Diersch, H.-J. G. ; Bauer, D. ; Heidemann, W. ; Rühaak, W. ; Schätzl, P. (2011)
Finite element modeling of borehole heat exchanger systems: Part 2. Numerical simulation.
In: Computers & Geosciences, 37 (8)
Article, Bibliographie
Abstract
Single borehole heat exchanger (BHE) and arrays of BHE are modeled by using the finite element method. Applying BHE in regional discretizations optimal conditions of mesh spacing around singular BHE nodes are derived. Optimal meshes have shown superior to such discretizations which are either too fine or too coarse. The numerical methods are benchmarked against analytical and numerical reference solutions. Practical application to a borehole thermal energy store (BTES) consisting of 80 BHE is given for the real-site BTES Crailsheim, Germany. The simulations are controlled by the specifically developed FEFLOW-TRNSYS coupling module. Scenarios indicate the effect of the groundwater flow regime on efficiency and reliability of the subsurface heat storage system.
| Item Type: | Article |
|---|---|
| Erschienen: | 2011 |
| Creators: | Diersch, H.-J. G. ; Bauer, D. ; Heidemann, W. ; Rühaak, W. ; Schätzl, P. |
| Type of entry: | Bibliographie |
| Title: | Finite element modeling of borehole heat exchanger systems: Part 2. Numerical simulation |
| Language: | English |
| Date: | 2011 |
| Journal or Publication Title: | Computers & Geosciences |
| Volume of the journal: | 37 |
| Issue Number: | 8 |
| URL / URN: | http://www.sciencedirect.com/science/article/B6V7D-51H1DM5-1... |
| Abstract: | Single borehole heat exchanger (BHE) and arrays of BHE are modeled by using the finite element method. Applying BHE in regional discretizations optimal conditions of mesh spacing around singular BHE nodes are derived. Optimal meshes have shown superior to such discretizations which are either too fine or too coarse. The numerical methods are benchmarked against analytical and numerical reference solutions. Practical application to a borehole thermal energy store (BTES) consisting of 80 BHE is given for the real-site BTES Crailsheim, Germany. The simulations are controlled by the specifically developed FEFLOW-TRNSYS coupling module. Scenarios indicate the effect of the groundwater flow regime on efficiency and reliability of the subsurface heat storage system. |
| Uncontrolled Keywords: | Borehole heat exchanger;FEFLOW;TRNSYS;Borehole thermal energy store |
| Divisions: | 11 Department of Materials and Earth Sciences > Earth Science > Geothermal Science and Technology 11 Department of Materials and Earth Sciences > Earth Science 11 Department of Materials and Earth Sciences |
| Date Deposited: | 06 Nov 2014 13:29 |
| Last Modified: | 07 Nov 2014 13:35 |
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