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RISAn Extended Operational Modal Analysis Method Enabling the Separation of Whirling Direction Information in Rotating Machinery (Full Operational Modal Analysis Method)
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Operational modal analysis (OMA) has recently been applied to the condition monitoring of rotating machinery. Conventional OMA is based on a one-dimensional signal. The natural modes of a rotating machinery can be classified ...
Performance Degradation and Flow Instability of Axial-Flow Fan Due to Upstream Obstacle
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper elucidates the performance degradation and flow instability of an axial fan caused by the presence of disk-shaped obstacles upstream of the fan, such as wall surfaces. The increase in pressure loss and the ...