Results 261 to 270 of about 708,486 (305)

Computing Collapse Pressure for Coiled Tubing

SPE Gulf Coast Section/ICoTA North American Coiled Tubing Roundtable, 1996
Abstract Other published literature discusses collapse pressure (CP) for round tubing,1 and proposes one collapse pressure (CP) expression for any OD-to-wall (D/t) ratio. This expression is easily solved and can be used with all units: US, metric, etc. CP for oval tubing was a subject of another paper.2 This paper presents
Vladimir Avakov, Hampton Fowler
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Pressure-Flow Relationships in Collapsible Tubes

IEEE Transactions on Biomedical Engineering, 1969
The pressure-flow characteristic of a short collapsible tube held open at its ends and inserted between two constrictions was investigated as a function of flow for different external pressures and downstream constrictions. Taking the upstream and downstream pressure and the flow through the tube as coordinates, a surface can be determined from which ...
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Collapse pressures for rhombic plates

International Journal of Mechanical Sciences, 2000
In earlier works of the author upper bound estimates for the collapse of clamped or simply-supported regular polygonal plates under uniform pressure had been derived for rigid-plastic materials that satisfy the square Johansen yield criterion. The present paper adopts a similar technique and desribes the collapse mechanism more precisely, in particular
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Pressure-Flow Characteristics of Collapsible Tubes

Advances in Bioengineering, 1994
Abstract An experimental investigation has been made on the pressure-flow behaviour of collapsible tubes, particularly the effects due to upstream pressure and downstream reservoir-head. These and other experimental parameters were systematically varied to determined the pressure-drop versus flow characteristics.
Hong T. Low, Yong T. Chew, Jian W. Wang
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Pressure/flow relationships in collapsible tubes: effects of upstream pressure fluctuations

Medical & Biological Engineering & Computing, 1991
An experimental investigation has been made on the pressure/flow behaviour of a collapsible tube. Of particular interest are the effects of upstream pressure fluctuations on the mean pressure/flow relationships. These mean pressure/flow relationships were found to exhibit features generally similar to the steady-flow situation, including flow ...
Low, H.T., Chew, Y.T.
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The Role of Pressure During Shearing, Dissipative Collapse

International Journal of Theoretical Physics, 2012
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Govender, M., Govinder, K. S., Fleming, D.   +2 more
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Gravitational Collapse with Cosmological Constant and Anisotropic Pressure

International Journal of Theoretical Physics, 2015
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Ahmad, Zahid, Malik, Sania Abdul
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Experimental Investigation of Cavity Collapse Pressures

The Journal of the Acoustical Society of America, 1959
Single, hemispherical spark cavities were created in water at the pressure end of a Duralumin pressure bar. At the collapse of such a cavity, a transient stress pulse (∼20 μsec duration) is propagated along the bar which is detected by an X-cut circular disk of quartz of the same diameter as the pressure bar.
I. R. Jones, A. T. Ellis
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Pressure-induced homothetic volume collapse in silicon clathrates

Europhysics Letters (EPL), 2005
The high-pressure properties of the Ba-doped silicon clathrate Ba8Si46 have been investigated combining X-ray diffraction and X-ray absorption spectroscopy. A pressure-induced isostructural phase transition associated with an important volume collapse takes place at 11.5–14 GPa.
San Miguel, A., Merlen, A., Toulemonde, Pierre, Kume, T., Le Floch, S., Aouizerat, A., Pascarelli, S., Aquilanti, G., Mathon, O., Le Bihan, T., Itié, J.-P., Yamanaka, S.   +11 more
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Collapsing Cristobalitelike Structures in Silica Analogues at High Pressure

Physical Review Letters, 2003
The cristobalitelike forms of the ternary silica analogues BPO4 and BAsO4 were investigated at high pressure by x-ray diffraction and theoretical methods. The behavior of these compounds represents an extreme case in which the tilt angle of the constituent tetrahedra increases in a spectacular way at high pressure resulting in a major change in ...
Haines, J., Chateau, C., Léger, J. M., Bogicevic, C., Hull, S., Klug, D. D., Tse, J. S.   +6 more
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