Multigrid preconditioned conjugate gradients for the numerical simulation of groundwater flow on the Cray T3D

Conference · Thu Sep 01 00:00:00 EDT 1994

OSTI ID:10118787

Ashby, S F; Falgout, R D; Smith, S G ^[1]; Fogwell, T W ^[2]

---

1. Lawrence Livermore National Lab., CA (United States)
2. International Technology Corp., Martinez, CA (United States)

This paper discusses the numerical simulation of groundwater flow through heterogeneous porous media. The focus is on the performance of a parallel multigrid preconditioner for accelerating convergence of conjugate gradients, which is used to compute the hydraulic pressure head. The numerical investigation considers the effects of enlarging the domain, increasing the grid resolution, and varying the geostatistical parameters used to define the subsurface realization. The results were obtained using the PARFLOW groundwater flow simulator on the Cray T3D massively parallel computer.

• Research Organization: Lawrence Livermore National Lab., CA (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 10118787
• Report Number(s): UCRL-JC-118622; CONF-950420-17; ON: DE95006803
• Resource Relation: Conference: International conference on mathematics and computations, reactor physics, and environmental analyses,Portland, OR (United States),30 Apr - 4 May 1995; Other Information: PBD: Sep 1994
• Country of Publication: United States
• Language: English

Related Subjects

99 GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE
54 ENVIRONMENTAL SCIENCES
GROUND WATER
FLUID FLOW
COMPUTER CALCULATIONS
NUMERICAL SOLUTION
MESH GENERATION
HYDROLOGY
FLUID-STRUCTURE INTERACTIONS
990200
540210
MATHEMATICS AND COMPUTERS
BASIC STUDIES