West-east High Speed Flow Field Conference

نویسندگان

  • Hilde Ouvrard
  • Stephen Wornom
  • Bruno Koobus
  • Maria-Vittoria Salvetti
  • Simone Camarri
  • Alain Dervieux
چکیده

The behavior of a variational multiscale LES model is studied for flows past bluff bodies. The circular cylinder is studied for a Reynolds 3900. Subgrid scale eddy viscosities of Smagorinsky, Vreman and the WALE model are compared. The vortex induced motion of a spar equipped with strakes and flexible mooring is then computed. The interest of variational multi-scale as compared to usual Large Eddy Models is put in evidence.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

WEST-EAST HIGH SPEED FLOW FIELD CONFERENCE 19-22, November 2007 Moscow, Russia PARALLEL PROGRAM COMPLEX FOR UNSTEADY FLOW SIMULATION

A parallel program complex for 3D viscous gas flow simulation is presented. This complex is based on explicit finite difference schemes, which are constructed as an approximation of conservation laws (control volume method) and oriented on use of locally refined grids. Special algorithm and utility for nested grid partitioning was created. The principle of program construction permits to introd...

متن کامل

WEST-EAST HIGH SPEED FLOW FIELD CONFERENCE 19-22, November 2007 Moscow, Russia PREDICTION OF INCOMING TURBULENT NOISE USING A COMBINED NUMERICAL / SEMI-EMPIRICAL METHOD AND EXPERIMENTAL VALIDATION

The present paper investigates the case of an airfoil placed in a turbulent jet. The Reynolds number based on the chord length is equal to 36,000 and the Mach number to 0.04. The unsteady, threedimensional incompressible flow around the airfoil is first computed with the LES module of the commercial solver FLUENT. An innovative procedure is then proposed to compute from the CFD computation, the...

متن کامل

3-D Numerical Investigation of Flow Field in Starting Stage of High Speed Wind Tunnels

High speed wind tunnels are widely used in the study of fluid flow behavior around various objects. The air flow in the starting step of supersonic wind tunnels is transient including strong shock waves caused by the interaction of the tunnel main stream and the boundary layer at walls. To arrive in running step, the tunnel must be designed so as these waves leave immediately the test section. ...

متن کامل

3-D Numerical Investigation of Flow Field in Starting Stage of High Speed Wind Tunnels

High speed wind tunnels are widely used in the study of fluid flow behavior around various objects. The air flow in the starting step of supersonic wind tunnels is transient including strong shock waves caused by the interaction of the tunnel main stream and the boundary layer at walls. To arrive in running step, the tunnel must be designed so as these waves leave immediately the test section. ...

متن کامل

PFISR observations of strong azimuthal flow bursts in the ionosphere and their relation to nightside aurora

Some PBIs extend equatorward from the polar cap boundary, where they can be roughly divided into north–south-aligned and east–west-aligned structures. In this paper, we present two flow burst events observed by the new Poker Flat Advanced Modular Incoherent Scatter Radar (PFISR) in the pre-midnight auroral zone on 28 April 2007, one towards the west and the other towards the east. In both cases...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2007