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fluid dynamics

  • Optimization of a single stage double suction centrifugal pump

    In this study, the optimization of a double-suction centrifugal pump is developed and run with the objective being the maximization of its hydraulic efficiency. The optimization of the pump is performed by means of the modeFRONTIER optimization platform using MOGA II and ANSYS CFX software was used for CFD simulations.

    paper
  • Collaborative Multidisciplinary Design Optimization for Conceptual Design of Complex Products

    This thesis explores the prospect of applying MDO in the conceptual design (CD) phase. MDO will serve as an enabler to apply higher fidelity models (HFMs) earlier and thus raise the level of concept information. The thesis provides guidelines to overcome technical and organizational barriers to implementing MDO and HFMs in practical engineering settings. A guideline for CMDO implementation is proposed for design engineers with limited prior knowledge in MDO.

    paper
  • Numerical investigation on the hydrodynamic performance of fast SWATHs with optimum canted struts arrangements

    We present a study on the interference effects generated by canted struts in SWATH vessels designed to achieve best resistance performance. The hull shapes were found by a computer driven procedure based on fully parametric geometry definition, a low order potential flow solver with linearized free surface condition and a multi-objective differential evolution optimization algorithm.

    paper
  • Boundary-Element Methods and Wave Loading on Ships

    In this study, hydrodynamic solvers, along with appropriately developed ship-parametric models, are integrated within an optimization environment using modeFRONTIER illustrating the design-through-analysis capabilities of the IGA-BEM approach. As seen here, the IGA-BEM concept can contribute toward drastically improving the efficiency and accuracy of calculating ship wave loads and hull-form optimization.

    paper
  • ESTECO webinar recording | INTEGRATING XFLOW, WB-SAILS AND MODEFRONTIER FOR OLYMPIC SAIL OPTIMIZATION

    Expert engineers from WB-Sails, Next Limit Dynamics and ESTECO are pleased to announce the joint webinar that will demonstrate the advantages of the integration of their software, illustrating the details of the models, and presenting the results of the optimization.

    webinar
  • Preliminary Design Investigation for the development of new hull shapes for America’s Cup Class catamaran AC-62

    Modern design techniques such as optimization and computational fluid dynamics have been extensively used in this investigation with the goal to improve the hydrodynamic performance of a yacht that will participate in the America's cup. Here modeFRONTIER is integrated with STARCCM+ in order to perform a preliminary investigation on the development of the forms of the hull.

    paper
  • Store Separation Analyses by means of Response Surface Modeling

    In this study, a well-known store separation test case, EGLIN test case, is simulated by using CFD-based RSMs. For this purpose, the Grid Method which is used in wind tunnel tests and design of experiment methodology are applied. Design points are first determined for design of experiment and the results obtained at these points are used for generating RSMs in modeFRONTIER.

    paper
  • Wing airfoil geometric parameterization method for efficient aerodynamic design optimization

    A new geometric parameterization method, called here as TBM (thickness-based method), was presented and evaluated through different optimization cases and algorithms. This method is based on the well-known CST and it keeps all the baseline characteristics of the core method: geometrical flexibility, surface smoothness and small number of design parameters.

    paper
  • Design Optimization of a Supersonic Nozzle

    This thesis was written with the aim of designing a high performance supersonic nozzle as an important aid to rocket propulsion and the space industry. The optimization goals are realized through calculations derived from optimization software modeFRONTIER and various computation fluid dynamics (CFD) multi-platform programs. 

    paper
  • Design of Modern Ferries with Optimized Performance in a variety of sea conditions

    A multi-objective, single stage optimization process was implemented in order to improve the hydrodynamic performance of a fast displacement ferry. In this performance optimization of a ship, objectives were improving its calm and rough water sailing efficiency by minimizing its resistance and improving its seakeeping qualities. Model tests and CFD calculations are used. A custom parametric design of an existing conventional hull form was developed using CAESES.

    paper

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