perdida de carga en una tuberia

7/23/2019 Perdida de Carga en Una Tuberia

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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




I. INTRODUCCIÓN

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E#$3(,%+ "! >'+% ("$%))%(% )%# 9+(,(%# (" 0%+% "!$3*"+1%#= '*$"!,"!(' 3!% +%! /%+,"(%( (" 03+/%# 3"+")%0,'!%! )'# 0'"20,"!$"# (" 9+(,(%# > "! >3!0,<! (")!"+' (" R"&!')(#.

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III. MARCO TEÓRICO

FÓRMULA DE DARCY#$EISBAC%L%# 9+(,(%# (" "!"+1% "! $3*"+1%# #" ,("! "! "$+'# ("0')3!% (" 63,(' 0,+03)%!(' '+ )% $3*"+1%= & "#$:!+")%0,'!%(%# 0'! )% /")'0,(%(= %+% 3! 63?' "+%!"!$"= "!

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v

INVESTIGACIONES E"PERIMENTALES SOBRE LAS P*RDIDASPOR FRICCIÓN EN TUBOS

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1

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1

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ε , f =f ( Re , ε / D)




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PERDIDA DE CARGA EN TUBER>AS PARA VELOCIDADESALTAS

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VIII. GRFICOS

GRFICAS PARA PERDIDA DE CARGA EN TUBER>AS PARAVELOCIDADES BAJAS

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LA ECUACIÓN DE LA RECTA

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V 1.4999 )=−0.6979

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f =0.4919 Re−0.5001

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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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hf =0.1350V −0.0081



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f =(0.1350V −0.0081 ) 2 gD

L V

2 V =0.552m / s

f =0.0342

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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

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f × Re0.4501=10

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f =2.0797 Re−0.4501

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h f =f L V

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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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h f =0.9231V −0.6379

f LV

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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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