Aerodynamic design optimization on unstructured grids with. The process of design and numerical calculation for rear wing is traditionally accomplished by manual interference, and the numerical results usually discuss the relation between aerodynamic. Buildings our aerodynamics studies empower innovative design. Design optimizationstructural design optimization january 23, 2004. Optimum aerodynamic design using the navierstokes equations 215 two or more to resolve the boundary layer. The key design challenge is to maximize overall aerodynamic efficiency of the proprotor in both hover and forward flight, while preserving adequate stall margins for maneuvering flight and compressibility margins for high speed flight. Aerodynamic shape optimization for supersonic aircraft james reuther nasa ames research center, moffett field, ca 94035 this paper presents a historical perspective on the development and application of aerodynamic shape optimization aso methods for supersonic aircraft design. As a particularly promising design methodology considering uncertainties, robust aerodynamic design optimization rado is capable of providing robust and reliable aerodynamic configuration and reducing cost under probable. Aerodynamic optimization of a morphing airfoil using. Aerodynamic design optimization of compressor and turbine. Geometry and optimization is a practical guide for researchers and practitioners in the aerospace industry, and a reference for graduate and undergraduate students in aircraft design.
Gradientbased algorithms such as feasible direction9,10, quasinewton11 and adjoint. A case study in aerodynamic shape optimization 223 12. Aerodynamic design and optimization of fan stage for. Aerodynamic design optimization of proprotors for convertible. Finally, navierstokes calculations generally converge much more slowly. In applying the strategy, the optimization algorithm combining global optimization and gradient algorithm is adopted to search for the optimum design. Aerodynamic design and optimization of a highloaded axial. Pdf aerodynamic design and optimization of a blended. Eas are modeled on the mechanism of the natural evolution that consists of evaluation of fitness of population, selection according to fitness, crossover and. Gradientbased algorithms such as feasible direction9,10, quasinewton11 and adjoint methods12 have been widely used for airfoil optimization. Aerodynamic design and optimization of blade configuration in an inlet stage of an aircraft engine compressor olga marakueva department of plasma and gas dynamics and heat engineering baltic state technical university keywords. This is because the derivatives with respect to all design variables for each. When performing aerodynamic shape design optimization, it is necessary to use an efficient method to define the geometry with a minimum number of parameters design variables to reduce computational cost. Aerostructural design optimization of composite wind turbine.
Pdf multimodality in aerodynamic wing design optimization. Integrated design optimization of aerodynamic and stealthy. Aerodynamic shape optimization for supersonic aircraft. Multimodality in aerodynamic wing design optimization.
Aerodynamic design optimization using the dragdecomposition. Geometry and optimization is a practical guide for researchers and practitioners in the aerospace industry, and a reference for graduate and undergraduate students in aircraft design and multidisciplinary design optimization. Aerodynamic optimization of building shapes seminar. By embedding map with an inhouse numerical optimization package, the numerical optimization of the 2d3d blade shape can be realized. Aerodynamic shape optimization of wing and wingbody. The present paper addresses the process of preliminary design of low. The optimization methodologies used in the present chapter for aerodynamic design of turbomachinery are combined with a rapid 3d blade and grid generator rapid3dgrid, a n. Aerodynamic design optimization of an axial flow compressor. On the other hand, the designer must decide in advance which parameters can be changed. Sep 18, 2014 illustrations show the applicability of the inverse code for the design of compressor blades in practical multiblade row environment.
In the design optimization process, it is crucial that the designer formulate the optimization problem well. Some examples for 3d aerodynamic optimizations of compressors are presented. The development of the f1 car is regulated by the rules sanctioned by. The seri8 wind turbine blade is a reference blade design and modified for better aerodynamic performance. Aerodynamic shape design of nozzles using a hybrid. Once the feasibility of the method is proven, the method will be extended to 2d airfoil design problems.
The optimization methodology presented utilizes a bsplinebased ffd control volume to map the blade from the object space to the parametric space via transformation operations in order to perturb. Challenging topological prejudice 237 references 239. Aerodynamic design and optimization of blade configuration in an inlet stage of an aircraft engine compressor direction. Aerodynamic design optimization on unstructured meshes. Global optimization of aerodynamic shapes requires a large number of expensive cfd simulations because of the high dimensionality of the design space. The aerodynamic effects calculated using cfx module and the stresses can be determined by mapping pressures on blade by fsi. Pdf aerodynamic design and optimization of a blendedwing. Aerodynamic design optimization of wind turbine rotors. This paper describes an aerodynamic design optimization of a highly loaded compressor stator blade using parameterized freeform deformation ffd. Optimum aerodynamic design using the navierstokes equations.
Airfoil design is one of the important factors to consider while designing. Hence there is a need to improve the efficiency of stochastic optimization methods. Nielsen virginia polytechnic institute and state university, blacksburg, va 24060 w. Trades in the aerodynamic design of proprotors that could be used to power convertiblerotor aircraft have been examined. Theadjoint method has been subsequently used for optimization design of many complex con. Aerospace science and technology 75, 183199 online publication date. Aerodynamic optimization of transonic wing design based. Aerodynamic design an overview sciencedirect topics.
The method was quickly extended to wing design by hicks and henne 11, 12. Aerodynamic optimization of building shapes is an important portion of supertall building design. Review of robust aerodynamic design optimization for air. Pdf perspectives on aerodynamic design optimization. Aerodynamic design and optimization of fan stage for boundary. Second, there is the additional cost of computing the viscous terms and a turbulence model.
