he method of explicit construction of the turbine cascades

Аuthors

Volkov A. A.^*, Sokolova A. S.^**, Druzhkova Y. A.^***

,

*e-mail: aa.volkov@uec-kuznetsov.ru
**e-mail: aleksandrasokolova2@gmail.com
***e-mail: yuliadruzhkova00@gmail.com

Abstract

An overview of existing methods for constructing the profile of an axial turbine blade is presented, their advantages and disadvantages are noted. An algorithm for building a profile is given for some of the methods. The existing methods of profile construction are based on 5 control points and tangents in them. The method of forming the profile of an axial turbine blade is considered. The proposed method is based on the introduction of a new geometric parameter – the angle of bending of the leading edge. The use of this parameter in conjunction with generally recognized profile parameters allows you to uniquely determine the profile geometry. It’s shown that the developed method allows flexibly controlling the distribution of curvature of the backrest and trough of the profile for the specified geometric parameters of the profile.

Keywords:

blade profile, turbine, turbine grid, profile construction method, profile parameters, rational Bezier curve, profile curvature

References

1. Aronov B.M. Proektirovanie pera lopatok aviatsionnykh gazovykh turbin [Design of blade feather of aviation gas turbines]. Posobie po kursovomu i diplomnomu proektirovaniyu. Kuibyshev, 1970, 169 p. (In Russ.).
2. Aronov B.M. Profilirovanie lopatok aviatsionnykh gazovykh turbin [Profiling of aviation gas turbine blades]. Moscow: Mashinostroenie, 1975, 192 p. (In Russ.).
3. Deich M.E. Atlas profilei reshetok osevykh turbin [Atlas of profiles of axial turbine grids]. Moscow: Mashinostroenie, 1965, 96 p. (In Russ.).
4. Ronald H. Aungier Turbine Aerodunamics, American Society of Mechanical Engineers (ASME) Press, 2005, 7 p.
5. Gol'tsev V.V. Metodika gazodinamicheskogo rascheta i profilirovaniya gazovoi turbiny [Methodology of gasdynamic calculation and profiling of a gas turbine]. Moscow: CIAM, 1956, 68 p. (In Russ.).
6. Abiants V.Kh. Teoriya gazovykh turbin reaktivnykh dvigatelei [Theory of gas turbines of jet engines]. Moscow: Mashinostroenie, 1965, 307 p. (In Russ.).
7. Kopelev S.Z. Raschet turbin aviatsionnykh dvigatelei [Calculation of turbines of aviation engines]. Moscow: Mashinostroenie, 1974, 268 p. (In Russ.).
8. Derevyanko A.V. Analiticheskoe profilirovanie lopatok turbin [Analytical profiling of the turbine blades]. Thermal Engineering, 1982, no. 3. pp. 52 – 55. (In Russ.).
9. Shubenko-Shubin L.A. Analiticheskii metod proektirovaniya reshetok profilei turbomashin [Analytical method of designing of turbomachine profile grids]. Energomashinostroyeniye, 1973, no. 1. pp. 1 – 4. (In Russ.).
10. Aronov B.M. Metod analiticheskogo proektirovaniya profilei lopatok osevykh gazovykh turbin [Method of the analytical design of the axial gas turbine blade profiles]. Izvestiya vysshikh uchebnykh zavedenii: Aviatsionnaya Tekhnika, 1971, no. 1. pp.129 – 136. (In Russ.).
11. Mamaev B.I. Postroenie turbinnykh reshetok profilei na EVM [Construction of the turbine profile grids on a computer]. Mezhvuzovskii sbornik: voprosy proektirovaniya i dovodki aviatsionnykh gazoturbinnykh dvigatelei, 1978. pp. 49 – 57. (In Russ.).
12. Kopelev S.Z. Proektirovanie protochnoi chasti turbin aviatsionnykh dvigatelei [Designing of a flowing part of turbines of aviation engines]. Moscow: Mashinostroenie, 1984. 224 p. (In Russ.).
13. Pritchard L.J. An eleven parameter axial turbine airfoil geometry model. American Society of Mechanical Engineers (ASME) Press, 85-GT-219, 1985, 10 p.
14. Slitenko A.F. Postroenie reshetok turbinnykh profilei s pomoshch'yu polinomov Beziera-Bernshteina [Construction of turbine profile grids by means of Bezier-Bernstein polynomials]. Thermal Engineering, 1982, no. 3. pp. 77 – 81. (In Russ.).
15. Koini G.N. A software tool for parametric design of turbomachinery blades. Advances in Engineering Software 40, p. 41 – 51.
16. Alexeev R.A. Turbine blade profile design method based on Bezier curves. IOP Conference Series: Journal of Physics: Conf. Series 891, 2017, 16 p.
17. Kustarev Yu.S. Osevye turbiny transportnykh GTD [Axial turbines of the transport GTE]. Uchebnoe posobie dlya studentov, Moscow: MGTU «MAMI», 2006, 70 p. (In Russ.).