Eddy resolving simulation methodology for dynamic fluid-structure interactions of lightweight flexible surface structures

轻质柔性表面结构动态流固耦合的涡旋解析模拟方法

基本信息

项目摘要

The objective of the project is to develop an optimized methodology for the simulation of transient fluid-structure interactions oflightweight flexible structures in turbulent wind flow. For the design of lightweight structures, the strong interaction with the turbulenthighly vortical flow is crucial. In the first period a dedicated partitioned FSI simulation methodology based on well establishedsolvers for both disciplines and a coupling interface was developed and evaluated, taking the specific properties and the characteristic scales of both fields into account. The main achievements are:1. Robust, efficient and comprehensively validated coupling method between eddy-resolving methods (LES) and thin-walled flexiblestructures. 2. Strongly improved modeling of the geometry and the kinematics (presently for non-trimmed NURBS surfaces) applying IGA andan exact coupling layer ECL. 3. Application of the newly developed coupling software EMPIRE for a NURBS-based geometry modeling. 4. First application of the new FSI simulation methodology to an inflated membrane structure. In the continuation the final goal is pursued:On the fluid side the eddy-resolving scheme and the directly connected FSI coupling algorithm has to be developed further in two regards: With respect to numerical/methodical issues an appropriate grid deformation algorithm has to be developed, which allows to transfer the newly achieved high grid quality of the surface mesh at the interface to the CFD volume grid. However, it is decisive to take distinctly the additional computational effort into account and to also consider the special requirements of the coupled LES-FSImethodology. With respect to physical/methodical issues a realistic description of the turbulent inflow conditions is urgentlyrequired. However, since lightweight structures are mainly loaded by sporadically appearing strong wind gusts, a turbulence inflowgenerator will be developed which takes this highly dynamic load scenario into account.On the structural side the main focus lies on the further methodical developments of the patch and surface coupling methods forpractically relevant cases of trimmed multi-patch geometries generated by CAD. The goal is to provide an appropriate geometric and kinematic formulation which possesses suitable geometric surface properties also on trimmed patches and at patch interfaces (trimmed, non-trimmed, etc.) and fulfill the requirements of the high resolution of the very fine LES grids. Two strategies are further developed: (1) A direct surface coupling of the FVM-solver with the isogeometric structural model and (2) a coupling to arbitrary structural models such as classical FEM possessing lower continuity properties using ECL as a mediator layer.Based on this entire methodology, detailed simulations and analyses of realistic flexible structures exposed to turbulent wind flows including strong gusts will be considered.
该项目的目标是开发一种优化的方法,用于模拟湍流风中轻质柔性结构的瞬态流固耦合。对于轻质结构的设计,与高涡流的强相互作用是至关重要的。在第一阶段,一个专门的分区FSI模拟方法的基础上,以及建立solvers为两个学科和耦合接口的开发和评估,考虑到这两个领域的具体属性和特征尺度。主要成果有:1.稳健、高效、全面验证的涡解方法(LES)与薄壁柔性结构耦合方法。2.应用伊加和精确耦合层ECL,大大改进了几何和运动学建模(目前用于非裁剪NURBS曲面)。3.应用新开发的耦合软件EMPIRE进行基于EBS的几何建模。4.首次将新的流固耦合模拟方法应用于充气膜结构。在继续的最终目标是追求:在流体方面的涡解决方案和直接连接的流固耦合算法必须在两个方面进一步发展:关于数值/方法问题,一个适当的网格变形算法必须开发,这使得新实现的高网格质量的表面网格在界面上的CFD体积网格。然而,它是决定性的,以明确考虑到额外的计算工作,并考虑耦合LES-FSI方法的特殊要求。关于物理/方法问题,迫切需要对湍流入流条件进行现实的描述。然而,由于轻型结构主要是由偶尔出现的强风阵风,湍流inflowgenerator将开发这一高度动态的负载scenaries.On结构方面的主要重点在于进一步有条不紊的发展的补丁和表面耦合方法为实际相关的情况下,修剪多补丁的几何形状的CAD生成。 我们的目标是提供一个适当的几何和运动学公式,具有适当的几何表面特性,也修剪补丁和补丁接口(修剪,非修剪等)。 满足极细LES网格高分辨率的要求。进一步发展了两种策略:(1)FVM求解器与等几何结构模型的直接表面耦合和(2)耦合到任意结构模型,例如使用ECL作为中介层的具有较低连续性属性的经典FEM。基于这整个方法,将考虑暴露于湍流风(包括强阵风)的真实柔性结构的详细模拟和分析。

