Effects of Parameterized Orographic Drag on Weather Forecasting and Simulated Climatology Over East Asia During Boreal Summer
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Geophysical Research"
DOI: 10.1002/2017jd026696
Abstract: The Impact of subgrid orographic drag on weather forecasting and simulated climatology over East Asia in boreal summer is examined using two parameterization schemes in a global forecast model. The schemes consider gravity wave drag… read more here.
Keywords: simulated climatology; level; climatology; drag ... See more keywords
Reducing the pressure drag of a D-shaped bluff body using linear feedback control
Sign Up to like & getrecommendations! Published in 2017 at "Theoretical and Computational Fluid Dynamics"
DOI: 10.1007/s00162-017-0420-6
Abstract: The pressure drag of blunt bluff bodies is highly relevant in many practical applications, including to the aerodynamic drag of road vehicles. This paper presents theory revealing that a mean drag reduction can be achieved… read more here.
Keywords: bluff; control; drag; pressure drag ... See more keywords
Rate-dependent drag instability in granular materials
Sign Up to like & getrecommendations! Published in 2020 at "Granular Matter"
DOI: 10.1007/s10035-020-01039-5
Abstract: We investigate the conditions leading to large drag force fluctuations in granular materials. The study is based on a set of experimental drag tests, which involve pulling a plate vertically through a cohesionless granular material.… read more here.
Keywords: granular materials; dependent drag; rate dependent; drag ... See more keywords
Turbulent Drag Reduction by Uniform Blowing Over a Two-dimensional Roughness
Sign Up to like & getrecommendations! Published in 2017 at "Flow, Turbulence and Combustion"
DOI: 10.1007/s10494-017-9858-2
Abstract: Direct numerical simulation (DNS) of turbulent channel flow over a two-dimensional irregular rough wall with uniform blowing (UB) was performed. The main objective is to investigate the drag reduction effectiveness of UB on a rough-wall… read more here.
Keywords: rough wall; two dimensional; wall; drag ... See more keywords
Effect of boattail angle on near-wake flow and drag of axisymmetric models: a numerical approach
Sign Up to like & getrecommendations! Published in 2021 at "Journal of Mechanical Science and Technology"
DOI: 10.1007/s12206-021-0115-1
Abstract: Flow behavior around axisymmetric boattail surface was studied by numerical methods. A wide range of boattail angles from 0° to 24° was investigated to find the drag trend of the model. Numerical simulation was validated… read more here.
Keywords: angle; drag showed; boattail; effect ... See more keywords
Full configuration drag estimation of short-to-medium range fixed-wing UAVs and its impact on initial sizing optimization
Sign Up to like & getrecommendations! Published in 2021 at "CEAS Aeronautical Journal"
DOI: 10.1007/s13272-021-00522-w
Abstract: The paper presents the derivation of a new equivalent skin friction coefficient for estimating the parasitic drag of short-to-medium range fixed-wing unmanned aircraft. The new coefficient is derived from an aerodynamic analysis of ten different… read more here.
Keywords: short medium; medium range; aircraft; unmanned aircraft ... See more keywords
Tension and drag forces of flexible risers undergoing vortex-induced vibration
Sign Up to like & getrecommendations! Published in 2017 at "China Ocean Engineering"
DOI: 10.1007/s13344-017-0001-x
Abstract: This paper presents the results of an experimental investigation on the variation in the tension and the distribution of drag force coefficients along flexible risers under vortex-induced vibration (VIV) in a uniform flow for Reynolds… read more here.
Keywords: flexible risers; risers undergoing; vortex induced; viv ... See more keywords
A novel strategy to analyse the form drag on pressure ridges and the air–ice drag coefficient in the north-western Weddell Sea
Sign Up to like & getrecommendations! Published in 2017 at "Applied Mathematical Modelling"
DOI: 10.1016/j.apm.2017.09.046
Abstract: Abstract As the most important quantities needed in numerical modelling of sea ice dynamics, the form drag on pressure ridges and the air–ice drag coefficient are generally analysed based on wind velocities and sea-ice conditions.… read more here.
Keywords: ice drag; air ice; form drag; drag ... See more keywords
An effective three-marker drag model via sub-grid modeling for turbulent fluidization
Sign Up to like & getrecommendations! Published in 2018 at "Chemical Engineering Science"
DOI: 10.1016/j.ces.2018.08.026
Abstract: Abstract The effect of meso-scale structures on hydrodynamic predictions is not considered in the classically uniform drag models when the coarse grid is used. To address this issue, this study tries to develop an effective… read more here.
Keywords: three marker; sub grid; effective three; model ... See more keywords
Ability of a pore network model to predict fluid flow and drag in saturated granular materials
Sign Up to like & getrecommendations! Published in 2019 at "Computers and Geotechnics"
DOI: 10.1016/j.compgeo.2019.02.007
Abstract: Abstract The local flow field and seepage induced drag obtained from Pore Network Models (PNM) is compared to Immersed Boundary Method (IBM) simulations, for a range of linear graded and bimodal samples. PNM were generated… read more here.
Keywords: network; pore network; fluid flow; drag ... See more keywords
Rapid reduction of tidal amplitude due to form drag in a narrow channel
Sign Up to like & getrecommendations! Published in 2021 at "Continental Shelf Research"
DOI: 10.1016/j.csr.2020.104299
Abstract: Abstract Reversing Falls is a large sill in a narrow section of the Saint John River on the northern coast of the Bay of Fundy, Canada. Reversing Falls limits tides from propagating farther up the… read more here.
Keywords: reversing falls; form drag; rapid reduction; drag ... See more keywords