Geography 1100 Lecture Notes - Lecture 7: Laminar Flow, Thalweg, Turbulence
17 Mar 2016
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Unit 6 fluvial action and the work of moving water. Fresh water 2. 78% of all water on earth. Ice and glaciers 99. 357% of surface water. Amount of moisture that would evaporate and transpire if adequate moisture was available. Amount of water lost under optimum moisture conditions. Highest values where air is really dry. Effluent stream gains water as it passes over surface: humid climate. Influent stream loses water: arid climate. Laminar flow water velocity increases as you get closer to the surface: water particles all moving in the same direction, occurs under low reynolds number. Turbulent flow water spins and does not want to move in one direction: when water velocity is high. Highest water velocity (looking down at the stream) is in centre. Q = av = wdv: a cross sectional area of stream. A = wd (w width, d depth: v water velocity, q discharge how much water flowing in a stream constant in certain areas (m3/s)
