This paper relates to the CFD calculation of a new turbine type which is in the phase of theoretical analysis, because the working fluid is a mixture of steam and gas generated in wet combustion chamber. At first, this article concentrates on a possibility of streamlining the flow efficiency of a last stage of axial turbine working on gas-steam mixture using a hybrid of the particle swarm optimization algorithm with the Nelder-Mead method called HNMPSO. Subsequently, this article aim is to redesign and analyze the flow characteristics of the last stage of the gas-steam turbine. Values of the maximized objective function, which is the isentropic efficiency of the turbine stage, are found from 3D RANS computation of the flowpath geometry changing during the improving scheme. Among the optimized variables are parameters characterising the shape of the endwall contours within the rotor domain.
Authors
- dr inż. Paweł Ziółkowski link open in new tab ,
- mgr inż. Łukasz Witanowski,
- dr inż. Piotr Klonowicz,
- mgr inż. Stanisław Głuch link open in new tab
Additional information
- Category
- Aktywność konferencyjna
- Type
- publikacja w wydawnictwie zbiorowym recenzowanym (także w materiałach konferencyjnych)
- Language
- angielski
- Publication year
- 2021
