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Table 4 Values of the rock properties fixed during the back analysis
From: THM modeling of hydrothermal circulation at Rittershoffen geothermal site, France
Property (unit) | Upper sediments | Lower sediments | Upper granite | Lower granite |
|---|---|---|---|---|
Porosity \(\phi _o\) (\(\%\)) | 9.0 | 9.0 | 3.0 | 0.3 |
Total specific mass \(r_0\) (kg m\(^{-3}\)) | 2390 | 2390 | 2690 | 2690 |
Biot coefficient b (–) | 0.73 | 0.90 | 0.36 | 0.36 |
Specific heat \(c_s\) (J kg\(^{-1}\) K\(^{-1}\)) | 800.0 | 800.0 | 800.0 | 800.0 |
Thermal dilation \(\alpha _0\) (10\(^{-5}\) K\(^{-1}\)) | 1.4 | 1.4 | 1.4 | 1.4 |
Heat source production \(\theta _{\text{rad}}\) (\(\upmu\)W m\(^{-3}\)) | 0.1 | 1.0 | 5.0 | 5.0 |