Results 31 to 40 of about 3,882,268 (171)

Passenger comfort during formation flight within atmospheric turbulence [PDF]

, 2012
Includes abstract.Includes bibliographical references.Formation flight is currently being investigated as a means to reduce drag and improve fuel efficiency in commercial aviation.
Bizinos, Nicholas
core   +1 more source

Turbulence‐Intensity Effects on the Aerodynamic Performance of an H‐Type Darrieus Wind Turbine: A URANS Parametric Study

Energy Science &Engineering, EarlyView.
Turbulence intensity from 1% to 25% was parametrically tested on a three‐bladed H‐type Darrieus rotor across five tip speed ratios (TSRs) using two‐dimensional URANS. The optimal TSR proved the most efficient and most robust operating point simultaneously, with Cp losses capped at 5.8% even at TI = 25%. ABSTRACT The effect of inlet turbulence intensity
Aydin Ulus
wiley   +1 more source

Impact of Negative Geostrophic Wind Shear on Wind Farm Performance

PRX Energy, 2022
Baroclinicity, which leads to height-dependent driving pressure gradients, occurs in various situations such as the flow transition between land and sea, and sloping terrain.
Anja Stieren, Jens H. Kasper, Srinidhi N. Gadde, Richard J.A.M. Stevens   +3 more
doaj   +1 more source

Characterising Vento Norte Downslope Windstorms and Their Thermal Impacts in Southern Brazil

International Journal of Climatology, EarlyView.
Using 20 years of hourly INMET observations in Santa Maria (southern Brazil), we identify 189 Vento Norte (VNOR) downslope windstorms, ~72% in winter, marked by abrupt warming, drying and strong northerly gusts. Across five biometeorological indices (TEFW, TDI, THI, HDI, Humidex), VNOR hours consistently show significantly higher thermal discomfort ...
Cinara Ewerling da Rosa, Michel Stefanello, Diego Portalanza, Mateus da Silva Rebelo, Gervasio Annes Degrazia, Milena Marquesin   +5 more
wiley   +1 more source

Material Collected From the Induced Seismicity State Task Force Meeting, Wednesday, April 16, 2014, Newman University, Wichita, Kansas

, 2014
Announcement -- Agenda -- Breakout Sessions: Questions and Responses -- An Ounce of Understanding is Worth a Pound of Cure / by Kyle E. Murray -- Induced Seismicity and the Oil and Gas Industry -- Overview of Kansas Earthquakes / Rick Miller, Shelby ...
Induced Seismicity State Task Force Meeting (2014 : Wichita, Kan.)
core   +1 more source

Numerical Study on Wake Characteristics and Fatigue Loads of Turbine Arrays with Different Layouts in Multiple Hills Terrain

Modelling
Recognizing that efficient and high-fidelity simulation of wind farms in mountainous terrain remains a significant challenge, this study adopted an integrated Large Eddy Simulation (LES) and Dynamic Wake Meandering (DWM) approach to conduct medium ...
Ying Huang, Zhiqiang Xin, Zhiming Cai, Songyang Liu, Yanming Xu   +4 more
doaj   +1 more source

Evaluation of Wind Flow Characteristics by RANS-Based Numerical Site Calibration (NSC) Method with Met-Tower Measurements and Its Application to a Complex Terrain

Energies, 2020
The performance of wind turbines is not only dependent on the wind turbine design itself, but is also dependent on the accurate assessment of wind resources at the installation site.
Jae-ho Jeong, Kwangtae Ha
doaj   +1 more source

Laboratory Studies of Internal Solitary Waves Propagating and Breaking over Submarine Canyons

Journal of Marine Science and Engineering, 2023
This paper carried out laboratory experiments to study evolution of internal solitary waves (ISWs) over submarine canyons with a combination of PIV (particle image velocimetry) and PLIF (planar laser-induced fluorescence) techniques.
Ying-Tien Lin, Ling Liu, Biyun Sheng, Yeping Yuan, Keke Hu   +4 more
doaj   +1 more source

New insights into convection‐permitting model simulations from a ZDR$$ {\boldsymbol{Z}}_{\mathbf{DR}} $$ diagnostic for raindrops

Quarterly Journal of the Royal Meteorological Society, EarlyView.
A polarimetric radar forward operator to simulate differential reflectivity (ZDR$$ {Z}_{\mathrm{DR}} $$) from rain was developed to evaluate simulated storms in the Met Office Unified Model (MetUM) for two case days of the Wessex Convection Experiment (WesCon) field campaign. Vertical columns of ZDR$$ {Z}_{\mathrm{DR}} $$, indicative of strong updrafts,
Chun Hay Brian Lo, Thorwald H. M. Stein, Christopher D. Westbrook, Paul R. Field, Kalli Furtado, Robert W. Scovell, Jonathan M. Wilkinson, Timothy Darlington, Humphrey W. Lean, Ryan R. Neely III, Christopher J. Walden   +10 more
wiley   +1 more source

Influence of height of earth embankment type windbreak wall on flow field characteristics and catenary wind-induced displacement

Engineering Applications of Computational Fluid Mechanics, 2021
This paper aims at ensuring the safety of catenary operation, by considering the flow field characteristics of the specific railway terrain and the wind-induced dispalcement of the catanery contact wires.
Fan Yang, Tanghong Liu, Zouliang Shi, Yutao Xia, Zhenghua Jiang, Tianhu Han   +5 more
doaj   +1 more source