Numerical Consistency of ES_StableIF97 Dynamic Viscosity Functions

ES_StableIF97 dynamic viscosity functions are based on IAPWS-IF97-Vis 2008 edition.

In the IAPWS-IF97-Vis document, the following table is provided for computer-program verification.

The sample points are temperature and density given, while the ES_StableIF97 does not have viscosity functions with temperature and density given.

Therefore, the internal subroutine of ES_StableIF97 for dynamic viscosity calculation with temperature and density given were used for the consistency check and the results of the internal subroutine are as below.

T (K)

Rho (kg/m3)

Myu (Pa-s x 10^(-6))

298.15

998

889.735100149805

298.15

1200

1437.64946668839

373.15

1000

307.883622341523

433.15

1

14.5383244857784

433.15

1000

217.685358265104

873.15

1

32.6192869739805

873.15

100

35.8022617218748

873.15

600

77.4301952272825

1173.15

1

44.2172445147164

1173.15

100

47.640433081067

1173.15

400

64.1546078483615

Consequently, the consistency of ES_StableIF97 dynamic viscosity functions are OK for IAPWS-IF97-Vis 2008 edition.

 


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