Influence of oil film on spectral and polarization features of S-, KA- and V-band water surface back scattering

Possibilities were studied of using a remote laser spectrophotometric method in measuring thickness of oil films on a wavy water surface with utilization of discretely tunable laser source operating at eye-safe narrow spectral range around ~ 2.1 μm. Laser spectrophotometric method is based on measuring reflection coefficient of the water surface on five probing wavelengths and finding thickness of the oil film by the quasisolution search method. It is proposed to use an optical parametric generator tunable along a wavelength in the 1.5--2.6 μm spectral range as a radiation source. Results of mathematical simulation are provided for the optical characteristics of typical oil and pure sea water with a mean square value of measurement noise of 1, 2 and 3 %. Results of mathematical simulation demonstrate that remote laser spectrophotometric method based on the quasisolution selection technique makes it possible to measure oil films with a thickness from several micrometers to ~ 130 μm with an error of no more than 30 % for measurements with noise mean sguare error of 1--3 %

Download Full-text

The impact on the reflectance in VIS of a type of crude oil film floating on the water surface

Optics Express ◽

10.1364/oe.7.000129 ◽

2000 ◽

Vol 7 (3) ◽

pp. 129 ◽

Cited By ~ 24

Author(s):

Zbigniew Otremba

Keyword(s):

Crude Oil ◽

Water Surface ◽

Oil Film ◽

The Impact

Download Full-text

BREAKUP OF OIL FILM WITH HOLES ON QUIESCENT WATER SURFACE

Modern Physics Letters B ◽

10.1142/s0217984905009985 ◽

2005 ◽

Vol 19 (28n29) ◽

pp. 1591-1594

Author(s):

H. J. ZHONG ◽

H. J. YUAN ◽

C. B. LEE

Keyword(s):

Surface Tension ◽

Flow Visualization ◽

Water Surface ◽

Velocity Fields ◽

Breakup Process ◽

Oil Film ◽

Oil Slick ◽

Flow Maps ◽

Satellite Drops ◽

Initial Stage

We experimentally investigate the breakup process of a circular oil film with a hole on water surface using PIV and flow visualization. The hole moves to the bound of the oil slick driven by surface tension, and then the slick breaks into smaller drops. Typical flow maps and velocity fields are given. It is shown that a pair of vortices forms at initial stage, the position of the vortices varies as the hole approaches the bound of the slick. Satellite drops arise when breakup occurs and the size of the satellite drops depend on the shape of the slick.

Download Full-text

The mathematical theory of capillarity. III

Proceedings of the Royal Society of London Series A - Mathematical and Physical Sciences ◽

10.1098/rspa.1961.0049 ◽

1961 ◽

Vol 260 (1303) ◽

pp. 503-509 ◽

Cited By ~ 9

Keyword(s):

Mathematical Theory ◽

Water Surface ◽

Surface Films ◽

Experimental Examination ◽

Oil Film ◽

Tensile Tester ◽

Theoretical Predictions

The theoretical predictions of parts I and II are subjected to experimental examination. The experiments are of two types: (1) very slow distortion of highly viscous surface films, the Instron tensile tester machine being used, and (2) measurement of the space attenuation of a plane ripple on a water surface covered with an oil film. Only (2) appears to be promising, but the data can be interpreted only by assuming that there exists a certain amount of horizontal slip between film and substrate.

Download Full-text

Sorption of petroleum products with natural sorbents

The Journal of Almaty Technological University ◽

10.48184/2304-568x-2020-3/1-47-52 ◽

2021 ◽

pp. 47-52

Author(s):

A. K. Iskendirova ◽

M. K. Kurmanaliev ◽

M. Sh. Suleimenova

Keyword(s):

Water Surface ◽

Petroleum Products ◽

Natural Sorbents ◽

Oil Film ◽

Sorption Time

This article presents the results of a study of cleaning the water surface from contamination with petroleum products. Kulantaussky vermiculite, the birthplace of the Turkestan region, was studied as a sorbent. Studies have shown that the modified vermiculite is able to retain the sorbed oil up to 2 days after the expiration of the main sorption time (4 hours). It is established that the oil capacity depends on the thickness of the oil film, the sorption time and the amount of the sorbent taken.

Download Full-text