Results 11 to 20 of about 16,459 (288)
Coiling instabilities of multilamellar tubes [PDF]
Physical Review E, 2002 Myelin figures are densely packed stacks of coaxial cylindrical bilayers that are unstable to the formation of coils or double helices. These myelin figures appear to have no intrinsic chirality. We show that such cylindrical membrane stacks can develop an instability when they acquire a spontaneous curvature or when the equilibrium distance between ...
Santangelo, Christian, Pincus, P.
openaire +3 more sources
Biocide-mediated corrosion of coiled tubing. [PDF]
PLoS One, 2017 Coiled tubing corrosion was investigated for 16 field water samples (S5 to S20) from a Canadian shale gas field. Weight loss corrosion rates of carbon steel beads incubated with these field water samples averaged 0.2 mm/yr, but injection water sample S19 had 1.25±0.07 mm/yr.
Sharma M +5 more
europepmc +5 more sources
Motion Mechanism and Friction Analysis of Fluid Flow in the Curved Coiled Tubing
Shiyou jixie, 2020 The curveture of the wellbore directly affects the bending state of the coiled tubing in the well and the motion characteristics and friction of the fluid in the coiled tubing.
Tong Shaokai, Gao Deli, Yue Yanfang
doaj
Cryogenic gel flow viscometer [PDF]
, 1972 Coiled section of tubing measures viscous properties of gelled cryogenic propellants under conditions closely resembling flow in rocket engine systems. Characteristic flow curve provides data necessary for the design of prototype hardware systems using ...
Globus, R. H., Vanderwall, E. M.
core +1 more source
Surface Tension Measurement of Ti‐6Al‐4V by Falling Droplet Method in Oxygen‐Free Atmosphere
Advanced Engineering Materials, EarlyView.In this article, the temperature‐dependent surface tension of free falling, oscillating Ti‐6Al‐4V droplets is investigated in both argon and monosilane doped, oxygen‐free atmosphere. Droplet temperature and oscillation are captured with one single high‐speed camera, and the surface tension is calculated with Rayleigh's formula.
Johannes May +9 more
wiley +1 more source
The Effect of Pit Defect Parameters on Fatigue Failure of Coiled Tubing
Shiyou jixie, 2020 To study the relationship between pit defect parameters and fatigue failure of coiled tubing, a finite element model of coiled tubing with defects was established, and was verified by tests.
Liu Shaohu +3 more
doaj
Candidate Selection and Assessment of The Benefits of Velocity Strings On The Dunbar Field [PDF]
, 2012 Imperial Users ...
Fadipe, Damola, Fadipe, Damola
core
Reconfigurable Magnetic Soft Microrobot for Acoustically Triggered Targeted Bacterial Sterilization
Advanced Functional Materials, EarlyView.Reconfigurable magnetic soft microrobots integrate in situ‐grown piezoelectric zinc oxide nanorods that produce reactive oxygen species upon acoustic excitation. Combining magnetically guided transport with thermally induced planar reconfiguration, the microrobots achieve targeted delivery and enhanced bacterial sterilization through efficient on ...
Quan Gao +12 more
wiley +1 more source
Radiator deployment actuator Patent [PDF]
, 1971 Hydraulic actuator design for space deployment of heat ...
Kolstee, H. M., Simpson, W. E.
core +1 more source
Advanced Functional Materials, EarlyView.Microscale hydrogels (microgels) feature improved mass transport characteristics supportive of fast actuation and chemical tunability amenable to programmed stimuli response. A unique soft actuator architecture is realized by encapsulating microgels in soft microcirculatory systems which enable the convenient delivery of liquid stimuli for powering and
Nengjian Huang +2 more
wiley +1 more source