Study of flow structure in erosion prone complex geometries

the effects of changing roughness on the flow structure in the bends

flow in natural river bends is a complex and turbulent phenomenon which affects the scour and sedimentations and causes an irregular bed topography on the bed. for the reason, the flow hydralics and the parameters which affect the flow to be studied and understand. in this study the effect of bed and wall roughness using the software fluent discussed in a sharp 90-degree flume bend with 40.3cm ...

the role of thematic structure in comprehending spoken language

in fact this study is concerned with the relationship between the variation in thematice structure and the comprehension of spoken language. so the study focused on the following questions: 1. is there any relationship between thematic structure and the comprehension of spoken language? 2. which of the themes would have greated thematic force and be easier for the subjects to comprehend? accord...

Prioritizinghydrological erosion-prone response units in Latyan catchment

Soil erosion in watersheds, causing problems such as the loss of agricultural land productivity and reduce soil surface layer, endangering the life of reservoirs and water utilities, loss of soil fertility, increasing flood, threatening human food security, etc. The negative effects of soil erosion, watershed management operations to improve care. According to the extent of the watershed and th...

Cartesian Grid Methods for Fluid Flow in Complex Geometries 1

Biological uid dynamics typically involves geometrically complicated structures which are often deforming in time. We give a brief overview of some approaches based on using xed Cartesian grids instead of attempting to use a grid which conforms to the boundary. Both nite-diierence and nite-volume methods are discussed, as well as a combined approach which has recently been used for computing in...

Hybrid Methods for Unsteady Fluid Flow Problems in Complex Geometries