flow area wetted perimeter P hydraulic radius R₁ top width B hydraulic depth Dh rectangular B b bh b+2h bh b+2h b h trap

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Flow Area Wetted Perimeter P Hydraulic Radius R Top Width B Hydraulic Depth Dh Rectangular B B Bh B 2h Bh B 2h B H Trap 1 (77.11 KiB) Viewed 29 times

please help to derive the circular
1. flow area
2. wetted perimeter
3. top width
Thank you
flow area wetted perimeter P hydraulic radius R₁ top width B hydraulic depth Dh rectangular B b bh b+2h bh b+2h b h trapezoidal B m b (b+mh)h b+2h √√1+m² (b+mh)h b+ 2h √1+ m² b+2mh (b+mh)h b+2mh h triangular B m mh² 2h√√1+ m² mh 2√1+m² 2mh 1h 2 h circular B ¹ (0-sin 0 )D² 8 1 LOD 2 [1-sine] (sin 0/2)D 2h√(D-h) D 0 - sin 0 8 sin 0/2 or