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Research Paper

TOUGH2 Mesh Generation Based on Constrained Centroidal Voronoi Tessellations for Simulation of Geothermal Heat Pump Systems

무게중심 보로노이 테셀레이션 기법을 적용한 지열냉난방시스템 시뮬레이션을 위한 TOUGH2 메쉬 개발

Seong-Kyun Kim1*
김 성균1*
1한국지질자원연구원 지질환경연구본부
* Corresponding Author
31 December 2019. pp. 639-644
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Abstract

This study presents a mesh generation technique for TOUGH2 to improve the calculation accuracy of simulations of geothermal heat pump systems using constrained centroidal Voronoi tessellations. Results showed that when the wells and pipe shapes required for the simulation were generated, the energy of the cell was reduced by matching the center and centroid of the Voronoi cell as closely as possible. The mesh produced using this method revealed that the energy of most cells was reduced to near zero, and the shape and increase/decrease ratio of the cells were improved as compared to the meshes generated using ordinary Voronoi tessellation.

Keywords
Centroidal Voronoi
Geothermal heat pump
Simulation
TOUGH2

이 연구에서는 무게중심 보로노이 테셀레이션을 이용하여 지열냉난방시스템 시뮬레이션 계산 정확도 개선을 위한 TOUGH2용 메쉬 제작기법을 제시하였다. 지열냉난방시스템의 시뮬레이션에 필요한 관정과 파이프 형태를 반영하면서도 보로노이 셀의 중점과 무게중심을 최대한 일치시켜 셀의 에너지를 감소시켰다. 이 방법을 이용하여 만들어진 메쉬는 원래의 일반적인 보로노이 테셀레이션을 이용하여 만들어진 메쉬와 비교해 대부분의 셀의 에너지가 0에 가깝게 감소했고 셀의 형태와 증감비율도 개선되는 것을 확인하였다.

키워드
무게중심 보로노이
지열냉난방시스템
시뮬레이션
TOUGH2
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Information
  • Publisher :The Korean Society of Mineral and Energy Resources Engineers
  • Publisher(Ko) :한국자원공학회
  • Journal Title :Journal of the Korean Society of Mineral and Energy Resources Engineers
  • Journal Title(Ko) :한국자원공학회지
  • Volume : 56
  • No :6
  • Pages :639-644
  • Received Date : 2019-11-28
  • Revised Date : 2019-12-09
  • Accepted Date : 2019-12-20
  • DOI :https://doi.org/10.32390/ksmer.2019.56.6.639
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