A Modeling Study of Several Aspects of Canopy Flow
نویسنده
چکیده
Several aspects of canopy flow are investigated. The problem of steady flow in a horizontally infinite canopy under neutral thermal stratification is treated theoretically. The resulting analytical model is then used as a boundary condition for a nonlinear numerical model designed t o study transition regions near the leading and trailing edges of a canopy. This model shows a wave effect downstream from a leading edge observed in the field and laboratory. A tendency for a splitting of the flow near a windward canopy edge is also brought out.
منابع مشابه
The effect of ecophysiography on the quantitative characteristics of DBH, height, basal area, crown diameter and canopy area of trees in mountain forest communities (Case study: Oak-hornbeam community in Arasbaran forest)
Ecophysiography is the geography of the earth and the relationship between physiography and the ecosystem. Ecophysiography is a basis for planning processes to study the characteristics of terrestrial systems concerning the interactions between terrestrial physiography and living organisms. Due to the current state of ecosystems and the increase in natural disasters for ecosystem sustainability...
متن کاملModeling Production and Canopy Cover Parameters to identify the Most Effective Environmental Factors in Baghrou Semi-Steppe Rangelands of Ardabil Province, Iran
The aim of the study was to determine the most important environmental factors (topography, climate, and soil) affecting changes in production and canopy cover of plant variations and to prepare prediction maps, based on the most important factor, in semi-steppe rangelands of Hir-Baghrou, Ardabil province, Iran. First, by detecting the vegetation types and different classes of environmental fac...
متن کاملWater use pattern and canopy processes of cashew trees during a drying period in West Africagoo
Water flux in a young, 4-year old, cashew (Anacardium occidentale L.) plantation was studied over a dry season, from November 2001 to March 2002, in the forest-savannah transition zone of Ghana, West Africa. The temperature-difference method was used over this five-month period to quantify the diurnal and day-to-day whole-tree sap flow (Qt) and hence the canopy scale transpiration (Ec). M...
متن کاملModeling of monthly flow duration curve using nonlinear regression method for un-gauged watersheds of Ardabil Province
The flow duration curve (FDC) represents the frequency distribution of water flow over a period of time, which is widely used in hydrology to evaluate different ranges of river water flow applications. Therefore, it is necessary to develop a suitable estimation model and method in un-gauged watersheds. To this end, in the present study, a modeling method based on nonlinear regression, for the p...
متن کاملRisks assessment of forest project implementation in spatial density changes of forest under canopy vegetation using artificial neural network modeling approach
Risks assessment of forest project implementation in spatial density changes of forest under canopy vegetation using artificial neural network modeling approach Nowadays, environmental risk assessment has been defined as one of the effective in environmental planning and policy making. Considering the position and structure of vegetation on the forest floor, the main role of forest under ca...
متن کامل