CFD-based shape optimization of steam turbine blade cascade in transonic two phase flows

dc.contributor.authorNoori Rahim Abadi, Seyyed Mohammad Ali
dc.contributor.authorAhmadpour, A.
dc.contributor.authorAbadi, S.M.N.R.
dc.contributor.authorMeyer, Josua P.
dc.contributor.emailjosua.meyer@up.ac.zaen_ZA
dc.date.accessioned2017-02-10T06:34:09Z
dc.date.issued2017-02
dc.description.abstractIn this study CFD-based shape optimization of a 3D nozzle and a 2D turbine blade cascade is undertaken in the presence of non-equilibrium condensation within the considered flow channels. A two-fluid formulation is used for the simulation of unsteady, turbulent, supersonic and compressible flow of wet steam accounting for relevant phase interaction between nucleated liquid droplets and continuous vapor phase. An in-house CFD code is developed to solve the governing equations of the two phase flow and was validated against available experimental data. Optimization is carried out in respect to various objective functions. It is shown that nucleation rate and maximum droplet radius are the best suited target functions for reducing thermodynamic and aerodynamic losses caused by the spontaneous nucleation. The maximum increase of 2.1% in turbine blade efficiency is achieved through shape optimization process.en_ZA
dc.description.departmentMechanical and Aeronautical Engineeringen_ZA
dc.description.embargo2018-02-28
dc.description.librarianhb2017en_ZA
dc.description.urihttp://www.journals.elsevier.com/applied-thermal-engineering/en_ZA
dc.identifier.citationNoori Rahim Abadi, SMA, Ahmadpour, A, Abadi, SMNR & Meyer, JP 2017, 'CFD-based shape optimization of steam turbine blade cascade in transonic two phase flows', Applied Thermal Engineering, vol. 112, pp. 1575-1589.en_ZA
dc.identifier.issn1359-4311 (print)
dc.identifier.issn1873-5606 (online)
dc.identifier.other10.1016/j.applthermaleng.2016.10.058
dc.identifier.urihttp://hdl.handle.net/2263/58964
dc.language.isoenen_ZA
dc.publisherElsevieren_ZA
dc.rights© 2016 Elsevier Ltd. All rights reserved. Notice : this is the author’s version of a work that was accepted for publication in Applied Thermal Engineering. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. A definitive version was subsequently published in Applied Thermal Engineering, vol. 112, pp. 1575-1589, 2017. doi : 10.1016/j.applthermaleng.2016.10.058.en_ZA
dc.subjectTwo-fluid modelen_ZA
dc.subjectWet steamen_ZA
dc.subjectNon-equilibrium condensationen_ZA
dc.subjectSteam turbineen_ZA
dc.subjectShape optimizationen_ZA
dc.subjectComputational fluid dynamics (CFD)en_ZA
dc.subject.otherEngineering, built environment and information technology articles SDG-07
dc.subject.otherSDG-07: Affordable and clean energy
dc.subject.otherEngineering, built environment and information technology articles SDG-09
dc.subject.otherSDG-09: Industry, innovation and infrastructure
dc.subject.otherEngineering, built environment and information technology articles SDG-12
dc.subject.otherSDG-12: Responsible consumption and production
dc.titleCFD-based shape optimization of steam turbine blade cascade in transonic two phase flowsen_ZA
dc.typePostprint Articleen_ZA

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