Frost1D is a one dimensional ground frost penetration analysis program. It is able to analyze multi-layered material with various temperature boundaries, convective boundaries and heat flux boundaries.

Both analytical solution for simple problems and numerical solution (finite difference method) for complex problems are available in Frost1D.

Frost1D includes four types of materials: built-in fine grained soil and coarse grained soil, general freezable material, and simple material.

Frost1D also has friendly data input user interface and convenient result graphs.

Both SI and English units are available in Frost1D.

Change log:

0.2.5 (2021-06-27)

– minor bug fixes

0.2.4 (2020-09-25)

– changed thermal conductivity units from KJ/day/m/C to W/m/C

0.2.3 (2019-03-08)

– bug fixes

0.2.2 (2018-09-28)

– bug fixes

0.2.1 (2018-09-14)

– bug fixes

0.2.0 (2018-05-01)

+ English units
– bug fixes

0.1.0 (2017-09-25)

+ analytical solution for a step change in surface temperature on uniform material
+ numerical solution for temperature boundary, convective boundary and heat flux boundary on multi-layer material
+ temperature boundaries: constant temperature or freezing/thawing index, sinusoildal temperature, step temperature, and piecewise straight line temperature
+ graphs: temperature profile, freezing/thawing front, and temperature variation at a certain depth
+ built-in fine grained soil and coarse grained soil thermal properties
+ general freezable material and simple material properties
+ pdf, svg and png image export

3 Replies to “Frost1D”

  1. I’ve downloaded your Frost 1D software for use in pavement design in Eastern Oregon where frost susceptible soils are common in the pavement subgrade. Is there a users manual or tutorial for the package?
    Is there a way to change the units from metric to English?
    If there is a fee for these items, please let me know who to call to discuss.

    Thank you,

    1. Bill,

      So far I don’t have a user’s manual ready for Frost1D.
      The analytical analysis section uses Modified Berggren equation and Neumann solution. The input parameters should be straightforward.

      The numerical analysis section uses finite difference method to analyze the frost depth. The advantage of the numerical method is it can calculate multilayered soils with different boundary condition.

      I will implement the imperial units sometime later.

      Please let me know if you have any questions about the input parameters.

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