wind modeling Articles

  • Progresses in wind analysis and modelling

    Renewable energy sources such as wind energy are copiously available without any limitation. Many studies have been done on wind and its effects due to its importance in human life. In this research, an attempt is preformed for describing the wide range of wind impacts. This paper has presented several fields of studies in related to wind modelling and frequency analysis. Some possible areas of ...


    By Inderscience Publishers

  • Verification of Wind-Driven Volatilization Models

    Abstract  Mass-transfer processes of paramount importance, such as reaeration and volatilization, occur at the air–water interface. Particularly, volatilization is intensively studied because it can be a relevant removal process for toxic contaminants from flowing and standing surface waters. The paper provides a comparison among predictive equations available from literature for standing ...


    By Springer

  • A model for simulating atmospheric dispersion in low-wind conditions

    A practical model for low-wind conditions was derived by integration of an instantaneous three-dimensional Gaussian puff equation, in which wind speed was assumed to be zero and standard deviations of a smoke (σy and σz) were expressed as a linear function of the dispersion time. When the plume spreads σy and σz were ...


    By Inderscience Publishers

  • A street canyon model for low wind-speed conditions

    The aim of the present work is to develop a simple model in order to calculate the vertical pollutant distribution inside a street canyon at low wind speed. It is aimed at providing a relationship between traffic emission and the pollutant in excess. It is assumed that street ventilation is controlled by the vertical turbulent diffusion. The diffusion coefficient Kz must be known. In the ...


    By Inderscience Publishers

  • Dispersion modelling in complex terrain using wind climatologies

    If annual mean values of concentration in complex terrain have to be determined, a representative wind climatology, which reflects local flow characteristics, is needed. This gives rise to two problems. First, observational data representative of the dispersion area are frequently not to hand. Second, the flow in the dispersion area itself may show a significant spatial structure, so transport is ...


    By Inderscience Publishers

  • Amassing Wind Information

    Wind is a variable resource, but not an indecipherable one. Second Wind encourages harnessing the full range of wind sensing technologies that are available today. When it comes to wind information, much attention is focused on the choice of wind measurement technology and data collection practices in wind resource assessment and project design. Right now, wind data plays a limited role in the ...


  • New methods for measuring the wind

    Although computer models of wind flow over terrain have improved dramatically in the past few years, there is still no substitute for data recorded at the site. So you want to build a wind farm. Good for you. With the global drive towards a low carbon economy, it is surely the right way to go for many individuals, companies and, indeed, Governments around the world. As information from the ...


  • A comparative study of two-equation turbulence models for simulating microscale wind flow

    Numerical modelling of turbulence plays a crucial role in providing accurate microscale wind fields which are necessary to predict transport and dispersion of pollutants in the vicinity of buildings reliably. Although more elaborate turbulence models have been developed, two-equation turbulence models are widely applied in atmospheric flow and dispersion models. The large CPU time required for ...


    By Inderscience Publishers

  • A 3-D wind and temperature pre-processor for ATD models

    Many atmospheric transport and dispersion models, based on various approaches and applied to different spatial scales, need 3-D meteorological fields referred to regular grid systems. Data generally available, however, cannot be directly employed because of their irregularities, inconsistencies, insufficient spatial detail or inadequate terrain representation. To fill the gap between these input ...


    By Inderscience Publishers

  • Changes in extreme wind speeds in NW Europe simulated by generalized linear models

    We investigate the capability of generalized linear models (GLMs) to simulate sequences of daily maximum wind speed (DMWS), at a selection of locations in NW Europe. Models involving both the gamma andWeibull distributions have been fitted to the NCEP reanalysis data for the period 1958–1998. In simulations, these models successfully reproduce the observed increasing trends up to 0.3m=s per ...


    By Springer

  • Model comparison in simulating the atmospheric dispersion of a pollutant plume in low wind conditions

    This study investigates the performance of different air pollution dispersion models in low wind conditions. The models have been applied to two sites frequently characterised by weak winds: the cities of Modena and Reggio Emilia, in the Po River Valley (Northern Italy). The emission sources are the municipal waste incinerator (Modena) and a turbogas plant (Reggio Emilia). Total Suspended ...


