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Journal articles on the topic 'Surface roughness and wind gustiness etc'

Author: Grafiati

Published: 3 June 2025

Last updated: 31 July 2025

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1

Onundi, L.O, M.B Oumarou, and Otuagbu Philip. "CLASSIFICATION OF NIGERIA WIND ISOPLETHS FOR STRUCTURAL PURPOSES." Continental J. Engineering Sciences 4 (July 22, 2009): 48–55. https://doi.org/10.5281/zenodo.833703.

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The paper reviewed the useful details of the Soboyejo Isopleths and the Nigerian Meteorological Agency wind Documentation map produced for Nigeria. Discrepancies were observed in the interpretations given to the data produced by the Agency. The researchers used a mathematical relationship between, the Soboyejo’s and the Nigerian Meteorological Agency data to produce results which correspond to 100 year mean recurrent interval. Gumbel Type I distribution model of yearly highest gust was used to analyse the data for some scattered points; while the Microsoft Office Excel was used as the tool for

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2

Yahaya, S., J. P. Frangi, and D. C. Richard. "Turbulent characteristics of a semiarid atmospheric surface layer from cup anemometers – effects of soil tillage treatment (Northern Spain)." Annales Geophysicae 21, no. 10 (2003): 2119–31. http://dx.doi.org/10.5194/angeo-21-2119-2003.

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Abstract. This paper deals with the characteristics of turbulent flow over two agricultural plots with various tillage treatments in a fallow, semiarid area (Central Aragon, Spain). The main dynamic characteristics of the Atmospheric Surface Layer (ASL) measured over the experimental site (friction velocity, roughness length, etc.), and energy budget, have been presented previously (Frangi and Richard, 2000). The current study is based on experimental measurements performed with cup anemometers located in the vicinity of the ground at 5 different levels (from 0.25 to 4 m) and sampled at 1 Hz.

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3

Memon, Halar, Jie Wang, and Xianghui Hou. "Interdependence of Surface Roughness on Icephobic Performance: A Review." Materials 16, no. 13 (2023): 4607. http://dx.doi.org/10.3390/ma16134607.

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Ice protection techniques have attracted significant interest, notably in aerospace and wind energy applications. However, the current solutions are mostly costly and inconvenient due to energy-intensive and environmental concerns. One of the appealing strategies is the use of passive icephobicity, in the form of coatings, which is induced by means of several material strategies, such as hydrophobicity, surface texturing, surface elasticity, and the physical infusion of ice-depressing liquids, etc. In this review, surface-roughness-related icephobicity is critically discussed to understand the

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4

Snaiki, Reda, and Teng Wu. "Knowledge-Enhanced Deep Learning for Simulation of Extratropical Cyclone Wind Risk." Atmosphere 13, no. 5 (2022): 757. http://dx.doi.org/10.3390/atmos13050757.

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Boundary-layer wind associated with extratropical cyclones (ETCs) is an essential element for posing serious threats to the urban centers of eastern North America. Using a similar methodology for tropical cyclone (TC) wind risk (i.e., hurricane tracking approach), the ETC wind risk can be accordingly simulated. However, accurate and efficient assessment of the wind field inside the ETC is currently not available. To this end, a knowledge-enhanced deep learning (KEDL) is developed in this study to estimate the ETC boundary-layer winds over eastern North America. Both physics-based equations and

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Yuge Liu, Yuge Liu, Ying Huang Yuge Liu, and Zhiyou Yang Ying Huang. "An Attuned Data Extraction Model for Maximizing Ocean Surface Wind Prediction Using Scatterometry." 電腦學刊 35, no. 4 (2024): 011–30. http://dx.doi.org/10.53106/199115992024083504002.

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<p>Scatterometers equipped with C-bands are deployed along the coast surface for measuring ocean and sea surface winds and roughness. Deployed in low orbital satellites, the electromagnetic signals transmitted are scattered at the ocean&rsquo;s surface from which the intensity and wind direction are detected. Wind intensity is impacted by different features such as salinity, scattering index, obstacles, etc., resulting in erroneous predictions. This article introduces an Attuned Data Extraction Method (ADEM) for detecting precise wind intensity and direction. The fore-mentioned error

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6

Frangi, J. P., and D. C. Richard. "The WELSONS experiment: overview and presentation of first results on the surface atmospheric boundary-layer in semiarid Spain." Annales Geophysicae 18, no. 3 (2000): 365–84. http://dx.doi.org/10.1007/s00585-000-0365-7.

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Abstract. This study presents the preliminary results of the local energy budget and dynamic characteristics of the surface atmospheric boundary-layer (SBL) during the WELSONS (wind erosion and losses of soil nutrients in semiarid Spain) experiment. Some Mediterranean regions suffer land degradation by wind erosion as a consequence of their particular soil and climate conditions and inappropriate agricultural practice. In Spain, where land degradation by water erosion is well known, the lack of field studies to quantify soils losses by wind erosion resulted in the European Community organizing

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7

ZHAO, Shuaike, and Hua SU. "Lubrication analysis of low-speed and heavy-load journal bearing in wind turbine gearbox under different operating conditions." Xibei Gongye Daxue Xuebao/Journal of Northwestern Polytechnical University 41, no. 5 (2023): 978–86. http://dx.doi.org/10.1051/jnwpu/20234150978.

