WorldCat Identities

Zijl, W.

Overview
Works: 19 works in 19 publications in 2 languages and 19 library holdings
Roles: Author
Publication Timeline
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Most widely held works by W Zijl
Rotterdam Brongras : een bureauonderzoek en een verkennend en karterend inventariserend veldonderzoek door middel van grondboringen by W Zijl( Book )

1 edition published in 2011 in Dutch and held by 1 WorldCat member library worldwide

Rotterdam R.H.V. Leonidas : een bureauonderzoek en een verkennend inventariserend veldonderzoek door middel van grondboringen by W Zijl( Book )

1 edition published in 2011 in Dutch and held by 1 WorldCat member library worldwide

A velocity-based approach to visco-elastic flow of rock: by W Zijl( )

1 edition published in 2005 in English and held by 1 WorldCat member library worldwide

In structural geology, viscous creep is generally recognized as the major deformation mechanism in the folding of rock layers through geological time scales of hundreds of thousands of years. Moreover, since deformation of rock salt by creep takes already place on relatively small time scales - weeks to months, say - creep is a relevant phenomenon when studying salt mining, notably the convergence of mine cavities and the land subsidence caused by it. While creep is the dominant process on relatively long time scales, elasticity plays a dominant role in processes that take place on relatively short time scales. The elastic response to a stress is a displacement; the shape of the rock is deformed instantaneously with respect to its initial shape. However, the viscous response of a rock to a stress is a relatively low velocity in the order of millimeters per months or years, say. In this paper we consider the two deformation phenomena creep and elasticity. In general, elasticity is a compressible phenomenon, while creep is incompressible. Here we approximate creep by the introduction of a negligibly small amount of compressibility, which makes creep velocity calculations similar to conventional elastic displacement calculations. Using this procedure, a standard finite element package for elasticity can be applied to viscous problems, also in combination with elasticity. The method has been demonstrated to upscaling of creep viscosities. © International Association for Mathematical Geology 2005
Forward and inverse modeling of near-well flow using discrete edge-based vector potentials: by W Zijl( )

1 edition published in 2007 in English and held by 1 WorldCat member library worldwide

Homogeneous effective permeabilities in the near-well region are generally obtained using analytical solutions for transient flow. In contrast, this paper focuses on heterogeneous permeability obtained from steady flow solutions, although extensions to unsteady flow are introduced too. Exterior calculus and its discretized form have been used as a guide to derive the system of algebraic equations. Edge-based vector potentials describing 3-D steady and unsteady flow without mass balance error stabilize the solution. After a physics-oriented introduction, relatively simple analytic examples of forward and inverse discrete modeling demonstrate the applicability. © Springer Science+Business Media B.V. 2006
Rotterdam Hoogvliet Boomgaardshoek : een bureauonderzoek en een verkennend inventariserend veldonderzoek door middel van grondboringen by W Zijl( Book )

1 edition published in 2007 in Dutch and held by 1 WorldCat member library worldwide

Ionisatie-verschijnselen in de temperatuurgrenslaag aan de schokbuisachterwand( )

1 edition published in 1973 in Dutch and held by 1 WorldCat member library worldwide

Capelle aan den IJssel, Goudenregenstraat-Narcisstraat : een bureauonderzoek en verkennend inventariserend veldonderzoek door middel van grondboringen by W Zijl( Book )

1 edition published in 2008 in Dutch and held by 1 WorldCat member library worldwide

Rotterdam Poldervaart : een bureauonderzoek en een verkennend en karterend inventariserend veldonderzoek door middel van grondboringen by W Zijl( Book )

1 edition published in 2011 in Dutch and held by 1 WorldCat member library worldwide

Rotterdam Hoogvliet Bonairepark : een bureauonderzoek en verkennend inventariserend veldonderzoek door middel van grondboringen by W Zijl( Book )

1 edition published in 2011 in Dutch and held by 1 WorldCat member library worldwide

Hoek van Holland Oranjebonnen een bureauonderzoek en een verkennend inventariserend veldonderzoek door middel van grondboringen by W Zijl( Book )

1 edition published in 2013 in Dutch and held by 1 WorldCat member library worldwide

Brielle Slagveld 19 : een verkennend inventariserend veldonderzoek door middel van proefsleuven en grondboringen by W Zijl( Book )

1 edition published in 2008 in Dutch and held by 1 WorldCat member library worldwide

The edge-based face element method for 3D-stream function and flux calculations in porous media flow: by W Zijl( )

1 edition published in 2004 in English and held by 1 WorldCat member library worldwide

We present a velocity-oriented discrete analog of the partial differential equations governing porous media flow: the edge-based face element method. Conventional finite element techniques calculate pressures in the nodes of the grid. However, such methods do not satisfy the requirement of flux continuity at the faces. In contrast, the edge-based method calculates vector potentials along the edges, leading to continuity of fluxes. The method is algebraically equivalent with the popular block-centered finite difference method and with the mixed-hybrid finite element method, but is algorithmically different and has the same robustness as the more conventional node-based velocity-oriented method. The numerical examples are computed analytically and may, therefore, be considered as an 'heuristic proof' of the theory and its practical applicability for reservoir engineering and geohydrology. © 2004 Kluwer Academic Publishers. Printed in the Netherlands
Departure of a bubble growing on a horizontal wall( )

1 edition published in 1978 in English and held by 1 WorldCat member library worldwide

Rotterdam Beverwaard tramremise zone D : een bureauonderzoek en verkennend inventariserend veldonderzoek door middel van grondboringen by W Zijl( Book )

1 edition published in 2008 in Dutch and held by 1 WorldCat member library worldwide

A direct method for the identification of the permeability field based on flux assimilation by a discrete analog of Darcy's law: by W Zijl( )

1 edition published in 2004 in English and held by 1 WorldCat member library worldwide

Inverse models to determine the permeability are generally based on existing forward models for the pressure. The permeabilities are adapted in such a way that the calculated pressures match the specified pressures in a number of points. To assimilate a priori knowledge about the flux, we introduce the 'flux assimilation method', which is based on the 'vector potential-pressure formulation' of Darcy's law. Thanks to an unconventional discretization technique - the 'edge-based face element method' - not only the specified pressures, but also specified information about the flux density can easily be assimilated. A relatively simple, but insightful analytical example illustrates the potential of this method. © 2004 Kluwer Academic Publishers
Rotterdam Hoogvliet speelplaats Vlietzone : een bureauonderzoek en verkennend inventariserend veldonderzoek door middel van grondboringen by A.V Schoonhoven( Book )

1 edition published in 2010 in Dutch and held by 1 WorldCat member library worldwide

Rotterdam Kralingse Plas : een bureauonderzoek en verkennend inventariserend veldonderzoek door middel van grondboringen by W Zijl( Book )

1 edition published in 2010 in Dutch and held by 1 WorldCat member library worldwide

Rotterdam Hoogvliet Voorweg : een bureauonderzoek en verkennend inventariserend veldonderzoek door middel van grondboringen by W Zijl( Book )

1 edition published in 2011 in Dutch and held by 1 WorldCat member library worldwide

Rotterdam IJsselmondse Randweg : een bureauonderzoek en verkennend inventariserend veldonderzoek door middel van grondboringen by W Zijl( Book )

1 edition published in 2009 in Dutch and held by 1 WorldCat member library worldwide

 
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Audience level: 0.91 (from 0.82 for Forward an ... to 1.00 for Departure ...)

Languages
Dutch (14)

English (5)