Results 61 to 70 of about 991,484 (340)

The Universal Presence of the Reynolds Number

Fluids
The Reynolds number is a fundamental parameter in fluid dynamics, initially introduced by O. Reynolds in 1883 to characterize the transition between laminar and turbulent flow in fluids and necessary in the scaling of viscous resistance.
Aldo Tamburrino, Yarko Niño
doaj   +1 more source

Numerical investigation on heat transfer behavior of thermally developing flow inside rectangular microchannels

Case Studies in Thermal Engineering, 2021
A numerical investigation is conducted to study the heat transfer characteristics of laminar flow in three-dimensional rectangular microchannels with aspect ratios of 0.1–1 and Reynolds numbers of 5–400.
Hao Ma, Zhipeng Duan, Xiaoru Ning, Liangbin Su   +3 more
doaj   +1 more source

Fractal Stability Border in Plane Couette Flow

, 1997
We study the dynamics of localised perturbations in plane Couette flow with periodic lateral boundary conditions. For small Reynolds number and small amplitude of the initial state the perturbation decays on a viscous time scale $t \propto Re$.
A. G. Darbyshire, A. Rauh, B. Eckhardt, B. Eckhardt, B. F. Farrell, D. Coles, D. J. Acheson, D. Stassinopoulos, E. Ott, F. Daviaud, J. P. Crutchfield, J. T. Stuart, J. Watson, J. Zang, L. Boberg, L. N. Trefethen, M. Nagata, N. Tillmark, N. Tillmark, O. Dauchot, P. G. Drazin, R. M. Clever, R. M. Clever, R. M. Clever, S. A. Orszag, S. C. Reddy, S. Chandrasekhar, S. Malerud, T. Gebhardt, U. Brosa, U. Brosa, V. A. Romanov   +31 more
core   +1 more source

Biotechnology at low Reynolds numbers

Biophysical Journal, 1996
The shrinking of liquid handling systems to the micron and submicron size range entails moving into the area of small Reynolds numbers. The fluid dynamics in this regime are very different from the macroscale. We present an intuitive explanation of how the different physics of small Reynolds numbers flow, along with microscopic sizes, can influence ...
Brody, J.P., Yager, P., Goldstein, R.E., Austin, R.H.   +3 more
openaire   +2 more sources

A Superhydrophobic 3D Cell Culture System Reveals the Mechanobiological Role of Cancer‐Associated Fibroblasts in Prostate Cancer Metastasis

Advanced Healthcare Materials, EarlyView.
A superhydrophobic 3D cell culture platform enables rapid and consistent formation of heterotypic tumor–stroma clusters, and reveals how physiological shear conditions influence metastatic signaling. Mechanical stimulation of cancer‐associated fibroblasts promotes sustained cytokine secretion and survival‐promoting pathways, showing how multicellular ...
Alexandria T. Carter, Abigail R. Fabiano, Ehsan Aalaei, Jason Deng, Dakota E. Rostant, Michael R. King   +5 more
wiley   +1 more source

Wing Efficiency Enhancement at Low Reynolds Number

Aerospace
The aerodynamic performance of wings degrades severely at low Reynolds number; lift often becomes non-linear, while drag increases significantly, caused by large extents of separation.
Lance W. Traub
doaj   +1 more source

Peripheral mixing of passive scalar at small Reynolds number

, 2008
Mixing of a passive scalar in the peripheral region close to a wall is investigated by means of accurate direct numerical simulations of both a three-dimensional Couette channel flow at low Reynolds numbers and a two-dimensional synthetic flow.
Boffetta, G., De Lillo, F., Mazzino, A.
core   +1 more source

Epidermal Patch Technologies for Integrated Healthcare and Infection Management

Advanced Healthcare Materials, EarlyView.
Epidermal patches have evolved from simple wound coverings into multifunctional, skin‐conformable platforms integrating drug delivery, biosensing, and therapeutic functionalities. This review highlights their material innovations, fabrication strategies, and intelligent designs, including hydrogels, microneedles, and flexible electronics, while ...
Yuqi Wang, Atakan Tevlek, Pawel L. Urban, Boaz Mizrahi, Onome Ejeromedoghene, Roshan Deen, Yuanjing Lin, Jagan Mohan Dodda   +7 more
wiley   +1 more source

Spectral imbalance and the normalized dissipation rate of turbulence

, 2007
The normalized turbulent dissipation rate $C_\epsilon$ is studied in decaying and forced turbulence by direct numerical simulations, large-eddy simulations, and closure calculations.
J.-P. Bertoglio, L. Shao, Lesieur M., Liechtenstein L., Lévêque E., W. J. T. Bos   +5 more
core   +2 more sources

Self‐Assembled Inorganic Nanomembrane Tubes: Rolled‐Up Piezoelectrics for Microacoustic Wave‐Based Actuators and Sensors

Advanced Materials, EarlyView.
This study demonstrates a self‐assembly process to generate free‐standing piezoelectric nanomembranes, forming ultracompact microtubular acoustic wave sensors and actuators. The miniaturized 3D piezoelectric platform reported in this work can be applied in telecommunication, energy harvesting, and acoustofluidics. Moreover, the 3D self‐assembly can add
Raphaël C. L‐M. Doineau, Christian N. Saggau, Stefan Baunack, Thomas Gemming, Yara Abdelaal, Robert Weser, Oliver G. Schmidt, Hagen Schmidt, Andreas Winkler, Mariana Medina‐Sánchez   +9 more
wiley   +1 more source