    By Inderscience Publishers

  • What are the advantages of ultrasonic wind sensors?

    Whether mechanical, ultrasonic or laser wind measurements: All measuring methods have technical limits. While for mechanical wind sensors the measuring element – cups and vanes – itself predominantly produces a disturbance in the flow field, for ultrasonic anemometers a disturbance can be caused by the sensor holder or housing construction. Only optical methods, e.g. LDA (Laser ...

  • Taking wind into account in the design of waste stabilisation ponds

    Up to now, most investigations on the dependency of the fluid flow patterns and performance of waste stabilisation ponds (WSPs) on wind speed and direction and pond layout have been performed using 2D and 3D CFD steady state isothermal models. 3D non steady state models integrating thermal processes and boundary conditions taking into account the full influence of meteorological factors are ...


    By IWA Publishing

  • Accounting for effects of wind rotation in the PBL on the plume characteristics

    The present work aims at demonstrating the influence of a number of dynamic effects in the PBL on the pollution concentration from a point source. The diffusion plume model applied in the study is based on the moment method. Limited number of numerical simulations, based on a more general model of a non-stationary, stratified, baroclinic PBL over a sloping terrain are carried out. The results are ...


    By Inderscience Publishers

  • Pro`Bat Project with Ultrasonic Wind Sensor

    Sens Of Life, who is an Engineering office, use our ultrasonic wind sensor to develop a new system to reduce bat mortality in wind farms. ProBat’ project is based on the combination of two idea: system of activity prediction and system of activity in real time. For this purpose, Sens Of Life use sensors network throughout Europe. Benefits of ProBat: Efficiency modelable before ...


    By LCJ Capteurs

  • On wind velocity profiles over urban area

    The horizontally homogeneous atmospheric boundary layer over rough surface with a large roughness length z0 is introduced to model the simplest cases of the Urban Planetary Boundary Layer (UABL) over the flat plain. The system of the equations of motion was non-dimensionalised and it has been demonstrated that the Rossby number similarity exists for the core of the UABL. That means that the ...


    By Inderscience Publishers

  • ANFIS and ANN models for the estimation of wind and wave-induced current velocities at Joeutsu-Ogata coast

    In this study, the adaptive network-based fuzzy inference system (ANFIS) and artificial neural network (ANN) were employed to estimate the wind- and wave-induced coastal current velocities. The collected data at the Joeutsu-Ogata coast of the Japan Sea were used to develop the models. In the models, significant wave height, wave period, wind direction, water depth, incident wave angle, and ...


    By IWA Publishing

  • WORM: A new open road line source model for low wind speed conditions

    Emission from road traffic constitutes one of the most important sources of air pollution in urban areas. This paper describes a newly developed air pollution dispersion model for open roads and highways called WORM (Weak Wind Open Road Model), and give some results using this model at Nordbysletta, Norway, in the period 1 January 200215 April 2002. Generally, a good correspondence was found ...


    By Inderscience Publishers

  • Parameters for a simple empirical model of building influenced dispersion based on field and wind-tunnel experiments

    Flow and dispersion around isolated obstacles, representative of those found in urban areas, is examined both in the field and in the wind tunnel. The experimental results are used to derive parameters for a simple empirical model for the estimation of concentrations in the recirculation region of isolated obstacles. Concentrations are estimated for a fully entrained plume as well as for partial ...


    By Inderscience Publishers

  • Dependence of street canyon concentrations on above-roof wind speed - implications for numerical modelling

    For microscale numerical modelling of street canyon air pollution, the traffic-related component of the total ambient pollutant concentration is often assumed to be inversely dependent on the wind-speed at rooftops for idealised conditions of neutral stratification, no solar radiation, and no traffic-induced turbulence. Detailed data analyses of two comprehensive datasets from Gottinger Strase ...


    By Inderscience Publishers

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