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Class notes

Notas III Parcial

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Notas de clase y estudio individual basado en el libro para el tercer examen parcial.

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  • January 8, 2023
  • 9
  • 2021/2022
  • Class notes
  • Omar zúñiga
  • Iii parcial
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Mecánicade fluidos


Tuberíadedescarga
válvuladepaso ao tuberíadesucción
Bombade 2 o descarga
fluido ao
Tuberíade
succión




z z z


Energia
p otencial




Ecuación deBernoulli ga n a gz hu
Densidad

debomba
pérdidas



utilizadapara flujos estables incompresibles a lolargode unalineadecorriente enregionesno viscosasdeflujo
No hayfricción queconvierta energíamecánica a energiatérmica interna nose disipaenergíamecánica
limitantes flujoestable viscosidaddespreciable nohaytrabajodeese finjoincompresible transferenciadecalordespreciable

flujoa lolargodelíneadecorriente

Pérdidadebombaenformadepresión
setomanpérdidastotales ht ha ha

, Análisisinternodetubería


Rugosidad
Diámetro
longitud


i Finjocaminar fluidosemuevelentamente muybajarugosidad pocaspérdidas
2 Flujotransitorio láminas y remolinos
3 Flujoturbulento remolinosrugosidadafecta




deReynolds Re ecuación
que determina tipodeflujo

Densidad

velocidaddefinido de
Diámetro tubería

un pub
re r m
delruido
viscosidadcinemática delfinado
viscosidaddinámica




Re 2300 Flujolaminar Tabla
2300 re nooo Flujotransitorio
re nooo Flujo turbulento

64 Re
f fricción entubería Re caminar
longitud x Re
tira media
velocidad

a y y Re

Flujoturbulento
internadetubería
rugosidad taniaconEnormatenas


ED 2.5
Ecuaciónde colebrook s 37 re f r
f a log

Paraflujotransitorio se promedia valor f de flujolaminar y turbulento

Pérdidasmenores poraccesorios

valorporaccesorio Tania
Kira velocidadpromedio


m Pérdidasmenores 2g
ni hm han

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