Results 71 to 80 of about 117,422 (348)

Universal Solvent Escape Strategies for Efficient Curing of Hydrogen‐Bond‐Rich 3D Printing Inks

Advanced Science, EarlyView.
This study developed a new 3D printing method for hydrogen‐bonded polymers by combining solvent replacement, nanoparticles, and optimized printing paths. This allows fast, precise scaffold fabrication. The scaffolds can be easily customized and release therapeutic agents slowly through protonation, enabling personalized bone, blood vessel, and nerve ...
Jie Chen, Qing Zhao, Wentao Fu, Weixian Chen, Xiaoqian Zhang, Gaiying Ye, Qinglei Meng, Liyuan Shao, Qian Ma, Lin Zhao, Ying Zhao, Weihua Guo   +11 more
wiley   +1 more source

Assessments of k-kL Turbulence Model Based on Menter’s Modification to Rotta’s Two-Equation Model

International Journal of Aerospace Engineering, 2015
The main objective of this paper is to construct a turbulence model with a more reliable second equation simulating length scale. In the present paper, we assess the length scale equation based on Menter’s modification to Rotta’s two-equation model ...
Khaled S. Abdol-Hamid
doaj   +1 more source

Coherent structures in dissipative particle dynamics simulations of the transition to turbulence in compressible shear flows. [PDF]

Physical review. E, Statistical, nonlinear, and soft matter physics, 2008
We present simulations of coherent structures in compressible flows near the transition to turbulence using the dissipative particle dynamics method. The structures we find are remarkably consistent with experimental observations and direct numerical ...
Jan-Willem van de Meent, A. Morozov, E. Somfai, E. Sultan, W. van Saarloos   +4 more
semanticscholar   +1 more source

Electrochemical Nitrate Reduction Reaction to Ammonia at Industrial‐Level Current Densities

Advanced Science, EarlyView.
This review starts from the mechanism and theoretical basis of electrochemical nitrate reduction reaction (NO3−RR), and systematically summarizes and discusses the design strategies of industrial‐level current density catalysts. In addition, the progress of industrial‐level NO3−RR‐based electrolyzers, including flow reactor and membrane electrode ...
Zhijie Cui, Honghai Wang, Chunli Li, Wenchao Peng, Jiapeng Liu   +4 more
wiley   +1 more source

Comparison of Five Two-Equation Turbulence Models for Calculation of Flow in 90° Curved Rectangular Ducts

Journal of Applied Fluid Mechanics, 2016
This paper presents a comparative study of five most widely used two-equation turbulence models in predicting the developing flows in two 90° curved rectangular ducts.
Kun Ma, H. Lai
doaj  

Numerical Simulations of Turbulent Gas-solid Flow in a Gradual Expansion [PDF]

Journal of Applied Fluid Mechanics
Modeling efforts on turbulent gas-solid flows have mainly focused on studying particle-laden flows in channels and pipes. Despite its significance for industrial applications, the study of gas-solid flows in sudden or gradual expansions is less common in
A. Benavides-Moran, S. Lain
doaj   +1 more source

Large‐Scale Synthesis of Monodispersed Perovskite Nanocrystals via Autonomous Continuous Droplet Microfluidics

Advanced Science, EarlyView.
In this work, we propose a novel on‐chip microscale continuous droplet‐in‐flow synthesis (μ‐CDFS) that utilizes zwitterionic ligands to enable large‐scale preparation of perovskite nanocrystals (PNCs) with high emission efficiency and monodispersity.
Guangguang Huang, Xiangyu Liu, Long Song, Hailong Feng, Zuliang Du   +4 more
wiley   +1 more source

Turbulence Model Assessment in Compressible Flows around Complex Geometries with Unstructured Grids

Fluids, 2019
One of the key factors in simulating realistic wall-bounded flows at high Reynolds numbers is the selection of an appropriate turbulence model for the steady Reynolds Averaged Navier−Stokes equations (RANS) equations.
Guillermo Araya
doaj   +1 more source

Observations of the Kelvin-Helmholtz instability driven by dynamic motions in a solar prominence [PDF]

, 2018
Prominences are incredibly dynamic across the whole range of their observable spatial scales, with observations revealing gravity-driven fluid instabilities, waves, and turbulence.
Hillier, Andrew, Polito, Vanessa
core   +2 more sources

Ultra‐Efficient Kidney Stone Fragment Removal via Spinner‐Induced Synergistic Circulation and Spiral Flow

Advanced Intelligent Systems, EarlyView.
Leveraging spinning‐induced localized suction, the spinner device enables ultra‐efficient removal of kidney stone fragments, capturing a larger quantity of fragments from distances exceeding 20 mm. The spinner significantly improves the efficiency and effectiveness of stone fragment removal by reducing operative time, increasing stone‐free rates, and ...
Yilong Chang, Jasmine Guadalupe Vallejo, Yangqing Sun, Ruike Renee Zhao   +3 more
wiley   +1 more source