Zobrazeno 1 - 10
of 20
pro vyhledávání: '"E. J. Fordham"'
Publikováno v:
Measurement Science and Technology. 10:1329-1337
We demonstrate the use of a novel design of fibre-optical sensor (or `local probe') for immiscible-fluid discrimination in multi-phase flows. These probes are made from standard silica fibres with plane oblique facets polished at the fibre tip, with
Publikováno v:
Measurement Science and Technology. 10:1338-1346
Publikováno v:
Measurement Science and Technology. 10:1347-1352
Local fibre-optical sensors (or `local probes') for immiscible-fluid discrimination are demonstrated in three-phase (oil/water/gas) flows. The probes are made from standard silica fibres with plane oblique facets polished at the fibre tip, with surfa
Publikováno v:
Measurement Science and Technology. 10:N131-N135
For typical applications of the gradiomanometer in laboratory two-phase flows, we analyse major contributions to the measured differential pressure. Application for estimation of the fluid-phase volume fraction is valid only when terms representing f
Autor:
E. J. Fordham, Rogerio Tadeu Ramos
Publikováno v:
Journal of Lightwave Technology. 17:1392-1400
This paper describes several novel designs of fiberoptic sensor made from standard silica fibers with plane oblique facets polished at the fiber tip, and various surface treatments. All use the phenomenon of total internal reflection (TIR) to disting
Publikováno v:
Journal of Physics D: Applied Physics. 28:384-397
A nuclear magnetic resonance imaging method is demonstrated for measuring diffusion of a paramagnetic tracer in an aqueous gel, and the hydrodynamic dispersion of the same tracer in a porous medium. The fast inversion recovery method for determining
Publikováno v:
Journal of Magnetic Resonance, Series B. 106:1-9
This study demonstrates the use of a Bayesian statistical method for data analysis in practical flow and diffusion measurements based on pulsed-held-gradient magnetic-resonance imaging. In addition to providing estimates of both the velocity and the
Publikováno v:
Magnetic Resonance Imaging. 12:279-284
We demonstrate a variant, insensitive to eddy current effects, of an alternating pulsed field gradient technique designed to null the effect of background gradients in liquid-saturated porous media, using a 38 mm diameter sample of a natural sandston
Publikováno v:
Journal of magnetic resonance (San Diego, Calif. : 1997). 200(2)
The Driven-Equilibrium Carr-Purcell Meiboom-Gill (DECPMG) pulse sequence is a rapid method for obtaining the average ratio of longitudinal to transverse relaxation times (T(1)/T(2)) as a function of T(2). Since this is a one-dimensional experiment, t
Autor:
Timothy P.L. Roberts, T. A. Carpenter, Laurance D. Hall, E. J. Fordham, Christopher Hall, Geoffrey C. Maitland
Publikováno v:
AIChE Journal. 37:1895-1899
This paper reports on the initial technological development of nuclear magnetic resonance (NMR) imaging which was motivated primarily by applications in medicine and biology: however, increasing attention is now being given to applications to nonlivi