Mecanica De Fluidos Practicas

PRACTICA #1

“PROPIEDADES DE LOS FLUIDOS”

OBJETIVO.

Comprender y obtener en la práctica el valor de las propiedades de los fluidos y compararlos con valores teóricos.

DESARROLLO.

Llene uno de los vasos hidrométricos con suficiente agua para que flote el hidrómetro y verifique que la escala corresponda a la profundidad de inmersión de 1.00. Con esto se verifica la calibración del hidrómetro.

Llene los demás vasos hidrométricos con los líquidos a probar de manera suficiente para que flote el hidrómetro y anote la lectura de la escala para cada líquido.

DATOS.

Liquido Lectura de la escala = Gravedad especifica

Agua 1

Glicerina 1.225

Aceite para Motor 0.875

Aceite para Transmisión 0.850

RESULTADOS.

AGUA

ABSOLUTO TECNICO

MKS CGS Ingles MKS CGS Ingles

SF 1 1 1 1 1 1

ρF 1000 kg/m3 1 gr/cm3 62.4 lbm/ft3 102 UTM/m3 1.01x10-3 grf-s2/cm4 1.94 slug/ft3

γF 9810 N/m3 981 Dinas/cm3 2009 Poundal/ft3 1000 kgf/m3 1 grf/cm3 62.4 lb/ft3

VF 1x10-3 m3/Kgm 1 cm3/gm .016 ft3/lb 1x10-3 m3/grm 1 cm3/grf 0.016 ft3/lb

ρ_F=Sρ_H2O=1(1000kg/m^3 )=1000kg/m^3 =γ_F

ρ_F=Sρ_H2O=1(1gr/〖cm〗^3 )=1gr/〖cm〗^3 =γ_F

ρ_F=Sρ_H2O=1((62.4lb)/〖ft〗^3 )=(62.4lb)/〖ft〗^3 =γ_F

γ_F=ρg=(1000kg/m^3 )(9.81m/s^2 )=9810N/m^3

γ_F=ρg=(1gr/〖cm〗^3 )(981cm/s^2 )=981Dina/cm^3

γ_F=ρg=((62.4lb)/〖ft〗^3 )(32.2ft/s^2 )=2009poundal/cm^3

ρ=γ/g=(1000kg/m^3)/(9.81m/s^2 )=101.93 UTM/m^3

ρ=γ/g=(1gr/(cm^3 ))/(981cm/s^2 )=1.01X10-3 (gr_f s^2)/(cm^4 )

ρ=γ/g=(62.4lb/〖ft〗^3)/(32.3ft/s^2 )=101.93 slug/〖ft〗^3

Vs=1/ρ=1/(1000kg/m^3 )=(1X10^(-3) m^3)/kg

Vs=1/ρ=1/(1gr/〖cm〗^3 )=(1cm^3)/gr

Vs=1/ρ=1/((62.4lb)/〖ft〗^3 )=(0.016〖ft〗^3)/lb

GLICERINA

ABSOLUTO TECNICO

MKS CGS Ingles MKS CGS Ingles

SF 1.225 1.225 1.225 1.225 1.225 1.225

ρF 1225 kg/m3 1.225 gr/cm3 76.44 lb/ft3 124.872579 UTM/m3 0.00124873 grf*s/cm4 2.37391304 slug/ft3

γF 12017.25N/m3 1201.725 Dina/cm3 2461.368 poundal/ft3 1225kgf/m3 1.225grf/cm3 76.44lbf/m3

VF 0.00081633 m3/kg 0.81632653 cm3/gr 0.01308216 ft3/lb 0.00081633 m3/kgf 0.81632653 cm3/grf 0.01308216 ft3/lbf

