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If a linear turbine cascade experimental apparatus uses only few cascade model, it has several advantages in experiment, such as increasing the accuracy of experimental result by applying bigger turbine cascade model on the same apparatus without increasing compressor power, and easy access of optical devices within the cascade passage. However, it is difficult to make the same periodic flow conditions...
Three-dimensional viscous flow numerical simulation was conducted to study influence of diffuser meridional-section shape with different width ratio on micro-gas turbine centrifugal compressor. Then, the curves of efficiency, total pressure recovery coefficient, total pressure ratio and static pressure ratio were compared under different width ratio. Moreover, the velocity vector in diffuser flow...
The paper establishes a calculation model for aerodynamic parameters and performance for horizontal shaft wind turbine according to strip theory, in the design, the strip theoretical is revised by considering the parameters included the blade tip loss, blade root loss, cascade influence and heavy load operation. Blade aerodynamic shape of 1.5MW horizontal shaft wind turbine is finished, and aerodynamic...
A series of experiments on the capacitive current interruption using an air-break disconnector (DS) with an Auxiliary Interrupter (AI) is presented. The AI contacts open with much higher speed (average llm/s) than the main contacts of the DS (0.2-0.6m/s). This paper mainly focuses on optical observation of the arc recorded by a high-speed camera. The result shows: (i) The arc brightness is synchronous...
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