Smoothed particle hydrodynamics simulation of fluid flow in rock fractures
2013 (English)In: Rock Characterisation, Modelling and Engineering Design Methods: Proceedings of the 3rd ISRM SINOROCK 2013 Symposium, 2013, 437-443 p.Conference paper (Refereed)
The process of fluid flow in rock fractures involves complicated dynamical behavior of fluids,and its modeling is a challenge to numerical methods. In this paper, the Smoothed Particle Hydrodynamics(SPH), a particle method based on Lagrangian formulation, is employed to simulate the fluid flow in rockfractures by solving the Navier-Stokes equations directly. Firstly, the SPH method and the boundary treatmentmethod used in this simulation were introduced and the computer code of SPH was developed and validated bya series of numerical benchmark tests with analytical solutions. Then simulations were carried out to investigatethe fluid flow both in single fractures and intersected fractures, with and without considering effects of surfaceroughness. The results of the simulations are discussed and compared with the analytical solution by using theCubic law derived from the Reynolds equation. The results show that in both of rough single fractures andfracture intersections, although the relationship between mean velocity and the Reynolds number is still linear,the solutions by using Cubic law overestimated the mean fluid velocity with increasing the Reynolds number,indicating possible underestimate of travel time of mass transport in the fracture network models.
Place, publisher, year, edition, pages
2013. 437-443 p.
fluid flow; rock fractures;SPH
Engineering and Technology
Research subject Järnvägsgruppen - Infrastruktur
IdentifiersURN: urn:nbn:se:kth:diva-126863ISI: 000342685900073ScopusID: 2-s2.0-84880121104OAI: oai:DiVA.org:kth-126863DiVA: diva2:644482
The 3rd ISRM Sinorock Symposium - Rock Characterisation, Modelling and Engineering Design Methods, Shangaï : China, 18 - 20 June 2013
QC 201310072013-08-302013-08-222014-11-06Bibliographically approved