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Keywords: aerodynamics
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Journal Articles
Article Type: Research Papers
J. Appl. Mech. September 2022, 89(9): 091003.
Paper No: JAM-21-1497
Published Online: July 19, 2022
... and modeling of autorotation, beyond what is reported in the literature. We adopt a model-based approach where the blade element momentum (BEM) method and catenary mechanics are used to model the aerodynamics and the tether, respectively. The resulting model is highly nonlinear and numerical methods...
Journal Articles
Article Type: Research Papers
J. Appl. Mech. October 2021, 88(10): 101002.
Paper No: JAM-21-1035
Published Online: June 4, 2021
.... Ind. Aerodyn. , 12 ( 1 ), pp. 49 – 73 . 10.1016/0167-6105(83)90080-6 [6] Chen , X. Z. , 2014 , “ Analysis of Crosswind Fatigue of Wind-Excited Structures With Nonlinear Aerodynamics Damping ,” Eng. Struct. , 74 , pp. 145 – 156 . 10.1016/j.engstruct.2014.04.049 [7] Boggs...
Journal Articles
Article Type: Research Papers
J. Appl. Mech. October 2021, 88(10): 101001.
Paper No: JAM-21-1088
Published Online: May 24, 2021
... under smooth flow conditions, similar to the wind tunnel tests. As a computational validation, this analysis domain and grid size were applied to the flow field analysis around a 150 mm × 150 mm square plate with a depth of 7.5 mm (Re = 5.0 × 10 4 ). The aerodynamic force coefficients could...
Journal Articles
Article Type: Research Papers
J. Appl. Mech. January 2020, 87(1): 011004.
Paper No: JAM-19-1301
Published Online: October 14, 2019
... to Kovasznay flow has been developed. Email: ndyck@uwo.ca Email: astraatman@eng.uwo.ca aerodynamics internal flow Wang [ 19 ] presented another solution technique, wherein the third component of vorticity is expressed as a function of the streamfunction plus an auxiliary function...
Journal Articles
Article Type: Exterior Ballistics
J. Appl. Mech. May 2013, 80(3): 031601.
Paper No: JAM-12-1271
Published Online: April 19, 2013
... January 9, 2013; published online April 19, 2013. Assoc. Editor: Bo S. G. Janzon. 28 06 2012 12 09 2012 09 01 2013 The supersonic aerodynamics of a high spin armor-piercing fin-stabilized discarding sabot projectile (APFSDS) is numerically and experimentally investigated...
Journal Articles
Article Type: Special Section: Computational Fluid Mechanics And Fluid–Structure Interaction
J. Appl. Mech. January 2012, 79(1): 010903.
Published Online: December 13, 2011
... the volume-mesh motion. We apply these techniques to computation of the aerodynamics of flapping wings, specifically locust wings, where the prescribed motion and deformation of the wings are based on digital data extracted from the videos of the locust in a wind tunnel. We report results from...
Journal Articles
Article Type: Special Section: Computational Fluid Mechanics And Fluid–Structure Interaction
J. Appl. Mech. January 2012, 79(1): 010910.
Published Online: December 13, 2011
.... -C. , Akkerman , I. , Wright , S. , Takizawa , K. , Henicke , B. , Spielman , T. , and Tezduyar , T. E. , 2011 , “3D Simulation of Wind Turbine Rotors at Full Scale. Part I: Geometry Modeling and Aerodynamics,” Int. J. Numer. Methods Fluids , 65 , pp. 207 – 235...
Journal Articles
Article Type: Guest Editorial
J. Appl. Mech. January 2012, 79(1): 010301.
Published Online: November 3, 2011
... methods in the context of particulate flows. The special issue contains papers on advances in patient-specific cardiovascular hemodynamics, FSI modeling of parachutes, air turbine aerodynamics, aerodynamics of flapping wings, ship hydrodynamics, liquid sloshing in tanks, and turbulence in the upper...
Journal Articles
Article Type: Research Papers
J. Appl. Mech. November 2011, 78(6): 061006.
Published Online: August 24, 2011
... are investigated by an adapted numerical simulation approach using the Euler equations for two immiscible gases. The method involves moving bodies with respect to fixed Cartesian meshes and the aerodynamic forces are used to compute the trajectories. In this paper, theoretical developments and computations have...
