Modeling and Simulating of Gas Turbine Cooled Blades

In contrast to existing methods which do not take into account multiconnectivity in a broad sense of this term, we develop mathematical models and highly effective combination (BIEM and FDM) numerical methods of calculation of stationary and quasistationary temperature field of a profile part of a blade with convective cooling (from the point of view of realization on PC). The theoretical substantiation of these methods is proved by appropriate theorems. For it, converging quadrature processes have been developed and the estimations of errors in the terms of A.Ziqmound continuity modules have been received. For visualization of profiles are used: the method of the least squares with automatic conjecture, device spline, smooth replenishment and neural nets. Boundary conditions of heat exchange are determined from the solution of the corresponding integral equations and empirical relationships. The reliability of designed methods is proved by calculation and experimental investigations heat and hydraulic characteristics of the gas turbine first stage nozzle blade.

• А. Pashayev
• D. Askerov
• R. Sadiqov
• A. Samedov
• C. Ardil

• Modeling
• Simulating
• Gas Turbine
• Cooled Blades.

[1] Pashaev, A., Sadykhov R., Samedov A., and etc.: The efficiency of
potential theory method for solving of the tasks of aircraft and rocket
design. 10-th National Mechanic Conference. Istanbul Technical
University, Aeronautics and astronautics faculty, Istanbul, Turkey (July,
1997), p. 61-62.
[2] Sadigov, R., Samedov, A.: Modeling of temperature fields of gas
turbines elements. Scientists of a slip ðÉzTU, Vol.VI, Ôäû 5. Baku (1998),
p. 234-239.
[3] Pashaev, A., Sadykhov, R., Samedov, A.: Highly effective methods of
calculation temperature fields of blades of gas turbines. V International
Symposium an Aeronautical Sciences "New Aviation Technologies of
the XXI century", A collection of technical papers, section
N3.Zhukovsky, Russia (august,1999).
[4] Zisina-Molojen, L. and etc.: Heat exchange in turbo machines. Moscow
(1974).
[5] Galicheiskiy, G.: A thermal guard of blades. Moscow (1996).
[6] Pashaev, A., Sadiqov, R., Hajiev, C.: The BEM Application in
development of Effective Cooling Schemes of Gas Turbine Blades. 6th
Bienial Conference on Engineering Systems Design and Analysis.
Istanbul, Turkey (July, 8-11, 2002).
[7] Abasov, M., Sadiqov, A., Aliyarov, R.: Fuzzy neural networks in the
system of oil and gas geology and geophysics. Third International
Conference on Application of Fuzzy Systems and Soft computing.
Wiesbaden, Germany (1998), p. 108-117.
[8] Yager, R., Zadeh, L. (eds): Fuzzy sets, neural networks and soft
computing. VAN Nostrand Reinhold. Ôäû 4, N.-Y. (1994).
[9] Mohamad, H. Hassoun: Fundamentals of artificial neutral networks. A
Bradford Book. The MIT press Cambridge, Massachusetts, London,
England (1995).
[10] Pashaev, A., Sadykhov, R., Samedov, A., Mamedov, R.: The solution of
fluid dynamics direct problem of turbomachines cascades with integral
equations method. Proceed. NAA. Vol. 3, Baku (2003).
[11] Beknev, V., Epifanov, V., Leontyev, A., Osipov M. and ets.: Fluid
dynamics. A mechanics of a fluid and gas. Moscow, MGTU nam. N.E.
Bauman (1997), p. 671.
[12] Kopelev, S., Slitenko, A.: Construction and calculation of GTE cooling
systems. Kharkov, "Osnova" (1994), p. 240.
[13] Arseniev, L., Mitryayev, I., Sokolov N.: The flat channels hydraulic
resistances with a system of jets in a main stream . "Energetika", Ôäû 5
(1985), p. 85-89.