In the first part, which is here presented, velocity components, turbulence intensity and the flow angle has been measured by means of a two-components crossed miniature hot-wire probe, which has been traversed circumferentially downstream of the swirler vanes. Results from the hot-wire anemometer measuring campaign allow basically to evaluate two main performance parameters which are the swirler velocity reduction coefficient and the mass averaged flow angle, that is actually the main indicator of the swirler capability to deflect the flow and consequently it influences largely the phenomena which can occur in the mixing tube or downstream of the discharge section.
A feasible satellite experiment for gas molecule-solid surface interaction studies: final report. A class of micromachined gyroscopes with increased parametric space. The 4-DOF dynamical system The 4-DOF dynamical system eliminates the necessity for mode-matching due to its wide operation frequency range, and reduces the damping sensitivity problem by operating away from resonance.
Thus, inherent disturbance rejection is achieved, providing reduced sensitivity to structural and thermal parameter fluctuations. The basic operational principles of the design concept were experimentally demonstrated, including the wide operation frequency band, and dynamic amplification providing high oscillation amplitudes without resonance. Coupled flow, thermal, and structural analysis of aerodynamically heated panels. Stability Criterion for a Finned Spinning Projectile. Calculus of variations in discrete space for constrained nonlinear dynamic optimization.
Scheduling of dynamic divide-and-conquer computations on multicomputers. Resource sharing interconnection networks in multiprocessors. Strength analysis of piezoceramic materials for structural considerations in energy harvesting for UAVs. Vibration energy harvesting has received considerable attention in the research community over the past decade. Typical vibration harvesting systems are designed to be added on to existing host structures and capture ambient vibration Typical vibration harvesting systems are designed to be added on to existing host structures and capture ambient vibration energy.
An interesting application of vibration energy harvesting exists in unmanned aerial vehicles UAVs , where a multifunctional approach, as opposed to the traditional method, is needed due to weight and aerodynamic considerations. The authors propose a multifunctional design for energy harvesting in UAVs where the piezoelectric harvesting device is integrated into the wing of a UAV and provides energy harvesting, energy storage, and load bearing capability.
The brittle piezoceramic layer of the harvester is a critical member in load bearing applications; therefore, it is the goal of this research to investigate the bending strength of various common piezoceramic materials.
Bending strength results are reported and can be used as a design tool in the development of piezoelectric vibration energy harvesting systems in which the active device is subjected to bending loads. Macro-fiber composite actuators for a swept wing unmanned aircraft. The purpose of the research presented here is to exploit actuation via smart materials to perform shape control of an aerofoil on a small aircraft and to determine the feasibility and advantages of smooth control surface deformations.
A type of piezoceramic composite actuator known as Macro-Fiber Composite MFC is used for changing the camber of the wings. Preliminary flight and wind-tunnel testing has demonstrated the stability and control of the concept. Flight tests were performed to quantify roll control using the MFC actuators.
Lift and drag coefficients along with pitch and roll moment coefficients were measured in a low-speed, open-section wind tunnel. A vortex-lattice analysis complemented the database of aerodynamic derivatives used to analyse control response. The research, for the first ti Distributed Modeling and Control of Adaptive Wings. Natarajan, Anand, Kapania, Rakesh, K.
Related Topics. Aerospace Engineering. Follow Following. Computational Fluid Dynamics. Fluid Mechanics. Aeronautical Engineering. Our Services Membership Advertise with us Reprints and permissions. Aerodynamics Review Articles Aerodynamics is the study of forces and the resulting motion of objects through the air. Aerodynamics can be defined as the way air moves around the things. The principles of aerodynamics explains how an aeroplane is able to fly in the atmosphere. There are four forces that acts on flight and they are: lift, weight, thrust and drag.
The force of aerodynamics comes from gravity pulling the objects down. This force makes the objects or things move up and down. So aerodynamics plays an important role in aerospace engineering. Review articles are the summary of current state of understanding on a particular research topic. They analyze or discuss research previously published by scientist and academicians rather than reporting novel research results.
