Water Properties
Fluid Dynamics / water-properties.yaml 13 records
2 sections
water_eos 11 polynomials 2
water eos
- formula
- H2O
- model
- IAPWS-95
- Tc K
- 647.096
- Pc Pa
- 2.2064e+7
- rhoc kgm3
- 322
- R gas
- 461.51805
- Tt K
- 273.16
- Pt Pa
- 611.657
alpha ideal
- n1
- -8.32044648
- n2
- 6.68321053
- n3
- 3.00632
terms (5)
#1
- n
- 0.012436
- gamma
- 1.287289
#2
- n
- 0.97315
- gamma
- 3.537342
#3
- n
- 1.2795
- gamma
- 7.740737
#4
- n
- 0.96956
- gamma
- 9.244378
#5
- n
- 0.24873
- gamma
- 27.50751
alpha residual
terms polynomial (5)
#1
- n
- 0.01253355
- d
- 1
- t
- -0.5
#2
- n
- 7.89576347
- d
- 1
- t
- 0.875
#3
- n
- -8.78032033
- d
- 1
- t
- 1
#4
- n
- 0.31802509
- d
- 2
- t
- 0.5
#5
- n
- -0.26147372
- d
- 2
- t
- 0.75
terms exponential (1)
#1
- n
- -0.02199573
- d
- 1
- t
- 6.5
- c
- 1
ancillary equations
saturation pressure
- type
- Wagner-Pruss
- Tc
- 647.096
- Pc
- 2.2064e+7
- variable
- theta = (1 - T/Tc)
- form
- ln(P/Pc) = (Tc/T) * sum(n_i * theta^p_i)
terms (6)
#1
- n
- -7.85951783
- power
- 1
#2
- n
- 1.84408259
- power
- 1.5
#3
- n
- -11.7866497
- power
- 3
#4
- n
- 22.6807411
- power
- 3.5
#5
- n
- -15.9618719
- power
- 4
#6
- n
- 1.80122502
- power
- 7.5
surface tension
- type
- IAPWS-94
- variable
- tau = 1 - T/Tc
- form
- sigma = B * tau^mu * (1 + b * tau)
coefficients
- B
- 0.2358
- b
- -0.625
- mu
- 1.256
ionization constant
- type
- IAPWS-pKw (2006)
- description
- Bandura and Lvov (2006). Function of T and Density.
- form
- pKw = A + B/T + C/T^2 + D/T^3 + (E + F/T + G/T^2)*log10(rho)
coefficients
- A
- 0
- B
- 0
viscosity
- type
- IAPWS-2008
- description
- Dynamic Viscosity as function of T and rho.
- form
- mu = mu0(T) * mu1(T,rho) * mu2(T,rho)
components
- mu0
- Dilute gas viscosity
- mu1
- Initial density dependence
- mu2
- Critical enhancement
thermal conductivity
- type
- IAPWS-2011
- description
- Thermal Conductivity as function of T and rho.
dielectric constant
- type
- IAPWS-1997
- description
- Static Dielectric Constant.
refractive index
- type
- IAPWS-1997
- description
- Refractive Index.
polynomials
Water Liquid Density (Kell 1975)
- name
- Water Liquid Density (Kell 1975)
- variable
- t_celsius
- max degree
- 5
- min
- 0
- max
- 100
coefficients
- 0
- 999.842594
- 1
- 0.06793952
- 2
- -0.00909529
- 3
- 1.0017e-4
- 4
- -1.1201e-6
- 5
- 6.5363e-9
Water Liquid Cp (NIST Shomate)
- name
- Water Liquid Cp (NIST Shomate)
- variable
- t_k_div_1000
- max degree
- 3
- min
- 0.298
- max
- 0.5
coefficients
- 0
- -203.606
- 1
- 1,523.29
- 2
- -3,196.413
- 3
- 2,474.455
- -2
- 3.855326