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test_cases:seven [2014/12/19 11:14] grenier |
test_cases:seven [2014/12/22 14:17] grenier |
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- | Advection with constant velocity is here added to conduction and phase change. | + | Heat advection via constant |
- | The paper Kurylyk et al. 2014 describes at depth the analytical solutions | + | The paper Kurylyk et al. (2014, AWR) details several alternative |
- | Refer to Analytical solutions for benchmarking cold regions subsurface water flow and energy transport models: One-dimensional soil thaw | + | A presentation of the TH1 Case was made by Barret Kurylyk during the kick off meeting ({{: |
- | with conduction and advection by B. Kurylyk, J. McKenzie, K. MacQuarrie, C. Voss in Advances in Water Resources 70 (2014) 172–184 | + | |
- | The presentation | + | Benchmark cases 2 and 3 recommended |
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+ | where X is the depth to the thawing front, α is the thermal diffusivity, | ||
+ | Benchmark 1 (Neumann solution) recommended by Kurylyk et al 2014 is an option to complement the Lunardini case provided in the InterFrost project as T1. For clarification purposes, it should be noted that the initial temperature (Ti) term in the Neumann solution is expressed as the number of degrees below 0°C (i.e. it is a positive number). | ||
+ | **TH1 Test Case** | ||
- | {{ : | + | The initially uniform temperature is at 0°C. This condition simplifies the energy balance at the thawing front by ensuring that there is no thermal gradient (or conductive flux) below the thawing front. The specified surface temperature is above 0°C and hence induces thaw. The water is advected through the entire medium, but the divergence of the advective flux is zero below the thawing front due to the uniform thermal conditions. |
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+ | Initial and boundary conditions: | ||
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+ | Parameter set: | ||
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+ | The analytical solutions of Kurylyk et al 2014 are accessible here as as xls {{: | ||
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+ | The approach used for SUTRA code is summed up in two figures from Kurylyk et al 2014 as a source of inspiration. They provide the simulated domain and the approach for the freezing curve function in order to approximate the step function with a linear curve: | ||
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