Special Issue "Large-Eddy Simulations (LES) of Atmospheric Boundary Layer Flows"

A special issue of Atmosphere (ISSN 2073-4433). This special issue belongs to the section "Biosphere/Hydrosphere/Land - Atmosphere Interactions".

Deadline for manuscript submissions: closed (15 July 2018)

Special Issue Editor

Guest Editor
Dr. Sukanta Basu

Faculty of Civil Engineering and Geosciences, Delft University of Technology, The Netherlands
Website | E-Mail
Interests: atmospheric boundary layer processes; turbulence modeling; optical turbulence; wind power meteorology; numerical weather prediction

Special Issue Information

Dear Colleagues,

The atmospheric boundary layer (ABL) spans the lowest few-hundred meters of the Earth’s atmosphere, and intensively exchanges mass (e.g., water vapor, pollutants), momentum, and heat with the underlying Earth’s surface. ABL has immense practical importance in a wide range of industrial (e.g., stack gas dispersion, wind energy generation), biological (e.g., pollen transport and deposition, migrations of birds and insects), natural (e.g., soil erosion, transport, and deposition), and meteorological (e.g., low-level jet formation) activities that take place in this turbulent layer. At the same time, owing to its high Reynolds number, ABL plays a critical role in advancing fundamental turbulence research. For decades, it has been the favorite playground of the theoretical physics community for testing a variety of universal scaling and similarity hypotheses.

At present, large-eddy simulation (LES) is the most efficient computational technique available for ABL simulations, in which the large scales of motion (on the order of a few meters and higher) are resolved explicitly, and the smaller ones (subgrid-scale or SGS) are modeled. Over the past four decades, the field of LES of ABL has evolved dramatically. LES has enabled researchers to probe various boundary layer flows by generating unprecedented high-resolution three-dimensional turbulence data. As a consequence, we have gained a better understanding of some complex ABL phenomena.

Atmosphere will publish a Special Issue on LES of ABL flows. The scope includes (but is not limited to):

  • Clear boundary layers
  • Cloudy boundary layers
  • Transitional boundary layers
  • Marine atmospheric boundary layers
  • Urban boundary layers
  • ABL flows over heterogeneous and/or complex terrain
  • LES of tornado-like vortices, downbursts, etc. 
  • Development of LES-SGS models
  • Validation of LES-SGS models
  • Gray-zone (also known as terra-incognita) modeling
  • Coupled mesoscale-LES modeling
  • LES-based parameterizations for mesoscale models
  • Applications: atmospheric optics, dispersion, evapotranspiration, wind energy, wind engineering, etc. 

We encourage submission of original research articles, as well as review manuscripts, from the ever-growing LES modeling community.

Dr. Sukanta Basu
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All papers will be peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Atmosphere is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 1400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • Clouds
  • Complex terrain
  • Convection
  • Heterogeneity
  • Gray-zone
  • Similarity theory
  • Stratification
  • Subgrid-scale model
  • Transition
  • Turbulence
  • Urban
  • Validation

Published Papers (1 paper)

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Research

Open AccessArticle Impact of Subgrid-Scale Modeling in Actuator-Line Based Large-Eddy Simulation of Vertical-Axis Wind Turbine Wakes
Atmosphere 2018, 9(7), 257; https://doi.org/10.3390/atmos9070257
Received: 24 June 2018 / Revised: 6 July 2018 / Accepted: 8 July 2018 / Published: 10 July 2018
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Abstract
A large-eddy simulation (LES) study of vertical-axis wind turbine wakes under uniform inflow conditions is performed. Emphasis is placed on exploring the effects of subgrid-scale (SGS) modeling on turbine loading as well as on the formation and development of the wind turbine wake.
[...] Read more.
A large-eddy simulation (LES) study of vertical-axis wind turbine wakes under uniform inflow conditions is performed. Emphasis is placed on exploring the effects of subgrid-scale (SGS) modeling on turbine loading as well as on the formation and development of the wind turbine wake. In this regard, the validated LES framework coupled with an actuator-line parametrization is employed. Three different SGS models are considered: the standard Smagorinsky model, the Lagrangian scale-dependent dynamic (LSDD) model, and the anisotropic minimum dissipation (AMD) model. The results show that the SGS model has a negligible effect on the mean aerodynamic loads acting on the blades. However, the structure of the wake, including the mean velocity and turbulence statistics, is significantly affected by the SGS closure. In particular, the standard Smagorisnky model with its theoretical model coefficient (i.e., CS0.16) postpones the transition of the wake to turbulence and yields a higher velocity variance in the turbulent region compared to the LSDD and AMD models. This observation is elaborated in more detail by analyzing the resolved-scale turbulent kinetic energy budget inside the wake. It is also shown that, unlike the standard Smagorinsky model, which requires detailed calibrations of the model coefficient, the AMD can yield predictions similar to the LSDD model for the mean and turbulence characteristics of the wake without any tuning. Full article
(This article belongs to the Special Issue Large-Eddy Simulations (LES) of Atmospheric Boundary Layer Flows)
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