Wires In Water Research Articles

Theoretical Analysis of the Stability of Vapor Film in Subcooled Film Boiling on a Horizontal Wire.

Linear stability analysis of a thin vapor film in subcooled film boiling on a horizontal cylinder is reported. The effects of liquid inertia, vapor viscosity and compressibility, and heat transfer were taken into account. Theoretical predictions of the heat transfer coefficient at the neutral stability point were compared with experimental data at the minimum-heat-flux point that was obtained during rapid quenching of thin horizontal wires in water and ethanol. At high liquid subcooling, the experimental value was 60% of the theoretical prediction irrespective of the wire diameter and quenching liquid. This difference was considered to be due to the nonuniformity of the vapor film which was neglected in the theoretical analysis

The relative effects of hot-dip galvanizing and electrodeposited zinc on the fretting fatigue behaviour of roping steel wires in sea water : Waterhouse, R.B., Takeuchi, M. and van Gool, A.P.Trans. Inst. Met. Finish. Aug. 1989 67, (3), 63–66

The relative effects of hot-dip galvanizing and electrodeposited zinc on the fretting fatigue behaviour of roping steel wires in sea water : Waterhouse, R.B., Takeuchi, M. and van Gool, A.P.Trans. Inst. Met. Finish. Aug. 1989 67, (3), 63–66

Voltage Deterioration of XLPE Wires in Water under Gamma Ray Irradiation

Three types of cross-linked polyethyline (XLPE) wire were developed for insulation of internal pump motors (wet type) used in an advanced boiling water reactor. By applying gamma ray irradiation of 10/sup 4/ to 10/sup 6/ Gy and electric stress in hot water simultaneously or sequentially, the effect of gamma ray irradiation is examined. The effect of combined stresses in a large scale functional test is also described. It is proved that the gamma ray irradiation less than 10/sup 6/ Gy does not deteriorate the properties of the insulation of the wires. In the irradiational environment of 5*10/sup 4/ Gy where the internal pump motor is served, it is concluded that the wires have sufficient reliability. >

Voltage deterioration of XLPE wires in water under gamma ray irradiation

Three types of cross-linked polyethyline (XLPE) wire were developed for insulation of internal pump motors (wet type) used in an advanced boiling water reactor. By applying gamma ray irradiation of 10/sup 4/ to 10/sup 6/ Gy and electric stress in hot water simultaneously or sequentially, the effect of gamma ray irradiation is examined. The effect of combined stresses in a large scale functional test is also described. It is proved that the gamma ray irradiation less than 10/sup 6/ Gy does not deteriorate the properties of the insulation of the wires. In the irradiational environment of 5*10/sup 4/ Gy where the internal pump motor is served, it is concluded that the wires have sufficient reliability.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">&gt;</ETX>

The Effect of Electric Field on the Crazing of Enameled Wires in Water

The Effect of Electric Field on the Crazing of Enameled Wires in Water

Temperatur und Druck explodierender Drähte beim Verdampfungsbeginn / Temperature and Pressure of Exploding Wires at the Onset of Vaporization

Results of comparative investigations of the thermodynamic states of exploding wires in air and water under different pressures based on time correlated electrical and optical measurements are presented. From the energy input and from the "action integral", respectively, the time behaviour of the temperature up to the beginning of vaporization can be calculated with sufficient accuracy. Inbedding the wires in water especially under high static pressures leads to a remarkable increase of energy input up to the beginning of vaporization. In this way temperatures of more than 8000 K at homogenious conditions and solid state density could be realized

Boiling from small cylinders

Heat transfer is observed as a function of temperature on small horizontal wires in water and four organic liquids. When the wire radius is sufficiently small, the hydrodynamic transitions in the boiling curve disappear and the curve becomes monotonie. Three modes of heat removal are identified for the monotonie curve and described analytically: a natural convection mode, a mixed film boiling and natural convection mode, and a pure film boiling mode. Nucleate boiling does not occur on the small wires. The study was motivated by an interest in predicting the behavior of large heaters at low gravity. The application of the present results to such circumstances is therefore discussed. It is proposed that the peak and minimum heat fluxes will vanish at low gravity as well as on small wires.

Announcement: 1971 Author and Subject Indexes

4 Skop, R. A. and Choo, Y., Configuration of a Cable Towed in a Circular Path/' Proceedings of the Symposium on Ocean Engineering, Univ. of Pennsylvania, 1970, pp. 3E1-3E24. 5 Crist, S. A., Analysis of the Motion of a Long Wire Towed from an Orbiting Aircraft, The Shock and Vibration Bulletin, No. 41-Pt. 6, Dec. 1970, Naval Research Lab., Washington, D. C., pp. 61-73. 6 Choo, Y., Analytical Investigation of the Three-Dimensional Motion of Towed Systems, D. Eng. thesis, 1970, Catholic Univ. of America, Washington, D. C. 7 Relf, E. F. and Powell, C. H., on Smooth and Stranded Wires Inclined to the Wind Direction and Comparison of Results on Stranded Wires in Air and Water, Rept. and Memo. 307, 1917, Aeronautical Research Committee, London, England. 8 Gibbons, T. and Walton, C. O., Evaluation of Two Methods for Predicting Towline Tensions and Configurations of a Towed Body System Using Bare Cable, Rept. 2313, Dec, 1966, David Taylor Model Basin, Washington, D. C. 9 Hoerner, S. F., Fluid Dynamic Drag, published by the author, 1965, Brick Town, N. j. 10 Long, M. E., Wind-Tunnel Tests of Mine Sweeper Cables, R-213, Dec. 1949, David Taylor Model Basin, Washington, D. C. 11 Pode, L., An Experimental Investigation of the Hydrodynamic Forces on Stranded Cables, Rept. 713, May 1950, David Taylor Model Basin, Washington, D. C. 12 Schultz, M. P., Wind-Tunnel Determination of the Aerodynamic Characteristics of Several Twisted Wire Ropes, Rept. 1645, June 1962, David Taylor Model Basin, Washington, D. C. 13 Gay, S. M., Engineering Techniques for Applications to Deep-Water Mooring, ASME Paper 66-PET-31, 1966. 14 Kochin, N. E., Kibel, I. A., and Roze, N. V., Theoretical Hydromechanics, Interscience, New York, 1965, pp. 329-332, 401-403. 15 Noonan, B. J., A Study of the Motion of a Cable System Towed from an Orbiting Vehicle, Ph.D. dissertation, 1971, Catholic Univ. of America, Washington, D. C.

Shape of the compression pulse produced by the electrical explosion of wires in water

Shape of the compression pulse produced by the electrical explosion of wires in water

A Comparative Study of Exploding Wires in Air and Water

The results of a comparative study of exploding wires in air and water are presented. It is shown that under water the wire explosion presents a more orderly structure then the equivalent explosion in air. The possibility of axial temperature variations in the wire before rupture is postulated. The elimination of the plasma sheath commonly associated with the explosion in air is noted.

Letter relating to the discussion on “Note on some effects produced by the immersion of steel and iron wires in acidulated water”

Letter relating to the discussion on “Note on some effects produced by the immersion of steel and iron wires in acidulated water”

Discussion on “Note on some effects produced by the immersion of steel and iron wires in acidulated water”

Discussion on “Note on some effects produced by the immersion of steel and iron wires in acidulated water”