Extended closure model for Kaimal's isopleths
A closure model for the spectral equation of turbulent kinetic energy, in the case of a steady-state and horizontally homogeneous flow in a stably stratified surface boundary layer is developed by use of systematic dimensional analysis. All resulting arbitrary functions that describe transfer mechanisms are subsequently Taylor-expanded in terms of their (small) arguments. This procedure leads to the closure of the system in terms of arbitrary constants which can subsequently be determined by fitting of observational data. The resulting solution is tested through comparison with experimental curves drawn from the Kansas experiment and with a formerly developed model.
PACS 47.25Turbulent flows, convection, and heat transfer
PACS 47.25.CgIsotropic turbulence homogenous turbulence
PACS 47.30Flows with body forces (e.g., rotating flows, buoyant flows)
Unable to display preview. Download preview PDF.
- N. Krusche:Modelo matemático para o espectro de energia turbulenta na baixa atmosfera, M. Sc. Thesis, Instituto de Física, Federal University of Rio Grande do Sul, Brazil (1990).Google Scholar
- L. I. Sédov:Similarity and Dimensional Methods in Mechanics (Infosearch Ltd., London, 1959).Google Scholar
- J. O. Hinze:Turbulence: An Introduction to its Mechanism and Theory (McGraw-Hill Book Company, Inc., New York, N.Y., 1959).Google Scholar