This article provides a summarizing account of the results obtained in current collaborative work four research institutes concerning near-wall flow turbomachinery. Specific questions regarding influences boundary layer development on blades and endwalls as well loss mechanisms due to secondary are investigated. These address skewness, periodical distortion, wake interaction heat transfer, amon...

This paper introduces a test rig which is developed by the authors to evaluate the carbon deposit tendency of oils used in reciprocating compressors. The type of the compressors used for the rig, the rules of their operation, the indexs of carbon deposit tendency in a given period of test operation are reasonably determined in the paper. The main principles of determination of all these conditi...

The onset of rotating stall and surge in compressors limits the operating range aero-engines. Accurately predicting key features during these events is critical engine design process. In this paper, a three-dimensional computational model for transient simulation multi-stage axial proposed. kinetic equations describing dynamic process compression system are constructed, with 3D through-flow par...

Multiplication represents a fundamental building block in all DSP tasks. Due to the large latency inherent in multiplication, methods have been devised to minimize the delay. Two methods are common in current implementations: regular Arrays and Wallace trees. For higher order multiplications, a huge number of adders are to be used to perform the partial product addition. Reduction of adders by ...

CDA(Compressed Dry Air) is an essential utility to be used in a variety of processes in LCD(Liquid Crystal Display) production industry. Since the demands for CDA fluctuate largely from moment to moment, it is common to supply compressed air with a number of small-capacity compressors rather than few large-capacity ones. In order to meet the varying demands, operation conditions of compressors ...

Abstract—In the current mine air compressors monitoring system, there are some difficulties in the installation and maintenance because of the wired connection. To solve the problem, this paper introduces a new air compressors monitoring system based on ZigBee in which the monitoring parameters are transmitted wirelessly. The collecting devices are designed to form a cluster network to collect ...