The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
The present Chapter of the lecture notes is divided into three different sections. The first section is devoted to the description of the equations governing a stratified flow field. The Reynolds averaged equations are derived together with the transport equations for the mean and turbulent kinetic energies. A background discussion on the spectral characteristics of a turbulent field is given, aimed...
In this second Chapter, we recall some basic notions on stably-stratified flows before focusing on internal gravity wave dynamics. In Section 1, we illustrate the occurence of stably-stratified flows in nature and, in Section 2, we derive the Boussinesq approximation. Except for a very brief presentation of the Kelvin-Helmholtz instability in Section 3, we start discussing about internal gravity waves...
Stratification effects on turbulence are examined in some fundamental shear flows. The differences between unbounded flows and those with walls are indicated. The role of the gradient Richardson number is assessed. Detailed results on turbulence energetics, transport and mixing are presented.
A review is presented of the turbulent structure and dynamics of the atmospheric boundary layer. First attention is given to some general aspects of the boundary layer in relation to its role in the dynamics of the atmosphere. The general characteristics of the boundary layer, such as turbulence are discussed and the equations for a horizontally homogeneous boundary layer are formulated. Based on...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.