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RISStall Inception and Development in an Axial Flow Aeroengine
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper describes the phenomenon of stall and surge in an axial flow aeroengine using fast response static pressure measurements from the compressor of a Rolls-Royce VIPER engine. It details ...
Models for Predicting the Performance of Brayton-Cycle Engines
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Gas turbine performance is the result of choices of type of cycle, cycle temperature ratio, pressure ratio, cooling flows, and component losses. The output is usually given as efficiency (thermal, ...
Electrical Properties of Freshly Mixed Concrete
Publisher: American Society of Civil Engineers
Abstract: The current procedures for the design of concrete mixes are based on specifying target workability and strength. Graphs are then used to determine the masses of constituent materials. Small changes in initial water content ...
Behavior of Air in the Rotor of a Model Mixed-Flow Pump Operating at Peak Efficiency
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The behavior of air in a model of a mixed-flow bowl pump has been investigated using a laser-Doppler anemometer. Velocity measurements were obtained at a number of sections within, upstream ...
Low-Leakage Modular Regenerators for Gas-Turbine Engines
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: One of the significant problems plaguing regenerator designs is seal leakage resulting in a reduction of thermal efficiency. This paper describes the preliminary design and analysis of a new ...
Modeling Municipal Solid Waste Collection Systems Using Derived Probability Distributions. I: Model Development
Publisher: American Society of Civil Engineers
Abstract: This paper presents a derived probability model that can be used to estimate vehicle and labor requirements for municipal solid waste collection systems. The model consists of closed-form solutions for important performance ...
Modeling Municipal Solid Waste Collection Systems Using Derived Probability Distributions. II: Extensions and Applications
Publisher: American Society of Civil Engineers
Abstract: Three applications are used to demonstrate the utility of a derived probability model of curbside solid waste collection. First, the model is used to estimate the time required to collect waste from a route when the vehicle ...
A Mechanical Composite Spheres Analysis of Engineered Cartilage Dynamics
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In the preparation of bioengineered reparative strategies for damaged or diseased tissues, the processes of biomaterial degradation and neotissue synthesis combine to affect the developing mechanical ...
Fluidization in an Anaerobic EGSB Reactor: Analysis of Primary Wakes and Modeling of Sludge Blanket
Publisher: American Society of Civil Engineers
Abstract: Fluidization of biogranules in an anaerobic expanded granular sludge bed (EGSB) reactor is stochastic in nature and it is a function of the size distribution and the frequency of generation of flow-through gas bubbles in ...
Experiments in Active Control of Stall on an Aeroengine Gas Turbine
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper describes work carried out between 1989 and 1994 to investigate the application of “Active Stall Control” to a Rolls-Royce Viper turbojet. The results demonstrate that stall control ...