项目成果

期刊论文数量(11)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Numerical FSI investigation based on LES: Flow past a cylinder with a flexible splitter plate involving large deformations (FSI-PfS-2a)
Enhanced injection method for synthetically generated turbulence within the flow domain of eddy-resolving simulations
涡流解析模拟流域内综合生成湍流的增强注入方法
  • DOI:
    10.1016/j.camwa.2017.12.012
  • 发表时间:
    2018
  • 期刊:
  • 影响因子:
    0
  • 作者:
    De Nayer;Schmidt;Breuer
  • 通讯作者:
    Breuer
Domain Decomposition Methods and Kirchhoff-Love Shell Multipatch Coupling in Isogeometric Analysis
等几何分析中的域分解方法和Kirchhoff-Love壳多面体耦合
  • DOI:
    10.1007/978-3-319-23315-4_4
  • 发表时间:
    2015
  • 期刊:
  • 影响因子:
    0
  • 作者:
    Apostolatos;Breitenberger;Wüchner;Bletzinger
  • 通讯作者:
    Bletzinger
Assessment and improvement of mapping algorithms for non-matching meshes and geometries in computational FSI
  • DOI:
    10.1007/s00466-016-1262-6
  • 发表时间:
    2016-05
  • 期刊:
  • 影响因子:
    4.1
  • 作者:
    T. Wang;R. Wüchner;S. Sicklinger;K. Bletzinger
  • 通讯作者:
    T. Wang;R. Wüchner;S. Sicklinger;K. Bletzinger
Experimental Investigation and Large-Eddy Simulation of the Turbulent Flow past a Smooth and Rigid Hemisphere
  • DOI:
    10.1007/s10494-015-9690-5
  • 发表时间:
    2016-07-01
  • 期刊:
  • 影响因子:
    2.4
  • 作者:
    Wood, Jens Nikolas;De Nayer, Guillaume;Breuer, Michael
  • 通讯作者:
    Breuer, Michael
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Professor Dr.-Ing. Kai-Uwe Bletzinger其他文献

Professor Dr.-Ing. Kai-Uwe Bletzinger的其他文献

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{{ truncateString('Professor Dr.-Ing. Kai-Uwe Bletzinger', 18)}}的其他基金

Integrated form finding, simulation and optimization using the generalized force density method based on mixed functionals
使用基于混合泛函的广义​​力密度方法集成找形、仿真和优化
  • 批准号:
    434336509
  • 财政年份:
    2020
  • 资助金额:
    --
  • 项目类别:
    Research Grants
The Method of Generalized Influence functions - Adjoint Sensitivity Analysis for the Effective and Efficient Numerical Design of Structures with special Application for Reliability and Uncertainty Modelling, 2nd research period
广义影响函数方法 - 有效且高效的结构数值设计的伴随敏感性分析,特别应用于可靠性和不确定性建模,第二研究期
  • 批准号:
    312865274
  • 财政年份:
    2016
  • 资助金额:
    --
  • 项目类别:
    Priority Programmes
Fluid-Structure-Characteristics of Flexible Wings for Wind Turbines
风力发电机柔性翼的流体结构特性
  • 批准号:
    280772364
  • 财政年份:
    2015
  • 资助金额:
    --
  • 项目类别:
    Research Grants
Computergestützte Methoden der Formoptimierung und ihre Einbettung in den Entwicklungszyklus versteifter Bleche im Automobilbau
形状优化的计算机辅助方法及其在汽车制造中加强板开发周期中的嵌入
  • 批准号:
    193761655
  • 财政年份:
    2011
  • 资助金额:
    --
  • 项目类别:
    Research Grants (Transfer Project)
Nonlinear Optimization of Geometrical Defined Joints for Spatial Curved Precast Concrete Components Considering Different Load Cases and the Influence of Material and Structural Behavior Aspects using Isogeometric Techniques
考虑不同荷载情况以及使用等几何技术的材料和结构行为方面的影响,对空间弯曲预制混凝土构件的几何定义接头进行非线性优化
  • 批准号:
    198016927
  • 财政年份:
    2011
  • 资助金额:
    --
  • 项目类别:
    Priority Programmes
Structural optimization of shape adaptive structures
形状自适应结构的结构优化
  • 批准号:
    189566908
  • 财政年份:
    2010
  • 资助金额:
    --
  • 项目类别:
    Research Grants
Simultane Analyse und Formoptimierung geometrisch nichtlinearer Schalenstrukturen mit verallgemeinerter numerischer Pfadverfolgung
利用广义数值路径追踪对几何非线性壳结构进行同步分析和形状优化
  • 批准号:
    62072352
  • 财政年份:
    2008
  • 资助金额:
    --
  • 项目类别:
    Research Grants
Experimentelle Analyse und numerische Modellierung der Deformation dehnfähiger Textilien und deren Wechselwirkung auf Tragkörper
弹性织物变形及其与支撑体相互作用的实验分析和数值模拟
  • 批准号:
    84928300
  • 财政年份:
    2008
  • 资助金额:
    --
  • 项目类别:
    Research Grants
Erweiterte Simulationsmethoden für pneumatische Tragstrukturen und deren experimentelle Validierung
气动支撑结构的先进模拟方法及其实验验证
  • 批准号:
    65041711
  • 财政年份:
    2008
  • 资助金额:
    --
  • 项目类别:
    Research Grants (Transfer Project)
Numerische Modellierung von Mauerwerk mit diskreten Elementen auf Basis experimenteller Methoden
基于实验方法的离散单元砌体数值模拟
  • 批准号:
    32031578
  • 财政年份:
    2007
  • 资助金额:
    --
  • 项目类别:
    Research Grants

相似国自然基金

软坚散结中药抑制肿瘤相关成纤维细胞研究
  • 批准号:
    81173376
  • 批准年份:
    2011
  • 资助金额:
    57.0 万元
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Resolving conflicts between decision-making algorithms
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A Machine-Learning Based Software Widget for Resolving Metabolite Identities
用于解析代谢物身份的基于机器学习的软件小部件
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    9223450
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