Download or read book Investigation of Numerical Approaches to Analyze Flapping Wings written by Nitin Bhagat and published by . This book was released on 2011 with total page 158 pages. Available in PDF, EPUB and Kindle. Book excerpt: For centuries, the agility and maneuverability of flying insects have been an inspiration to fluid dynamists. A large number of research activities have been conducted within the biological, aerodynamics, and computational science communities to understand the complex flow fields around flapping insects and their capability for rapid maneuvers. However, the understanding of these natural phenomena is still in its infancy. Recent experimental flow visualizations have shown the complex vortical structures around flapping wings and vortex interactions. Even with the advent of faster and better computer processors and improved numerical algorithms, computational fluid dynamics (CFD) techniques to accurately predict flow features around flapping wings lag behind. One of the driving forces for the study of insect flight is its applicability for micro-air vehicles (MAVs). Micro Air Vehicles (MAVs) have potential uses for surveillance, communication, hostage rescue missions, and sensor placement for chemical, biological, and nuclear materials. However, technical challenges such as small scale power generation, navigation, propulsion, and most importantly production of necessary aerodynamics forces have hindered the advancement of this technology and the routine use of MAVs. The most effective way to generate aerodynamic forces for such applications is by the use of flapping wings. Different components that are needed for the analysis and prediction of aerodynamic behavior of flapping wing flight are evaluated in this study. These components include: (a) library-based approach for adding overset capability to handle large relative motion between different objects. and (b) the use of a generalized mesh for handling complex geometries. Different interpolation methods for the transfer of information across different layers of generalized overset meshes are evaluated. The effect of primitive vs. conservative interpolation of flow variable is evaluated using a moving discontinuity across the overlapping region. Also, a preliminary study has been conducted to couple the developed flow simulation system with the FSI library developed at the University of Alabama at Birmingham. The focus of the research work is to explore various approaches for moving body problems and to investigate the developed computational system for its applicability and exploration for aerodynamic analysis of flapping wing flight.

Download or read book Flapping Wing Vehicles written by Lung-Jieh Yang and published by CRC Press. This book was released on 2021-09-30 with total page 427 pages. Available in PDF, EPUB and Kindle. Book excerpt: Flapping wing vehicles (FWVs) have unique flight characteristics and the successful flight of such a vehicle depends upon efficient design of the flapping mechanisms while keeping the minimum weight of the structure. Flapping Wing Vehicles: Numerical and Experimental Approach discusses design and kinematic analysis of various flapping wing mechanisms, measurement of flap angle/flapping frequency, and computational fluid dynamic analysis of motion characteristics including manufacturing techniques. The book also includes wind tunnel experiments, high-speed photographic analysis of aerodynamic performance, soap film visualization of 3D down washing, studies on the effect of wing rotation, figure-of-eight motion characteristics, and more. Features Covers all aspects of FWVs needed to design one and understand how and why it flies Explains related engineering practices including flapping mechanism design, kinematic analysis, materials, manufacturing, and aerodynamic performance measures using wind tunnel experiments Includes CFD analysis of 3D wing profile, formation flight of FWVs, and soap film visualization of flapping wings Discusses dynamics and image-based control of a group of ornithopters Explores indigenous PCB design for achieving altitude and attitude control This book is aimed at researchers and graduate students in mechatronics, materials, aerodynamics, robotics, biomimetics, vehicle design and MAV/UAV.

Download or read book Numerical Investigation of Flapping Wings written by Alexander Itenberg and published by . This book was released on 2006 with total page 198 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Numerical and Analytical Investigation of the Unsteady Lift Characteristics of Plunging Pitching Flapping Wings written by Ryan Muoio and published by . This book was released on 2016 with total page 109 pages. Available in PDF, EPUB and Kindle. Book excerpt: Three methods for computing the unsteady lift response due to basic kinematic motion---plunging, pitching, and flapping---are compared. The first two methods are analytical models developed by Theodorsen and Leishman, while the third method is a numerical method known as the unsteady vortex lattice method. The MATLAB code for this numerical method is included. All calculations are evaluated for the potential flow case.

Download or read book An Experimental and Numerical Investigation of Flapping wing Propulsion written by K. D. Jones and published by . This book was released on 1999 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Numerical Study of Flapping Wing written by San-Yih Lin and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Thesis Ph D Mechanical Engineering New Mexico State University 2012 written by Tao Yang and published by . This book was released on 2012 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on with total page 994 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Fixed and Flapping Wing Aerodynamics for Micro Air Vehicle Applications written by Thomas J. Mueller and published by AIAA. This book was released on 2001 with total page 614 pages. Available in PDF, EPUB and Kindle. Book excerpt: This title reports on the latest research in the area of aerodynamic efficency of various fixed-wing, flapping wing, and rotary wing concepts. It presents the progress made by over fifty active researchers in the field.

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 456 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Monthly Catalogue United States Public Documents written by and published by . This book was released on 1995 with total page 1036 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Aeronautical Engineering written by and published by . This book was released on 1991 with total page 538 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Potential Flow Based Aerodynamic and Aeroelastic Analysis of Flapping Wings written by and published by . This book was released on 2002 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The motivation for this research is the importance that the modeling of aerodynamics and aeroelasticity of flapping wings has had in the last decade. The development of flapping wings Micro Air Vehicles (MAV) has captured a huge interest in the recent past, due to the several disciplines involved in the subject. In this dissertation the attention is focused on the flow and its interactions with the structure. Even though experiments have had a fundamental role in the explanation of the aerodynamics around a flapping wing, it is widely accepted that a key aspect in the development of future flapping wings MAVs is the modeling. The aim of the project is to investigate different techniques for the development of a numerical framework used in the prediction of the unsteady aerodynamic forces on flapping wings. The understanding of the phenomena occurring on flapping wings is attempted first with very basic models. The research is carried out based on potential flow assumptions: the flow in initially treated as irrotational and inviscid. Although the assumptions are very strong, it is shown that the mechanisms of lift and thrust production can be described, together with the convection of the wake behind the wing. The limitation of potential flow models is the incapacity to describe flows that are separated over a large portion of the wing. The modeling of this issue is particularly important for flapping wings, where the separation is exploited in order tin increase the forces produced. The development of a Vortex Particle Method (VPM) is attempted, with wake elements released at each time step from all the panels of the airfoil. The advantage of Vortex Particle Methods over panel methods is that they represent more realistically the flow around the wing. The drawback is the greater complexity and longer running times. Aeroelasticity is discussed as well, as it is believed that the wing flexibility can enhance the performance of flapping wings. The thesis investigates t.

Download or read book Numerical and Experimental Studies of Flexibility in Flapping Wing Aerodynamics written by Jonathan Edward Toomey and published by . This book was released on 2009 with total page 378 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Journal of the Indian Institute of Science written by Indian Institute of Science, Bangalore and published by . This book was released on 1993 with total page 476 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Applied Mechanics Reviews written by and published by . This book was released on 1966 with total page 712 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book International Aerospace Abstracts written by and published by . This book was released on 1999 with total page 1020 pages. Available in PDF, EPUB and Kindle. Book excerpt: