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СТВЕННЫЙ JL ПОЛИТЕХ 1899 ПОЛИТЕХНИЧЕСКИЙ BEPCHTET Peter the Great Saint-Petersburg State Polytechnic University Department of «COMPRESSOR VACUUM AND REFRIGERATION ENGINEERING>> www.kviht.ru UNSTEADY FLOW PROCESSES INVESTIGATION IN CENTRIFUGAL COMPRESSORS Development of the turbocompressor surge protection system PPα P2.Pα2 PPα 1200 Po 400 Pzop 0.5 zb=0,06 zb-0.94 Pzp LES zb-0,5 0.5 04 02 0.1 45 90 135 180 225 276 315 Pan 06 zb-0,94 zb=0.5 zb=0,06 500p 3500," 1. обр 20 обр op 20 sop обу до обр P2 LES 180 225 Op 270 315 360 0, Т. обр 2000p op 20 odp Solp 20 op Po To 0144 Department's test rig for investigation of unsteady flow phenomenon in the flow passage including pre-stall, flaw separation and surge 20

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