Zobrazeno 1 - 8
of 8
pro vyhledávání: '"H. W. G. van der Steen"'
Publikováno v:
Day 2 Wed, September 18, 2019.
When key geological scenario uncertainties, captured in multiple conceptual models, are combined with continuous parameters, the evaluation of a representative sample set quickly becomes unmanageable, laborious and too time consuming to execute. A wo
Publikováno v:
Day 2 Wed, September 18, 2019.
Hydrocarbon in place volumes are often inaccurate as a result of poor representation of the reservoir structure (by means of a 3D grid), that in combination with the use of traditional saturation calculation methods, lead to erroneous hydrocarbon vol
Publikováno v:
Journal of Petroleum Science and Engineering. 78:654-663
This paper presents extensive laboratory results of unsteady state displacement of methane by super critical carbon dioxide SCO 2 in consolidated reservoir core plugs. The fluid flow of both phases is presented in terms of relative permeability using
Publikováno v:
Fluid Phase Equilibria. 295:230-236
A thermodynamically stable interface can only exist between two immiscible fluids, nonetheless in this work an “immiscible interface” between two gases (CO2–methane) has been observed and is documented within this paper. This work is the first
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 298:377-382
An optimization tool for the design of electrostatic lens systems with axial symmetry is presented. This tool is based on the second-order electrode method combined with a multivariable numerical optimization procedure. The second-order electrode met
Publikováno v:
SPIE Proceedings.
Lens optimization can be based on the very fast approximate axial potential calculation of the Second Order Electrode Method (SOEM). In this method the free optimization parameters are the physical quantities of an electrostatic lens system. The opti
Publikováno v:
Journal of Vacuum Science & Technology B: Microelectronics and Nanometer Structures. 7:651
A method for the optimization of electrostatic lenses is presented. It is applied to optimize several three‐electrode lens designs for particular applications. The free parameters of the optimization are the physical quantities describing the shape
Autor:
H. W. G. van der Steen, J. E. Barth
Publikováno v:
Journal of Vacuum Science & Technology B: Microelectronics and Nanometer Structures. 7:1886
In a previous publication the second order electrode method (SOEM) was demonstrated to give practical designs for three electrode electrostatic lenses. Here the extension of the method is presented to include optimization of multielectrode lenses. Th