Authors: Chang Liu and Kun Xu. Published on: 12 April The newly developed vortex-identification method, Liutex, has provided a new systematic description of the local fluid rotation, which includes scalar, vector, and tensor forms. However, the advantages of Liut Published on: 12 March Published on: 2 March Multiscale gas flows appear in many fields and have received particular attention in recent years. It is challenging to model and simulate such processes due to the large span of temporal and spatial scales.
Authors: Zhaoli Guo and Kun Xu. Content type: Review. Published on: 6 February In this paper, based on simplified Boltzmann equation, we explore the inverse-design of mesoscopic models for compressible flow using the Chapman-Enskog analysis. Starting from the single-relaxation-time Boltz Published on: 2 February In this era of fast-depleting natural resources, the hike in fuel prices is ever-growing. With stringent norms over environmental policies, the automotive manufacturers are on a voyage to produce efficient veh Authors: Devang S.
Published on: 28 January With the increasing of computing ability, large-scale simulations have been generating massive amounts of data in aerodynamics. Sort-last parallel rendering is the most classical image compositing method for l Published on: 27 January Thus, a conceptual design for a deflection device of a VTDP syst Published on: 21 January A high-order accurate reconstructed discontinuous Galerkin rDG method is developed for compressible inviscid and viscous flows in arbitrary Lagrangian-Eulerian ALE formulation on moving and deforming unstr Authors: Chuanjin Wang and Hong Luo.
Published on: 8 January The wall pressure has two distinct fr Citation: Advances in Aerodynamics 2 Published on: 14 December The evacuated tube transportation has great potential in the future because of its advantages of energy saving and environmental protection. The train runs in the closed tube at ultra-high speed. The heat quan Published on: 8 December The computation of compressible flows at all Mach numbers is a very challenging problem.
An efficient numerical method for solving this problem needs to have shock-capturing capability in the high Mach number Published on: 26 November In this paper, we introduce the discrete Maxwellian equilibrium distribution function for incompressible flow and force term into the two-stage third-order Discrete Unified Gas-Kinetic Scheme DUGKS for simul Accuracy of unstructured finite volume discretization is greatly influenced by the gradient reconstruction.
For the commonly used k-exact reconstruction method, the cell centroid is always chosen as the reference Published on: 17 November For internal flow with supersonic inflow boundary conditions, a complicated oblique shock reflection may occur. Different from the planar shock reflection problem, where the shape of the incident shock can be Published on: 31 October This paper presents a robust sharp-interface immersed boundary method for simulating inviscid compressible flows over stationary and moving bodies.
The flow field is governed by Euler equations, which are solv Published on: 20 October An amendment to this paper has been published and can be accessed via the original article. Authors: Joseph J. Shang and Hong Yan. Published on: 15 September The original article was published in Advances in Aerodynamics 2 The flow regime of micro flow varies from collisionless regime to hydrodynamic regime according to the Knudsen number Kn, which is defined as the ratio of the mean free path over the local characteristic lengt Published on: 3 September The high enthalpy nozzle converts the high enthalpy stagnation gas into the hypervelocity free flow.
The flow region of the high enthalpy nozzle consists of three parts: an equilibrium region upstream of the t Published on: 10 August Nearly all illuminating classic hypersonic flow theories address aerodynamic phenomena as a perfect gas in the high-speed range and at the upper limit of continuum gas domain.
The hypersonic flow is quantitati Published on: 7 August The Correction to this article has been published in Advances in Aerodynamics 2 Since the classical weighted essentially non-oscillatory WENO scheme is proposed, various improved versions have been developed, and a typical one is the WENO-Z scheme. Although better resolution is achieved Published on: 1 August In this paper, we present a hybrid grid generation approach for viscous flow simulations by marching a surface triangulation on viscous walls along certain directions.
Focuses are on the computing strategies u Published on: 30 July Noise prediction from streamlined bodies such as wind turbine blades can be predicted accurately using CFD computations that use spatio-temporal turbulence models at the expense of high computational power. Published on: 29 June Large Eddy Simulations are carried out to analyze flow past flat plate in different configurations and inclinations.
