The figure below shows the profile of a channel. This channel is earth (n = 0.040)...

 

Transcribed Image Text:

The figure below shows the profile of a channel. This channel is earth (n = 0.040) and has a slope of 0.0064 ft/ft. Bed Elevation (ft) 464 462- 460 458 456 454 452 -20 0 20 40 60 80 Distance (ft) The table below shows the hydraulic properties of this channel for different elevations. Stage Wetted Area Top Width Perimeter (ft) (ft³) (ft) (ft) 453 14 34 34 453.2 20 35 36 453.4 28 37 37 453.6 35 38 39 453.8 43 39 40 454 51 40 40 454.2 59 41 41 454.4 67 42 42 454.6 454.8 455 455.2 455.4 455.6 F་རྨའཋ " བ 76 43 44 84 44 45 93 45 46 102 46 47 112 47 48 121 48 49 455.8 131 49 50 456 141 50 51 456.2 151 51 52 456.4 161 51 53 456.6 171 52 53 456.8 182 52 54 457 192 53 55 Assuming that the flow is steady, uniform (normal) flow, is the flow in this channel subcritical or supercritical when Q = 200 cfs? The figure below shows the profile of a channel. This channel is earth (n = 0.040) and has a slope of 0.0064 ft/ft. Bed Elevation (ft) 464 462- 460 458 456 454 452 -20 0 20 40 60 80 Distance (ft) The table below shows the hydraulic properties of this channel for different elevations. Stage Wetted Area Top Width Perimeter (ft) (ft³) (ft) (ft) 453 14 34 34 453.2 20 35 36 453.4 28 37 37 453.6 35 38 39 453.8 43 39 40 454 51 40 40 454.2 59 41 41 454.4 67 42 42 454.6 454.8 455 455.2 455.4 455.6 F་རྨའཋ " བ 76 43 44 84 44 45 93 45 46 102 46 47 112 47 48 121 48 49 455.8 131 49 50 456 141 50 51 456.2 151 51 52 456.4 161 51 53 456.6 171 52 53 456.8 182 52 54 457 192 53 55 Assuming that the flow is steady, uniform (normal) flow, is the flow in this channel subcritical or supercritical when Q = 200 cfs?