open menu

Resources by type / paper

  • Axial turbine preliminary design optimization

    In turbomachinery design, many geometric parameters and design variables are considered in the process. In this optimization of an axial turbine, softwares Axial NRec and modeFRONTIER were coupled in order to handle the inlet blade angles at mid and tip span by the NSGA II genetic algorithm. The results showed feasible arrangements in the nozzle and rotor blades and efficiency was notably improved.

    paper 2016
  • Combining the pressure effect with local heat treatment for improving the sheet metal forming process

    Here we explore the advantages of Hydromechanical Deep Drawing when AA5754 Tailored Heat Treated Blanks are adopted. Due to the large number of involved parameters, a multi-objective optimization procedure was carried out. An axial symmetric FE model was coupled with the optimization platform modeFRONTIER which brought optimal results.

    paper 2016
  • An Optimisation Methodology for the Determination of Cyclic Plasticity Model Parameters

    This study explores the application of a multi-objective optimization technique using modeFRONTIER for the determination of cyclic plasticity model parameters. The proposed approach aims to provide an overall improved simulation accuracy and a better understanding of how the parameter values obtained from commonly used methodologies can be adjusted to improve the simulation results. 

    paper 2016
  • CFD Based Response Surface Modeling with an Application in Missile Aerodynamics

    In this study, steps of Computational Fluid Dynamics based reliable Response Surface Model generation are explained by applying the methods to a missile designed in Aselsan Inc. In order to generate RSMs, design of  experiment is made by using modeFRONTIER. The aim here is obtaining the aerodynamic database of the missile with a small error range in a short time period.

    paper 2016
  • Genetic Optimization for economic feasibility of refurbishment in buildings

    In this paper, refurbishment of a single residential apartment is carried out by using DesignBuilder for problem definition and initial optimization, Energy Plus for energy computation and modeFRONTIER for driving the optimization loop and performing genetic optimization. The objectives are lowering energy consumption and the life cycle refurbishment cost, using a net present value (NPV) approach.

    paper 2016
  • Application of Surrogate Models for Building Envelope Design Exploration and Optimization

    This work aims at evaluating the applicability of response surface methodology to the building envelope design exploration and optimization specifically regarding visual and energy performance. To achieve the research goal, a series of multi-objective optimization tests are arranged based on two different problem scales. The building envelope design optimization was formulated in Grasshopper and the optimization process carried out in modeFRONTIER.

    paper 2016
  • 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 2016
  • 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 2016
  • 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 2016
  • 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 2016

Sign in