Journal Articles
Article Type: Research Papers
J. Appl. Mech. September 2011, 78(5): 051005.
Published Online: July 27, 2011
... aerodynamics boundary layer turbulence computational fluid dynamics flow instability Mach number missiles Navier-Stokes equations projectiles subsonic flow supersonic flow transonic flow vortices wakes wind tunnels aerodynamics magnus effect computational fluid dynamics Reynolds-averaged...
Journal Articles
Article Type: Research Papers
J. Appl. Mech. July 2011, 78(4): 041018.
Published Online: April 15, 2011
... be increased significantly. The relatively less well known aerodynamic properties of leading-edge flaps will be studied in detail prior to their utilization in aeroelastic stability and control system design studies. The optimal approximation of the classical Theodorsen circulation function will be studied...
Journal Articles
Article Type: Research Papers
J. Appl. Mech. May 2011, 78(3): 031004.
Published Online: February 7, 2011
...Shuhaimi Mansor; Martin Passmore This paper describes a technique for determining the dynamic aerodynamic yaw moment derivative based on the time response data using an oscillating model rig. The aerodynamic yaw moment derivatives are initially estimated using oscillation frequency and amplitude...
Journal Articles
Article Type: Research Papers
J. Appl. Mech. September 2010, 77(5): 051406.
Published Online: June 10, 2010
... of the numerical simulation and analysis are helpful to understand and master the aerodynamic process of gun system launching and provide significant guidance for research into shot accuracy and muzzle brake design. 06 01 2010 16 03 2010 08 04 2010 10 06 2010 10 06 2010...
Journal Articles
Article Type: Research Papers
J. Appl. Mech. September 2010, 77(5): 051502.
Published Online: May 21, 2010
... this special aerodynamic characteristic with a theoretical method. According to the transonic small perturbation potential theory, as well as the transonic small perturbation potential equation, this paper found the expressions of the wrap-around fin convexity and the concave pressure coefficient at subsonic...
Journal Articles
Article Type: Research Papers
J. Appl. Mech. March 2010, 77(2): 021020.
Published Online: December 21, 2009
... with big space coherence. In the opposite, the results obtained with the fine pore plate show a flow close to a fully developed turbulent channel flow. The comparison of the aerodynamic field with computational simulations based on a Reynolds-averaged Navier-Stokes (RANS) model underlines the difficulties...
Journal Articles
Article Type: Technical Briefs
J. Appl. Mech. March 2010, 77(2): 024504.
Published Online: December 14, 2009
... 12 2009 aerodynamics boundary layers numerical analysis optimisation plates (structures) There are many examples of fluid flows in technology and engineering where imposed boundary conditions results in flow separation. Nonlinear phenomena are of fundamental importance in various...
Journal Articles
Article Type: Research Papers
J. Appl. Mech. March 2010, 77(2): 021001.
Published Online: December 8, 2009
... an assumed mode discretization of an axially moving, uniaxially tensioned Kirchhoff plate coupled with cross and machine direction flows of a surrounding incompressible fluid. The corresponding aerodynamic potentials are computed using finite element solutions of certain mixed boundary value problems...
Journal Articles
Article Type: Advances In Impact Engineering
J. Appl. Mech. September 2009, 76(5): 051307.
Published Online: June 15, 2009
... 2008 27 01 2009 15 06 2009 aerodynamics detonation waves momentum plates (structures) shock waves Numerical analysis codes such as LS-DYNA , DYSMAS , and ABAQUS have been used for some time to model specific fluid-structure interactions (FSI) involving structures...
Topics: Momentum, Waves
Journal Articles
Article Type: Research Papers
J. Appl. Mech. May 2009, 76(3): 031012.
Published Online: March 11, 2009
...Craig A. Steeves; Katherine H. Timpano; Peter T. Maxwell; Luigi Martinelli; Richard B. Miles Aerospace vehicles with fixed geometry are designed to operate at a predetermined flight condition. Variation of the aerodynamic environment, such as during acceleration, climbing, or turning, from...
Journal Articles
Article Type: Technical Papers
J. Appl. Mech. November 2007, 74(6): 1104–1113.
Published Online: January 4, 2007
... validation in the planar case. The methodologies that have been developed lend themselves to easy expansion into three dimensions, and into torsion and lead/lag modeling. The amount of blade motion induced by ship motion on nonrotating helicopter blades is included. Although aerodynamic loads are a major...