An Analysis Method of Torpedo Shell Fluid-Structure Interaction Based on Fluent and ANSYS

2012 ◽  
Vol 256-259 ◽  
pp. 2844-2848
Author(s):  
Nan Li ◽  
Bao Wei Song ◽  
Kai Wei
Keyword(s):  
Structural Analysis ◽  
Shell Structure ◽  
Interaction Analysis ◽  
Fluid Structure Interaction ◽  
Analysis Method ◽  
Analysis Software ◽  
Fluid Structure ◽  
Structure Interaction ◽  
Fluid Analysis ◽  
Shell Analysis

At present, the torpedo shell analysis includes fluid analysis and structural analysis. The fluid pressure distribution of torpedo surface is the results of the fluid analysis, and it is the outer load input of torpedo shell analysis. Meanwhile the results of torpedo shell structure analysis also play a important role in binding. So torpedo shell structure analysis is a fluid-structure interaction analysis. With the development of engineering analysis software, Fluid analysis software Fluent and structural analysis software ANSYS are able to analyze torpedo fluid and structural. But there has not been a specialized software to handle fluid-structure interaction analysis. This paper coupled Fluent and ANSYS, and got an analysis method for torpedo shell fluid-structure interaction analysis base on Fluent and ANSYS

Fluid-Structure Interaction Analysis for Resonance Investigation of Pump-Turbine Runner

2015 ◽  
Author(s):  
Sadao Kurosawa ◽  
Kiyoshi Matsumoto ◽  
Junpei Miyagi ◽  
Lingyan He ◽  
Zhengwei Wang
Keyword(s):  
Dynamic Stress ◽  
Interaction Analysis ◽  
Fluid Structure Interaction ◽  
Forced Response ◽  
Structural Deformation ◽  
Analysis Method ◽  
Pump Turbine ◽  
Fluid Structure ◽  
Structural Interaction ◽  
Structure Interaction

In the development of high head pumped storage projects, one of the critical problems is the strength of pump-turbine runners. In this paper, the analysis method of forced response of the runner structure is presented and the prediction accuracy is validated by comparing with the results of the prototype head model test. And the application results for resonance of pump-turbine startup process are shown. Basically it is necessary for the prediction of the runner dynamic stress to use a combined approach of fluid dynamics and structural dynamics. Due to the high complexity of the phenomena and the limitation of computer power, the numerical simulation for the fluid-structural interaction phenomena was in the past too expensive and not feasible. However, due to consideration that vibration displacement is very small, such complex analysis has been handled as one-way fluid-structural interaction problem. Namely the excitation force is calculated by whole passage flow analysis that is ignored the structural deformation and takes into account the rotor-stator interaction effect. And the dynamic stress of runner is calculated by the transient response analysis taken account into the added mass effect of surrounding water using an acoustic fluid formulation. Due to such a simplification, it has been possible to evaluate the runner dynamic stress in a short time. As a result, it was confirmed that the dynamic behavior such as runner vibration and pressure fluctuation under turbine operating range and the runner stress can be analyzed with the sufficient accuracy and due to applying as standard procedure in TOSHIBA, it can be avoided a failure risk in an early design phase. Moreover the fluid-structure interaction analysis method in this paper can be easily adapted to apply for other type of turbines, such as Francis turbines and Kaplan turbines.

scholarly journals Research on Numerical Method for Fluid-Structure Interaction in Engine Blades

2011 ◽  
Vol 2-3 ◽  
pp. 906-911
Author(s):  
Zhen Tan ◽  
Peng Zhang ◽  
Guang Yu Du ◽  
Bang Chun Wen
Keyword(s):  
Numerical Analysis ◽  
Interaction Analysis ◽  
Fluid Structure Interaction ◽  
Research Field ◽  
Analysis Method ◽  
Fluid Structure ◽  
Structure Interaction ◽  
Numerical Analysis Method ◽  
Advantages And Disadvantages ◽  
Fluid Solid Interaction

A numerical analysis method for fluid-structure interaction (FSI) to analyze engine blades dynamic response was presented. Fluid-structure interaction is an important research field. It is mostly studies the interaction between the influence upon the fluid by the deformation of the solids, the important characteristic of fluid-solid interaction mechanics is the fluid-solid interaction between the both phase mediums. The solutions of strongly coupling and weakly coupling were discussed firstly in this paper. We compared the advantages and disadvantages of the strongly coupling and weakly coupling. And using numerical analysis method based on weakly coupling, we established a fluid-solid interaction control equation taking solid and fluid as a unified mathematical model. And we study about blades deformation and displacement under the action of air loading in engine. Using computational structural dynamics (CSD) calculate the displacements of blades, and using computational fluidic dynamics (CFD) calculate the pressures of blades, completing the fluid-structure interaction analysis in engine blades by iterating this two values(the displacements and the pressures) until the computational convergence solution is obtained. At the end of this paper, the model of fluid-structure interaction and the simulate procession of the numerical analysis method were presented. Based on the analysis, the simulation result is qualitatively discussed referring to the factual conditions of the engine for validating the feasibility of analysis method.

Extensive 3D analysis for fluid–structure interaction of spanwise flexible plunging wing 3D FSI Analysis for Spanwise Flexible Plunging Wing

2019 ◽  
Vol 123 (1262) ◽  
pp. 484-506
Author(s):  
H. Cho ◽  
N. Lee ◽  
S.-J. Shin ◽  
S. Lee
Keyword(s):  
Stokes Equations ◽  
Fluid Structure Interaction ◽  
Three Dimensional ◽  
Shell Element ◽  
Coupling Scheme ◽  
3D Analysis ◽  
Analysis Method ◽  
Fluid Structure ◽  
Structure Interaction ◽  
Fluid Analysis

ABSTRACTIn this study, an improved fluid–structure interaction (FSI) analysis method is developed for a flapping wing. A co-rotational (CR) shell element is developed for its structural analysis. Further, a relevant non-linear dynamic formulation is developed based on the CR framework. Three-dimensional preconditioned Navier–Stokes equations are employed for its fluid analysis. An implicit coupling scheme is employed to combine the structural and fluid analyses. An explicit investigation of a 3D plunging wing is conducted using this FSI analysis method. A further investigation of this plunging wing is performed in relation to its operating condition. In addition, the relation between the wing’s aerodynamic performance and plunging motion is investigated.

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