Results 11 to 20 of about 402,414 (297)

Wake structure and kinematics in the vortex ring state [PDF]

open access: yes, 2009
High-resolution computational simulations of the vortical wake of a rotor operating both near to and within the vortex ring state have been conducted using Brown's vorticity transport model.
Brown, R.E.   +3 more
core   +4 more sources

Study of Vortex Breakdown and Pitch up on a Compound Delta Wing [PDF]

open access: yesINCAS Bulletin, 2019
This paper discusses the calculation of mean pressure on a compound delta wing configuration and its variance to understand vortex breakdown and pitch up on the setup. The configuration of the compound delta wing being used was 50°-60°. The data was used
SHIVAM, Shashi Bhushan VERMA
doaj   +1 more source

Investigation of flow characteristics and vortex formations of lambda wing at high angles of attack

open access: yesJournal of Thermal Engineering, 2020
It is well known in literature that further stages of flow separation and vortex breakdown around wings can be able to cause stall of wings. These formations must be investigated carefully for new plane types. However, some limited studies are available,
M.murat YAVUZ
doaj   +1 more source

Engineering Application of an Identification Method to Shock-Induced Vortex Stability in the Transonic Axial Fan Rotor

open access: yesInternational Journal of Aerospace Engineering, 2021
In the present paper, the steady RANS (Reynolds-Averaged Navier-Stokes) simulations based on our independently developed CFD (Computational Fluid Dynamics) solver NUAA-Turbo 2.0, are carried out to investigate the shock wave/tip leakage vortex (SW/TLV ...
Yan Xue, Ning Ge
doaj   +1 more source

Study of jet precession, recirculation and vortex breakdown in turbulent swirling jets using LES. [PDF]

open access: yes, 2009
Large eddy simulations (LES) are used to investigate turbulent isothermal swirling flows with a strong emphasis on vortex breakdown, recirculation and instability behaviour.
Ranga Dinesh, K.K.J.   +3 more
core   +1 more source

Periodic vortex breakdown in wide spherical gaps [PDF]

open access: yes, 1997
The flow field with vortex breakdown in wide spherical gaps was studied numerically by a finite difference method under the axisymmetric condition. The result shows that the flow bifurcates to periodic motion as the Reynolds number or the eccentricity of
马延文   +6 more
core   +1 more source

THE INFLUENCE OF FEATURES OF VORTEX FLOW ON AERODYNAMIC CHARACTERISTICS OF THE SUPERSONIC MANEUVERABLE AIRCRAFT MODEL

open access: yesНаучный вестник МГТУ ГА, 2019
The paper presents the influence of the vortex flow features, in particular, the phenomenon of vortex burst on the longitudinal and lateral aerodynamic characteristics of the maneuverable aircraft model with a sharp-edged fore-body.
K. A. Osipov
doaj   +1 more source

Vortex Breakdown in a Closed Cylindrical Container with a Rotating or Stationary Conical Endwall

open access: yesJournal of Fluid Science and Technology, 2010
A visualization study is made of flow of a constant-density viscous fluid in a closed cylindrical container. Fluid motions are generated by the rotation of one of its endwalls.
Kazuyuki FUJIMURA   +3 more
doaj   +1 more source

Anisotropic Characteristics of Turbulence Dissipation in Swirling Flow: A Direct Numerical Simulation Study

open access: yesAdvances in Mathematical Physics, 2015
This study investigates the anisotropic characteristics of turbulent energy dissipation rate in a rotating jet flow via direct numerical simulation. The turbulent energy dissipation tensor, including its eigenvalues in the swirling flows with different ...
Xingtuan Yang   +5 more
doaj   +1 more source

Very-Large-Eddy Simulation of Nonreactive Turbulent Flow for Annular Trapped Vortex Combustor [PDF]

open access: yesJournal of Applied Fluid Mechanics, 2022
A hybrid Reynolds-averaged Navier-Stokes (RANS) large eddy simulation (LES) method is applied in this work. It called very-large-eddy simulation (VLES) turbulence closure model.
K. Zhang, Y. Jin, X. Han, X. He
doaj   +1 more source

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