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Lulu Zhai, Chao Lu, Jia Guo, Zuchao Zhu and Baoling Cui
Multistage pumps with blade-type guide vanes are widely used in offshore oil production, the petrochemical and coal-chemical industries, and nuclear power fields for its advantages of large flow rate, high pressure, and excellent operation stability. How...
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Qingcai Zhang, Qinqin Wang, Xiaoming Tan and Jingzhou Zhang
A rim seal is often used to prevent the ingress of high-temperature gas into the turbine disk cavity and protect the turbine disk from damage. Based on the overlapping rim seal (Seal-A), this paper proposes two more composite sealing structures (Seal-B a...
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Gang Zhao, Tian Qiu and Peng Liu
Rotor-stator cavities are often found in turbomachinery; they supply cold air that is bled from the compressor to the turbine blades. The pressure of the outlet of a rotor-stator cavity is axisymmetric under normal circumstances. However, its pressure wo...
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Tilman Raphael Schröder, Sebastian Schuster and Dieter Brillert
The designers of radial turbomachinery need detailed information on the impact of the side chamber flow on axial thrust and torque. A previous paper investigated centripetal flow through narrow rotor?stator cavities and compared axial thrust, rotor torqu...
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Tilman Raphael Schröder, Hans-Josef Dohmen, Dieter Brillert and Friedrich-Karl Benra
In the side-chambers of radial turbomachinery, which are rotor?stator cavities, complex flow patterns develop that contribute substantially to axial thrust on the shaft and frictional torque on the rotor. Moreover, leakage flow through the side-chambers ...
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A centrifugal carbon dioxide compressor is a kind of general machine with extensive applications. The geometry of the side chambers of the compressors can be determined by studying the rotor-stator cavity with centripetal through-flow. In this paper, num...
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Bo Hu, Dieter Brillert, Hans Josef Dohmen and Friedrich-Karl Benra
In radial pumps and turbines, the centrifugal through-flow in both the front and the back chambers is quite common. It strongly impacts the core swirl ratio, pressure distribution, axial thrust and frictional torque. In order to investigate these relatio...
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Bo Hu, Dieter Brillert, Hans Josef Dohmen and Friedrich-Karl Benra
Daily and Nece distinguished four flow regimes in an enclosed rotor-stator cavity, which are dependent on the circumferential Reynolds number and dimensionless axial gap width. A diagram of the different flow regimes including the respective mean profile...
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R. P. Roy, G. Xu, and J. Feng
Pág. 621 - 632
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