Diseño de un canal

Páginas: 19 (4526 palabras) Publicado: 11 de febrero de 2012
ANTEPROYECTO DE CANAL

DISEÑAR UN CANAL RECTANGULAR REVESTIDO DE CONCRETO CON UN TRAMO TRAPECIAL DE TIERRA. INICIANDO EN EL EMBALSE LAS RANAS SABEMOS QUE EL AGUA SE ENCUENTRA ALMACENADA Y SALE DE AHI CON UN FLUJO BRUSCAMENTE VARIADO ESTO NOS VA SERVIR PARA CONOCER EL PERFIL DE ESTE CANAL.

Valores estándar de las propiedades del agua:

CASO 1 SoSc

DE LAECUACION DE LA ENERGIA

------ 1

DE LA ECUACION DE FLUJO CRITICO DE NUMERO DE FROUD

----------- 2

IGUALANDO

Yc=2.267 m

-CALCULO DE LA VELOCIDAD

V=4.715 m/s

CALCULO DE AREA CRITICA
Ac=bYc
Ac=8.5(2.267)
Ac= 19.270 m2

PERIMETRO CRITICO
Pc=b + 2Yc= 8.5 + 2(2.267)
Pc= 13.034 m
Rc=Ac/Pc
Rc= 19.270/13.034Rc=1.478 m

GASTO
Q=VcAc
Q=4.715*19.270
Q=90.858 m3/S

-CALCULAMOS LA PENDIENTE CRITICA CON:

Sc=0.003

ScYn2 CASO 3

-ECUACION DE IMPULSO Y CANTIDAD DE MOVIMIENTO

igualando a cero

Y2>Yn2 POR LO TANTO LA AFIRMACION ES INCORRECTA NOS DA EL CASO 3 DONDE EL RESALTO HIDRAULICO SE FORMADESPUES DE LA PENDIENTE

-ENTONCES SUPONEMOS Y2=Yn2=3.446, Yn1=1.120 m
Yn1 > Y1 SUPOSICION CORRECTA
[pic]
1.120>1.038 SUPOSICION CORRECTA

-LONGITUD DE RESALTO
Lr= 5(Y2-Y1)
Lr= 5(3.446-1.038)
Lr= 12.040 m

CALCULO DE LA CURVA CON UN PERFIL S2 DEBIDO AL CAMBIO DE PENDIENTE
i |Yi |Ai |Pi |Ri |Ri4/3 |Vi |αVi2/2g |Ei |ΔE |Si |Sfi |So-Sfi |Δx |Xi | |0 |3.44 |29.24 |15.38 |1.9012|2.3552 |3.1073 |0.4921 |3.9321 |######## |0.0008 |######## |####### |0 |0 | |1 |3.43 |29.155 |15.36 |1.8981 |2.3502 |3.1164 |0.495 |3.925 |-0.0071 |0.0008 |0.0008 |0.02 |-0.3529 |-0.3529 | |2 |3.42 |29.07 |15.34 |1.895 |2.3451 |3.1255 |0.4979 |3.9179 |-0.0071 |0.0008 |0.0008 |0.02 |-0.3518 |-0.7047 | |3 |3.41 |28.985 |15.32 |1.892 |2.34 |3.1347 |0.5008 |3.9108 |-0.0071 |0.0008 |0.0008 |0.02 |-0.3506|-1.0553 | |70 |2.74 |23.29 |13.98 |1.666 |1.9749 |3.9012 |0.7757 |3.5157 |-0.0044 |0.0015 |0.0015 |0.019 |-0.2241 |-20.905 | |71 |2.73 |23.205 |13.96 |1.6622 |1.9691 |3.9154 |0.7814 |3.5114 |-0.0043 |0.0015 |0.0015 |0.019 |-0.2211 |-21.126 | |72 |2.72 |23.12 |13.94 |1.6585 |1.9632 |3.9298 |0.7871 |3.5071 |-0.0042 |0.0015 |0.0015 |0.019 |-0.218 |-21.344 | |172 |1.72 |14.62 |11.94 |1.2245 |1.31|6.2146 |1.9685 |3.6885 |0.0127 |0.0058 |0.0057 |0.015 |0.8311 |-9.3914 | |173 |1.71 |14.535 |11.92 |1.2194 |1.3027 |6.251 |1.9916 |3.7016 |0.0131 |0.0059 |0.0058 |0.015 |0.8629 |-8.5285 | |174 |1.7 |14.45 |11.9 |1.2143 |1.2955 |6.2878 |2.0151 |3.7151 |0.0135 |0.006 |0.0059 |0.015 |0.8958 |-7.6327 | |175 |1.69 |14.365 |11.88 |1.2092 |1.2882 |6.325 |2.039 |3.729 |0.0139 |0.0061 |0.006 |0.015 |0.93|-6.7028 | |195 |1.49 |12.665 |11.48 |1.1032 |1.1399 |7.1739 |2.6231 |4.1131 |0.0249 |0.0088 |0.0088 |0.012 |2.0311 |21.8118 | |196 |1.48 |12.58 |11.46 |1.0977 |1.1324 |7.2224 |2.6587 |4.1387 |0.0256 |0.009 |0.0089 |0.012 |2.1198 |23.9316 | |197 |1.47 |12.495 |11.44 |1.0922 |1.1248 |7.2715 |2.695 |4.165 |0.0263 |0.0092 |0.0091 |0.012 |2.2136 |26.1452 | |198 |1.46 |12.41 |11.42 |1.0867 |1.1172 |7.3214|2.732 |4.192 |0.027 |0.0094 |0.0093 |0.012 |2.3132 |28.4584 | |227 |1.17 |9.945 |10.84 |0.9174 |0.8915 |9.136 |4.2542 |5.4242 |0.0618 |0.0184 |0.0181 |0.003 |21.435 |229.539 | |228 |1.16 |9.86 |10.82 |0.9113 |0.8835 |9.2148 |4.3279 |5.4879 |0.0637 |0.0188 |0.0186 |0.002 |26.468 |256.007 | |229 |1.15 |9.775 |10.8 |0.9051 |0.8755 |9.2949 |4.4035 |5.5535 |0.0656 |0.0193 |0.0191 |0.002 |34.336|290.343 | |230 |1.14 |9.69 |10.78 |0.8989 |0.8675 |9.3765 |4.481 |5.621 |0.0676 |0.0199 |0.0196 |0.001 |48.372 |338.716 | |238 |1.06 |9.01 |10.62 |0.8484 |0.8032 |10.084 |5.183 |6.243 |0.0864 |0.0248 |0.0245 |-0.003 |-24.95 |124.169 | |239 |1.05 |8.925 |10.6 |0.842 |0.7951 |10.18 |5.2822 |6.3322 |0.0892 |0.0255 |0.0252 |-0.004 |-21.327 |102.842 | |240 |1.04 |8.84 |10.58 |0.8355 |0.787 |10.278 |5.3842...

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