Results 251 to 260 of about 477,773 (283)

Fluid displacement in a horizontal tube

Journal of Non-Newtonian Fluid Mechanics, 1996
Abstract The displacement of Newtonian fluids by non-Newtonian fluids in a horizontal cylindrical tube has been investigated both theoretically and experimentally. Theoretical expressions for the breakthrough time, a function of the constitutive constants of the fluids and of the flow parameters and geometry, are derived when the displacing fluids ...
Sayavur Bakhtiyarov, Dennis A Siginer
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Temperature gradients in horizontal tube furnaces

Thermochimica Acta, 1986
Abstract Radial temperature differences in a 1 in. diameter horizontal tube furnace similar to those used in thermogravimetry were measured as a function of purge gas flow rate and pressure at temperatures from 25 to 525°C. The temperature difference between a thermocouple at the tube axis and one 0.8 cm off center was 45°C at 400°C, 1 atm pressure ...
Joseph H. Flynn, Lee A. Dunlap
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Coiled Tubing Applications In Horizontal Completions

Journal of Canadian Petroleum Technology, 1993
Abstract The popularity of horizontal drilling has resulted in a number of new completion techniques including the use of coiled tubing in the treatment of horizontal wells. This paper presents an overview of the characteristics and mechanical properties of coiled tubing in a horizontal environment.
Dale M. Dusterhoft, Kelly L. Falk, J.G. Misselbrook   +2 more
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Coiled Tubing in Horizontal Wells

Proceedings of International Meeting on Petroleum Engineering, 1988
ABSTRACT Coiled tubing is an effective tool in logging and workover applications of horizontal wells. Several operators have taken advantage of using coiled tubing to log or perforate wells which could not have been performed with conventional wireline methods. Specialized surface and subsurface equipment has been developed to facilitate
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Stratified flow film boiling inside horizontal tubes

International Journal of Multiphase Flow, 1995
Stratified flow film boiling inside a horizontal tube was investigated. A one-dimensional flow model was used to solve for the local vapor film thickness and vapor velocity in the vapor channel in the circumferential direction. Analytical solutions for the local vapor film thickness and heat transfer coefficient at the bottom of the tube were derived ...
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Condensate Subcooling near Tube Exit During Horizontal In-Tube Condensation

Heat Transfer Engineering, 1992
An investigation has been carried out on condensate subcooling near the tube exit during horizontal in-tube condensation, both experimentally and analytically. In the experiment, test fluids used were Refrigerants R113, R11, R114, and R12. Condensate subcoolings of larger than 10 K were measured, even before condensation was completed, and data of ...
KENICHI HASHIZUME, NORIMITSU ABE, TOSHIAKI OZEKI   +2 more
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Critical heat flux on a tube in a horizontal tube bundle

Experimental Thermal and Fluid Science, 1992
Abstract An experimental study was conducted on the critical heat flux (CHF) phenomenon on a single tube in an inline horizontal tube bundle that operates in an upward two-phase cross flow. For a saturated liquid, the CHF was 10–20% lower than the pool boiling value; there was no significant variation in the CHF with mass velocity. At low mass fluxes,
Stanley Dykas, Michael K. Jensen
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Condensation on a Horizontal Wire-Wrapped Tube

Journal of Heat Transfer, 2005
Abstract Measurements for film condensation of steam, R113 and ethylene glycol on a horizontal wire-wrapped tube are reported. All measurements were made at near atmospheric vapor pressure and with coolant at around 20°C. Care was taken to avoid error due to the presence of air in the vapor.
Takahiro Murase, Adrian Briggs, Hua Sheng Wang, John W. Rose   +3 more
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Forced convective boiling in horizontal tube bundles

International Journal of Heat and Mass Transfer, 1986
Abstract Experimental studies of crossflow boiling on a horizontal tube at various in Mass fluxes, local flow qualities and geometric arrangements are investigated. Since abundant information is available for the boiling on a single tube in a pool but it is still not clear whether this information in ay be applicable to tubes in bundles, the present ...
T.H. Hwang, S.C. Yao
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Condensation of binary mixtures on horizontal tubes

Heat and Mass Transfer, 2017
The two most common models to describe the condensation of binary mixtures are the equilibrium model by Silver (Trans Inst Chem Eng 25:30–42, 1947) and the film model by Colburn and Drew (Transactions of the American Institute of Chemical Engineers 33:197–215, 1937), which is stated by Webb et al.
A. Büchner, A. Reif, S. Rehfeldt, H. Klein   +3 more
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