Search results
Results from the WOW.Com Content Network
In addition to the surface layer, the planetary boundary layer also comprises the PBL core (between 0.1 and 0.7 of the PBL depth) and the PBL top or entrainment layer or capping inversion layer (between 0.7 and 1 of the PBL depth). Four main external factors determine the PBL depth and its mean vertical structure:
K-theory (eddy diffusivity/viscosity theory) is a form of local closure, and is the main first order closure scheme within the surface layer. K-theory follows a similar concept as molecular viscosity, in that the turbulent flux of a quantity is proportional to its spatial gradient, with K as the eddy viscosity/diffusivity.
The logarithmic profile of wind speeds is generally limited to the lowest 100 m of the atmosphere (i.e., the surface layer of the atmospheric boundary layer). The rest of the atmosphere is composed of the remaining part of the PBL (up to around 1 km) and the troposphere or free atmosphere.
A Pattern Language: Towns, Buildings, Construction is a 1977 book on architecture, urban design, and community livability.It was authored by Christopher Alexander, Sara Ishikawa and Murray Silverstein of the Center for Environmental Structure of Berkeley, California, with writing credits also to Max Jacobson, Ingrid Fiksdahl-King and Shlomo Angel.
Shearing layers is a concept coined by architect Frank Duffy, which was later elaborated by Stewart Brand in his book, How Buildings Learn: What Happens After They're Built (Brand, 1994), and refers to buildings as composed of several layers of change. The concept has been adopted by a number of technology vendors to also describe the different ...
Help; Learn to edit; Community portal; Recent changes; Upload file; Special pages
Triple deck theory is a theory that describes a three-layered boundary-layer structure when sufficiently large disturbances are present in the boundary layer. This theory is able to successfully explain the phenomenon of boundary layer separation, but it has found applications in many other flow setups as well, [1] including the scaling of the lower-branch instability of the Blasius flow, [2 ...
Architecture is variously defined in conflicting ways, highlighting the difficulty of describing the scope of the subject precisely: [1] [2] [3] A general term to describe buildings and other physical structures – although not all buildings are generally considered to be architecture, and infrastructure (bridges, roads etc.) is civil engineering, not architecture.