From 5431417de7c0bf1cb07448a3db051671bc05c9ad Mon Sep 17 00:00:00 2001 From: David Parkhurst Date: Fri, 30 Jul 2021 18:21:01 -0600 Subject: [PATCH] noted changes for Peng-Robinson gases and Pitzer --- RELEASE.TXT | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/RELEASE.TXT b/RELEASE.TXT index 63ccddc2..759671df 100644 --- a/RELEASE.TXT +++ b/RELEASE.TXT @@ -1,5 +1,13 @@ Version @PHREEQC_VER@: @PHREEQC_DATE@ + -------------- + July 30, 2021 + -------------- + PHREEQC: Modified the numerical method for Pitzer calculations when using + Peng-Robinson gases. The calculation of numerical derivatives was + modified to account for the sequence of calculations, particularly that + the mole fractions of gases are calculated within the molalities method. + ------------- June 14, 2021 -------------