«vortex blob method»
۴۷ نتیجهEnhanced inverse-cascade of energy in the averaged Euler equations
For a particular choice of the smoothing kernel, it is shown that the system of partial differential equations governing the vortex-blob method corresponds to the averaged Euler equations. These latter equations have recently been derived by averaging the Euler equations over Lag
Rotorcraft Wake Modeling: Past, Present and Future
Rotorcraft wake modeling is still a major concern in rotorcraft design and analysis as it influences the aerodynamic, aeroacoustic, and aeroelastic behavior of the vehicle. This paper presents a comprehensive overview of rotorcraft wake modeling, in particular in the last decade,
JoT 3 ( 2002 ) 046
In vortex particle methods one is concerned with the problem of clustering and depletion of particles in different regions of the flow. The overlap of the vortex blobs is indeed of primary importance for the convergence of the method. In this paper we consider face-centred cubic
DNS Study of Turbulence Structure in a Boundary Layer
This DNS study is focused on the structure of turbulence in a boundary layer. First, it is not appropriate to call the turbulent flow as a “random” motion. Any mean flow like Blasius solution, which is a Navier-Stokes solution, added by white noise or random perturbation would be
Simulation of Bubble and Particle Interactions with Vortical Flows Using a Discrete Element Model
Discrete Element Model (DEM) is used to simulate bubble and particle interactions with vortical flows. In this Euler-Lagrange approach, volume-averaged Navier-Stokes equations are solved using a co-located grid finite volume method. The dispersed phase is assumed spherical and is
Unsteady flow through in-vitro models of the glottis.
The unsteady two-dimensional flow through fixed rigid in vitro models of the glottis is studied in some detail to validate a more accurate model based on the prediction of boundary-layer separation. The study is restricted to the flow phenomena occurring within the glottis and do
Introduction to the QJ@150 Anniversary Collection
2023 is a momentous year for the Quarterly Journal of Royal Meteorological Society (QJ), celebrating its 150th anniversary. The QJ was initiated in 1873 at time when meteorological science growing rapidly scope and importance one first atmospheric journals to be established. had