搜索结果: 1-15 共查到“知识库 turbulence”相关记录298条 . 查询时间(0.088 秒)
On the physical accuracy of scalar transport modeling in inhomogeneous turbulence
physical accuracy scalar transport modeling inhomogeneous turbulence
2016/5/18
Direct numerical simulations of scalar fields produced by uniform and line sources in channel flow are used as the basis for examining the accuracy of random flight and closure models in predicting tu...
Investigations on convective boundary layer turbulence using SODAR data
convective boundary layer acoustic sounding turbulence
2015/9/16
Acoustic sounding (SODAR) data collected in convective conditions were analysed to estimate high order
statistics of the vertical velocity in the lower half of the Convective Boundary Layer (CBL). Li...
Extremely low frequency plasma turbulence recorded by the DEMETER satellite in the ionosphere over the Abruzzi region prior to the April 6, 2009, L’Aquila earthquake
ionosphere turbulence earthquake
2015/8/24
The present study analyzes the low frequency fluctuations of the magnetic and electric fields prior to the earthquake with magnitude M.6.3 on April 6, 2009, in the Abruzzi region in Italy. This includ...
Ionospheric turbulence from ground-based and satellite VLF/LF transmitter signal observations for the Simushir earthquake (November 15, 2006)
VLF/LF signal propagation Eartquake precursors
2015/8/24
Signals from very low frequency (VLF)/ low frequency (LF) transmitters recorded on the ground station at Petropavlovsk-Kamchatsky and on board the French DEMETER satellite were analyzed for the Simush...
Marine Turbulence—Theories,Models,and Observations,Results of the CARTUM Project
Marine Turbulence Theories Models Observations CARTUM Project
2015/7/28
Ocean turbulence is a rich and fascinating field of study, both for its own sake and in the service of large-scale circulation and climate modeling efforts. Marine Turbulence is a collection of chapte...
Turbulence Observations in a Buoyant Hydrothermal Plume on the East Pacific Rise
Turbulence Observations Buoyant Hydrothermal Plume East Pacific Rise
2015/7/14
Hot vent fluid enters the ocean at high-temperature hydrothermal vents, also known as black smokers. Because of the large temperature difference between the vent fluid and oceanic near-bottom waters, ...
THEORETICAL AND EXPERIMENTAL INVESTIGATION OF ENERGY EXTRACTION FROM ATMOSPHERIC TURBULENCE
Atmospheric turbulence Gust soaring Energy extraction
2015/6/18
A simulation-based optimization procedure to design control laws for
energy extraction from realistic turbulence was
developed, leading to about 36% average energy
savings for a ‘bird-sized’ glider...
Birds frequently use the energy present in atmospheric currents to conserve their energy while flying.
Although energy in the form of thermal updrafts is routinely used by pilots of full-scale and m...
Kelvin-Wave Cascade and Decay of Superfluid Turbulence
Kelvin wave distortion vortex line cryogenic superfluid turbulence dynamics
2014/12/20
Kelvin waves (kelvons), the distortion waves on vortex lines, play a key part in the relaxation of superfluid turbulence at low temperatures. We present a weak-turbulence theory of kelvons. We show th...
Scale-Separation Scheme for Simulating Superfluid Turbulence: Kelvin-Wave Cascade
Kelvin from the distorted wave of vortex superfluid turbulence low temperature the numerical simulation of vortex line
2014/12/20
A Kolmogorov-type cascade of Kelvin waves—the distortion waves on vortex lines—plays a key part in the relaxation of superfluid turbulence at low temperatures. We propose an efficient numeric scheme f...
Scanning Superfluid-Turbulence Cascade by its Low-Temperature Cutoff
Kolmogorov low temperature quantization the vortex line density coefficient of friction
2014/12/19
On the basis of a recently proposed scenario of the transformation of the Kolmogorov cascade into the Kelvin-wave cascade, we develop a theory of low-temperature cutoff. The theory predicts a specific...
Kolmogorov and Kelvin-wave cascades of superfluid turbulence at T=0: What lies between
Vorticity quantitative long wave physics super fluid turbulent flow the vortex line
2014/12/19
As long as vorticity quantization remains irrelevant for long-wave physics, superfluid turbulence supports a regime macroscopically identical to the Kolmogorov cascade of a normal liquid. At high enou...
Coupling a new turbulence parametrization to RegCM adds realistic stratocumulus clouds
turbulence parametrization RegCM adds realistic stratocumulus
2014/12/10
To model stratocumulus clouds in the regional climate model, RegCM4.1, the University of Washington (UW)
turbulence parametrization has been coupled to RegCM. We
describe improvements in RegCM’s coa...
Unified parameterization of the planetary boundary layer and shallow convection with a higher-order turbulence closure in the Community Atmosphere Model: single-column experiments
the planetary boundary layer higher-order turbulence closure Community Atmosphere Model single-column experiments
2014/12/10
This paper describes the coupling of the Community Atmosphere Model (CAM) version 5 with a unified multi-variate probability density function (PDF) parameterization, Cloud Layers Unified by Binormals ...
Turbulence in the interstellar medium
Many variables Spectral imaging Observation The interstellar medium. The star gas
2014/12/9
The multivariate technique of principal component analysis (PCA) is a powerful statistical tool with which to describe spectral line imaging observations of the molecular interstellar medium. In parti...