Simulation of numerically intensive multiphase flow in porous media on advanced parallel computers using domain decomposition and multigrid methods

Thesis/Dissertation · Tue Jan 01 04:00:00 EST 1991

OSTI ID:7106670

Bhogeswara, R

Realistic simulations of multiphase and multicomponent fluid flow in oil reservoirs have been proven to be computationally intensive. In this work, techniques for simulating these processes on emerging parallel computers such as INTEL hypercubes iPSC/2 and iPSC/860 are developed. These architectures appear to offer high performance capabilities at moderate cost for reservoir simulation applications. Initial attempts were made to validate the applicability of these computers by converting the coefficient routine of the existing compositional reservoir simulator which consumes 60% of the overall CPU time. Very high parallel efficiencies are obtained with around 3% serial content which remained constant with increasing number of processors. As a step towards achieving a tenfold gain in cost per performance, a parallel linear solver was developed. This is based on a combined multigrid and domain decomposition approach; two algorithms were investigated. Results obtained on the iPSC/860 hypercube show that the performance is comparable to current mainframe supercomputers.

• Research Organization: Houston Univ., TX (United States)
• OSTI ID: 7106670
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020200* -- Petroleum-- Reserves
Geology
& Exploration
42 ENGINEERING
420400 -- Engineering-- Heat Transfer & Fluid Flow
99 GENERAL AND MISCELLANEOUS
990200 -- Mathematics & Computers
ALGORITHMS
COMPUTERIZED SIMULATION
COMPUTERS
FLOW MODELS
FLUID FLOW
GEOLOGIC DEPOSITS
HYPERCUBE COMPUTERS
MATHEMATICAL LOGIC
MATHEMATICAL MODELS
MINERAL RESOURCES
MULTIPHASE FLOW
OIL FIELDS
PARALLEL PROCESSING
PERFORMANCE
PETROLEUM DEPOSITS
PROGRAMMING
RESOURCES
SIMULATION