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Aiming at the working conditions of frequent starting, low speed and heavy load, and yaw tilting of radial sliding bearings in wind turbine gearboxes, a numerical analysis model of the lubrication performance coupled with instantaneous starting and operating conditions of radial sliding bearings was established based on the average Reynolds equation, and the start-up phase was analyzed. The motion trajectory of the shaft diameter and the axis center was used to obtain the change state of the bearing film thickness from the start-up to the stable stage; the influences of the comprehensive surfa

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8

Meyer Forsting, AR, AS Olsen, M. Gaunaa, et al. "A spectral model generalising the surface perturbations from leading edge erosion and its application in CFD." Journal of Physics: Conference Series 2265, no. 3 (2022): 032036. http://dx.doi.org/10.1088/1742-6596/2265/3/032036.

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Abstract Blade leading edge erosion (LEE) is a major cost driver in the wind energy sector. LEE is caused by the environmental conditions under which the blades operate. The impact energy of the airborne particles striking the leading edge determines the speed of erosion, thus LEE severity grows towards the blade tip and with a turbine’s tip speed. Currently there is no established method for assessing the aerodynamic impact of LEE, either numerically or experimentally caused by a lack of erosion topological data and its stochastic nature. Whilst previous studies investigated specific realisat

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9

Kumar, Rahul, Mansoureh Rezapourian, Ramin Rahmani, Himanshu S. Maurya, Nikhil Kamboj, and Irina Hussainova. "Bioinspired and Multifunctional Tribological Materials for Sliding, Erosive, Machining, and Energy-Absorbing Conditions: A Review." Biomimetics 9, no. 4 (2024): 209. http://dx.doi.org/10.3390/biomimetics9040209.

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Friction, wear, and the consequent energy dissipation pose significant challenges in systems with moving components, spanning various domains, including nanoelectromechanical systems (NEMS/MEMS) and bio-MEMS (microrobots), hip prostheses (biomaterials), offshore wind and hydro turbines, space vehicles, solar mirrors for photovoltaics, triboelectric generators, etc. Nature-inspired bionic surfaces offer valuable examples of effective texturing strategies, encompassing various geometric and topological approaches tailored to mitigate frictional effects and related functionalities in various scen

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10

Nagayach, Neeraj Kumar, Kanishk Sharma, Yogesh Agrawal, and Anil Singh Yadav. "Revisiting the Effect of Rib Roughness on the Performance of Solar Air Heater." E3S Web of Conferences 430 (2023): 01264. http://dx.doi.org/10.1051/e3sconf/202343001264.

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The energy collected from various renewable resources, such as sunlight, geothermal warmth, wind, and water, is referred to as renewable power. The sun is the ultimate source of vitality. Solar radiation vitality can be utilized in many functions, such as heating buildings and dusty foliage crops, dying chicken, wood taste, and treating modern elements. All the energy patterns in nature asking them are the origin of the sun. The solar air heater (SAH) is very common along with commonly applied sun-oriented heating apparatus. Perhaps, SAH is utilized for a wide range of applications, from resid

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11

Zazimko, R. V., S. E. Romanenko, I. G. Ruban, S. V. Ivanov, Yu S. Tuchkovenko, and O. V. Derik. "High resolution modelling of severe wind patterns over the north-west Black Sea Region." Ukrainian hydrometeorological journal, no. 25 (July 16, 2020): 5–16. http://dx.doi.org/10.31481/uhmj.25.2020.01.

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The research studies the performance of the convective-permitting Harmonie model in reproducing mesoscale features of the wind regime over the north-western part of the Black Sea. It allowed establishing the optimum configuration, projection and geometry of the model's high spatial resolution area over Ukrainian part of the Black Sea, preparing a digital format for a coastline based on the resolution and conducting numerical experiments to verify informativeness and stability of computations. It also presents a detailed description of the forecasting procedure which includes a data flow from t

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12

Lipson, Mathew, Sue Grimmond, Martin Best, et al. "Harmonized gap-filled datasets from 20 urban flux tower sites." Earth System Science Data 14, no. 11 (2022): 5157–78. http://dx.doi.org/10.5194/essd-14-5157-2022.

