دورية أكاديمية
Chaos Metrics for Testing Lagrangian Particle Models.
| العنوان: | Chaos Metrics for Testing Lagrangian Particle Models. |
|---|---|
| المؤلفون: | Kamada, R. F. |
| المساهمون: | NAVAL POSTGRADUATE SCHOOL MONTEREY CA DEPT OF PHYSICS |
| المصدر: | DTIC AND NTIS |
| سنة النشر: | 1993 |
| المجموعة: | Defense Technical Information Center: DTIC Technical Reports database |
| مصطلحات موضوعية: | Meteorology, Computer Programming and Software, CHAOS, PARTICLES, TURBULENT DIFFUSION, COMPUTERIZED SIMULATION, ATMOSPHERIC DISTURBANCES, METRIC SYSTEM, AMPLITUDE, ATMOSPHERICS, BOUNDARIES, BOUNDARY LAYER, DIFFUSION, DISPERSIONS, ENERGY, ENTROPY, FLUIDS, FRACTALS, FREQUENCY, KINETIC ENERGY, KINETICS, LAYERS, MEAN, PERIODIC VARIATIONS, STABILITY, VARIATIONS, ATMOSPHERE MODELS, LYAPUNOV FUNCTIONS, WEATHER FORECASTING, TEST AND EVALUATION |
| الوصف: | The Lorenz and Henon attractors and two atmospheric Lagrangian particle models were tested using self-affine fractal dimension, DA, Shannon information entropy, S, and the Lyapunov exponent, lambda, along with turbulent kinetic energy, vertical variance, and Brunt-Vaisala Frequency. Results show that (1) chaos metrics are a new set of tools to assess the micro behavior of Lagrangian particle models, (2) that periodicity in bifurcatory systems differs from wave behavior in fluids, since wave states are not limited to amplitude extrema. (3) Non-spectral particle models lead to unrealistic variations in 'the chaos metrics with changes in buoyant stability. (4) S and DA behave oppositely at times, implying that diffusion and dispersion are not equivalent, even in the absence of mean windflow. atmospheric dispersion/diffusion, Lagrangian particle models chaos, Self-affine fractals, Turbulence, Atmospheric boundary layer, strange attractors, Monte Carlo models, Lyapunov. |
| نوع الوثيقة: | text |
| وصف الملف: | text/html |
| اللغة: | English |
| العلاقة: | http://www.dtic.mil/docs/citations/ADA261429Test |
| الإتاحة: | http://www.dtic.mil/docs/citations/ADA261429Test http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA261429Test |
| حقوق: | APPROVED FOR PUBLIC RELEASE |
| رقم الانضمام: | edsbas.DE7AF267 |
| قاعدة البيانات: | BASE |
| الوصف غير متاح. |