Geography 1100 Chapter Notes - Chapter 11: Laminar Flow, Reynolds Number, Turbulence
14 Dec 2017
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Potential evaporation: all the moisture that is available to the plant. Effluent conditions: water is recharging the stream, water enters stream (humid climate) Influent conditions: water leaves stream into soil (arid climate) Laminar flow: all water particles move together (low velocity, low reynolds number) Turbulent flow: water particles all move separate ways (high velocity) Reynolds number: assesses the degree of turbulence in a stream flow. Stream velocity: greatest in straight channel at surface, lowest along the banks, obstructions along stream will affect velocity. Bedload sediment: bed load rolls slowly along the floor of the stream. Suspension of sediment: portion of the total sediment load of rivers that is carried in the water column. Horton stream numbers: stream order and are used to define stream size based on a hierarchy of tributaries. Youth river stage: valley: steep, straight, rocky, v-shaped; river: fast, straight, rapids, small. Maturity river stage: valley: wide, gentle/sloping banks; river: many tributaries, meanders, erosion downwards side-to-side.
