chap0132

chap0132 - Appendix: Other Surface Water Profiles Mohamed...

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Appendix: Other Surface Water Profiles Mohamed S. Ghidaoui 2002 Horizontal Channel (H-Profiles): 0 RS C Q = or 2 / 1 0 3 / 2 S R n A Q = S o =0; Q finite, then y o is infinite! (i.e., uniform flow cannot be established) since 0 y Flow with y > y o cannot materialize. That is, H1 profile does not exist. Only H2 and H3 may be established. I/ = < < 0 y y y c 0 S S f and F < 1 < 0 dx dh h decreases with x. y o y c dh/dx < 0 y c H2 2 3
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II/ = < < 0 y y y c 0 S S f and F > 1 0 dx dh h increases with x Adverse Channel (A-Profiles): H3 y c H2 S f =0 H2 drop gate H3 HJ S f =0
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0 RS C Q = or 2 / 1 0 3 / 2 S R n A Q = Since S o < 0, then Q is imaginary! So uniform flow cannot be established, so flow can occur with y > y c or y < y c . I/ y y c < 0 S S f and F < 1
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chap0132 - Appendix: Other Surface Water Profiles Mohamed...

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