Jameson and coauthors performed aerodynamic design optimization forairfoils, wings, andwingbodycombinations1,57. Pdf aerodynamic design and optimization of fan stage for. Multidisciplinary design optimization mdo requires many designs to be evaluated while searching for an optimum. Illustrations show the applicability of the inverse code for the design of compressor blades in practical multiblade row environment. Optimized aerodynamic design for high performance cars, aiaa984789, mao conference, st. Pdf aerodynamic design optimization of race car rear wing. As stated in the introduction, the inverse design method can play an important role for the aerodynamic shape design with hlfc technology because it can save the computation cost and tend to obtain a robust result.
Design optimization design domain topology optimization shape optimization. Kyle anderson nasa langley research center, hampton, va 236812199 abstract. A fullycoupledalgorithm for aerodynamic design optimization. The changes in the design are made automatically by the optimization algorithm and do not require the intervention of the designer.
Aerodynamic optimization of transonic wing design based on evolutionary algorithm akira oyama 1, shigeru obayashi 2, kazuhiro nakahashi 2 and takashi nakamura 3 1 department of aeronautics and space engineering tohoku university, sendai, japan 9808579 currently propulsion systems technology branch nasa glenn research center, cleveland, oh 445. Amoignon 1royal institute of technology kth, 10044 stockholm, sweden 2nangia aero research associates, bristol bs8 1qu, uk 3swedish defence research agency foi, 16490 stockholm, sweden this paper provides a technique that minimize the cruise. Eas are modeled on the mechanism of the natural evolution that consists of evaluation of fitness of population, selection according to fitness, crossover and mutation of mating pairs genes. Aerodynamic optimization of building shapes seminar report. His research direction is aerodynamic design and optimization of highloaded transonic fanscompressors. The paper considers the role of various optimization strategies in the aerodynamic design of military combat aircraft. Sep 20, 2019 this paper describes an aerodynamic design optimization of a highly loaded compressor stator blade using parameterized freeform deformation ffd. Aerodynamic design optimization on unstructured meshes using the navierstokes equations eric j. Early work by hicks, murman, and vanderplaats 1, 2 investigated this possibility for transonic airfoil. Design of the most optimum airfoils is trackdependent, as each track has different aerodynamic requirements. The motivation for using aso for supersonic transport design is. Aerodynamic design considerations and shape optimization.
Over the past decade, the authors have focused on solving the problem of aerodynamic shape optimization utilizing a design space of very large dimension. Aerodynamic design optimization and shape exploration. The use of numerical optimization for transonic aerodynamic shape design was pioneered by hicks, murman and vanderplaats. In the process of optimization, structure and aerodynamic design variables were set as an. Aerodynamic design optimization using euler equations and variational methods.
Design optimization massachusetts institute of technology. Our service when an ambitious architectural concept is translated into built form, the concept. They applied the method to twodimensional profile design subject to the potential flow equation. The concept of a morphing aircraft1 has generated a new design aspect that must be addressed in aerodynamic configuration design and optimization. Aerostructural design optimization of composite wind. Among optimization algorithms, evolutionary algorithms eas, for example, see 2 are emergent algorithms, which have recently been applied to aerodynamic design problems 35. This study has been made in the framework of a french national research project called aveca where onera is responsible for the aerodynamic shape optimization of an initial blendedwingbody configuration provided by airbus france.
Jieling li is a master student majoring in energy and power engineering in harbin institute of technology, china. The everincreasing demands for riskfree, resourceefficient and environmentfriendly air vehicles motivate the development of advanced design methodology. As a particularly promising design methodology considering uncertainties, robust aerodynamic design optimization rado is capable of providing robust and reliable aerodynamic configuration and reducing cost under probable uncertainties in. Governing equations inverse design optimization problems are discussed in this paper, although the method is more generally applicable. A diverse array of optimization techniques have been applied for traditional aerodynamic design problems. A series of optimizations based on the aiaa aerodynamic design optimization discussion groups wingbodytail case are presented to show that buffetonset constraints are required and to. Formula 1 race car performance improvement by optimization of the aerodynamic relationship between the front and rear wings a thesis in aerospace engineering by. Aspects of aerodynamic optimization for military aircraft. Aerodynamic design optimization on unstructured grids with a. A cfd package for turbomachinery flow simulation and.
The multi design point targets of military aircraft implies that the final product must achieve a carefully judged balance between, often conflicting, requirements. Aerodynamic design optimization and shape exploration using generative adversarial networks wei chen, kevin chiu, and mark fuge, proceedings of the aiaa scitech conference 2018. Aerodynamic shape optimization using the adjoint method. Aerodynamic design and optimization of fan stage for boundary layer ingestion propulsion system byung joon lee and mayfun liou corresponding author. Aerodynamic design optimization and shape exploration using. Introduction to aerodynamic shape optimization aerodynamic design methods the goal of all aerodynamic design methods, be they experimental, analytical, or computational, is to. Aerodynamic design considerations and shape optimization of flying wings in transonic flight m. A series of optimizations based on the aiaa aerodynamic design optimization discussion group wingbodytail case are presented to demonstrate the need for buffetonset constraints, and the. Two categories of optimization are discussed in the paper. An inverse design method with aerodynamic design optimization. This makes aerodynamic calculations in the transonic regime difficult. As a result, the calculations done to evaluate the designs must be quick and simple to have a reasonable turnaround time. Pdf study of aerodynamic design optimization using. Cfdbased aircraft design optimization has matured significantly in the last few years thanks to improvements in cfd solvers, mesh deformation, sensitivity computation, and optimization tools.
All of the optimization results presented herein are conv erged to a feasibility tolerance of at least 1. Pros and cons of airfoil optimization 1 mark drela 2 1 introduction optimization has long been considered as a means to solve the aerodynamic design problem in a formal and general manner. Aerodynamic optimization of transonic wing design based on. Aerodynamic design optimization on unstructured meshes using.
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