14th International Conference on Evolutionary and Deterministic Methods for Design, Optimization and Control最新文献_第2页

THE HYBRID GLOBAL OPTIMIZATION ALGORITHM ON THE BASIS OF A FIREWORKS ALGORITHM 在烟花算法的基础上提出了一种混合全局优化算法

14th International Conference on Evolutionary and Deterministic Methods for Design, Optimization and Control Pub Date : 1900-01-01 DOI: 10.7712/140121.7963.18368

P. Paździor, M. Szczepanik

引用次数: 0

PROPELLER OPTIMIZATION - STRIVE TO PERFORMANCE / ACOUSTIC TRADE-OFF 螺旋桨优化-努力性能/声学权衡

14th International Conference on Evolutionary and Deterministic Methods for Design, Optimization and Control Pub Date : 1900-01-01 DOI: 10.7712/140121.7957.18315

O. Gur, Jonathan C. Silver, Radovan Dítě, Raam Sundhar

{"title":"PROPELLER OPTIMIZATION - STRIVE TO PERFORMANCE / ACOUSTIC TRADE-OFF","authors":"O. Gur, Jonathan C. Silver, Radovan Dítě, Raam Sundhar","doi":"10.7712/140121.7957.18315","DOIUrl":"https://doi.org/10.7712/140121.7957.18315","url":null,"abstract":"This paper describes the design of a propeller-based electric-propulsion system for hover condition. The design procedure harnesses modeFRONTIER optimization framework with various single-and multi-objective hybrid optimization schemes. Several analyses were integrated to the design framework and propeller geometry optimizations were conducted. The multi-objective problem consisted of trade-off between the contradicting goals of performance (required electric power at hover) and acoustics (tonal overall sound-pressure-level). Using various hybrid optimization schemes, the Pareto tradeoff fronts were found for 2, 3, and 4 bladed propellers. These propellers are compared to an off-the-shelf propeller blade (Mejzlik 18x6) which is used as a reference. This reference propeller proves to be good de-sign, compared to the optimized results. Still, from the optimized Pareto results, 4 propeller configurations were chosen to be fabricated and tested. These configurations are optimized by their acoustic or performance trade-off. These optimized propellers represent a good compromise, which is better than the reference propeller.","PeriodicalId":309238,"journal":{"name":"14th International Conference on Evolutionary and Deterministic Methods for Design, Optimization and Control","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130314632","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

OPTIMIZATION OF A MIXING DEVICE WITH BAFFLES USING THE ENHANCED SURFACE INTEGRAL (E-SI) CONTINUOUS ADJOINT METHOD FOR TWO-PHASE FLOWS 采用增强表面积分(e-si)连续伴随法优化两相流挡板混合装置

14th International Conference on Evolutionary and Deterministic Methods for Design, Optimization and Control Pub Date : 1900-01-01 DOI: 10.7712/140121.7950.18375

Nikolaos Galanos, E. Papoutsis‐Kiachagias, K. Giannakoglou

引用次数: 0

PREDICTION MODELS FOR LOAD CARRYING CAPACITY OF RC WALL THROUGH NEURAL NETWORK 基于神经网络的混凝土墙体承载力预测模型

14th International Conference on Evolutionary and Deterministic Methods for Design, Optimization and Control Pub Date : 1900-01-01 DOI: 10.7712/140121.7956.18529

Shaheera Sharib, Naveed Ahmad, V. Plevris, Afaq Ahmad

{"title":"PREDICTION MODELS FOR LOAD CARRYING CAPACITY OF RC WALL THROUGH NEURAL NETWORK","authors":"Shaheera Sharib, Naveed Ahmad, V. Plevris, Afaq Ahmad","doi":"10.7712/140121.7956.18529","DOIUrl":"https://doi.org/10.7712/140121.7956.18529","url":null,"abstract":"This study is focused on the development of prediction models for the determination of the load carrying capacity of reinforced concrete walls using Artificial Neural Networks (ANNs). A database of 95 samples is used for the RC Wall, based on available experimental studies, including various critical parameters, such as the length of web portion of the wall ( L w ) , thickness of wall boundary member ( b w ) , effective depth of wall (d), height of wall ( H ) , shear span ratio ( a v /d ) , vertical steel ratio ( ρ v ) , horizontal steel ratio ( ρ h ) , yield strength of vertical and horizontal steel ( f y ) , compressive strength of concrete ( f c ) , and the ultimate load carrying capacity ( V exp ). Depending on the combination of the input parameters, 4 different ANN models are trained by using a customized code in Matlab. Several error metrics have been used for the evaluation of the performance of the various ANN morels. The comparative study exhibited that the predictions of the ANN model are closer to the experimental values as compared to their counterpart physical models, i.e., the compressive force path (CFP) and the current design codes, ACI and Eurocode 2.","PeriodicalId":309238,"journal":{"name":"14th International Conference on Evolutionary and Deterministic Methods for Design, Optimization and Control","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123027702","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

