naa a22 4500 510766439 CHVBK 20180411083158.0 cr unu---uuuuu 180411e20130401xx s 000 0 eng 10.1007/s11630-013-0600-7 doi (NATIONALLICENCE)springer-10.1007/s11630-013-0600-7 Numerical analysis of flow in ultra micro centrifugal compressor -influence of meridional configuration [Elektronische Daten] [Masanao Kaneko, Hoshio Tsujita, Toshiyuki Hirano] A single stage ultra micro centrifugal compressor constituting ultra micro gas turbine is required to operate at high rotational speed in order to achieve the pressure ratio which establishes the gas turbine cycle. As a consequence, the aerodynamic losses can be increased by the interaction of a shock wave with the boundary layer on the blade surface. Moreover, the centrifugal force which exceeds the allowable stress of the impeller material can act on the root of blades. On the other hand, the restrictions of processing technology for the downsizing of impeller not only relatively enlarge the size of tip clearance but also make it difficult to shape the impeller with the three-dimensional blade. Therefore, it is important to establish the design technology for the impeller with the two-dimensional blade which possesses the sufficient aerodynamic performance and enough strength to bear the centrifugal force caused by the high rotational speed. In this study, the flow in two types of impeller with the two-dimensional blade which have different meridional configuration was analyzed numerically. The computed results clarified the influence of the meridional configuration on the loss generations in the impeller passage. Science Press, Institute of Engineering Thermophysics, CAS and Springer-Verlag Berlin Heidelberg, 2013 Ultra Micro Centrifugal Compressor nationallicence Two-dimensional Blade nationallicence Gas Turbine nationallicence Numerical Analysis nationallicence Kaneko Masanao Graduate School of Engineering, Hosei University, 3-7-2, Kajinocho, Koganei-shi, 184-8584, Tokyo, Japan aut Tsujita Hoshio Department of Mechanical Engineering, Faculty of Science and Engineering, Hosei University, Tokyo, Japan aut Hirano Toshiyuki Production Systems Engineering Course, Tokyo Metropolitan College of Industrial Technology, Tokyo, Japan aut Journal of Thermal Science SP Science Press 22/2(2013-04-01), 111-116 1003-2169 22:2<111 2013 22 11630 https://doi.org/10.1007/s11630-013-0600-7 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11630-013-0600-7 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Kaneko Masanao Graduate School of Engineering, Hosei University, 3-7-2, Kajinocho, Koganei-shi, 184-8584, Tokyo, Japan aut NATIONALLICENCE 700 1- Tsujita Hoshio Department of Mechanical Engineering, Faculty of Science and Engineering, Hosei University, Tokyo, Japan aut NATIONALLICENCE 700 1- Hirano Toshiyuki Production Systems Engineering Course, Tokyo Metropolitan College of Industrial Technology, Tokyo, Japan aut NATIONALLICENCE 773 0- Journal of Thermal Science SP Science Press 22/2(2013-04-01), 111-116 1003-2169 22:2<111 2013 22 11630 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer