Understanding the vertical structure of potential vorticity in tropical depressions
Sign Up to like & getrecommendations! Published in 2019 at "Quarterly Journal of the Royal Meteorological Society"
DOI: 10.1002/qj.3539
Abstract: Author(s): Murthy, VS; Boos, WR | Abstract: © 2019 Royal Meteorological Society Potential vorticity (PV) has been used to understand the intensification and motion of a variety of tropical vortices. Here, atmospheric reanalyses and idealized… read more here.
Keywords: vertical structures; vorticity; stratiform deep; tropical depressions ... See more keywords
Preferred equilibrium solutions of the barotropic vorticity equation
Sign Up to like & getrecommendations! Published in 2020 at "Theoretical and Applied Climatology"
DOI: 10.1007/s00704-020-03232-1
Abstract: The long-term behaviour of the barotropic vorticity equation (BVE), which is beneficial for understanding long-term climate variations, has been investigated by applying an explicit quadratic conserved finite difference integration scheme. The results suggest that an… read more here.
Keywords: long term; vorticity equation; barotropic vorticity; vorticity ... See more keywords
On Vortex Alignment and the Boundedness of the Lq-Norm of Vorticity in Incompressible Viscous Fluids
Sign Up to like & getrecommendations! Published in 2020 at "Acta Mathematica Scientia"
DOI: 10.1007/s10473-020-0606-7
Abstract: We show that the spatial Lq-norm (q > 5/3) of the vorticity of an incompressible viscous fluid in ℝ3 remains bounded uniformly in time, provided that the direction of vorticity is Holder continuous in space,… read more here.
Keywords: vorticity incompressible; vorticity; norm vorticity; incompressible viscous ... See more keywords
Interplay of surface geometry and vorticity dynamics in incompressible flows on curved surfaces
Sign Up to like & getrecommendations! Published in 2017 at "Applied Mathematics and Mechanics"
DOI: 10.1007/s10483-017-2238-8
Abstract: Incompressible viscous flows on curved surfaces are considered with respect to the interplay of surface geometry, curvature, and vorticity dynamics. Free flows and cylindrical wakes over a Gaussian bump are numerically solved using a surface… read more here.
Keywords: vorticity; surface; flows curved; geometry ... See more keywords
Statistics of Scalar Dissipation and Strain/Vorticity/Scalar Gradient Alignment in Turbulent Nonpremixed Jet Flames
Sign Up to like & getrecommendations! Published in 2019 at "Flow, Turbulence and Combustion"
DOI: 10.1007/s10494-019-00044-w
Abstract: Turbulence and mixing statistics are investigated in a set of flames at a jet Reynolds number of 15000 achieving a Taylor’s scale Reynolds number in the range 100 ≤Reλ ≤ 150. In particular, the impact on… read more here.
Keywords: vorticity; scalar dissipation; jet; turbulence ... See more keywords
Characteristics of breaking vorticity in spilling and plunging waves investigated numerically by SPH
Sign Up to like & getrecommendations! Published in 2019 at "Environmental Fluid Mechanics"
DOI: 10.1007/s10652-019-09699-5
Abstract: The present paper, places emphasis on the vorticity induced by wave breaking, which greatly contributes to sediments pick up and suspension as well as to air–water exchange at the wave interface, thus deserving a thorough… read more here.
Keywords: plunging waves; vorticity; spilling plunging; vorticity spilling ... See more keywords
A Comparative Study on the Effect of Upstream Trough on Intensity Changes of Two Types of Tropical Cyclones during Extratropical Transition
Sign Up to like & getrecommendations! Published in 2019 at "Asia-Pacific Journal of Atmospheric Sciences"
DOI: 10.1007/s13143-019-00136-7
Abstract: Based on the China Meteorological Administration (CMA) tropical cyclone (TC) database and the reanalysis data from the European Centre for Medium-Range Weather Forecasts (ECMWF), the post-transition intensifying tropical cyclones (ITC) and weakening tropical cyclones (WTC)… read more here.
Keywords: extratropical transition; vorticity; upper level; tropical cyclones ... See more keywords
Impact of Background Dynamic and Thermodynamic States on Distinctive Annual Cycle of Near-Equatorial Tropical Cyclogenesis over the Western North Pacific
Sign Up to like & getrecommendations! Published in 2020 at "Journal of Meteorological Research"
DOI: 10.1007/s13351-020-0007-9
Abstract: In a sharp contrast to tropical cyclone (TC) genesis over the main development region of the western North Pacific (WNP), near-equatorial (0°–5°N) TCs exhibit a distinctive annual cycle, peaking in boreal winter and being inactive… read more here.
Keywords: annual cycle; vorticity; western north; distinctive annual ... See more keywords
Unsteady flow structure and its evolution in a low specific speed centrifugal pump measured by PIV
Sign Up to like & getrecommendations! Published in 2018 at "Experimental Thermal and Fluid Science"
DOI: 10.1016/j.expthermflusci.2018.04.013
Abstract: Abstract The intense fluid-dynamic interaction associated with the complex flow structure in the centrifugal pump is detrimental to the stable operation of the pump. Based on the particle image velocimetry (PIV) measuring technique, flow structures… read more here.
Keywords: centrifugal pump; vorticity; flow rates; flow structure ... See more keywords
Dipole model of vorticity at the moving contact line
Sign Up to like & getrecommendations! Published in 2018 at "International Journal of Multiphase Flow"
DOI: 10.1016/j.ijmultiphaseflow.2018.02.008
Abstract: Vorticity, defined as the curl of velocity ( ω ≡∇ × u ), has beome a topic of significant interest over the past century. As a easure of local fluid rotation, vorticity has proven to… read more here.
Keywords: contact line; vorticity; vorticity moving; moving contact ... See more keywords
Stream function - vorticity formulation of mixture mass flow
Sign Up to like & getrecommendations! Published in 2020 at "International Journal of Non-linear Mechanics"
DOI: 10.1016/j.ijnonlinmec.2019.103317
Abstract: Abstract Employing a generalized quasi two-phase bulk mixture mass flow model derived from a general two-phase model (Pudasaini, 2012), here, we formulate a stream function - vorticity and vorticity-transport equation for a rapid flow of… read more here.
Keywords: stream function; vorticity; flow; mixture ... See more keywords