Results 91 to 100 of about 117,422 (348)
A Two-Time-Scale Turbulence Model and Its Application in Free Shear Flows
Applied SciencesA novel three-equation turbulence model has been proposed as a potential solution to overcome some of the issues related to the k–ε models of turbulence.
Mehmet Zafer Gul +2 more
doaj +1 more source
Rossby-wave turbulence in a rapidly rotating sphere [PDF]
Nonlinear Processes in Geophysics, 2005 We use a quasi-geostrophic numerical model to study the turbulence of rotating flows in a sphere, with realistic Ekman friction and bulk viscous dissipation.
N. Schaeffer, P. Cardin
doaj
Freely-Decaying, Homogeneous Turbulence Generated by Multi-scale Grids
, 2011 We investigate wind tunnel turbulence generated by both conventional and multi-scale grids. Measurements were made in a tunnel which has a large test-section, so that possible side wall effects are very small and the length assures that the turbulence ...
Davidson +5 more
core +1 more source
Transition models for turbomachinery boundary layer flows : a review [PDF]
, 2017 Current models for transition in turbomachinery boundary layer flows are reviewed. The basic physical mechanisms of transition processes and the way these processes are expressed by model ingredients are discussed.
Dick, Erik, Kubacki, Slawomir
core +2 more sources
Characterizing Elastic Turbulence in Channel Flows at Low Reynolds number [PDF]
, 2016 We experimentally investigate the flow of a viscoelastic fluid in a parallel shear geometry at low Reynolds number. As the flow becomes unstable via a nonlinear subcritical instability, velocimetry measurements show non-periodic fluctuations over a broad
Boyang Qin, P. Arratia
semanticscholar +1 more source
Asia-Pacific Journal of Chemical Engineering, EarlyView.ABSTRACT Proton exchange membrane fuel cells (PEMFC) are regarded as the best clean energy conversion technology because of their smaller number of emissions and higher efficiency. This numerical investigation used two different flow channel designs—the serpentine flow field (SFF) and the lung serpentine flow field (LSFF)—with active areas of 5 by 5 cm.
Muralikrishna Boni +3 more
wiley +1 more source
Relations between two-point correlations and pressure strain terms [PDF]
The structure of the two-point spatial correlations (velocity-velocity, velocity-scalar, and scalar-scalar) were studied with a view to improve turbulence closure models.
Lele, Sanjiva K., Wolfshtein, Micha
core +1 more source
Experimental Investigation of Microbubble Evolution in the Liquivac Multiphase Flow Pump
Asia-Pacific Journal of Chemical Engineering, EarlyView.ABSTRACT This paper aims to experimentally investigate the mechanisms of microbubble characteristics evolution within an axial pump. The findings will aid in assessing the pump performance by identifying the range of bubble sizes and comparing them with the threshold size (< 300 μm). This study also provides evidence supporting the use of such pumps as
Hamad FA +4 more
wiley +1 more source
Influence of bulk turbulence and entrance boundary layer thickness on the curved duct flow field [PDF]
The objective of this investigation was the experimental evaluation of bulk turbulence and boundary thickness influence on the secondary flow development in a square, 90 deg turning duct.
Crawford, Roger A., Peters, Carroll E.
core +1 more source
Generation and Structure of Solitary Rossby Vortices in Rotating Fluids
, 1996 The formation of zonal flows and vortices in the generalized Charney-Hasegawa-Mima equation is studied. We focus on the regime when the size of structures is comparable to or larger than the deformation (Rossby) radius.
A. Chekhlov +18 more
core +1 more source