Results 241 to 250 of about 10,835 (274)

Laminar separation bubble in a spinning ball aerodynamics

Physics of Fluids
We explore the flow past a spinning smooth ball at Re=1×105 for the spin factor range 0≤α≤1 using large eddy simulation (LES). When a spinning ball passes through a uniform flow field, an asymmetrical boundary-layer separation occurs along the retreating and advancing sides of the ball.
Navaneeth Krishnan, Vagesh D. Narasimhamurthy, Mahesh V. Panchagnula   +2 more
openaire   +1 more source

The lateral force on a spinning sphere: Aerodynamics of a curveball

American Journal of Physics, 1987
The lateral force on a spinning baseball in a wind tunnel has been measured. The magnitude of the force is nearly independent of the orientation of the seams of the ball. The drag coefficient appears to be at most weakly dependent on Reynolds number and to be principally a function of the ratio of the rotational speed of the equator of the ball to the ...
Robert G. Watts, Ricardo Ferrer
openaire   +1 more source

A study of spin effects on tennis ball aerodynamics

Due to complex surface structure, the aerodynamic behaviour of a tennis ball is significantly different compared to other sports balls. This difference is more obvious when spin is involved. Although several studies have been conducted on drag and lift in steady state condition (no spin involved) by the authors and others, little or no studies have ...
Alam, Firoz, Subic, Aleksandar, Naser, Jamal, Rasul, M. G., Khan, M. M. K.   +4 more
openaire   +1 more source

Aerodynamic melt-spinning

Fibre Chemistry, 1978
A. V. Genis, D. V. Fil'bert, A. A. Sindeev   +2 more
openaire   +1 more source

Aerodynamics of a Spinning Cylinder in Rarefied Gas Flows

Journal of Spacecraft and Rockets, 1999
Fig. 3 Variation of wnorm with jointe exibility parameter A Fj for a)root impulse and b ) tip impulse. disturbance structurally more critical than a control impulse of the same magnitude. Conclusions The present study has investigated the problem of the elastic response ofa genericspacevehiclewithdegradedjoints.Thesteppedbeamformulation ...
openaire   +1 more source

Spinning symmetric missiles in a nonlinear aerodynamic field

1964
The case of a spinning symmetric body flying at a constant speed where the aerodynamic restoring moment is an arbitrary function of the angle of attack is examined. The analysis is twofold: first, the general problem is discussed, in suitable nondimensional form, to establish the generalized stability boundaries and, second, the attention is directed ...
openaire   +1 more source

Aerodynamic Coefficients of Stationary and Spinning Cricket Balls

2007
The flight of a cricket ball after leaving the hand of a bowler is, for given atmospheric conditions, principally governed by the speed of the ball, the angle of the seam to the direction of flight, any rotational spin applied to the ball, and the state of its outer surface with regard to the degree of wear and roughness.
Sayers, A.T., Lelimo, N.J.
openaire   +1 more source

Supersonic aerodynamics of spinning tubular bodies

Journal of Spacecraft and Rockets, 1986
E. POLITIS, R. KIND
openaire   +1 more source

Three dimensional numerical study of soccer ball aerodynamics at different spin conditions

AIP Conference Proceedings, 2021
Mohammad Mamun
exaly  

Floating offshore wind turbine aerodynamics: Trends and future challenges

Renewable and Sustainable Energy Reviews, 2021
Daniel Micallef, Abdolrahim Rezaeiha
exaly