Notations bed b bf c cr d e g w o out i in bed bedload bedforms center or computed critical deposition (deposited volume) energy / erosion (eroded volume) grain fluid (water) or wall / bank outside outlet reach inside inlet reach m, x mean / average or measured max, min md, x d maximum, minimum mean / average over the depth mw, x w mean / average over the width of the channel ms, r s S ug w ⊥ θ x s ; x x mean / average over the cross-section radial direction / component sediment substrate uniform grain wall (influence) or acting on the wall perpendicular / projection tangential / stream direction / component * grain page 204 / November 9, 2002 Wall roughness effects on flow and scouring
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