author = "Dopazo, C."

Encontrado 32 documentos, página mostrada 1 de 4

Singular boundaries in the forward chapman-kolmogorov differential equation

Author(s): Hierro, Juan , Dopazo, C.
Description: The forward Chapman-Kolmogorov differential equation is used to model the time evolution of the Probability Density Function of fluctuations. This equation may be restricted to either Master, Fokker-Planck or Liouville equations. A derivation of the Liouville equation with possible singular boundary...
Language(s): Inglés

Scalar probability density function mixing models need not comply with the linearity and independence hypothesis

Author(s): Hierro, Juan , Dopazo, C.
Description: In a mixture of scalar fields undergoing diffusive processes governed by Fick's law, the concentration at each point evolves linearly in the concentrations at all points and independently from the other concentrations, when one considers a finite differences integration of their evolution equations....
Language(s): Inglés

Fourth-order statistical moments of the velocity gradient tensor in homogeneous, isotropic turbulence

Author(s): Hierro, Juan , Dopazo, C.
Description: A compact expression of fourth-order statistical moments of the velocity gradient tensor in homogeneous, isotropic, incompressible turbulence is obtained as a function of its invariants and of generic components of the velocity gradient. This single, compact expression is in full agreement with the ...
Language(s): Inglés

Supply-cost curves for geographically distributed renewable-energy resources

Description: The supply-costcurves of renewable-energy sources are an essential tool to synthesize and analyze large-scale energy-policy scenarios, both in the short and long terms. Here, we suggest and test a parametrization of such curves that allows their representation for modeling purposes with a minimal se...
Language(s): Inglés

Local geometry of isoscalar surfaces

Description: PACS:47.51.+a, 47.27.Gs, 47.27.tb , An inert dynamically passive scalar in a constant density fluid forced by a statistically homogeneous field of turbulence has been investigated using the results of a 2563 grid direct numerical simulation. Mixing characteristics are characterized in terms of either p...
Language(s): Inglés

Water disinfection by hydrodynamic cavitation in a rotor-stator device

Description: The efficiency of a rotor-stator device for water disinfection based on hydrodynamic cavitation is investigated. Water is infected with E. coli and E. faecalis with initial concentrations in the range 5 × 102–1.2 × 106 CFU/ml. Various geometries of the cavitation channel between rotor and stator are...
Language(s): Inglés

Local entrainment velocity in a premixed turbulent annular jet flame

Description: The local entrainment velocity of the enstrophy interfaces of a methane-air turbulent premixed turbulent annular jet flame stabilized on a bluff-body burner has been investigated using a high-fidelity flame-resolved three-dimensional simulation. The enstrophy (inner and outer) and the scalar interfa...
Language(s): Inglés

Estimación de variables forestales de pinus sylvestris l. en el contexto de un inventario forestal aplicando tecnología LiDAR aeroportada Estimation of forest variables of pinus sylvestris l. in teh context of a forest inventory applying airborned LiDAR technology

Description: [EN] The aim of this study is to estimate a number of forest structure parameters by using airborne LiDAR data (nominal density of 0.5 points m(-2)) in the context of a forest inventory. The estimated variables are: volume, tree density, basal area, dominant height, mean square diameter and abovegro...
Language(s): Español

The Velocity Field in an Air-Blasted Liquid Sheet

Description: The instability growth that causes a liquid sheet break up when it is subjected to high velocity parallel air stteams has been anaIyzed in sorne recent experimental studies. Most of them have been based on visual observations from instantaneous spray jmages or oscillation frequency measurements. The...
Language(s): Inglés

Vorticity Constraints on a Fluid/Fluid Interface

Description: General relations among the components of the strain rate tensors and those of the tangential vorticities on the two sides of a liquid/gas interface are derived; kinematic constraints as well as the tangential-stress balance at the interface are used. For small gas to liquid dynamic viscosity ratios...
Language(s): Inglés

Encontrado 32 documentos, página mostrada 1 de 4

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