/[ascend]/trunk/models/johnpye/fprops/ammonia.c
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Revision 1996 - (view) (download) (as text) (annotate) - [select for diffs]
Modified Thu Feb 5 09:42:42 2009 UTC (13 years, 4 months ago) by jpye
File length: 15261 byte(s)
Diff to previous 1922
Added acentric factor to HelmholtzData.
Working on adding calculation of saturation curve using Maxwell phase-equilibrium condition (per IAPWS95).

Revision 1922 - (view) (download) (as text) (annotate) - [select for diffs]
Modified Fri Oct 3 07:09:15 2008 UTC (13 years, 9 months ago) by jpye
File length: 15198 byte(s)
Diff to previous 1904
Checked u,h derivatives with ammonia, nitrogen, hydrogen, all appear to be OK
and match finite difference estimates.

Revision 1904 - (view) (download) (as text) (annotate) - [select for diffs]
Modified Sat Sep 27 03:32:21 2008 UTC (13 years, 9 months ago) by jpye
File length: 15061 byte(s)
Diff to previous 1889
Removed redundant HelmholtzExpTerm, and corrected nitrogen.c to use
HelmholtzGausTerm instead.

Revision 1889 - (view) (download) (as text) (annotate) - [select for diffs]
Modified Mon Sep 22 10:19:52 2008 UTC (13 years, 9 months ago) by jpye
File length: 15096 byte(s)
Diff to previous 1883
Fixed little error with nitrogen after last changes.

Revision 1883 - (view) (download) (as text) (annotate) - [select for diffs]
Modified Thu Sep 18 13:50:28 2008 UTC (13 years, 9 months ago) by jpye
File length: 15032 byte(s)
Diff to previous 1877
All tests for ammonia pass to within 5.5% (h, u, s, a, p).
Remaining error needs further investigation; it looks that REFPROP's cp0 is not agreeing with Tillner-Roth
but this needs to be double-checked.

Revision 1877 - (view) (download) (as text) (annotate) - [select for diffs]
Modified Thu Sep 18 05:38:37 2008 UTC (13 years, 9 months ago) by jpye
File length: 14432 byte(s)
Diff to previous 1874
Reverted ammonia cp0 coefficients to calculated values, rather than hacky curvefit values.

Revision 1874 - (view) (download) (as text) (annotate) - [select for diffs]
Modified Thu Sep 18 04:27:16 2008 UTC (13 years, 9 months ago) by jpye
File length: 14860 byte(s)
Diff to previous 1872
Added some GPL headers, fixing water helm_ideal coefficients.

Revision 1872 - (view) (download) (as text) (annotate) - [select for diffs]
Modified Wed Sep 17 08:18:41 2008 UTC (13 years, 9 months ago) by jpye
File length: 14102 byte(s)
Diff to previous 1865
Worked out that errors in helmholtz_a are linear in T... what to do?

Revision 1865 - (view) (download) (as text) (annotate) - [select for diffs]
Modified Mon Sep 15 08:40:14 2008 UTC (13 years, 9 months ago) by jpye
File length: 13993 byte(s)
Diff to previous 1863
Still working on fixing helmholtz_a.

Revision 1863 - (view) (download) (as text) (annotate) - [select for diffs]
Modified Mon Sep 15 03:12:29 2008 UTC (13 years, 9 months ago) by jpye
File length: 13931 byte(s)
Diff to previous 1861
Added tests for Helmholtz energy, still failing.

Revision 1861 - (view) (download) (as text) (annotate) - [select for diffs]
Modified Sun Sep 14 08:37:50 2008 UTC (13 years, 9 months ago) by jpye
File length: 13770 byte(s)
Diff to previous 1860
Fix offsets for u, h.
Still need to fix entropy routines.

Revision 1860 - (view) (download) (as text) (annotate) - [select for diffs]
Modified Sun Sep 14 08:00:29 2008 UTC (13 years, 9 months ago) by jpye
File length: 13768 byte(s)
Diff to previous 1859
Comments about difference in cp0.

Revision 1859 - (view) (download) (as text) (annotate) - [select for diffs]
Modified Sun Sep 14 07:22:39 2008 UTC (13 years, 9 months ago) by jpye
File length: 13295 byte(s)
Diff to previous 1857
Fixed error in helm_ideal_tau formula.

Revision 1857 - (view) (download) (as text) (annotate) - [select for diffs]
Modified Thu Sep 11 14:46:51 2008 UTC (13 years, 9 months ago) by jpye
File length: 13217 byte(s)
Diff to previous 1855
p, u, h working for nitrogen, still problems with s.

Revision 1855 - (view) (download) (as text) (annotate) - [select for diffs]
Modified Thu Sep 11 13:50:55 2008 UTC (13 years, 9 months ago) by jpye
File length: 12972 byte(s)
Diff to previous 1850
Fixed evaluation of cp0 for both ammonia and nitrogen now.

Revision 1850 - (view) (download) (as text) (annotate) - [select for diffs]
Modified Tue Sep 2 06:56:47 2008 UTC (13 years, 10 months ago) by jpye
File length: 12818 byte(s)
Diff to previous 1847
Added ideal cp0 values to test data and added
calculation function for this. Works for nitrogen 
but not for ammonia.

Revision 1847 - (view) (download) (as text) (annotate) - [select for diffs]
Modified Mon Sep 1 05:42:21 2008 UTC (13 years, 10 months ago) by jpye
File length: 8027 byte(s)
Diff to previous 1844
Split out ideal curves from helmholtz.c.

Revision 1844 - (view) (download) (as text) (annotate) - [select for diffs]
Modified Sat Aug 30 07:33:11 2008 UTC (13 years, 10 months ago) by jpye
File length: 8019 byte(s)
Diff to previous 1840
Cleaned up helmholtz_resid_del, seems to be fixed now.

Revision 1840 - (view) (download) (as text) (annotate) - [select for diffs]
Modified Fri Aug 29 03:52:04 2008 UTC (13 years, 10 months ago) by jpye
File length: 8147 byte(s)
Diff to previous 1838
Fixed test data for ammonia p,h,s: agreement to 0.09% for all values.

Revision 1838 - (view) (download) (as text) (annotate) - [select for diffs]
Modified Thu Aug 28 08:32:29 2008 UTC (13 years, 10 months ago) by jpye
File length: 10216 byte(s)
Diff to previous 1835
Added 'exponential' terms for nitrogen correlation (still testing).

Revision 1835 - (view) (download) (as text) (annotate) - [select for diffs]
Modified Mon Aug 25 08:18:23 2008 UTC (13 years, 10 months ago) by jpye
File length: 10178 byte(s)
Diff to previous 1833
Checked in generalised version of ideal gas component.
Working on adding the 'exponential' term for the Nitrogen correlation.

Revision 1833 - (view) (download) (as text) (annotate) - [select for diffs]
Added Fri Aug 22 07:26:09 2008 UTC (13 years, 10 months ago) by jpye
File length: 9722 byte(s)
Converted ammonia data and tests into a separate file.

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john.pye@anu.edu.au
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