Minimization of The Number of Cooling Holes in Internally Cooled Turbine Blades Article

Dulikravich, GS, Kosovic, B. (1992). Minimization of The Number of Cooling Holes in Internally Cooled Turbine Blades . INTERNATIONAL JOURNAL OF TURBO & JET-ENGINES, 9(4), 277-284. 10.1515/TJJ.1992.9.4.277

cited authors

  • Dulikravich, GS; Kosovic, B

authors

abstract

  • Our inverse design methodology for the determination of the proper locations, shapes and sizes of a given number of coolant flow passages (holes) subject to specific surface temperatures and heat fluxes has been extended to allow the designer the freedom to guess the required number of holes and to specify the minimal allowable diameter of a hole. A constrained optimization algorithm is then used to minimize the total number of cooling holes, while satisfying user-specified hot surface temperatures and heat fluxes. Premature termination of the optimization process due to the existence of local minimas has been satisfactorily resolved by automatic switching of the objective function formulation whenever the local minima is detected. The convergence criteria of the iterative process, which can be specified by the user, was found to have a strong influence on the accuracy of the entire inverse design optimization algorithm. © Freund Publishing House Ltd.

publication date

  • January 1, 1992

published in

Digital Object Identifier (DOI)

start page

  • 277

end page

  • 284

volume

  • 9

issue

  • 4