Results 241 to 250 of about 62,218 (321)

Comparative Analysis of Hydrodynamic Performance for Flapping Hydrofoils Driven by Three Typical Transmission Mechanisms. [PDF]

Biomimetics (Basel)
Hua E, Li S, Wu X, Lin Y.
europepmc   +1 more source

Bioinspired Heat Exchangers: A Multi-Scale Review of Thermo-Hydraulic Performance Enhancement. [PDF]

Biomimetics (Basel)
Yang H, Pi J, Park S, Bae W.
europepmc   +1 more source

Tunable elliptical cylinders for rotational mechanical studies of single DNA molecules. [PDF]

Sci Adv
Hong Y, Ye F, Gao X, Inman JT, Wang MD.
europepmc   +1 more source

In-flow single particle detection of sub-100 micron microplastics. [PDF]

RSC Adv
Paruli EI, De Lavigne Sainte-Suzanne A, Debeaumont M, Thomas L, Courson R, Challier L, El Rakwe M, Prado E.   +7 more
europepmc   +1 more source

Bioinspired Drilling for Extraterrestrial Applications. [PDF]

Biomimetics (Basel)
Battsengel GE, Melkoumian N, Harvey D, Akmeliawati R.   +3 more
europepmc   +1 more source

Robust undulatory locomotion through neuromechanical adjustments in a dissipative medium. [PDF]

J R Soc Interface
Ishimoto K, Moreau C, Herault J.
europepmc   +1 more source

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Torque and Drag Calculations in Multilateral Wells

SPE Nigeria Annual International Conference and Exhibition, 2022
Abstract Multilateral drilling technology has advanced to the point that it is now feasible to explore and extract resources from previously unprofitable reservoirs. It may also help to enhance field development management by allowing for more efficient fluid flow from the formation.
Darlington Etaje, Roman Shor, Reza Lashkari   +2 more
openaire   +2 more sources

Dynamic Model for Stiff-String Torque and Drag

SPE Drilling & Completion, 2013
SummaryA dynamic stiff-string torque-and-drag (T&D) model is presented that assumes steady-state motion of the drillstring as its basis for calculations. Results are compared with previously published T&D models that are based on static equilibrium.
Vadim Tikhonov, Khaydar Valiullin, Albert Nurgaleev, Lev Ring, Raju Gandikota, Pavel Chaguine, Curtis Cheatham   +6 more
semanticscholar   +5 more sources

Designing Well Paths to Reduce Drag and Torque

SPE Drilling Engineering, 1987
Summary A deviated well with an undersection trajectory (i.e., a trajectory lying below the conventional tangent section and constantly building to target) can exhibit lower drag and torque than a conventional well geometry in certain circumstances. The influence of well geometry on drag and torque is discussed, making use of the results
M. C. Sheppard, C. Wick, T. Burgess
openaire   +2 more sources

Calculation of drag and torque coefficients by time-independent lattice-Boltzmann method

Physical Review E, 2014
A method is developed to calculate the drag and torque coefficients of an isolated particle in a Stokes flow. The method is based on solving the time-independent lattice-Boltzmann equation. The advantage of this method is that the algorithm is easy to code, the method can be applied to any shape of the particle without complicated implementation, and ...
E. Ding
openaire   +3 more sources