FLOW SIMULATION ON LOCKING MODE IN TANDEM COMPRESSOR CASCADE
DOI:
https://doi.org/10.18372/2310-5461.28.9681Keywords:
tandem cascade, numerical simulation, locking mode, flow separationAbstract
In work are represented the results of flow simulation on locking mode in tandem compresor cascade at angles of attack in range –15º…–30º at inlet fixed Mach number Мw1= 0,9; 0,808; 0,65. The redistribution of the flow in the inter-blade channel has significant influence for large negative angles of attack on the occurrence of locking mode of viscous gas flow. This is due to the emergence of the critical flow regime in a slot channel between the profiles of the first and second rows. In work are represented corrected method for calculation of locking mode in tandem compresor cascade. Method takes into account the influence of the redistribution the flow parameters in the inter-blade channel of tandem compresor cascade. Comparison of the results of numerical simulations and theoretical calculations showed good agreement. Accuracy of calculation is 1,65…2,4%.
References
Терещенко Ю. М. Аэродинамическое совер-шенствование лопаточных аппаратов компрессоров / Ю. М. Терещенко. — М. : Ма-шиностроение, 1987. — 168 с.
Гостелоу Дж. Аэродинамика решёток турбо-машин / Дж. Гостелоу. — М. : Мир, 1987. — 392с.
Chen N. Aerothermodynamics of turbomachi-nery: analysis and design / N. Chen. — Singapure: John Wiley & Sons Pte Ltd, 2010. —461p.
Hara T. Unsteady flow field under surge and rotating stall in a three-stage axial flow compressor / T. Hara, D. Morita, Y. Ohta, E. Outa // Journal of Thermal Science. — 2011. — Vol. 20, Issue 1. — P. 6–12. doi: 10.1007/s11630–011–0427–z.
Ohta Y. Unsteady behavior of surge and rotating stall in an axial flow compressor / Y. Ohta, Y. Fujita, D. Morita // Journal of Thermal Science. — 2012. — Vol. 21, Issue 4. — P. 302—310. doi: 10.1007/s11630–012–0548–z.
Du J. Numerical study on the influence mechanism of inlet distortion on the stall margin in a transonic axial rotor / J. Du, F. Lin, J. Chen, S. C. Morris, C. Nie // Journal of Thermal Science. — 2012. — Vol. 21, Issue 3. — P. 209—214. doi: 10.1007/s11630–012–0537–2.
ТерещенкоЮ. М. Влияние густоты решётки аэродинамических профилей на режимы «запира-ния» течения в межлопаточных каналах / Ю. М. Терещенко, Е. В. Дорошенко, А. Техрани // Восточно-Европейский журнал передовых техно-логий. — 2014. — Т. 4, № 7 (70). — С. 30–33. doi: 10.15587/1729–4061.2014.26067.
Shen C. Numerical and experimental investiga-tion of an axial compressor flow with tandem cascade / C. Shen, X. Qiang, J. Teng // Journal of Thermal Science. — 2012. — Vol. 21, Issue 6. — P. 500–508. doi: 10.1007/s11630-012-0574-x.
Qiushi L. Application of tandem cascade to design of fan stator with supersonic inflow / L. Qiushi, W. Hong, Zh. Sheng // Chinese Journal of Aeronautics. — 2010. — Vol. 23, Issue 1. — P. 9—14. doi: 10.1016/s 1000-9361(09)60181-3.
Терещенко Ю. М. Моделирование течения в двухрядных лопаточных венцах / Ю. М. Терещен-ко, Е. В. Дорошенко, Дж. Аболхассан заде // Вісник Національного технічного університету «ХПІ». Серія: Механіко-технологічні системи та комплекси. — 2015. —№ 22. — С. 75–77.
