Results 111 to 120 of about 452,313 (293)

New Atmospheric Turbulence Model for Shuttle Applications [PDF]

An updated NASA atmospheric turbulence model, from 0 to 200 km altitude, which was developed to be more realistic and less conservative when applied to space shuttle reentry engineering simulation studies involving control system fuel expenditures is ...
Campbell, C. W., Doubleday, M. K., Johnson, D. L., Justus, C. G.   +3 more
core   +1 more source

Return and Volatility Spillovers Among Major Cotton Markets

Agribusiness, EarlyView.
ABSTRACT This study explores return and volatility transmission among major cotton markets. Several events have disrupted cotton supply and demand in recent years, leading to heightened price volatility and significant shifts in market interconnections.
Susmitha Kalli, Berna Karali, Yangxuan Liu, Munisamy Gopinath   +3 more
wiley   +1 more source

ChatCFD: A Large Language Model‐Driven Agent for End‐to‐End Computational Fluid Dynamics Automation with Structured Knowledge and Reasoning

Advanced Intelligent Discovery, EarlyView.
Chat computational fluid dynamics (CFD) introduces an large language model (LLM)‐driven agent that automates OpenFOAM simulations end‐to‐end, attaining 82.1% execution success and 68.12% physical fidelity across 315 benchmarks—far surpassing prior systems.
E Fan, Kang Hu, Zhuowen Wu, Jiangyang Ge, Jiawei Miao, Yuzhi Zhang, He Sun, Weizong Wang, Tianhan Zhang   +8 more
wiley   +1 more source

Solar Flow Synthesis of Polymer Nanoparticles: Scaling Local Experiments to Global Potential

Angewandte Chemie, EarlyView.
The large‐scale sunlight‐induced photochemical synthesis of polymer nanoparticles based on the Diels–Alder step‐growth polymerization of a bismaleimide and a difunctional o‐methylbenzaldehyde in a self‐built solar flow reactor is introduced. Furthermore, a framework is established to translate sunlight‐driven experimental results globally—validated in ...
Jochen A. Kammerer, Joshua O. Holloway, Theresa Stephan, Hartmut Gliemann, Florian Feist, Fred Pashley‐Johnson, Laura Delafresnaye, Christopher Barner‐Kowollik   +7 more
wiley   +2 more sources

A near-wall turbulence model and its application to fully developed turbulent channel and pipe flows [PDF]

A near wall turbulence model and its incorporation into a multiple-time-scale turbulence model are presented. In the method, the conservation of mass, momentum, and the turbulent kinetic energy equations are integrated up to the wall; and the energy ...
Kim, S.-W.
core   +1 more source

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

Aerodynamic Phenomena of Controlling Passive Flow of a Time‐Independent Ground Vehicle Under the Scope of Optimally Slanted Rear Wing‐Spoiler Combination

Engineering Reports
Notwithstanding the abundance of different expository efforts by the engineers and scientists of the aerodynamic—transonic domain for the ever‐beseeched question of whether a supercar needs a rear spoiler or a rear wing, the query requires further ...
Abyaz Abid
doaj   +1 more source

Design of a Reconfigurable Microfluidic System Enabled by Magnetic Miniature Robots

Advanced Intelligent Systems, EarlyView.
Magnetic miniature robots are integrated into microfluidic chips to achieve real‐time reconfiguration. By external magnetic actuation, the robots perform sorting, mixing, flow regulation, and bubble removal on demand. This versatile platform eliminates the need for complex on‐chip hardware and enables adaptive control for biological and chemical ...
Yuanhe Chen, Zichen Xu, Yu Sun, Qingsong Xu   +3 more
wiley   +1 more source

Mixing Time Prediction in a Ladle Furnace

Metals
This paper presents a study on the effectiveness of two turbulence models, the large eddy simulation (LES) model and the k-ε turbulence model, in predicting mixing time within a ladle furnace using the computational fluid dynamics (CFD) technique.
Xipeng Guo, Yun Liu, Yasmeen Jojo-Cunningham, Armin Silaen, Nicholas Walla, Chenn Zhou   +5 more
doaj   +1 more source

Microfluidic Mixing with the Dynamic Control of Magnetic Actuation

Advanced Intelligent Systems, EarlyView.
Schematic illustration and flow field visualization of magnetically actuated L‐shaped microrobots displaying cooperative vortex generation for enhanced microscale mixing. The left side shows the electromagnetic actuation setup, which enables programmable control of rotational direction and frequency.
Prashant Kishor Sharma, Tsung‐Yen Lu, Chia‐Yuan Chen   +2 more
wiley   +1 more source