Flujo Rapidamente Variado
July 18, 2022 | Author: Anonymous | Category: N/A
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AUTÓNOMA DE YUCATÁN YUCAT FACULTAD DE INGENIERIA
MA MATERIA: TERIA: HIDRÁULICA DE TUBERÍAS Y CANALES DOCENTE: ING. CESAR CANUL MACARIO M. I.
UNIDAD 6: FLUJO RAPIDAMENTE VARIADO TEMAS: 6.1. Carac!r"#$ca# %!&!ra'!# (!' )*+,. 6.-. Sa', $(r/*'$c,: c'a#$0cac$&2 a'*ra2 34r($(a (! !&!r%"a2 ',&%$*(2 3!r0' 5 *$cac$& (!' #a',.
RESALTO HIDRAULICO SOBREPRESION
AUMENTO PENDIENTE
CAIDA HIDRAULICA DEPRESION Yc EN PTO INFLE7ION
CAMBIO PENDIENTE CAIDA LIBRE
R,*#! Yc81.9Y, Yc81.9Y ,
Ca&$(a( (! ;,*! a'ca&a 'a a'*ra (! a%*a !& !' ca&a'.
•
•
E&!r%"a ca*#a(a 3,r !' !!c, (! 'a 3r!#$& (!'!'a%*a /r!a5 'a ra*! 'a ($#r$*c$& (! 3r!#$,&!# !& ca*c!# a #*3!r0c$! '$r! !# '$&!a'. La ($#r$*c$& ,a' (! 3r!#$,&!# 3*!(! #!r r!3r!#!&a(a 3,r *& *! 3ar$c$3a !& 'a !c*ac$& (! *!ra !#3!c"0ca
C*a&(, !' /&%*', (! $&c'$&ac$& (!' ca&a' !# ;*5 %ra&(! #! 3*!(! !&!r >*! ac!r *&a c,rr!cc$& c, rr!cc$& a' $ra&! c,;, #! ,#!r*! !& 'a !&!r%"a !#3!c"0ca 'a !c*ac$& !#a !& *&c$& (!' 3!#, !#3!c"0c, (!' a%*a >*! !r$ca;!&! !# c,a&! !&'a,(, !' ca&a' 3,r ',#,& >*!(!'a# *&$(a(!# (! *!ra !#3!c"0ca ;.
S$ #! $!&! )*+, *&$,r;! #! !#3!ra >*! 'a *!ra !#3!c"0ca !& !' ca&a' #!a c,a&! a ',# 'ar%, (!' ;$#;,.
D! $%*a' ,r;a >*! 'a !&!r%"a !#3!c"0ca #! ,#!r* E# *&a *&c$& (!' Ár!a >*! !# *&c$& (!' $ra&! ! 3, >*! #! 3*!(! c,r*$r >*! *&a !' c*r*! !& *& r!#a', $(r/*'$c, !$#! *&a 34r($(a (! !&!r%"a (a(a 3,r •
•
•
'a *r*'!&c$a (!' #a', $(r/*'$c, 3!r, &, *&a 34r($(a 34r($(a (! *!ra !#3!c"0ca. 3%s2rvese que para el mismo tirante ( ! (" se tiene una misma *uer+a
•
espec,-ca4 sin em%ar.o5 E no es i.ual a E"6
TIRANTES TIR ANTES CONJUG CONJUGADOS ADOS
6
Y G1 A1 +
β Q 2 gA1
=Y G 2 A2 +
β Q 2 gA2
La !c*ac$& #*%$!r! >*! ,(, #a', $(r/*'$c, 3*!(! #!r *&a *&c$& (! Y1Y-
S$& !;ar%, #a!;,# >*! !' Ár!a 5 !' c!&r,$(! YG #,& *&c$,&!# (!' $ra&! #*#$*5!&(, YG 3,r *&a *&c$& ZY (,&(! Z !# *&a c,a&! >*! (!0&! 'a *&c$& (!' c!&r,$(! 5 a(!;/# 81 !&!;,#:
Q2
Q2
k 1 y1 A1 + gA = k 2 y2 A2 + gA 1 2
k 2 y2 A2 − k 1 y1 A1 −
Q2 g
1 1 A − A = 0 1 2
M*'$3'$ca&(, ,(, 3,r A-
k 2 y2 A2
2
− k 1 y1 A1 A 2 − A(!;a#: F =
L*!%, #! ($*! ''!*! ra,ra *& %a#, (! - ;#. E' $ra&! a%*a# arr$a !# (! .9 ; 5 a #*r$(, *& ca;$, r*#c, (! 3!&($!&!.
Y 1 / D = 0.40 m / 2m = 0.2
Q 5/ 2 = g D
2m 3 / s
2
9.8m / s ( 2.0m)
5/ 2
= 0.112
Y 2 / D = 0.53 → Y 2 = 0.53 * 2.0m = 1.06m
2m 3 / s
Q g y
5/ 2 1
=
9.8m / s (0.4m) 2
6.31 5/ 2
=
y2 y1 = 2.6 → y2 = 2.6(0.40m) = 1.04m
PERFIL DE SAL SALTO TO Y LONGITUD
L,&%$*( r!a' (!' #a',2 ',&%$*( (!#(! !' r4%$;!& #*3!rcr"$c,2 a#a 'a >*! #! a'ca&a 'a ;/$;a !'!
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