Parallel eigenanalysis of multiaquifer systems
نویسندگان
چکیده
منابع مشابه
Parallel eigenanalysis of multiaquifer systems
Finite element discretizations of flow problems involving multiaquifer systems deliver large, sparse, unstructured matrices, whose partial eigenanalysis is important for both solving the flow problem and analysing its main characteristics. We studied and implemented an effective preconditioning of the Jacobi–Davidson algorithm by FSAI-type preconditioners. We developed efficient parallelization...
متن کاملEigenanalysis-based task mapping on parallel computers with cellular networks
Through eigenanalysis of communication matrices, we develop a new objective function formulation for mapping tasks to parallel computers with cellular networks. This new formulation significantly speeds up the solution process through consideration of the symmetries in the supply matrix of a network and a transformation of the demand matrix of any application. The extent of the speedup is not e...
متن کاملAgeing Orders of Series-Parallel and Parallel-Series Systems with Independent Subsystems Consisting of Dependent Components
In this paper, we consider series-parallel and parallel-series systems with independent subsystems consisting of dependent homogeneous components whose joint lifetimes are modeled by an Archimedean copula. Then, by considering two such systems with different numbers of components within each subsystem, we establish hazard rate and reversed hazard rate orderings between the two system lifetimes,...
متن کاملRepresentation of Multiaquifer Wells in MODFLOW
Multiaquifer wells, i.e. wells that are open across more than one aquifer, can have a profound effect on the hydraulics of the groundwater system. They change the physical system by acting as very permeable tubes that establish direct hydraulic links between nonadjacent strata. The inclusion of a multiaquifer well in a numerical model of groundwater flow also changes the governing equations. Se...
متن کاملGradient Eigenanalysis Onnested Finite
The eecient computation of the leftmost eigenpairs of the generalized symmetric eigenproblem Ax = Bx by a de-ation accelerated conjugate gradient (DACG) method may be enhanced by an improved estimate of the initial eigenvectors obtained with a multigrid (MG) type approach. The DACG algorithm essentially optimizes the Rayleigh quotient in subspaces of decreasing size B-orthogonal to the eigenvec...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: International Journal for Numerical Methods in Engineering
سال: 2005
ISSN: 0029-5981,1097-0207
DOI: 10.1002/nme.1341