def test_perimeters(self):
Op, O1, O12, O2 = stratified.perimeters(0.5, 0.1)
self.assertAlmostEqual(Op, 1.5707963)
#Reduced precision because Beta only to 4 places
self.assertAlmostEqual(O1, 1.0788463, places=4)
self.assertAlmostEqual(O12, 0.4163317, places=4)
self.assertAlmostEqual(O2, 0.4919500, places=4)
def test_perimeters(self):
Op, O1, O12, O2 = stratified.perimeters(0.5, 0.1)
self.assertAlmostEqual(Op, 1.5707963)
#Reduced precision because Beta only to 4 places
self.assertAlmostEqual(O1, 1.0788463, places=4)
self.assertAlmostEqual(O12, 0.4163317, places=4)
self.assertAlmostEqual(O2, 0.4919500, places=4)
def test_lambda1(self):
Ap, A1, A2 = stratified.areas(0.5, 0.1)
Op, O1, O12, O2 = stratified.perimeters(0.5, 0.1)
Dp_H = 4*A1/(O1+O12)
vls = 3.0
v1 = vls*Ap/A1
epsilon = DHLLDV_constants.steel_roughness
nu_l = DHLLDV_constants.water_viscosity[20]
self.assertAlmostEqual(stratified.lambda1(Dp_H, v1, epsilon, nu_l),
0.01311036)
def test_lambda1(self):
Ap, A1, A2 = stratified.areas(0.5, 0.1)
Op, O1, O12, O2 = stratified.perimeters(0.5, 0.1)
Dp_H = 4*A1/(O1+O12)
vls = 3.0
v1 = vls*Ap/A1
epsilon = DHLLDV_constants.steel_roughness
nu_l = DHLLDV_constants.water_viscosity[20]
self.assertAlmostEqual(stratified.lambda1(Dp_H, v1, epsilon, nu_l),
0.01311036)
def test_lambda12(self):
Ap, A1, A2 = stratified.areas(0.5, 0.1)
Op, O1, O12, O2 = stratified.perimeters(0.5, 0.1)
Dp_H = 4*A1/(O1+O12)
vls = 3.0
v1 = vls*Ap/A1
v2 = 0.0
d = 0.3
nu_l = DHLLDV_constants.water_viscosity[20]
self.assertAlmostEqual(stratified.lambda12(Dp_H, d, v1, v2, nu_l),
0.46551996, places=5)
def test_lambda12(self):
Ap, A1, A2 = stratified.areas(0.5, 0.1)
Op, O1, O12, O2 = stratified.perimeters(0.5, 0.1)
Dp_H = 4*A1/(O1+O12)
vls = 3.0
v1 = vls*Ap/A1
v2 = 0.0
d = 0.3
nu_l = DHLLDV_constants.water_viscosity[20]
self.assertAlmostEqual(stratified.lambda12(Dp_H, d, v1, v2, nu_l),
0.46551996, places=5)
def test_lambda12_sf(self):
Ap, A1, A2 = stratified.areas(0.5, 0.1)
Op, O1, O12, O2 = stratified.perimeters(0.5, 0.1)
Dp_H = 4*A1/(O1+O12)
d=0.3
vls = 3.0
v1 = vls*Ap/A1
v2 = 0.0
epsilon = DHLLDV_constants.steel_roughness
nu_l = DHLLDV_constants.water_viscosity[20]
rho_s = 2.65
rho_l = DHLLDV_constants.water_density[20]
self.assertAlmostEqual(stratified.lambda12_sf(Dp_H, d, v1, v2, epsilon, nu_l, rho_l, rho_s),
0.25061545, places=5)
def test_lambda12_sf(self):
Ap, A1, A2 = stratified.areas(0.5, 0.1)
Op, O1, O12, O2 = stratified.perimeters(0.5, 0.1)
Dp_H = 4*A1/(O1+O12)
d=0.3
vls = 3.0
v1 = vls*Ap/A1
v2 = 0.0
epsilon = DHLLDV_constants.steel_roughness
nu_l = DHLLDV_constants.water_viscosity[20]
rho_s = 2.65
rho_l = DHLLDV_constants.water_density[20]
self.assertAlmostEqual(stratified.lambda12_sf(Dp_H, d, v1, v2, epsilon, nu_l, rho_l, rho_s),
0.25061545, places=5)