Published on: 19 June A truly three-dimensional 3D gas-kinetic flux solver for simulation of incompressible and compressible viscous flows is presented in this work. By local reconstruction of continuous Boltzmann equation, the i Authors: Y. Sun, L. Yang, C. Shu and C. Published on: 26 May The flow of an active thermal protection system exploiting subsonic counter-flow jets for wing leading edges of hypersonic vehicles is numerically studied on the basis of the three dimensional Navier-Stokes eq Authors: Tomonori Shimada and Taku Ohwada.
We investigate the gas flows near to solid surfaces in terms of the local spatial variation in the molecular mean free path MFP. Molecular dynamics MD is the appropriate scientific tool for obtaining molec Authors: Jianfei Xie.
Advanced sensing techniques are in big demand for applications in hypersonic wind tunnel harsh environments, such as aero thermo dynamics measurements, thermal protection of aircraft structures, air-breathing Published on: 24 April The unsteady transonic aerodynamics of a wing-body configuration is investigated by solving the Unsteady Reynolds-averaged Navier-Stokes equations closed with the full Reynolds Stress Model.
This work presents Published on: 23 April Blunt-body configurations are the most common geometries adopted for non-lifting re-entry vehicles. Hypersonic re-entry vehicles experience different flow regimes during flight due to drastic changes in atmosp Authors: T. Chourushi, A. Rahimi, S. Singh and R. Published on: 21 April The DSMC modeling is developed to simulate three-dimensional 3D rarefied ionization flows and numerically forecast the communication blackout around spacecraft during hypervelocity reentry.
A new weighting f Published on: 17 March Currently available procedures of electron temperature calculations in studying ionized flows around reentry spacecraft by the direct simulation Monte Carlo DSMC method are analyzed. It is shown that the hea Authors: Alexander Shevyrin and Yevgeniy Bondar. Published on: 4 March Recently, a novel concept of flapping Micro-Air-Vehicles FMAVs with four wings has been proposed, which potentially utilizes the clap-and-fling effect for lift enhancement and agile maneuvers through an adju Published on: 17 February Despite over fifty years of research on shock wave boundary layer effects and interactions, many related technical issues continue to be controversial and debated.
The present survey provides an overview of th Authors: P. Ligrani, E. Everyone working in and related to the field of aerodynamics, including professors, researchers, and graduate students in academia; scientists and researchers in governmental agencies; and technologists, engineers, specialists, and technology managers from various industries.
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Contribution may be by submission or invitation, and suggestions for special issues and publications are welcome. Editor in Chief Dr. About this journal Editorial board Submitting articles. Objectives IJAD aims to promote the advancement of science and technology of aerodynamics by disseminating original technical information of permanent interest in the field of aerodynamics.
Readership Everyone working in and related to the field of aerodynamics, including professors, researchers, and graduate students in academia; scientists and researchers in governmental agencies; and technologists, engineers, specialists, and technology managers from various industries. Contents IJAD mainly publishes original and peer reviewed technical papers of archival quality. Browse issues Vol. More on permissions. Editor in Chief Dorgham , M. A few essentials for publishing in this journal Submitted articles should not have been previously published or be currently under consideration for publication elsewhere.
A perfect research paper should present the historical background of the development of aerodynamics, explain the meaning of this term and describe its value for the human civilization. One should present the abilities of aerodynamics, its potential, strong and weak sides, possible existing problems and the methods to solve them. Moreover, a student is able to express his own opinion concerning the topic and present smart ideas useful for the further development of the discipline.
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Leave this field empty. Free Research Paper on Aerodynamics: Aerodynamics is the field of dynamics which studies the abilities and perspectives of the use of the energy of the wind. Free research paper samples and term paper examples available online are plagiarized. Editor in Chief Dr. About this journal Editorial board Submitting articles. Objectives IJAD aims to promote the advancement of science and technology of aerodynamics by disseminating original technical information of permanent interest in the field of aerodynamics.
Readership Everyone working in and related to the field of aerodynamics, including professors, researchers, and graduate students in academia; scientists and researchers in governmental agencies; and technologists, engineers, specialists, and technology managers from various industries.
Contents IJAD mainly publishes original and peer reviewed technical papers of archival quality. Browse issues Vol. More on permissions. Editor in Chief Dorgham , M. A few essentials for publishing in this journal Submitted articles should not have been previously published or be currently under consideration for publication elsewhere.
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