NEA-0682 H2OTP.
H2OTP, Temperature Dependent and Pressure Dependent Thermodynamics Properties, Transport Properties of H2O
NAME OR DESIGNATION OF PROGRAM, COMPUTER, DESCRIPTION OF PROBLEM OR FUNCTION, METHOD OF SOLUTION, RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM, TYPICAL RUNNING TIME, UNUSUAL FEATURES OF THE PROGRAM, RELATED AND AUXILIARY PROGRAMS, STATUS, REFERENCES, MACHINE REQUIREMENTS, LANGUAGE, OPERATING SYSTEM UNDER WHICH PROGRAM IS EXECUTED, OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS, NAME AND ESTABLISHMENT OF AUTHOR, MATERIAL, CATEGORIES
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| Program name | Package id | Status | Status date |
|---|---|---|---|
| H2OTP | NEA-0682/01 | Tested | 18-FEB-1985 |
Machines used:
| Package ID | Orig. computer | Test computer |
|---|---|---|
| NEA-0682/01 | BURROUGHS 7800 | DEC VAX 11/780 |
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3. DESCRIPTION OF PROBLEM OR FUNCTION
H2OTP is a FORTRAN subroutine for the calculation of a full set of light-water thermodynamic and transport properties after the 1967 IFC recommendations for industrial use are calculated.
The following specific parameters can be calculated for steam- or water or saturated-conditions:
enthalpy, energy, volume, entropy
Gibbs function, Helmholtz function
relative isobaric volume expansion
isobaric and isochoric heat capacity
isentropic exponent, sonic velocity
relative isothermal compressibility
Joule and Joule-Kelvin coefficient
heat of evaporation
saturation temperature given by pressure
saturation pressure given by temperature
surface tension
dynamic and kinematic viscosity
thermal conductivity and Prandtl number
The independent variables are temperature and pressure, British or S.I. units.
H2OTP is a FORTRAN subroutine for the calculation of a full set of light-water thermodynamic and transport properties after the 1967 IFC recommendations for industrial use are calculated.
The following specific parameters can be calculated for steam- or water or saturated-conditions:
enthalpy, energy, volume, entropy
Gibbs function, Helmholtz function
relative isobaric volume expansion
isobaric and isochoric heat capacity
isentropic exponent, sonic velocity
relative isothermal compressibility
Joule and Joule-Kelvin coefficient
heat of evaporation
saturation temperature given by pressure
saturation pressure given by temperature
surface tension
dynamic and kinematic viscosity
thermal conductivity and Prandtl number
The independent variables are temperature and pressure, British or S.I. units.
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4. METHOD OF SOLUTION
The data source is the 1967 IFC formulations for Industrial use. The nature of this formulation is of the form of a highly complex mathematical expression for the Gibbs (or Helmholz) function dependent on the temperature and pressure (spc. volume). The thermodynamic quantities are derived from this basic function as simple functions of the derivatives in temperature and pressure up to the second order of differentiation.
The transport properties are calculated from the recommended expressions in the 1967 IFC formulation. These expressions are numerical approximations to the experimental results. The set of transport properties calculations presented by the 1967 IFC formulation is not complete, so it has been found necessary to complement with some approximations taken from ref. Risoe-M-669 below, and with some approximations made especially for this code.
The data source is the 1967 IFC formulations for Industrial use. The nature of this formulation is of the form of a highly complex mathematical expression for the Gibbs (or Helmholz) function dependent on the temperature and pressure (spc. volume). The thermodynamic quantities are derived from this basic function as simple functions of the derivatives in temperature and pressure up to the second order of differentiation.
The transport properties are calculated from the recommended expressions in the 1967 IFC formulation. These expressions are numerical approximations to the experimental results. The set of transport properties calculations presented by the 1967 IFC formulation is not complete, so it has been found necessary to complement with some approximations taken from ref. Risoe-M-669 below, and with some approximations made especially for this code.
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5. RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM
The temperature range is 0.01 deg. C to 800 deg. C and the pressure range is 610 N/m**2 to 500.0E5 (1000.0E5) N/m**2.
The use of double-precision words with a mantissa length of 72 bits, corresponding to approximately 22 decimal digits on the Burroughs B-7800 computer of Riso National Laboratory, is essential and has made it possible to use numerical differentiation. Computers of other makes with a similar or higher accuracy can be applied.
The temperature range is 0.01 deg. C to 800 deg. C and the pressure range is 610 N/m**2 to 500.0E5 (1000.0E5) N/m**2.
The use of double-precision words with a mantissa length of 72 bits, corresponding to approximately 22 decimal digits on the Burroughs B-7800 computer of Riso National Laboratory, is essential and has made it possible to use numerical differentiation. Computers of other makes with a similar or higher accuracy can be applied.
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6. TYPICAL RUNNING TIME
The calculations are slow and are meant as a reference base. The CPU-time per call of the subroutine H2OTP is approximately 0.025 s on the Burroughs B-7800.
The calculations are slow and are meant as a reference base. The CPU-time per call of the subroutine H2OTP is approximately 0.025 s on the Burroughs B-7800.
NEA-0682/01
NEA-DB executed the test case on VAX-11/780 in 1.1 sec. of CPU time.[ top ]
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10. REFERENCES
- H. Schmidt,
Properties of Water and Steam in SI-Units,
VDI, Verein Deutscher Ingenieure, Springer 1969.
- Thermodynamic and Transport Properties of Steam,
ASME, American Society of Mechanical Engineers, 1967.
- M. Hjelm-Hansen,
Polynomial Approximation of Thermodynamic Properties of Light
Water,
Risoe-M-669, December 1967.
- H. Schmidt,
Properties of Water and Steam in SI-Units,
VDI, Verein Deutscher Ingenieure, Springer 1969.
- Thermodynamic and Transport Properties of Steam,
ASME, American Society of Mechanical Engineers, 1967.
- M. Hjelm-Hansen,
Polynomial Approximation of Thermodynamic Properties of Light
Water,
Risoe-M-669, December 1967.
NEA-0682/01, included references:
- F.W. Cortzen:H2OTP, "A Subroutine in FORTRAN for a Full Set of Light-Water
Thermodynamic and Transport Properties after the 1967 IFC
Recommendations for Industrial Use"
Risoe-M-1844 (March 1976)
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NEA-0682/01
| File name | File description | Records |
|---|---|---|
| NEA0682_01.003 | H2OTP INFORMATION FILE | 41 |
| NEA0682_01.004 | H2OTP SOURCE | 3411 |
| NEA0682_01.005 | H2OTP TEST CASE OUTPUT | 144 |
Keywords: compressible flow, enthalpy, entropy, heat flow, steam, thermal conductivity, thermodynamic properties, viscosity, water.