... shedding. Aerodynamics Compressible flows Drag Free shear layers Gas dynamics Supersonic flows Transonic flows Unsteady flows Wakes The authors would like to express their sincere gratitude to A. Narayanaswami, V. Biju, and A. Narayana for their unstinted support during the model...

... ]. To make sure that this time-step was small enough and the computed aerodynamic coefficients for the uncontrolled case were not dependent on the choice of time-step size, we also considered Δ t = t * / 460 , but there were no meaningful differences between the two results...

... approaches on the flow field around trains, which affects the surface pressure and consequently the aerodynamic forces of the train, was not properly investigated in terms of their influence flow field. The SST and improved delayed detached eddy simulation (IDDES) turbulence models have been tested...

...O. H. Ehirim; K. Knowles; A. J. Saddington The ground-effect diffuser has become a major aerodynamic device on open-wheel racing and sports cars. Accordingly, it is widely considered to be indispensable to their aerodynamic performance, largely due to its significant downforce contribution. However...

... by the Fluids Engineering Division of ASME for publication in the J OURNAL OF F LUIDS E NGINEERING . Manuscript received August 30, 2017; final manuscript received May 17, 2018; published online June 29, 2018. Assoc. Editor: Satoshi Watanabe. 30 08 2017 17 05 2018 Aerodynamics Pumps...

... References [1] Leger Monteiro , J. A. , Páscoa , J. C. , and Xisto , C. M. , 2016 , “ Aerodynamic Optimization of Cyclorotors ,” Aircr. Eng. Aerosp. Technol. , 88 ( 2 ), pp. 232 – 245 . 10.1108/AEAT-02-2015-0051 [2] Gagnon , L. , Morandini , M. , Quaranta , G...

... and variation in aerodynamic forces. The simulations are carried out for various nondimensional rotation rates, axis ratio (AR) of the cylinder, and shear parameter. In shear flow past rotating elliptic cylinder, the negative vortices are sustained for longer distances in the downstream of the cylinder, and due...

... . Manuscript received August 18, 2017; final manuscript received May 2, 2018; published online June 13, 2018. Assoc. Editor: Jun Chen. 18 08 2017 02 05 2018 Aerodynamics Computational fluid dynamics Drag Turbulence Turbulence modeling Wakes Partially‐averaged Navier–Stokes...

... Aerodynamics Computational fluid dynamics Experimental techniques Stability Turbulence modeling Transition Low aspect ratios (AR) wing flows are quite important in terms of aerodynamics of micro-air vehicles (MAV). Laminar separated-induced transition takes place since viscous forces are dominant...

... OURNAL OF F LUIDS E NGINEERING . Manuscript received October 24, 2017; final manuscript received April 18, 2018; published online June 4, 2018. Assoc. Editor: Ning Zhang. 24 10 2017 18 04 2018 Aerodynamics Complex flows Computational fluid dynamics Vortices The flow...

... was selected since the chord at that location is very close to the mean aerodynamic chord of the wing. The airfoil has a chord length of 173 in. The VCCTEF overall flap chord is 54 in measured from the first hinge line. The flow solver, OVERFLOW [ 17 – 19 ], is used to conduct this study. The results identify...

...O. H. Ehirim; K. Knowles; A. J. Saddington; M. V. Finnis A ground-effect diffuser is an upward-sloping section of the underbody of a racing car that enhances aerodynamic performance by increasing the downforce, thus improving tire grip. The downforce generated by a diffuser can be increased...

... z = horizontal-radial direction 1 = inlet parameter 2 = outlet parameter Superscript * = total parameter References [1] Seddon , J. , and Goldsmith , E. L. , 1999 , Intake Aerodynamics (AIAA education series), 2nd ed. , E. L. Goldsmith , ed...

...T. Lee; L. S. Ko The ground effect on the aerodynamic loading and leading-edge vortex (LEV) flow generated by a slender delta wing was investigated experimentally. Both the lift and drag forces were found to increase with reducing ground distance (up to 50% of the wing chord). The lift increment...

... and RMS pressure reduction of 74% could be achieved during the present investigation with CIW0.5-45. The studies carried out would be beneficial in understanding further to reduce the other mode tonal peaks. Aerodynamics Cavity flows Compressible flows Supersonic flows Unsteady flows...

... for the symmetric NACA 0012 airfoil and these are used to validate the LESs. Good agreement between computed and experimentally observed coefficients is found confirming the accuracy of the method. The influence of foil asymmetry on the aerodynamic coefficients is analyzed by subjecting a NACA 4412 airfoil...

...T. Lee; V. Tremblay-Dionne The aerodynamic properties and flowfield of a NACA 0015 airfoil over a wavy ground were investigated experimentally via surface pressure and particle image velocimetry (PIV) measurements. Flat-surface results were also obtained to be served as a comparison. For the wavy...

... number t c = convective time scale U e = edge velocity U ∞ = freestream velocity α i = spatial growth rate γ = resolved-to-total turbulent kinetic energy References [1] Lei , J. , and He , J. , 2015 , “ Adjoint-Based Aerodynamic Shape...

... Model for Aerodynamic Flows ,” AIAA Paper No. 1992-439. 10.2514/6.1992-439 [2] Deck , S. , Duveau , P. , d'Espiney , P. , and Guillen , P. , 2002 , “ Development and Application of Spalart–Allmaras One Equation Turbulence Model to Three-Dimensional Supersonic Complex...

... turbine is adopted to validate the developed method. By the method, the process of grid generation becomes very simple and the unsteady data transferring between stator and rotor is realized without the process of being averaged or weighted. Based on the analysis of some important aerodynamic parameters...