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Marc Parlange

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Related publications (97)

On the Parameterization of Surface Roughness at Regional Scales

Marc Parlange, Charles Vivant Ignacio Meneveau

A parameterization for surface roughness and blending height at regional scales, under neutral atmospheric stability, is studied and tested. The analysis is based on a suite of large-eddy simulations (LES) over surfaces with varying roughness height and mu ...

2007

Application of the Kano-Hamilton Multiangle Inversion Method in Clear Atmospheres

Marc Parlange

An improved measurement methodology and a data-processing technique for multiangle data obtained with an elastic scanning lidar in clear atmospheres are introduced. Azimuthal and slope scans are combined to reduce the atmospheric heterogeneity. Vertical pr ...

2007

The Local Structure of Atmospheric Turbulence and Its Effect on the Smagorinsky Model for Large Eddy Simulation

Marc Parlange, Charles Vivant Ignacio Meneveau

Phenomena such as large-scale shear, buoyancy, and the proximity to the ground surface significantly affect interactions among scales in atmospheric boundary layer turbulent flows. Hence, these phenomena impact parameters that enter subgrid-scale (SGS) par ...

2007

Modeling turbulent flow over fractal trees with renormalized numerical simulation

Marc Parlange, Charles Vivant Ignacio Meneveau

High-Reynolds number flow over tree-like fractals is considered, with emphasis on the drag forces produced. Fractal objects display large scale-disparity and complexity while being amenable to a simple and standardized description. Hence, they offer an ele ...

2007

A comparative quadrant analysis of turbulence in a plant canopy

Marc Parlange, Charles Vivant Ignacio Meneveau

Large-eddy simulation (LES) of turbulence in plant canopies has traditionally been validated using bulk statistical quantities such as mean velocity and variance profiles. However, turbulent exchanges between a plant canopy and the atmosphere are dominated ...

2007

Large-eddy simulation of plant canopy flows using plant-scale representation

Marc Parlange, Charles Vivant Ignacio Meneveau

Turbulent flow in a corn canopy is simulated using large-eddy simulation (LES) with a Lagrangian dynamic Smagorinsky model. A new numerical representation of plant canopies is presented that resolves approximately the local structure of plants and takes in ...

2007

The Effect of Filter Dimension on the Subgrid-Scale Stress, Heat Flux, and Tensor Alignments in the Atmospheric Surface Layer

Marc Parlange, Chad Higgins, Charles Vivant Ignacio Meneveau

In field experiments designed to study subgrid-scale parameterizations for large eddy simulation, the flow field is often measured and then filtered in two-dimensional planes. This two-dimensional filtering serves as a surrogate for three-dimensional filte ...

2007

Large-eddy simulation of a diurnal cycle of the atmospheric boundary layer: Atmospheric stability and scaling issues

Marc Parlange, Charles Vivant Ignacio Meneveau, Vineet Kumar

A simulation of a diurnal cycle of atmospheric boundary layer (ABL) flow over a homogeneous terrain is performed using large-eddy simulation (LES) with the Lagrangian scale-dependent dynamic subgrid-scale model. The surface boundary condition is derived fr ...

American Geophysical Union2006

Assessing stream–aquifer interactions through inverse modeling of flow routing

Marc Parlange

Flux-exchange between stream and aquifer is assessed on a 85.9 km stretch of the Danube River in Hungary. Streamflow is modeled with a spatially and temporally discretized version of the linear kinematic wave equation written in a state-space form which al ...

2006

Distributed fiber-optic temperature sensing for hydrologic systems

Luc Thévenaz, Marc Parlange, Wolf Hendrik Huwald, Nicolaas Cornelis van de Giesen

Instruments for distributed fiber-optic measurement of temperature are now available with temperature resolution of 0.01°C and spatial resolution of 1 m with temporal resolution of fractions of a minute along standard fiber-optic cables used for communicat ...

2006

Fiber optics opens window on stream dynamics

Marc Parlange, Nicolaas Cornelis van de Giesen

A new approach to monitoring surface waters using distributed fiber optic temperature sensing is presented, allowing resolutions of temperature of 0.01°C every meter along a fiber optic cable of up to 10,000 m in length. We illustrate the potential of this ...

2006

Modeling Flow around Bluff Bodies and Predicting Urban Dispersion Using Large Eddy Simulation

Marc Parlange, Charles Vivant Ignacio Meneveau

Modeling air pollutant transport and dispersion in urban environments is especially challenging due to complex ground topography. In this study, we describe a large eddy simulation (LES) tool including a new dynamic subgrid closure and boundary treatment t ...

2006

Numerical study of dynamic Smagorinsky models in large-eddy simulation of the atmospheric boundary layer: Validation in stable and unstable conditions

Marc Parlange, Charles Vivant Ignacio Meneveau, Vineet Kumar

Large-eddy simulation (LES) of atmospheric boundary layer (ABL) flow is performed over a homogeneous surface with different heat flux forcings. The goal is to test the performance of dynamic subgrid-scale models in a numerical framework and to compare the ...

American Geophysical Union2006

A scale-dependent Lagrangian dynamic model for large eddy simulation of complex turbulent flows

Marc Parlange, Charles Vivant Ignacio Meneveau

A scale-dependent dynamic subgrid model based on Lagrangian time averaging is proposed and tested in large eddy simulations sLESd of high-Reynolds number boundary layer flows over homogeneous and heterogeneous rough surfaces. The model is based on the Lagr ...

2005

Future of Water Resources Research

Marc Parlange, Scott W. Tyler

American Geophysical Union2005

Pathology of Monin-Obukhov similarity in the stable boundary layer

Marc Parlange

The performance of Monin-Obukhov similarity (MOS) theory has been investigated for four types of events of transient physical processes in the stable nocturnal boundary layer during the Cooperative Atmosphere-Surface Exchange Study-99 (CASES-99). These fou ...

2005

Similarity solution of axisymmetric flow in porous media

Marc Parlange, David Andrew Barry

Applications of the axisymmetric Boussinesq equation to groundwater hydrology and reservoir engineering have long been recognised. An archetypal example is invasion by drilling fluid into a permeable bed where there is initially no such fluid present, a ci ...

2005

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