UNIVERSIDAD NACIONAL SAN CRISTOBAL DE HUAMANGA
MECÁNICA DE FLUIDOS
ESCUELA DE FORMACIÓN PROFESIONAL DE INGENIERÍA CIVIL
The world’s largest digital library
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
The world’s largest digital library
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
The world’s largest digital library
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
The world’s largest digital library
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
The world’s largest digital library
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
UNIVERSIDAD UNIVERSIDAD NACIONAL SAN CRISTOBAL DE HUAMANGA F AC A C U LTA LTA D DE I NGENIER ´ I A D E M INAS G EOLOG´ I A Y C IVIL E SCUELA
DE
´ N P ROFESIONAL O ROFESIONAL F ORMACI ON
DE
IA C IVIL I NGENIER ´
´ CANICA DE FLUIDOS MECANICA E
TAREA DOMICILIARIA N°04 Docente: Ing.
´ PRADO Jaime Leonardo BENDEZU
Integrantes:
´ Jos´ ´ Luis CANDIA ROM AN, Jose ˜ IRCA NAUPA HUAMAN´I, I, Danny ´ Jhon Arnold TORRES GASTELU, HUARCAY HUARCAYA CONGACHA, Jhon Tonny ESPINO CANCHARI, Jonathan ´ AYACUCHO AYACUCHO - PER U 2018
The world’s largest digital library
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
The world’s largest digital library
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
The world’s largest digital library
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
The world’s largest digital library
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
HH
Dada la función de línea equipotencial, donde a, b y c son valores constantes. a) Comprobar que el flujo es irrotacional b) Hallar la función de la línea de corriente. c) Hallar la aceleración d) Hallar el gradiente de presiones. a) Para que el flujo sea irrotacional se debe cumplir:
∗∗ = 0
= ∗ + ∗ ∗ − ∗ = −´ ∗ = −− + + = −22++ − − 2 +0+ 0 ∗∗ = Vx Vy Vz ∗∗ = !Vz − Vy" # − !Vz − Vx" # − !Vy − Vx # ∗∗∗∗ == 00 − 0 − 0 − 0 − − + b) Hallar la función de la línea de corriente Por Cauchy – Riemann tenemos →
$ = %%'& = − %(%) * = %%)& = − %(%' / ,- ,= 22 ++ , ∗y .-- = 2 + + $ = , = −2 + = − y
%& %(
(∞)
The world’s largest digital library
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
The world’s largest digital library
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
The world’s largest digital library
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
The world’s largest digital library
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
HH
− 2 = −2 −2 −´− ´/ = 2 −− − / = 2 − 2 2 − - = 2 + 12 + 2 − 2 2 − 12 - = 2 + 12 − '==− −2 2−22 ++−−−−−2 −+ 2−− +0++20 − + + 2 − ' == −2 − − − − + − − +2 2 ) −2 − ) == 0 + + 2 −− 3 == ' ++) + 3+ 2 −− ++ + + 2 −− entonces
→
(β)
Reemplazando (β) en (∞) tenemos:
c) Hallar la aceleración:
The world’s largest digital library
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
The world’s largest digital library
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
The world’s largest digital library
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
The world’s largest digital library
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
HH
PROBLEMA 02: En la figura, se muestra dos reservorios conectados por una tubería lisa de 20 cm. de diámetro y 120m de longitud, por donde discurre un líquido a razón de 5kg/seg., la viscosidad dinámica del líquido es 1.59*10^-4 Kg/m*seg. Hallar la densidad del líquido y el caudal con que discurre.
4 = 205 6 7 = 1205 6 = 8 9:; 6 * = 1<1<8∗8 ∗ 10> ∗ ?:@
Por la ecuación del caudal:
Por la ecuación de Darcy:
The world’s largest digital library
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
The world’s largest digital library
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
The world’s largest digital library
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
The world’s largest digital library
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
HH
Entonces:
∗D∗ D = J
PROBLEMA 03: Demostrar matemáticamente que las líneas equipotenciales son perpendiculares a las líneas de corriente.
