fnctId=thesis,fnctNo=16
평판형 수압파쇄 균열을 통과하는 다공질유동 특성에 관한 DNS 해석 연구
- 링크
- http://dx.doi.org/10.6112/kscfe.2016.21.4.019
- 작성자
- 김동현
- 저자
- 신창훈, 박원규
- 발행사항
- 한국전산유체공학회지, Vol. 21, No. 4, pp.19-27
- 발행일
- 2016-12
- 국문초록
- 영문초록
- The flow analyses through a porous hydraulic fractures is among the most important tasks in recently developed shale reservoirs but is rendered difficult by non-Darcy effects and geometric changes in the hydraulic fractures during production. In this study, several Computational Fluid Dynamics(CFD) models of hydraulic fractures, with a simple shape such as that of parallel plates, filled with proppants were built. Direct Numerical Simulation(DNS) analyses were then carried out to examine the flow loss characteristics of the fractures. The hydraulic diameters for the simulation models were calculated using the DNS results, and then they were compared with the results from Kozeny’s definition of hydraulic diameter which is most widely used in the flow analysis field. Also, the characteristic parameters based on both hydraulic diameters were estimated for the investigation of the flow loss variation features. Consequently, it was checked in this study that the hydraulic dieter based on Kozeny’s definition is not accordant to the results from the DNS analyses, and the case using the CFD results exhibits f·Re robustness like general pipe flows, whereas the other case using Kozeny’s definition doesn’t. Ultimately, it is expected that discoveries reported in this study would help further porous flow analyses such as hydraulic fracture flows.
- 일반텍스트
- 첨부파일