Profiling a Centrifugal Compressor Impeller in the Meridional Plane Based on Gas Trajectories Calculation in a Force Field
Authors: Kalashnikov D.A., Borisov Y.A., Chernyshev A.V. | Published: 22.06.2022 |
Published in issue: #7(748)/2022 | |
Category: Energy and Electrical Engineering | Chapter: Vacuum and Compressor Technology and Pneumatic Systems | |
Keywords: centrifugal compressor, meridional plane, flow path profiling, impeller, gas-dynamic parameters |
The article describes current approaches to profiling the shape of the flow paths of centrifugal compressor stages in the meridional plane. The problems that arise when profiling such products are identified. An approach to the profiling the impeller in the meridional plane is proposed, based on the calculation of the trajectories of the movement of an elementary mass of gas in a force field. As a criterion ensuring the defect-free nature of the gas flow, the law of linear change in gas-dynamic parameters along the length of the flow path is selected.
References
[1] Khisameev I.G., Maksimov V.A., Batkis G.S. et al. Proektirovanie i ekspluatatsiya promyshlennykh tsentrobezhnykh kompressorov [Design and exploitation of industrial centrifugal compressors]. Kazan’, Fen Publ., 2010. 671 p. (In Russ.).
[2] Vinogradov L.V. A meridian profiling of a sprocket of the centrifugal compressor. Vestnik RUDN. Ser. Inzhenernye issledovaniya [RUDN Journal of Engineering Research], 2004, no. 2, pp. 35–39. (In Russ.).
[3] Cumpsty N.A. Compressor aerodynamics. Krieger, 2004. 552 p. (Russ. ed.: Aerodinamika kompressorov. Moscow, Mir Publ., 2000. 688 p.)
[4] Krayko A.N. Teoreticheskaya gazovaya dinamika [Theoretical gas dynamics]. Moscow, Torus Press Publ., 2010. 440 p. (In Russ.).
[5] Denton J.D. The use of a distributed body force to simulate viscous effects in 3D flow calculations. ASME Int. Gas Turbine Conf. and Exhibit., 1986, vol. V001T01A002, doi: https://doi.org/10.1115/86-GT-144
[6] Stepanov G.Yu. Gidrodinamika reshetok turbomashin [Hydrodynamics of turbomachine grids]. Moscow, Fizmatgiz Publ., 1962. 512 p. (In Russ.).
[7] Loytsyanskiy L.G. Mekhanika zhidkosti i gaza [Fluid mechanics]. Moscow, Drofa Publ., 2003. 840 p. (In Russ.).
[8] Den G.N. Mekhanika potoka v tsentrobezhnykh kompressorakh [Fluid mechanics in centrifugal compressors]. Leningrad, Mashinostroenie Publ., 1973. 272 p. (In Russ.).
[9] Gevorkyan P. Lineynaya algebra i analiticheskaya geometriya [Linear algebra and analytic geometry]. Moscow, Fizmatlit Publ., 2018. 204 p. (In Russ.).
[10] Akhmadiev F.G., Gabbasov F.G., Ermolaeva L.B. et al. Chislennye metody. Primery i zadachi [Numerical methods. Examples and problems]. Kazan’, Izd-vo KGASU Publ., 2017. 107 p. (In Russ.).