Abstract
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.
Highlights
Among the many scientific and engineering fields, the objects of study are set out by the various types of physical loads in the structure, such as: aerodynamic loads, thermal loads, electrical loads, etc., in order to get more accurate results, different kind of subjects need to be coupled with, mainly on account of the coupling of two or more the result of the interaction between physical fields
fluid-structure interaction (FSI) which is an important area of research, the main consideration fluid coupling between the fluid and solid structure interaction, and its main feature is the interaction between the two-phase medium, the deformation of the solid in the fluid loading will occur deformation or movement, solid deformation or movement, in turn, changes the distribution and size of the fluid load
This paper presented the FSI method of one-way coupling and two-way coupling of the engine blade
Summary
Among the many scientific and engineering fields, the objects of study are set out by the various types of physical loads in the structure, such as: aerodynamic loads, thermal loads, electrical loads, etc., in order to get more accurate results, different kind of subjects need to be coupled with, mainly on account of the coupling of two or more the result of the interaction between physical fields. FSI which is an important area of research, the main consideration fluid coupling between the fluid and solid structure interaction, and its main feature is the interaction between the two-phase medium, the deformation of the solid in the fluid loading will occur deformation or movement, solid deformation or movement, in turn, changes the distribution and size of the fluid load. Important in aerospace applications, the current research more and more attention has been paid in this area, many disciplines of research methods were successfully applied into this study. The method for fluid-structure interaction in engine blades was reviewed, and the application of fluid-solid coupling algorithm was proposed [1].
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