Coupled simulation of flow-structure interaction in turbomachinery

Carstens, V.; Kemme, Ralf; Schmitt, S.

doi:10.1016/s1270-9638(03)00016-6

Cited by 70 publications

(40 citation statements)

References 15 publications

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“…A typical numerical coupling of the CFD and CSD solvers is illustrated by Fig. 1, following [1][2][3]. The drawback of the time-staggered algorithms is that the structure and fluid states are not determined exactly at the same time and thus the energy transfer from fluid to structure and reverse cannot be accurately predicted.…”

Section: Numerical Algorithms and Resultsmentioning

confidence: 99%

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The numerical simulation of a typical fluid‐structure interaction problem

Stoia-Djeska

Frunzulică

2009

Proc Appl Math and Mech

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To determine the dynamic response of a structure under the influence of the fluid flow one must solve a coupled computational fluid dynamics (CFD) and computational structural dynamics (CSD) mathematical problem. This paper presents the comparison of two methods for the calculation of the fluid-structure interaction. The first one is of explicitimplicit type and uses a staggered time advancement of the fluid and structure problems. The second uses a fully implicit discretization in the physical time of the fluid-structure equations and an explicit advancement in the dual-time. The physical fluid-structure problem is accompanied by the equations of the mesh motion, which are written as for a pseudo-structural system with its own dynamics. Representative numerical results are presented for the two degrees of freedom tipical section in unsteady transonic flow.

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Section: Numerical Algorithms and Resultsmentioning

confidence: 99%

“…However, to determine the dynamic response of a nonlinear fluid-structure aeroelastic system one must solve simultaneously in time the CFD and CSD equations, [1][2][3][4][5][6]. This can be done either with time-staggered algorithms, [1][2][3], or with fully coupled algorithms, [4][5][6].…”

Section: Introductionmentioning

confidence: 99%

The numerical simulation of a typical fluid‐structure interaction problem

Stoia-Djeska

Frunzulică

2009

Proc Appl Math and Mech

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“…8,9 Each particular problem has its own requirements in terms of the physics involved, and as a result several methods have arisen specifically oriented to solve them. [10][11][12][13][14][15][16][17][18][19] Given the complex physics involved in the solution of computational FSI, where strong non-linearities may occur both in each domain separately and in the interaction itself, the performance of the solvers employed in highly parallel environments becomes a key issue, specially when addressing large problems.…”

Section: Introductionmentioning

confidence: 99%

Towards a Fluid-Structure Interaction Solver for Problems with Large Deformations Within the Open-Source SU2 Suite

Sánchez

Palacios

Economon

et al. 2016

57th AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference

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This paper describes a new framework for Fluid-Structure Interaction (FSI) modelling within the open-source code SU2. SU2 has been developed to solve complex, multi-physics problems described by Partial Differential Equations (PDEs), with an emphasis on problems involving aerodynamic shape optimization. Due to its modularity, the code provides an appropriate infrastructure for the solution of physical problems in several disciplines. This work provides SU2 with new tools that expand its capabilities in the fields of structural analysis and FSI. The focus will be on geometrically-nonlinear deformable solids in low-speed external flows.A Finite Element (FE) structural solver, able to deal with geometrical and material non-linearities in a static and a dynamic setting, has been built within the framework of SU2 alongside the existing solvers. Following the original object-oriented architecture in C++, a new structure compliant with the CFD solver has been developed. These new features will serve as a basis for future developments of FE-based strategies for the solution of PDEs. The structural solver has been coupled with the original fluid solver in SU2 using a partitioned approach. The structure of the code was fully recast to allow analysis across multiple zones and physical problems, currently limited to problems involving fluid and structural analysis. Both loosely-and strongly-coupled strategies are available for the solution of the coupled FSI problem.Finally, the validity of the implementations is assessed by studying the behavior of a rigid square with a flexible cantilever at low Reynolds number. The results obtained demonstrate the capabilities of these new developments and further address the physics behind this benchmark problem. * Graduate Student, Department of Aeronautics, 363A Roderic Hill Building; r.sanchez-fernandez14@imperial.ac.uk. AIAA Student Member.