La línea de corriente está definida por:
$ = %M%' * = −NAO%M%) P$O,O PQROS ,O T QS5
La derivada total
La potencia de velocidad se define: de fine:
,N = −*, −*, +$,+ $,
$ = %U%' * = %U%)NAO P$O,O PQROS ,O T QS5
La derivada total
Y
, = *, +$, ,<,N = W−*, −*,,< ,N,+$, +N$,=0X< W*,*, +$, + $,X
El producto escalar de las líneas equipotenciales y las líneas de corriente son
ortogonales
The world’s largest digital library
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
The world’s largest digital library
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
The world’s largest digital library
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
The world’s largest digital library
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
The world’s largest digital library
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
HH
PROBLEMA 04: Demostrar las siguientes propiedades: a)
Z=ZZ=ZZ[Z[![ =⃗\+0 [⃗ ]+ [ # " ⃗\ ⃗ ] = ^[ [ ["^ = %_[ − %_[ ⃗\ %_[ − %_[ ]⃗+ %_[ − %_[
%)%3 %3%) %'%3 %'%3 %'%) %'%) =0 Z
b)
+
c)
]
+
ZF = Z
The world’s largest digital library
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
The world’s largest digital library
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
The world’s largest digital library
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
The world’s largest digital library
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
HH
= ! ⃗\+ ⃗ ]+ " # hFm ⃗\+ F)⃗]+ F"3 j − − − " Fm⃗\ ⃗ + F ] + F ) 3 F) − F' − " F' − " F3j ⃗\− h F' − F' − " F3j + " F' − F' = h − F3 + " F) Y ZZFZF = Z
PROBLEMA 06: En el sistema discurre agua de coeficiente de viscosidad cinemática (ν = 10-6 m2/seg), la bomba tiene una potencia de 120 HP con una eficiencia del 80%, L1 = 150m, f1 = 0.016, L2 = 300m., f2 = 0.019, L3 = 200m.,f3 = 0.0183, L4 = 30m y f4 = 0.0174. Considerando flujo de régimen turbulento con con superficie hidráulicamente lisa. Hallar: a) Los diámetros de las tuberías b) Los caudales en cada tubería tuber ía c) El espesor de la sub sub capa laminar
The world’s largest digital library
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
The world’s largest digital library
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
The world’s largest digital library
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
The world’s largest digital library
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
HH
DATOS:
nq == 10120rqLo 5pA R7/==I0s1805 180 5 t / = 0<01J 77v == u005 u002005 5 t = 0<01 200 5 t v = 0<01Iu 7> = u05 t > = 0<01w DD/v == DD> + Dv
Ecuaciones de continuidad
Ecuaciones de energía
The world’s largest digital library
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
The world’s largest digital library
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
The world’s largest digital library
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
The world’s largest digital library
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
HH
1 = −2{|}2<81€~O• ~O• / • 2 < 8 1 ∗ 1 0 ~O = • Q = ‚ 11<ƒ ∗ 4J∗n ∗ E7 q = D„A„wJRA − „ t „A − „ = r 4 = Gn~OD 120 = 1wJ00D0v
Despejando tenemos el número de Reynolds:
Espesor para superficie hidráulicamente lisa
Potencia
Diámetro
Hallando Hb:
Hallando el número de Reynolds y el diámetro para cada tubería:
The world’s largest digital library
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
The world’s largest digital library
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
The world’s largest digital library
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
The world’s largest digital library
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
HH
100 = 1<…<…0†o8‡101ˆ‡0‰LK‡_ŒD……Lv†o +I<‘ˆ‘‰I‘_J0…<…101†o0LŽ’ˆŒ’‰D’_Lv < 1u0 = Š‡‹ _ + Š‘‹ _ + Š’‹ _ −r +100 u0 = …<…†oŠ‡LK‡‹ˆ‡‰‡ +Lv…<…†oŠ‘‘‹ˆ‘‰‘ +LŽ…<…†oŠ’’Lv‹ˆ’‰’ − r L/ u0 = 1<081010 ŒD/ +I
PROBLEMA 07: En la figura N° 3 se tiene ddos os reservorios (A y B) y las tuberías (1 y 2) de hierro fundido con una rugosidad absoluta de 0.25 mm. Por donde se trasporta agua desde A hasta B y luego descargar en C, el tubo (1) de 0.2m. De diámetro tiene una longitud de 400m. Y el tubo (2) tiene una longitud de 500m. Considerando pérdidas por fricción y locales hallar el caudal que discurre por el sistema y el diámetro del tubo (2).
The world’s largest digital library
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
The world’s largest digital library
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
The world’s largest digital library
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
The world’s largest digital library
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
The world’s largest digital library
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
HH
”Š‡ = 0<00128
1. Analizamos el tramo A-B. La rugosidad relativa: Para considerar pérdidas locales en la tubería 1, la relación entre su longitud y diámetro debe ser menor o igual a 1500 .
