Results 1 to 10 of about 55,167 (191)

Resonant Interactions in Rotating Homogeneous Three-dimensional Turbulence [PDF]

, 2004
Direct numerical simulations of three-dimensional (3D) homogeneous turbulence under rapid rigid rotation are conducted to examine the predictions of resonant wave theory for both small Rossby number and large Reynolds number.
Chen, Q., Chen, S., Eyink, G. L., Holm, D. D.   +3 more
core   +2 more sources

Dynamo action at low magnetic Prandtl numbers: mean flow vs. fully turbulent motion [PDF]

, 2006
We compute numerically the threshold for dynamo action in Taylor-Green swirling flows. Kinematic calculations, for which the flow field is fixed to its time averaged profile, are compared to dynamical runs for which both the Navier-Stokes and the ...
, A Pouquet, Bayliss R A, Brachet M, Davidson P, Gailitis A, H Politano, J-F Pinton, Kazantsev A P, Marié L, Moffatt H K, P D Mininni, Ponty Y Mininni P D Pinton J-F Politano H Pouquet A, Schekochihin A A, Tilgner A, Y Ponty, Zeldovich Ya   +16 more
core   +6 more sources

Time-averaged shallow water model: asymptotic derivation and numerical validation [PDF]

, 2015
The objective of this paper is to derive, from the Navier-Stokes equations in a shallow domain,a new bidimensional shallow water model able to filter the high frequency oscillations that are produced, when the Reynolds number is increased, in turbulent ...
Rodríguez Seijo, José Manuel, Taboada-Vázquez, Raquel   +1 more
core   +2 more sources

Enhanced Responsivity, Accuracy, and Stability of Aerosol Jet Printing via Mechanical Switching Valve Assisted Internal Shuttering

Advanced Science, EarlyView.
This work demonstrates ultra‐high ON‐OFF responsivity of AJP by mechanical switching valve assisted shuttering. The jet relaxation and ON‐OFF delay are substantially eliminated from greater than 35 s, maintaining patterning quality independent of the variations of printing parameters, permitting excellent process stability and universality.
Jinhang Wang, Li Meng, Shuhuan Zhang, Pan Chen, Kaiwen Wei, Beibei Zhu, Xiaoyan Zeng   +6 more
wiley   +1 more source

Reconfigurable Acoustofluidic Microvortices for Selective Microcargo Delivery

Advanced Science, EarlyView.
This work introduces a frequency‐encoded, reconfigurable acoustofluidic system that overcomes the low throughput and poor selectivity of conventional micro‐delivery methods. By exploiting discrete microbubble resonances to program adaptive microvortex modes, the platform enables real‐time switching and selective guidance of microscale payloads through ...
Lei Wang, Yiqiang Wu, Yiyang Tang, Hui Wei, Tianshi Lyu, Xin Zhang, Tian‐Yun Huang   +6 more
wiley   +1 more source

Optimization of Ion Migration During Lithium‐Ion Recovery Through Electrodialysis by Numerical Simulations

Asia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT Electrodialysis plays an important role in lithium extraction from brine. A two‐dimensional mathematical model for steady electrolyte transport during electrodialysis desalination is constructed in this study to uncover the mechanism of lithium‐ion transfer and forecast the behavior of electrodialysis.
Kang Li, Xiaoyan Wei, Wanqi Wang, Qian Zhang, Yun Ding, Qing Yang   +5 more
wiley   +1 more source

Numerical and Experimental Study of Mixing Characteristics in a Spiral Micromixer

Asia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT Significant enhancement of mixing performance can be achieved by Dean vortices in spiral channels. In order to deeply explore the mixing mechanisms and variation laws in spiral micromixers, this work designed a spiral micromixer and adopted a combined method of experiments and numerical simulations to analyze the mixing performance and ...
Anming Yang, Shiqing Zheng
wiley   +1 more source

Radial capacity and hemodynamics evaluation in vitro and implantable feasibility validation in vivo of thinner bioresorbable polymer vascular stents

BMEMat, EarlyView.
A series of in vitro experiments, numerical simulations and in vivo experiments were conducted to jointly evaluate the effects of different thicknesses of bioabsorbable polymer vascular stents on their radial capacity, hemodynamics and in vivo outcomes.
Chong Chen, Tao Li, Zhongyou Li, Jingyuan Zhou, Zhuo Zhang, Yan Xiong, Rifang Luo, Yu Chen, Yunbing Wang, Ping Fu   +9 more
wiley   +1 more source

Uniform Gas Flow Distribution into Several Partial Flows under Consideration of Closable Outlets

Chemie Ingenieur Technik, EarlyView.
The uniform distribution of a gas flow into several partial flows poses a challenge in various technical fields. This study presents a static flow distributor design that ensures an equal distribution of an inlet gas flow regardless of the flow rate and the number of open outlets.
Nikolas Schmidt, Markus Labus, Peter Wasserscheid, Stefan Will   +3 more
wiley   +1 more source

Intermittency and regularity issues in 3D Navier-Stokes turbulence [PDF]

, 2004
Two related open problems in the theory of 3D Navier-Stokes turbulence are discussed in this paper. The first is the phenomenon of intermittency in the dissipation field.
18, Angilella, Angilella, Arad, Arad, Babin, Babin, Babin, Bartuccelli, Bartuccelli, Bartuccelli, Bartuccelli, Batchelor, Beale, Caffarelli, Charles R. Doering, Choe, Constantin, Constantin, Doering, Doering, Douady, Flohr, Foias, Foias, Foias, Foias, Foias, Frisch, Frisch, Gibbon, Hosokawa, J. D. Gibbon, Jones, Kerr, Kuo, Leray, Lin, Lundgren, Meneveau, Scheffer, Sreenivasan, Sreenivasan, Sreenivasan, Sulem, Vassilicos, Vincent, Zakharov, Zeff   +48 more
core   +3 more sources