...-Uniform Rational B-splines) basis functions which have been proven to be highly accurate in LES of turbulent flows (Bazilevs, Y., et al. 2007, Comput. Methods Appl. Mech. Eng., 197 , pp. 173–201). LC consists of stream-wise vortices in the direction of the wind acting as a secondary flow structure...

... rate (Ω * =Ω.D/U ∞ ) t time T time for a complete roll projectile rotation Q Q-criterion, Q 0.5(W: W – S: S), W= vorticity tensor S rate of strain tensor TN wind tunnel tests, natural laminar-turbulent transition on the model TD wind tunnel tests, forced laminar...

... and LS) show a complete elimination of the separation region. It is also interesting to note the SS case provides the fastest recovery of the Preston pressure. This indicates that the trailing vortices produced by SS must have stayed close to the surface and therefore producing a fuller total pressure...

... ( 1986, “Numerical Simulation of a Laminar End-Wall Vortex and Boundary Layer,” Phys. Fluids, 29(12), pp. 3993–4005 ). 25 09 2007 14 08 2008 11 03 2009 computational fluid dynamics flow simulation jets vortices tornadolike vortex analytical model Analytical models...

...Fernando L. Ponta In this work, a novel procedure to solve the Navier-Stokes equations in the vorticity-velocity formulation is presented. The vorticity transport equation is solved as an ordinary differential equation (ODE) problem on each node of the spatial discretization. Evaluation...

... spreading velocity and strong vortex shedding from the front of the current. Our numerical results show that this spreading velocity is influenced by Gr as well as the geometrical configuration. The slumping phase is followed by a decelerating phase in which the vortices move into the body of the current...

...Promode R. Bandyopadhyay The mechanism of drag reduction due to spanwise wall oscillation in a turbulent boundary layer is considered. Published measurements and simulation data are analyzed in light of Stokes’ second problem. A kinematic vorticity reorientation hypothesis of drag reduction...

... demonstrate that the qualitative behavior of vorticies which form under the source depend on the geometry of the flow. For source diameters that are small compared to the size of the domain, the vortices propagate away from the source. On the other hand, if the ratio of source diameter to domain size...

... of the stream function and vorticity method and the finite-volume technique. An enlarged computational domain is employed to take into account the flow and thermal diffusion effects. Results are presented in terms of velocity and temperature profiles. The investigation also focuses on the flow and thermal...

...M. Hafez; J. Housman For two-dimensional flows, the conservation of mass and the definition of vorticity comprise a generalized Cauchy-Riemann system for the velocity components assuming the vorticity is given. If the flow is compressible, the density is a function of the speed and the entropy...