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Determination of the Aqueous Sublayer Thicknesses at an Air-Water Interface
Publisher: American Meteorological Society
Abstract: The thicknesses of the viscous and thermal sublayers in the water beneath an air-water interface are obtained by an application of the theory of rough-wall flows to results obtained in a laboratory wind, water-wave research ...
Evaluation of Turbulence Closure Models for Large-Eddy Simulation over Complex Terrain: Flow over Askervein Hill
Publisher: American Meteorological Society
Abstract: The evaluation of turbulence closure models for large-eddy simulation (LES) has primarily been performed over flat terrain, where comparisons with theory and observations are simplified. The authors have previously developed ...
Modification of Multiresolution Feature Analysis for Application to Three-Dimensional Atmospheric Wind Fields
Publisher: American Meteorological Society
Abstract: Multiresolution feature analysis (MFA), as originally proposed for estimating the fractal dimension of two-dimensional scalar fields, is described. MFA applies specified correlation filters to a data field (such as a ...
An Algebraic Model for Subgrid-Scale Turbulence in Stratified Flows
Publisher: American Meteorological Society
Abstract: Some aspects of the large eddy simulation method as applied to stratified flows are discussed and an algebraic model for subgrid-scale (SGS) turbulence is proposed. Differential equations for the SGS Reynolds stresses and ...
Effect of Turbulence Models and Spatial Resolution on Resolved Velocity Structure and Momentum Fluxes in Large-Eddy Simulations of Neutral Boundary Layer Flow
Publisher: American Meteorological Society
Abstract: This paper demonstrates the importance of high-quality subfilter-scale turbulence models in large-eddy simulations by evaluating the resolved-scale flow features that result from various closure models. The Advanced Regional ...
On the Structure of the Velocity Field over Progressive Mechanically-Generated Water Waves
Publisher: American Meteorological Society
Abstract: The structure of the velocity field over a propagating wave of fixed frequency is examined. The vertical and horizontal velocities were measured in a transformed Eulerian wave-following frame of reference in a wind-wave ...
A Numerical Study of Inversion-Layer Breakup and the Effects of Topographic Shading in Idealized Valleys
Publisher: American Meteorological Society
Abstract: Numerical simulations of inversion-layer breakup in idealized steep valleys are performed using the Advanced Regional Prediction System (ARPS) to investigate the effects of valley width and depth, and topographic shade. ...
Stably Stratified Flows near a Notched Transverse Ridge across the Salt Lake Valley
Publisher: American Meteorological Society
Abstract: This paper describes observed and simulated interactions among atmospheric forcing, cold-pool development, and complex mountain terrain at the south end of the Salt Lake valley, near the Jordan Narrows and the Traverse ...
High-Resolution Large-Eddy Simulations of Flow in a Steep Alpine Valley. Part II: Flow Structure and Heat Budgets
Publisher: American Meteorological Society
Abstract: This paper analyzes the three-dimensional flow structure and the heat budget in a typical medium-sized and steep Alpine valley?the Riviera Valley in southern Switzerland. Aircraft measurements from the Mesoscale Alpine ...