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MECANICA DE FLUIDOS II
INDICE
I. INTRODUCCIÓN.................................................................2
II. OBJETIVOS.......................................................................3
III. MARCO TEÓRICO..............................................................4
FÓRMULA DE DARCY-WEISBACH............................................................4
INVESTIGACIONES EXPERIMENTALES SOBRE LAS PÉRDIDAS POR
FRICCIÓN EN TUBOS..............................................................................5
IV. EQUIPOS Y MATERIALES...................................................7
V. PROCEDIMIENTO..............................................................9
PERDIDA DE CARGA EN TUBERÍAS PARA VELOCIDADES BAJAS..............
PERDIDA DE CARGA EN TUBERÍAS PARA VELOCIDADES ALTAS..............
VI. TOMA DE DATOS............................................................10
VII. PROCESAMIENTO DE INFORMACIÓN Y RESULTADOS..........13
VIII. GRFICOS...................................................................1!
I". CONCLUCIONES Y RECOMENDACIONES............................24
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MECANICA DE FLUIDOS II
I. INTRODUCCIÓN
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MECANICA DE FLUIDOS II
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MECANICA DE FLUIDOS II
III. MARCO TEÓRICO
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MECANICA DE FLUIDOS II
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MECANICA DE FLUIDOS II
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MECANICA DE FLUIDOS II
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MECANICA DE FLUIDOS II
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MECANICA DE FLUIDOS II
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MECANICA DE FLUIDOS II
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MECANICA DE FLUIDOS II
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MECANICA DE FLUIDOS II
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E#$'# /%)'+"# #'! '*$"!,('# (" /")'0,(%("# %)$%# 7$3+*3)"!$'#8= %#1 3" %) "!0'!$+%+ ")!"+' (" R"&!')(# ("*"'# #')' $'%+ )'# /%)'+"# %&'+"# (" 4 70'' (,0" )%0'!(,0,<! (" R"&!')(#8= )'# /%)'+"# "!'+"# 3" 4 !' $'%+)'# "! 03"!$% &% 3" !'03)"! 0'! )% 0'!(,0,<! (%(%.
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VIII. GRFICOS
GRFICAS PARA PERDIDA DE CARGA EN TUBER>AS PARAVELOCIDADES BAJAS
G+- 1' L' > "! >3!0,<! (" L' V= %+% '*$"!"+ 3!%"03%0,<! "!$+" "#$'# %+:"$+'#.
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> . V
LA ECUACIÓN DE LA RECTA
Y .4X .Q
log hf =1.4999 logV −0.6979
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loghf −logV 1.4999=−0.6979
log( hf
V 1.4999 )=−0.6979
h f
V 1.4999
=10−0.6979
h f =0.2005V 1.4999
G+- 2' L' > "! >3!0,<! (" L' R"= %+% '*$"!"+ 3!%"03%0,<! "!$+" "#$'# %+:"$+'#.
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> 4 R"-
LA ECUACIÓN DE LA RECTA
Y - .5 X .
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log f =−0.5001log Re+0.3081
log f + log Re0.5001=+0.3081
f (¿× Re
0.5001)=+0.3081log ¿
f × R e0.5001=10
+0.3081
f =0.4919 Re−0.5001
C'! %&3(% (" "#$'# +:20'#= $+%$%+ (" ("$"+,!%+ ") /%)'+ (")% /")'0,(%( / %+% +9,"!"# )%,!%+.
R"K
f =0.4919 Re−0.5001
, f =0.4919(2300)−0.5001
f =0.04235
h f =f L V 2
2gD
R"")%' )'# /%)'+"# 0'!'0,('# %+% 0'!'0"+ )% /")'0,(%(@
h f =0.04235 0.5V
2
2(9.81)(0.004)
I3%)'@ h f =0.2005V
1.49990.04235
0.5V 2
2(9.81)(0.004 )
=0.2005V 1.4999
V 0.5001=0.7431
V 01=0.552m /s
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G+- 3' C'! )'# (" V ≥ /= (,*3?%+ ") +%20' (" > "!>3!0,<! (" V
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hf =0.1350V −0.0081
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f LV
2
2gD=0.1350V −0.0081
f =(0.1350V −0.0081 ) 2 gD
L V
2 V =0.552m / s
f =0.0342
G+- 4' C'! )'# (" V ≤ /= (,*3?%+ ") +%20' (" > "!>3!0,<! (" V
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hf =1.1988V +0.0468
64 vLV
2 gD2 =1.1988V +0.0468
v=(1.1988V +0.0468 ) 2 g D2
64 LV V =0.552m/s
v=1.26∗10−5m
2/s
GRFICAS PARA PERDIDA DE CARGA EN TUBER>AS PARAVELOCIDADES ALTAS
G+- 1' L' > "! >3!0,<! (" L' V= %+% '*$"!"+ 3!%"03%0,<! "!$+" "#$'# %+:"$+'#.
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LA ECUACIÓN DE LA RECTA
Y .54X .5K
log hf =1.5499logV −0.5032
loghf −logV 1.5499=−0.5032
log( hf
V 1.5499 )=−0.5032
h f
V 1.5499
=10−0.5032
h f =0.3139V 1.5499
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f .4 R"-.K5
LA ECUACIÓN DE LA RECTA
Y - .45 X .
log f =−0.4501log R e+0.318
log f + log Re0.4501=+0.318
f (¿× Re
0.4501)=+0.318log ¿
f × Re0.4501=10
+0.318
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f =2.0797 Re−0.4501
C'! %&3(% (" "#$'# +:20'#= $+%$%+ (" ("$"+,!%+ ") /%)'+ (")% /")'0,(%( / %+% +"1"!"# $3+*3)"!$'.
R"K
f =2.0797 Re−0.4501
, f =2.0797(2300)−0.4501
f =0.06381
h f =f L V
2
2gD
R"")%' )'# /%)'+"# 0'!'0,('# %+% 0'!'0"+ )% /")'0,(%(@
hf =0.06381 0.5V
2
2(9.81)(0.004)
I3%)'@ h f =0.3139V 1.5499
0.06381 0.5V
2
2(9.81)(0.004)=0.3139V 1.5499
V 0.4501=0.7721
V 01=0.563m/s
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G+- 3' C'! )'# (" V ≥ /= (,*3?%+ ") +%20' (" > "!>3!0,<! (" V
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S" '*$,"!" )% +")%0,<!= %+% ("$"+,!%+ )% 3! /%)'+ "(,' (" > %+% ") +9,"! $3+*3)"!$'@
h f =0.9231V −0.6379
f LV
2
2gD
=0.9231V −0.6379
f =(0.9231V −0.6379 ) 2 gD
LV 2 V =0.563m /s
f =−0.0585
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I". CONCLUCIONES Y RECOMENDACIONES
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