With an increase in fluid densities centrifugal compressors, fluid-structure interaction and coupled acoustoelastic modes receive growing attention to avoid machine failure. Besides the vibrational behavior of impeller, acoustic building up side cavities need be understood ensure safe reliable operation. In a system, these structure dominant influence each other. Therefore, comprehensive overvi...

The aerodynamics of centrifugal compressors is a topical issue, as the vibrations and noise reduce comfort people who are in proximity to compressor. current trend rotating machinery research therefore not only concerned with performance parameters but also increasingly effect on humans. An analysis aerodynamic based external acoustic field measurements may be way assess nature excitation. In t...

arguably, the natural gas transmission pipeline infrastructure in iran represents one of the largest andmost complex mechanical systems in the world. the optimization of large gas trunk lines known asigat results in reduced fuel consumption or higher capability and improves pipeline operation. in thecurrent study, a single-objective optimization was conducted for khormoj compressor station on t...

XML simplifies data exchange amongst disparate computers, but is notoriously verbose and has spawned development of a variety of XML compressors and binary formats. Some formats allow streaming access to the data without complete decompression. We present an XML test file corpus, akin to corpora such as the Canterbury corpus and a combined efficiency metric integrating compression ratio and spe...

BACKGROUND There is little information on the costs of maintaining a district nebuliser compressor service. This retrospective study examines the issue, reliability, and maintenance costs of electrical compressors to assist the prediction of future costs, taking into account recent safety legislation. METHODS Records of issue, repair, and replacement for the period 1982-91 were reviewed. The ...

The practice of designing centrifugal compressors in which impellers are the main components shows that there reserves for their further improvement. One consists improving flow conditions compressed medium compressor setting and, above all, impeller. A method geometric modeling settings was proposed involves construction meridional boundaries and blade profile on an involute cylindrical surfac...

The design of a family of efficient oil-flooded twin screw air compressors was performed at City University London for Elgi Equipments Coimbatore, India. It was carried out using a software package, which included almost every aspect of the rotor profiling and compressor thermodynamic and geometric modelling with the capacity to transmit calculated output directly into a CAD drawing system. Rac...