Model Configuration for the Validation of Thermal-Mechanical Fluid-Structure-Interactions

Haupt, Matthias; Kowollik, D.; Horst, Peter; Niesner, Reinhold; Esser, Burkard; Gülhan, Ali

doi:10.1115/esda2012-82908

Cited by 4 publications

(5 citation statements)

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“…creep or viscoplasticity, are neglegted but will be a topic in the further work. More details about this experimental configuration can be found in [28]. In summary, the thermal and mechnical couplings are again well predicted in comparion with the experiments and the comparison between the two used CSM solvers Abaqus and Ansys demonstrates the easy replacement of the modular blocks in the coupling environment.…”

Section: Validation and Applicationsupporting

confidence: 65%

See 1 more Smart Citation

Fluid-Structure-Interaction in Rocket Thrust Chambers Simulation and Validation

Haupt

Kowollik

Lindhorst

et al. 2016

DDF

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This paper describes the simulation approach for the analysis of fluid structure interactions(FSI) of rocket thrust chambers. It is based on a partitioned approach and includes several buildingblocks: codes for computational fluid dynamics (CFD) and computational structural mechanics(CSM) as well as techniques to handle non conforming surface grid and to solve the nonlinear coupledequations in time. One target application is the life time prediction and to simulate the structuralfatigue behaviour. Thus, cyclic loading conditions are important and are the motivation for a surrogatemodel, which is the focus of this contribution. It uses nonlinear mapping algorithms between surfacetemperature and heat flux in combination with a reduction of dimensionality via proper orthognal decomposition(POD). It can be used as a replacement of the time consuming CFD code and acceleratesthe FSI analysis several orders in time. Some applications regarding the validation of the FSI softwareenvironment finalize the description of the simulation approach showing that the simulation ofcomplex and multidisciplinary problems is laborious and needs a widespread understanding.

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Section: Validation and Applicationsupporting

confidence: 65%

“…2. These building blocks are implemented in the coupling environment ifls for a distributed hardware environment, see [27,26,28]. Several CFD and CSM codes are adapted via CoProcesses (e.g.…”

Section: Coupled Problem Formulationmentioning

confidence: 99%

Fluid-Structure-Interaction in Rocket Thrust Chambers Simulation and Validation

Haupt

Kowollik

Lindhorst

et al. 2016

DDF

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“…References [27,42] investigated a metallic structure using DIC and obtained significant plastic deformation. These results were compared to coupled simulations demonstrating the feasibility of this approach.…”

Section: High Temperature Fsimentioning

confidence: 99%

Experiments on Aerothermal Supersonic Fluid-Structure Interaction

Daub

Willems

Esser

et al. 2020

Notes on Numerical Fluid Mechanics and Multidisciplinary Design

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Mastering aerothermal fluid-structure interaction (FSI) is crucial for the efficient and reliable design of future (reusable) launch vehicles. However, capabilities in this area are still quite limited. To address this issue, a multidisciplinary experimental and numerical study of such problems was conducted within SFB TRR 40. Our work during the last funding period was focused on studying the effects of moderate and high thermal loads. This paper provides an overview of our experiments on FSI including structural dynamics and thermal effects for configurations in two different flow regimes. The first setup was designed to study the combined effects of thermal and pressure loads. We investigated a range of conditions including shock-wave/boundary-layer interaction (SWBLI) with various incident shock angles leading to, in some cases, large flow separation with high amplitude temperature dependent panel oscillations. The respective aerothermal loads were studied in detail using a rigid reference panel. The second setup allowed us to study the effects of severe heating leading to plastic deformation of the structure. We obtained severe localized heating resulting in partly plastic deformations of more than 12 times the panel thickness. Furthermore, the effects of repeated load cycles were studied.

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“…In Fig. 2 [8,13,20] mation of the panel of 12 mm takes 60 s to fully develop, it is rather slow. Therefore, an equilibrium state for fluid and solid can be assumed in each time step.…”

Section: Fluid-structure Interactionmentioning

confidence: 99%

“…The fluid and structural computation are coupled by the FSI coupling tool ifls which is provided by the IFL at TU Braunschweig. The software implementation of the FSI is done by [8,13,20].…”

Section: Introductionmentioning

confidence: 99%

Numerical Modelling of Fluid-Structure Interaction for Thermal Buckling in Hypersonic Flow

Martin

Daub

Esser

et al. 2020

Notes on Numerical Fluid Mechanics and Multidisciplinary Design

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Experiments have shown that a high-enthalpy flow field might lead under certain mechanical constraints to buckling effects and plastic deformation. The panel buckling into the flow changes the flow field causing locally increased heating which in turn affects the panel deformation. The temperature increase due to aerothermal heating in the hypersonic flow causes the metallic panel to buckle into the flow. To investigate these phenomena numerically, a thermomechanical simulation of a fluid-structure interaction (FSI) model for thermal buckling is presented. The FSI simulation is set up in a staggered scheme and split into a thermal solid, a mechanical solid and a fluid computation. The structural solver Abaqus and the fluid solver TAU from the German Aerospace Center (DLR) are coupled within the FSI code ifls developed at the Institute of Aircraft Design and Lightweight Structures (IFL) at TU Braunschweig. The FSI setup focuses on the choice of an equilibrium iteration method, the time integration and the data transfer between grids. To model the complex material behaviour of the structure, a viscoplastic material model with linear isotropic hardening and thermal expansion including material parameters, which are nonlinearly dependent on temperature, is used.

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Model Configuration for the Validation of Thermal-Mechanical Fluid-Structure-Interactions

Cited by 4 publications

References 0 publications

Fluid-Structure-Interaction in Rocket Thrust Chambers Simulation and Validation

Fluid-Structure-Interaction in Rocket Thrust Chambers Simulation and Validation

Experiments on Aerothermal Supersonic Fluid-Structure Interaction

Numerical Modelling of Fluid-Structure Interaction for Thermal Buckling in Hypersonic Flow

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