75. june 8 thc processes in salt salt-stauffer

1. Thermo-Hydro-Chemical
Coupling in Salt
Phil Stauffer
Los Alamos National Laboratory
(0) WHY the given process model is important to PA
(1) Integration progress made during FY16
(2) HOW the process model can be coupled to the GDSA-PA
framework in FY17 and beyond.

2. 2
Thermo-Hydro-Chemical
Coupling in Salt
• (0) WHY the given process model is important to PA
Short term evolution of water in backfill
Strong feedback of water on consolidation
Dehydration of ubiquitous impurities
Generation of acid vapors (HCl)

3. 3
(1) Integration progress made during FY16
LANL and SNL working to add capability to PFLOTRAN based on
FEHM experience with code validation tests
Thermo-Hydro-Chemical
Coupling in Salt
• Given a constant flow rate we compared the
FEHM solution to an analytical solution for
water removal using the holding capacity of
20ºC air and the air-flow rate
• FEHM and PFLOTRAN successfully dry out
the matrix water and remove the water in
vapor form

4. 4
Thermo-Hydro-Chemical
Coupling in Salt
(2) HOW the process model can be coupled to the GDSA-PA framework in
FY17 and beyond.
A) We envision that the current coupled processes could be added to
PFLOTRAN in the next years to allow our numerical techniques to be
performed in massive parallel on a UFD standard code.
B) Possibility to reduce the total number of process calculations based
on results of planned field testing.

5. 5
Thermo-Hydro-Chemical
Coupling in Salt
Thanks

6. 6
Lightning Goals
3:50 – 5:40 pm, Wednesday, June 8 – Rm. 1243
OBJECTIVE: Facilitate the integration of UFD process modeling with the GDSA
Performance Assessment Model. During this session we will review information about
14 process models, to be given in a series of five-minute “lightning” talks that
encompass:
(1) Integration progress made during FY16
(2) How the process model can be coupled to the GDSA-PA framework in FY17 and
beyond. (Response surfaces are NOT the preferred coupling method. Direct
coupling or reduced-order mechanistic models (ROMs) are preferred.)
GOAL: The outcome of this session is envisioned to be a tentative scope/timeline for
integration of process models with GDSA-PA, with an emphasis on FY17 workscope.

7. 7
 Hi All,
 The Integration Session at the 2015 UFD June Working Group meeting was quite successful, and we’ve made good
progress through the year (which we will report upon at this year’s meeting). The five-minute LIGHTNING talks were
a particular favorite of the DOE customer and various managers! (See attached presentation excerpt for a list of last
year’s talks.)
 Based on our ongoing success and the importance of this effort to our DOE customer, we wish to hold another
such session this June to help formulate plans for ongoing and new integration during FY2017. We already have
some Lightning talks in mind but in order to choose the best candidates for further integration between Performance
Assessment (PA) and Process Modeling, we (Dave Sevougian, Yifeng Wang, Carlos Jove-Colon, Kevin McMahon,
Bob MacKinnon) are again requesting your input. Our request goes beyond just Crystalline and Argillite, as we
would like to include all repository concepts in the modeling integration, including Salt, Deep Borehole, and Defense
Repository.
 Specifically, we request that by April 29th you revise your old Model Integration Templates in Track Changes to
indicate progress, changes, and new ideas for integrating with PA (email back to me). Also, if you’d like to provide a
completely new template/new idea, we welcome that. (WIPP folks may want to contact Glenn Hammond in this
regard.)
 I’ve attached all the pertinent info from the GDSA Deliverable of FY2015. This attached file has a blank model
template, as well as all the filled-out model templates provided by you last year. In addition, it includes the current
version of the Model Integration Table (current as of the deliverable date)---feel free to comment on it as you see fit.
 Thanks for your help in this matter and once we receive the updated templates (or your indication that nothing has
changed), we will finalize the schedule for the Lightning Talks and let you know if you’ve been picked to “come on
down”. I’ve attached the latest draft of the June Working Group Meeting schedule. Note that the Integration Session
is the same time/day as last year, so mark your calendars (Wednesday, 3:50 pm)! It should be fun. J
 If you have any questions, please feel free to contact me. Or, if I’ve forgotten to cc someone, please feel free to
forward this e-mail.

March 2016