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“…Modern aerodynamics originating from Prandlt's boundary-layer theory acquired maturity over a long time by many theoretical [36][37][38][39], experimental [40][41][42][43][44][45] and numerical [46][47][48][49][50][51][52][53] studies. The detailed description of these works is beyond the scope of the project.…”

Section: Introductionmentioning

confidence: 99%

Efficient Simulation and Novel Modeling by Using Generic Three-Dimensional Exact Solutions to Analyze Transport Dynamics in Turbulent Vortices

Bhattacharya¹

2009

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REPORT DOCUMENTATION PAGEThe public reporting burden for this collection of information is estimated to average 1 hour per response, including the time for _ , «.a,., y existing data sources, gathering and maintaining the data needed, and completing and reviewing the collection of information. Send comments regarding this burden estimate or any other aspect of this collection of information, including suggestions for reducing the burden, to the Department of Defense, Executive Service Directorate (0704-0188). Respondents should be aware that notwithstanding any other provision of law, no person shall be subject to any penalty for failing to comply with a collection of information if it does not display a currently valid OMB control number. PLEASE DO NOT RETURN YOUR SPONSORING/MONITORING AGENCY NAME(S) AND ADDRESS(ES)AFOSR 875 N RANDOLPH ST ARLINGTON, VA 22203 Dr. John Schmisseur/NA SPONSOR/MONITOR'S ACRONYM(S) SPONSOR/MONITOR'S REPORT NUMBER(S) DISTRIBUTION/AVAILABILITY STATEMENTDistribution A -Approved for public release SUPPLEMENTARY NOTES ABSTRACTIn this project, we have formulated an alternative boundary-layer theory. This new analysis will be able to mathematically describe flow-separation unlike the classical theory. In our research, we have partially validated the developed theory and concluded that approach has considerable potential to account for flow-separation. The effective description of separated flow can potentially lead to a fast simulation-algorithm for aerodynamic computation. Our estimate predicts that this semianalytical scheme will compute the lift and drag on an aerodynamic body in less than O.lsec with less than l\% relative error. This is more than hundredfold increase over current simulation-efficiency. The enhanced efficiency will enable hitherto impossible exploration of new designs for maximization of the lift to drag ratio. In the future, this will revolutionize aviation technology by the development of bio-inspired aviation mechanism and other novel systems. Such improvements will help in energy-savings and pollution control by reducing fuel consumptions. SUBJECT TERMSAlternative boundary-layer theory, flow-separation, fast aerodynamic algorithm Flow-separation from a rigid body is an unsolved problem in theoretical fluid mechanics in spite of the maturity of this field. Classical boundary-layer theory cannot provide a complete description and quantitative estimates for such phenomenon. For example, it is not possible to determine the vortical structures in separated flows by using boundary-layer equation in the wake region [1][2][3][4][5][6][7]. Similarly, there is no easy way to predict the strength of the eddies without extensive computations [8,9]. Unfortunately, subsequent theoretical developments, like triple-deck theory [10][11][12][13] or other viscous-inviscid analysis [14-21] have not been able to overcome these deficiencies.The lack of mathematical understanding of flow-separation is a severe hindrance in aerodynamic analysis. In absence of an analytical method, the bru...

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Coupled simulation of flow-structure interaction in turbomachinery

Cited by 70 publications

References 15 publications

The numerical simulation of a typical fluid‐structure interaction problem

The numerical simulation of a typical fluid‐structure interaction problem

Towards a Fluid-Structure Interaction Solver for Problems with Large Deformations Within the Open-Source SU2 Suite

Efficient Simulation and Novel Modeling by Using Generic Three-Dimensional Exact Solutions to Analyze Transport Dynamics in Turbulent Vortices

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