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

Abadi, S.M.A. Noori Rahim; Ahmadpour, Ali; Abadi, S.M.N.R.; Meyer, Josua P.

doi:10.1016/j.applthermaleng.2016.10.058

Cited by 83 publications

(18 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…] that maximizes the flow rate J 1 (14) and minimizes the bore length J 2 (15), subject to the laminar flow of the fluid (16), the completely developed fluid flow (17), and the minimum flow rate to be accomplished in each bore (18). The MOP is formally formulated in (20).…”

Section: Statement Of the Multi-objective Optimization Problemmentioning

confidence: 99%

Optimum Nozzle Design for a Viscous Liquid by Using Multi-Objective Search Approaches

et al. 2020

View full text Add to dashboard Cite

This work deals with the problem of a nozzle design addressed through a multi-objective optimization strategy where governing equations of fluid dynamics model the phenomena. The liquid flow rate and the nozzle length are considered as the design criteria. Two Differential Evolution variants are proposed to obtain a set of design configurations that presents numerous and different synergies between the design criteria. The first variant is based on the Hypervolume performance metric (MODE-HVR) and the second one includes the-dominance concept (MODE-HV R). A comparative study is performed with other optimizers from well-established search approaches for multi-objective optimization such as algorithms based on Pareto dominance (NSGA-II and SPEA2), decomposition (MOEA/D), metric (SMS-EMOA) and hybrid (NSGA-III). Based on the Spacing and Hypervolume indicators of the obtained Pareto fronts, the proposed optimization algorithms can provide more design solutions, promoting the reconfigurability (synergy) in the nozzle design. Hence, the multi-objective design strategy allows the designer to have a wide range of solutions and to choose the most suitable one for a particular application, compared with a traditional design where both design criteria are considered as a single aggregate function. INDEX TERMS Optimum nozzle design, multi-objective optimization, multi-objective search approaches, optimization.

show abstract

Section: Statement Of the Multi-objective Optimization Problemmentioning

confidence: 99%

Optimum Nozzle Design for a Viscous Liquid by Using Multi-Objective Search Approaches

et al. 2020

View full text Add to dashboard Cite

show abstract

“…The deformation of a blade is very complicated due to its variable cross section and torsional shape, the complex and nonlinear steam flow field around it and their coupling effect (Choi et al, 1999;Chaibakhsh and Ghaffari, 2008;Wood and Morton, 1984;Fadl et al, 2018). Therefore, it is difficult to obtain accurate deformation of a blade using calculations and analyses based on theoretical formulas (Moheban and Young, 1985).…”

Section: Introductionmentioning

confidence: 99%

Scheme optimization for a turbine blade under multiple working conditions based on the entropy weight vague set

Zhou

Wang

et al. 2021

Mech. Sci.

View full text Add to dashboard Cite

Abstract. The deformation of blades under complex loads of multiple working conditions will reduce the energy conversion efficiency. To reduce the deviation of the blade shape in practical working conditions, a combination and optimization method of blade design schemes under multiple working conditions, based on the entropy weight vague sets, is proposed. The sensitivity of each working condition index is analyzed based on the information entropy, and the satisfaction degree of the design scheme based on the design requirements and experiences is described with the vague set. The matching degree of different design schemes for multiple working conditions is quantified according to the scoring function. The combination and optimization of the design scheme are verified by numerical simulation analysis. The results show that the proposed design scheme has a smaller blade shape deviation than the traditional design scheme under multiple working conditions.

show abstract

“…Nowadays, the numerical research on condensing steam flows modelling in nozzles and turbine cascades are still valid and are under consideration of many researchers [13][14][15].…”

Section: Introductionmentioning

confidence: 99%

An attempt to make a reliable assessment of the wet steam flow field in the de Laval nozzle

et al. 2018

View full text Add to dashboard Cite

This paper presents the results of research on the wet steam flow with spontaneous condensation in the de Laval nozzle. A comparison is made between the results of numerical modelling performed for two cases of boundary conditions obtained using an in-house CFD code and the Ansys CFX commercial package. The numerical modelling results are compared to the results of experimental testing carried out on an in-house laboratory steam tunnel. The differences between the numerical results produced by the two codes in terms of place and intensity of condensations of steam to water point to the difficulty in correct modelling of this type of flows and emphasize the need for further studies in this field.

show abstract

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

Cited by 83 publications

References 33 publications

Optimum Nozzle Design for a Viscous Liquid by Using Multi-Objective Search Approaches

Optimum Nozzle Design for a Viscous Liquid by Using Multi-Objective Search Approaches

Scheme optimization for a turbine blade under multiple working conditions based on the entropy weight vague set

An attempt to make a reliable assessment of the wet steam flow field in the de Laval nozzle

Contact Info

Product

Resources

About