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Abstract. A total of 20 urban neighbourhood-scale eddy covariance flux tower datasets are made openly available after being harmonized to create a 50 site–year collection with broad diversity in climate and urban surface characteristics. Variables needed as inputs for land surface models (incoming radiation, temperature, humidity, air pressure, wind and precipitation) are quality controlled, gap-filled and prepended with 10 years of reanalysis-derived local data, enabling an extended spin up to equilibrate models with local climate conditions. For both gap filling and spin up, ERA5 reanalysis

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13

Meyer Forsting, A., AS Olsen, NN Sørensen, A. Fischer, CM Markussen, and C. Bak. "An aerodynamic digital twin of real-world leading edge erosion: Acquisition, Generation and 3D CFD." Journal of Physics: Conference Series 2767, no. 2 (2024): 022021. http://dx.doi.org/10.1088/1742-6596/2767/2/022021.

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Abstract Wind turbine blades face extremely challenging environmental conditions over their operating life-time, that can easily exceed 2 decades. Airborne particles (insects, sand, rain, hail, ice, sea spray etc.) strike the blade leading edge (LE) first and erode or attach to it, roughening its surface. Leading edge roughness (LER) can critically alter the aerodynamic performance of blades, as its aerodynamic impact is strongly coupled to its height with respect to the local boundary layer thickness, which is thinnest around the LE. The actual, detailed topographic manifestation of LER on in

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14

SCHÜLEIN, ERICH, and VICTOR M. TROFIMOV. "Steady longitudinal vortices in supersonic turbulent separated flows." Journal of Fluid Mechanics 672 (March 4, 2011): 451–76. http://dx.doi.org/10.1017/s0022112010006105.

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Large-scale longitudinal vortices in high-speed turbulent separated flows caused by relatively small irregularities at the model leading edges or at the model surfaces are investigated in this paper. Oil-flow visualization and infrared thermography techniques were applied in the wind tunnel tests at Mach numbers 3 and 5 to investigate the nominally 2-D ramp flow at deflection angles of 20°, 25° and 30°. The surface contour anomalies have been artificially simulated by very thin strips (vortex generators) of different shapes and thicknesses attached to the model surface. It is shown that the in

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15

Pysarenko, L. A., and S. V. Krakovska. "Main directions in modern research of interaction between climate and land use/land cover changes." Ukrainian hydrometeorological journal, no. 25 (July 16, 2020): 38–52. http://dx.doi.org/10.31481/uhmj.25.2020.04.

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The purpose of the research is to analyse and assess existing approaches in investigation of interconnections between climate and underlying surface. Land use/land cover (LULC) influences climate formation via physical and chemical properties (albedo, roughness, height, chemical composition etc.). Climate in its turn affects land cover by means of meteorological parameters (air temperature and humidity, precipitation, wind etc.) and causes both cyclic and irreversible changes in land cover. In addition, anthropogenic factors exacerbate surface-climate interactions through? for example, LULC ch

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16

Olexandr A. Shchyptsov, Dmitry L. Kreta, Oleksiy G. Lebid, and Natalia A. Sheviakina. "Use of remote sensing results in the tasks of navigational and hydrographic situation monitoring." Environmental safety and natural resources 36, no. 4 (2020): 66–76. http://dx.doi.org/10.32347/2411-4049.2020.4.66-76.

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The paper presents the possibilities of using modern online sources of satellite information in the tasks of monitoring the ecological and navigational-hydrographic situation and building on their basis methods and information technologies to reflect the state of marine waters and operational forecasting of changes in this state. For the tasks of monitoring the ecological and navigational-hydrographic situation, one of the most convenient and informative is the marine environment monitoring service COPERNICUS (CMEMS). This service collects and presents data on observations of spatio-temporal v

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17

ERMİŞ, Kemal, Mehmet ÇALIŞKAN, and Anıl OKAN. "The effects of surface roughness on the aerodynamic drag coefficient of vehicles." International Journal of Automotive Science And Technology, May 28, 2022. http://dx.doi.org/10.30939/ijastech..1108956.

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In this study, the effects of surface roughness differences of vehicle coating ma-terials (paint, paste, special applications, etc.) on the aerodynamic drag coefficient were investigated using the finite element method. For this, aerodynamic drag forc-es and aerodynamic drag coefficients for speeds between 40-150 km/hours were calculated for a 1/20 scale vehicle designed by a package program by defining the body parts and front-rear window parts separately and assigning pre-calculated roughness values suitable in the industry, and the results were presented through graphs and visuals. Using th

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18

"Petro-Physical and Geo-Mechanical Analysis of the Unconventional Upper Safa Formation, Western Desert, Egypt." Petroleum and Chemical Industry International 2, no. 1 (2019). http://dx.doi.org/10.33140/pcii/02/01/06.

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World energy consuming at an all-time very high, where all resources are required such as renewable energies including solar, wind, besides nuclear energy, and biofuel. Now a days, there is not any source of renewable energy can supply and fulfill our increasing world demands of the energy consumption. Unconventional reservoirs can transform the world global energy market through advances in reservoir characterization, drilling, and completion technologies. Moreover, unconventional sources can be defined by their difference of intrinsic of their geological sittings, origins, and tapping mechan

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