SOFT COMPUTING FRAMEWORK FOR THE UNCERTAINTY-BASED OPTIMIZATION OF THE LENGTH AND HEIGHT OF OGEE-CRESTED SPILLWAY 基于不确定性的坡顶溢洪道长度和高度优化软计算框架

14th International Conference on Evolutionary and Deterministic Methods for Design, Optimization and Control Pub Date : 1900-01-01 DOI: 10.7712/140121.7954.18433

Jafar Jafari-Asl, Mohamed El Amine Ben Seghier, Sima Ohadi, V. Plevris

引用次数: 1

TESTS OF SCRATCH RESISTANCE OF POLYMER MATERIAL SURFACES 高分子材料表面抗划伤性试验

14th International Conference on Evolutionary and Deterministic Methods for Design, Optimization and Control Pub Date : 1900-01-01 DOI: 10.7712/140121.7966.18360

J. Sikora, D. Pieniak

引用次数: 0

ADJOINTOPTIMISATIONFOAM: AN OPENFOAM-BASED FRAMEWORK FOR ADJOINT-ASSISTED OPTIMISATION Adjointoptimisationfoam:一个基于开放泡沫的框架，用于伴随辅助优化

14th International Conference on Evolutionary and Deterministic Methods for Design, Optimization and Control Pub Date : 1900-01-01 DOI: 10.7712/140121.7960.18382

E. Papoutsis‐Kiachagias, K. Gkaragkounis, A. Margetis, T. Skamagkis, V. Asouti, K. Giannakoglou

{"title":"ADJOINTOPTIMISATIONFOAM: AN OPENFOAM-BASED FRAMEWORK FOR ADJOINT-ASSISTED OPTIMISATION","authors":"E. Papoutsis‐Kiachagias, K. Gkaragkounis, A. Margetis, T. Skamagkis, V. Asouti, K. Giannakoglou","doi":"10.7712/140121.7960.18382","DOIUrl":"https://doi.org/10.7712/140121.7960.18382","url":null,"abstract":". This paper overviews the capabilities of adjointOptimisationFoam, an OpenFOAM-based framework for adjoint-assisted, gradient-based optimisation that ﬁrst appeared publicly in the open-source CFD toolbox, OpenFOAM, in v1906. Capabilities of the publicly available software and of the in-house version of it are separately discussed. The publicly available software is structured in a way that allows for an automated shape optimisation loop, including all steps from the solution of the ﬂow equations to the update of the design variables in a single executable, avoiding thus the need for external scripting. The software has already been used in a number of industrial optimisation problems, some of which will brieﬂy be presented herein. Ad-ditionally, adjointOptimisationFoam is currently developed and extended by the Parallel CFD & Optimization Unit of NTUA. Topics of active development include a) the continuous adjoint to unsteady ﬂows, including data compression techniques to reduce the memory footprint, b) stabilisation techniques for the solution of the primal and adjoint equations based on the Re-cursive Bisection Method and the control of the Adjoint Transposed Convection term, c) a suite of tools for topology","PeriodicalId":309238,"journal":{"name":"14th International Conference on Evolutionary and Deterministic Methods for Design, Optimization and Control","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129240584","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

AGGREGATED FORMULATION OF GEOMETRIC CONSTRAINTS FOR NODE-BASED SHAPE OPTIMIZATION WITH VERTEX MORPHING 具有顶点变形的基于节点的形状优化几何约束的聚合表达式

14th International Conference on Evolutionary and Deterministic Methods for Design, Optimization and Control Pub Date : 1900-01-01 DOI: 10.7712/140121.7952.18383

Armin Geiser, Ihar Antonau, K. Bletzinger

引用次数: 3

OPTIMUM DESIGN OF TUNED MASS DAMPERS FOR REAL-SIZE STRUCTURES VIA ADAPTIVE HARMONY SEARCH ALGORITHM 基于自适应和声搜索算法的实际结构调谐质量阻尼器优化设计