ˆŠ‡ = >…<………… = 2000 1800 , en este caso la pérdida local se aproxima a cero : De la ecuación de la energía:
„E =a20 2=0 −„—8 +=E18518 5
Eˆ – 0<0<
7D E = 0<0I2J 4K 1818= 1860<0<2,KOAPO R,Q˜ DD = =1<0<082I∗I2JI2J001000 L>
De la ecuación de Darcy:
The world’s largest digital library
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
The world’s largest digital library
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
The world’s largest digital library
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
The world’s largest digital library
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
HH
)*& vs * !'& !' !%% !%$ !%# !%& !% !"% !"$ !"#
!&
!#
!$
!%
(
(!&
D = 1<82I∗ 10L> ™ = 0<0<0J∗J ∗ š…
De la fórmula obtenida hallamos el e l caudal Q para
(!#
(!$
(!%
The world’s largest digital library
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
The world’s largest digital library
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
The world’s largest digital library
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
The world’s largest digital library
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
HH
2 ž E = 8 − 2ƒ < < D = F . = 0G4<D10J8 = 0G4<0IuJ8 = 4
La velocidad la podemos hallar del caudal:
De la ecuación de Darcy:
7D 8 00 0 < 0 IuJ8 E = 0<0I2J 4K = 0<0I2J 4K E = 0
4
E
The world’s largest digital library
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
The world’s largest digital library
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
The world’s largest digital library
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
The world’s largest digital library
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
HH
Intersecamos las curvas igualando las ecuaciones
0<008š4K
y
:
El diámetro hallado D2 es igual a 0.26m<0.33m, entonces el procedimiento fue correcto al despreciar las pérdidas locales.
The world’s largest digital library
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
The world’s largest digital library
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
The world’s largest digital library
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
The world’s largest digital library
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
HH
PROBLEMA 08: En el sistema de la figura siguiente, se muestran tres reservorios y una bomba que qu e tiene una potencia de160H.P., La presión en el punto A es 42.00m de d e agua, si la válvula “X” produce una perdida perd ida de 2.00m.. Calcular loscaudales en cada tubería y la cota del Reservorio “R”, todas las tuberías son de fierro fundido nuevas (Coeficiente de Hazen y Williams (C = 120).
The world’s largest digital library
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
The world’s largest digital library
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
The world’s largest digital library
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
The world’s largest digital library
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
The world’s largest digital library
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
HH
Entonces:
£/ = 8<8<8 −u u0 D/ = 0<000002J2J ∗ 120120 ∗ 22 8 = 81<I qQ = ¥wJRDrDr— = 1I0 r— = wJ∗1∗1J0 „a − „— 2−„— = 1000∗81<I
Con la potencia:
The world’s largest digital library
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
The world’s largest digital library
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
The world’s largest digital library
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
The world’s largest digital library
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
HH
PROBLEMA 09: Una turbina Pelton de 0.9m de diámetro tangente al eje del
chorro (diámetro Pelton) posee unas cucharas que deflectan al chorro de agua un ángulo de 160°. El chorro es de 7.6cm. de diámetro. Despreciando la fricción, hallar la potencia desarrollada por la rueda y la eficiencia hidráulica cuando = 300 r.p.m. y la presión antes de la tobera es de 7.05kgf/cm2. Considerar que no hay pérdidas en la tubería.
The world’s largest digital library
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
The world’s largest digital library
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
The world’s largest digital library
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
The world’s largest digital library
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
HH
D… = D/ + D º »¼ = 0 0 = 0 − BDAOR20−BD//AOR20 D = D/ . D… = 2D/ q¥/ + 2ƒ/ + l/ = q¥ + 2ƒ + l /
c)
The world’s largest digital library
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
The world’s largest digital library
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
The world’s largest digital library
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
The world’s largest digital library
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
HH
PROBLEMA 12: La bomba BC transporta agua hasta el depósito F y en la figura se muestra la línea piezometríca determínese; a) la potencia suministrada por la bomba BC, b) la potencia extraída por la turbina DE y c) la cota de la superficie libre mantenida en el depósito F. ( y )
¿ = 0<00J5 * = 1 ∗ 10Lo ∗ @;_
The world’s largest digital library
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
The world’s largest digital library
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
The world’s largest digital library
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
The world’s largest digital library
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
1 À = −0<−0
HH
b) De la ecuación de Darcy Weiscbach:
c) La potencia de la bomba será: (110-29) =81m