History of HYDROTHERM Programs
Version ht_wdh is released (February 2020)
ht_wdh is a specialized extension of version 3 of HYDROTHERM which implements the dynamic-permeability model of Weis and others (2012, Science, v. 338, p. 1613-1616) and was used by Coulon and others (2017, JVGR, v. p. 98-108). Version 3.2.0 remains the default for applications that do not require this specialized capability.
Version 3.2.0 is released (February 2016)
Modifications to Version 3.1.1 include a number of bug fixes:
- In Version 3.1.1, the Newton-Raphson iteration stops when the pressure (p)-enthalpy (h) conditions go beyond the limits of the lookup table. This stops the entire simulation. Version 3.2.0 cuts the time step size and restarts the Newton-Raphson iteration under these circumstances. (This is probably the most important single fix; this bug had affected many HYDROTHERM users.)
- In Version 3.1.1, at a new simulation period, new values of p, h, and/or T could be assigned only to boundary nodes that are designated to have constant p-h values. In Version 3.2.0, new values of p, h, and/or T can be assigned to any active node at the start of a new simulation period.
- Version 3.1.1 sometimes does not run for large 3-D grids. This problem is fixed in Version 3.2.0.
- For 3D models, the SSOR solution method is disabled in Version 3.1.1. This solution method is enabled in Version 3.2.0.
- Version 3.2.0 also fixes some minor output printing bugs.
The following capabilities were added to Version 3.2.0:
- The maximum number of rock types is increased to 999. This requires preparing the data input file in the VER3.2 format. (See readme.txt file included with download.)
- Version 3.2.0 accepts the following data input file formats: VER3.2 (new), VER3 (for Hydrotherm versions 3, 3.1.0 and 3.1.1) and VER2 (for Hydrotherm version 2).
Version 3.1.1 is released (July 2011)
Modifications include fixing a bug in the calculation of the cell radii squared for cylindrical coordinates, correcting the test for iteration limit in the GMRES solver, fixing an error message format, replacing a real exponent operation with an integer exponent in the steam table calculation, and fixing a formatting error for well sources in the intermediate data file of HTI.
Version 3.1.0 is released (Mar 2008)
Initial release of version 3 of the HYDROTHERM and HYDROTHERM INTERACTIVE programs.
Documentation of Version 3 is released as a pdf file (Mar 2008)
Guide to the Revised Ground-Water Flow and Heat Transport Simulator: HYDROTHERM -- Version 3
by Kenneth L. Kipp, Jr., Paul A. Hsieh, and Scott R. Charlton
U.S. Geological Survey
Techniques and Methods 6-A25, 160 p.
Version 2.2 is released (Jun 1997)
Modifications include an improved upstream weighting routine that eliminates previous convergence problems that occurred as the saturation of a phase approached its residual saturation and the phase became immobile. The Newton-Raphson convergence criteria were also modified. See the "Dev_hist" file included with this distribution for a more detailed description of the modifications.
Version 2.1 is released (Jan 1997)
Incorporates a new method for defining the problem domain and the distribution of rock properties; all rock properties can vary in space by rock type and as functions of temperature; parameter values may be input with a choice of units of measure (SI, cgs, etc.); comment lines may be used in the input file; a new menu-oriented visualization program, HTgnu, is provided which displays HYDROTHERM output using the public-domain graphics program Gnuplot. The modifications made since the release of Version 1.1 are described in the "Dev_hist" file and in the documentation included with this distribution.
Version 1.2 is released (Dec 1994)
Added three new options for defining initial temperature distributions, added a new shell script named MakeHT to compile HYDROTHERM, added version control, included an interface to the Silicon Graphics visualization program Explorer, and introduced a new method for calculating fluid density and viscosity between nodes. These modifications made since the release of Version 1.1 are described in a two-page flyer dated December 27, 1994.
Version 1.1 is released (1994)
Documentation: The computer model HYDROTHERM, A three-dimensional finite-difference model to simulate ground-water flow and heat transport in the temperature range of 0 to 1,200 °C: by D.O. Hayba and S.E. Ingebritsen, U.S. Geological Survey Water-Resources Investigations Report 94-4045, 1994, 85 p.
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