14th International Conference on Evolutionary and Deterministic Methods for Design, Optimization and Control Pub Date : 1900-01-01 DOI: 10.7712/140121.7944.18378

Aylin Ece Kayabekir, S. M. Nigdeli, G. Bekdaş, M. Yücel

{"title":"OPTIMUM DESIGN OF TUNED MASS DAMPERS FOR REAL-SIZE STRUCTURES VIA ADAPTIVE HARMONY SEARCH ALGORITHM","authors":"Aylin Ece Kayabekir, S. M. Nigdeli, G. Bekdaş, M. Yücel","doi":"10.7712/140121.7944.18378","DOIUrl":"https://doi.org/10.7712/140121.7944.18378","url":null,"abstract":"In control of structures for earthquake excitation, tuned mass dampers (TMDs) can be used. For the efficiency of a passive control system, it is needed to tune the parameters of TMD according to the parameters of the structures. For this aim, the use of metaheuristic methods plays an important role in the optimization of TMDs. Metaheuristic algorithms are inspired by a process of a happening or a living creature. Harmony Search (HS) imitates the musical performance process involving the note tuning process of musicians to gain the admiration of audiences. In the algorithm, two types of optimization using global and local searches are used. In global, a new note is generated, while a neighboring value is assigned in local search as the imitation of playing something similar to the known notes. In this process, two algorithm-specific parameters are used. These parameters are called harmony memory considering rate (HMCR) and pitch adjusting rate (PAR). The chosen values of parameters may be effective on the performance of the algorithm. For that reason, adaptive techniques that automatically update the parameter in the iterations are also suggested. In the present study, adaptive HS is presented on optimum design of TMD for structures subjected to earthquake excitations. For the numerical examinations, a real-size structure plan is considered by checking the stroke capacity of TMD during optimization. Also, the optimization is done by using a wide set of earthquake records to find a general solution. According to the results, the adaptive HS is very suitable to find a feasible TMD for structures subjected to earthquake excitations.","PeriodicalId":309238,"journal":{"name":"14th International Conference on Evolutionary and Deterministic Methods for Design, Optimization and Control","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127802890","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

CONTINUOUS ADJOINT-BASED AEROACOUSTIC SHAPE OPTIMIZATION OF AN AERO-ENGINE INTAKE 基于连续伴随的航空发动机进气道气动声学形状优化

14th International Conference on Evolutionary and Deterministic Methods for Design, Optimization and Control Pub Date : 1900-01-01 DOI: 10.7712/140121.7951.18377

Morteza Monfaredi, V. Asouti, X. Trompoukis, K. Tsiakas, K. Giannakoglou

{"title":"CONTINUOUS ADJOINT-BASED AEROACOUSTIC SHAPE OPTIMIZATION OF AN AERO-ENGINE INTAKE","authors":"Morteza Monfaredi, V. Asouti, X. Trompoukis, K. Tsiakas, K. Giannakoglou","doi":"10.7712/140121.7951.18377","DOIUrl":"https://doi.org/10.7712/140121.7951.18377","url":null,"abstract":". This paper addresses the aeroacoustic shape optimization of a 3D aero-engine intake by means of gradient-based optimization assisted by continuous adjoint. A hybrid aeroacoustic model based on the (U)RANS equations and the permeable version of the Ffowcs Williams-Hawkings (FW-H) acoustic analogy in the frequency domain is used. The ﬂow and adjoint simulations are for compressible ﬂuid ﬂows realized using the in–house GPU–enabled software PUMA. The continuous adjoint formulation includes the differentiation of the Spalart– Allmaras turbulence model. The implementation and differentiation of the 3D FW–H analogy are veriﬁed by comparing the results of the FW–H analogy to both analytical solutions and URANS. In order to save computational cost, periodic boundary conditions are used to reduce the solution domain size together with the use of a moving reference frame which leads to steady ﬂow and adjoint runs. The generatrix of the nacelle lips and the throat area are parameterized using NURBS. The developed tool is used to perform shape optimization to minimize the total energy contained","PeriodicalId":309238,"journal":{"name":"14th International Conference on Evolutionary and Deterministic Methods for Design, Optimization and Control","volume":"84 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120812406","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1