ρ_F=Sρ_H2O=1.225(1000kg/m^3 )=1225kg/m^3 =γ_F

ρ_F=Sρ_H2O=1.225(1gr/〖cm〗^3 )=(1.225gr)/〖cm〗^3 =γ_F

ρ_F=Sρ_H2O=1.225((62.4lb)/〖ft〗^3 )=(76.44lb)/〖ft〗^3 =γ_F

γ_F=ρg=(1225kg/m^3 )(9.81m/s^2 )=12017.25N/m^3

γ_F=ρg=((1.225gr)/〖cm〗^3 )(981cm/s^2 )=1201.725Dina/cm^3

γ_F=ρg=((76.44lb)/〖ft〗^3 )(32.2ft/s^2 )=2461.368poundal/〖ft〗^3

ρ=γ/g=(1225kg/m^3)/(9.81m/s^2 )=124.8725 UTM/m^3

ρ=γ/g=((1.225gr)/(cm^3 ))/(981cm/s^2 )=0.0011248 (gr_f s^2)/(cm^4 )

ρ=γ/g=(76.44lb/〖ft〗^3)/(32.3ft/s^2 )=2.3739 slug/〖ft〗^3

Vs=1/ρ=1/(1225kg/m^3 )=(8.16X10^(-4) m^3)/kg

Vs=1/ρ=1/((1.225gr)/〖cm〗^3 )=(0.8163cm^3)/gr

Vs=1/ρ=1/((76.44lb)/〖ft〗^3 )=(0.013〖ft〗^3)/lb

ACEITE PARA MOTOR

ABSOLUTO TECNICO

MKS CGS Ingles MKS CGS Ingles

SF 0.875 0.875 0.875 0.875 0.875 0.875

ρF 875 kg/m3 0.875 gr/cm3 54.6 lb/ft3 89.1946993 UTM/m3 0.00089195 grf*s/cm4 1.69565217 slug/ft3

γF 8583.75 N/m3 858.375 Dina/cm3 1758.12 poundal/ft3 875 kgf/m3 0.875 grf/cm3 54.6 lbf/ft3

VF 0.00114286 m3/kg 1.14285714 cm3/gr 0.01831502 ft3/lb 0.00114286 m3/kgf 1.14285714 cm3/grf 0.01831502 ft3/lbf

ρ_F=Sρ_H2O=0.875(1000kg/m^3 )=875kg/m^3 =γ_F

ρ_F=Sρ_H2O=0.875(1gr/〖cm〗^3 )=(0.875gr)/〖cm〗^3 =γ_F

ρ_F=Sρ_H2O=0.875((62.4lb)/〖ft〗^3 )=(54.6lb)/〖ft〗^3 =γ_F

γ_F=ρg=(875kg/m^3 )(9.81m/s^2 )=8583.75N/m^3

γ_F=ρg=((0.875gr)/〖cm〗^3 )(981cm/s^2 )=858.375Dina/cm^3

γ_F=ρg=((54.6lb)/〖ft〗^3 )(32.2ft/s^2 )=1758.12poundal/〖ft〗^3

ρ=γ/g=(875kg/m^3)/(9.81m/s^2 )=89.194 UTM/m^3

ρ=γ/g=((0.875gr)/(cm^3 ))/(981cm/s^2 )=0.0008919 (gr_f s^2)/(cm^4 )

ρ=γ/g=(54.6lb/〖ft〗^3)/(32.3ft/s^2 )=1.6956 slug/〖ft〗^3

Vs=1/ρ=1/(875kg/m^3 )=(1.14X10^(-3) m^3)/kg

Vs=1/ρ=1/((0.875gr)/〖cm〗^3 )=(1.142cm^3)/gr

Vs=1/ρ=1/((54.6lb)/〖ft〗^3 )=(0.0183〖ft〗^3)/lb

ACEITE PARA TRANSMISION.

ABSOLUTO TECNICO

MKS CGS Ingles MKS CGS Ingles

SF 0.85 0.85 0.85 0.85 0.85 0.85

ρF 850 0.85 53.04 86.6462793 0.00086646 1.64720497

γF 8338.5 833.85 1707.888 850 0.85 53.04

VF 0.00117647 1.17647059 0.0188537 0.00117647 1.17647059 0.0188537

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