diff --git a/phreeqc3-doc/RELEASE.TXT b/phreeqc3-doc/RELEASE.TXT index fdc494f8..2eb55825 100644 --- a/phreeqc3-doc/RELEASE.TXT +++ b/phreeqc3-doc/RELEASE.TXT @@ -1,4 +1,25 @@ Version @PHREEQC_VER@: @PHREEQC_DATE@ + + ---------------- + August 17, 2020 + ---------------- + PHREEQC: Changes to implicit Nernst Planck calculations for electro-migration. + Concentration-oscillations in 3 cells at the column boundary are now dampened, + which improves the stability of the calculations. + + ---------------- + August 17, 2020 + ---------------- + PHREEQC: A new Basic function DEBYE_LENGTH was added to return the + value of the Debye length, typically notated kappa^-1. The value is + related to the decay of the surface potential with distance from the + surface. Theory says that the potential at distance d from the surface + is equal to psi0*exp(d/DL), where psi0 is the surface potential and DL is + the Debye length. The lengh is inversely related to ionic strength. + Example: + + 10 DL = DEBYE_LENGTH + ---------------- August 11, 2020 ---------------- @@ -10,6 +31,9 @@ Version @PHREEQC_VER@: @PHREEQC_DATE@ KINETICS_RAW, or KINETICS_MIX. Now, the correct proportional relation should be maintained if the moles in EQUILIBRIUM_PHASES or KINETICS are changed. + An error message will result if, for example, EQUILIBRIUM_PHASES is modified + to remove the phase that EXCHANGE is related to. + ---------------- June 7, 2020 ----------------