Evolutionary algorithm based optimization of hydraulic machines utilizing a state-of-the-art block coupled CFD solver and parametric geometry and mesh generation tools

Physics-based Surrogate Optimization of Francis Turbine Runner Blades, Using Mesh Adaptive Direct Search and Evolutionary Algorithms

“…Also, a well-known evolutionary algorithm has been used by employing an optimization code, evolutionary algorithm system (EASY) [13]. It has been used in similar investigations, such as Francis runner and radial pump impeller optimization [14] and draft tube optimization [15]. The details of this optimizer and evolutionary algorithm can be found in [16].…”

“…For instance, we presented the results of a bi-objective low-fidelity optimization employed in the developed multi-fidelity methodology [17]. Also, EASY has demonstrated its success to handle a multi-objective Francis runner optimization problem [14].…”

An Automated Hydraulic Optimization Approach for RCP Impeller Using MOGA

“…Although CAD/CFD software has widely used in design of a pump, it is still a great challenging task to optimize the hydraulic performance of a pump by trial and error modifying its component geometries, because it not only requires an advanced optimization software, but also the key components of the system employed within the optimization procedure should ensure the optimization loop to work robustly, accurately and efficiently [1][2][3]. The most difficult task is how to automatically optimize the performance of impeller's rotating blade system which consist of a number of blades.…”

“…The blade shape of a mixed-flow RCP impeller usually has sculpture surfaces feature to meet the requirements of hydraulic performances. Hydraulic optimization design for blades is an intricate task involving a number of different objectives and constraints coming from hydraulics, structure and geometry [1][2][3][4]. Although designers have already applied CFD software to assess their hydraulic designs, to more tightly integrate CFD analyses is further required in the design procedure by using efficient optimization methods to get more reliable design [2][3][4][5][6][7].…”

“…Hydraulic optimization design for blades is an intricate task involving a number of different objectives and constraints coming from hydraulics, structure and geometry [1][2][3][4]. Although designers have already applied CFD software to assess their hydraulic designs, to more tightly integrate CFD analyses is further required in the design procedure by using efficient optimization methods to get more reliable design [2][3][4][5][6][7]. An automated hydraulic optimization approach which combines a blade geometry parametrization generator with an automatic CFD solution process and an optimization algorithm that are suitable for hydraulic optimization of a mixed-flow pump impeller is presented in this paper.…”