation for Aviation
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Germany's Fifth Aeronautical Research Program (LuFo-V) gives the framework for the thermoelectric energy recuperation for aviation (TERA) project, which focuses on the positioning of thermoelectricity by means of a holistic ...