International Research Journal of Engineering and Technology (IRJET) Volume: 09 Issue: 10 | Oct 2022
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e-ISSN: 2395-0056 p-ISSN: 2395-0072
AEROELASTIC ANALYSIS OF MOVING BLADE Paras Kumar1, Mr. Praveen Sharma2 1Student,
Department of Mechanical Engineering, Pm College of Engineering, Kami Road, Sonepat, Haryana(India)-131001 2Guide, Department of Mechanical Engineering, Pm College of Engineering, Kami Road, Sonepat, Haryana(India)-131001 ---------------------------------------------------------------------***---------------------------------------------------------------------
Abstract - This research focuses on fluid-structure interaction (FSI), a popular numerical computation and simulation topic. FSI play an important role in a variety of engineering and scientific fields, but because to their transdisciplinary nature and strong non-linear behaviour, studying them remains difficult. When a unsolidified collides with a compacted construction, it applies compression on it, causing the structure to deform. In turn, the buckled figure has an effect on the flow field. The cyclic nature of the stirring watery causes a varied outline of strains on the construction.
the true representative in FSI requires completely coupled numerical modelling. Bridges under high winds, structural strain and distortion in turbine blades, and aircraft wings are all well-known examples of dynamic instability in structural engineering. Several traditional FSI trials gradually simplify either the fluid or structural side, resulting in design accuracy that is insufficient. The advanced technique is based on the use of finite element formulations for solid structures and a finite volume model for fluids, which are the most well-developed and widely utilised techniques in their respective domains. On the other hand, there are substantial computational costs due to the necessity for global re-meshing at each time step, and challenges arise in particular with free surface flows or deformations superimposed on large rigid body motion on the structural side.
The FSI analysis was be in charge on a moving blade of a wind turbine in this project. The investigation was successful because to the separation method, which used two types of interaction to simulate fluid-structural interactions. By using ANSYS APDL, the relevant calculation of the fluid and structural model can be obtained. As a pre-processing technique, transient structural and CFD fluent are used to perfect the full field of computational and volume mesh. The physical dynamic reaction of a structure under unsteady fluid pressure stresses is formed using ANSYS Mechanical (transient structural). The two software (ANSYS Fluent and Mechanical) are linked (data exchange) in ANSYS Workbench utilising System Coupling. A modal analysis was helpful in determining the dynamic reaction of a construct
Starting with a broad overview of the problem situation and theoretical backdrop from both a solid and a fluid perspective, then moving on to the implementation and construction of a solution. To facilitate simulation and numerical analysis of coupled fluid structure problems, a mathematical model with an interface description is provided. Aero elasticity (fig. 1) is the study of how elastic, inertial, and aerodynamic forces interact with an elastic construction bare to fluid flow. The distortion is frequently believed to be minimal in classical elasticity theory, and the often ignored the dimension change, and measurements are made on the foundation of the initial figure. Furthermore, in the case of aeroelasticity, the situation is different. Because distortion is included in the measurement, elastic distortion plays an essential part in the measurement of external force in this scenario. Aero elasticity has a significant role in blade .
1. INTRODUCTION We may deduce from the literature review that blade life is influenced by structural characteristics as well as fluid flow distribution. Blade life has been diminished due to high vibrations caused by air flow dispersion over it. The life of the supporting blade structure has been reduced as a result of varied mode forms that evolve at different frequencies. Due to the varied mode forms, the structures near the blade root will be subjected to extremely high amounts of stress. When we investigate the structure of the blade while assuming constant loads, we will notice a difference in stresses. The load will not be distributed evenly across the blade construction. Loads will vary based on the pressure distribution over the blade due to the high-speed air flow. FSI plays a vital part in the complicated realm of multiphysics phenomena. The fundamental processes of interaction between fluid and solid structures create a variety of obstacles, therefore
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