Results 91 to 100 of about 6,144,611 (296)

Experimental Study on CoolingHeat Transfer of R410A and R22 in Small-diameter Tubes

Zhileng xuebao, 2020
A test rig for condensation heat transfer was developed and the cooling heat transfer characteristics of R22 and R410Ain small-diameter tubes were compared. The test conditions were as follows: the mass flow rate 200–800 kg/(m2?s), saturation temperature
Feng Guangdong, Liu Jianhua, Zhang Liang, He Kuan   +3 more
doaj  

Inverse Identification of Energy‐Dependent Laser Absorptivity in NiTi Laser Powder‐Bed Fusion via Calibrated Melt Pool Simulation

Advanced Engineering Materials, EarlyView.
A combined experimental–computational framework identifies energy‐dependent laser absorptivity for NiTi in laser powder‐bed fusion, applicable to conduction and transition modes. Single‐track experiments and thermofluid smoothed particle hydrodynamics simulations are coupled through inverse analysis of melt pool geometry.
Mohamadreza Afrasiabi, Hadi Moutablaleh, Ignatius A. Setiawan, Mehrshad Mehrpouya   +3 more
wiley   +1 more source

Velocity and temperature distributions in compressible turbulent boundary layers with heat and mass transfer [PDF]

, 2000
In the present work, asymptotic methods are used to derive new expressions for the law of the wall, for the law of the wake and for the skin-friction and the Stanton number equations, for compressible turbulent boundary layers with heat and mass transfer.
Freire, Atila Pantaleão Silva, Cruz, Daniel Onofre de Almeida, Pellegrini, Cláudio de Castro   +2 more
core   +1 more source

Machine Learning‐Supported Analysis for Predicting and Visualizing Nonlinear Relationships Between Material Properties in Electroplated Chromium Layers

Advanced Engineering Materials, EarlyView.
This study applies machine learning regression to predict chromium layer thickness in decorative trivalent chromium electroplating, using 441 experiments from laboratory‐scale (1L) and pilot‐scale (14L) setups. Tree‐based models, particularly CatBoost, outperformed linear regression by capturing nonlinear parameter interactions (R2$R^2$ up to 0.77 ...
Christoph Baumer, Christopher Mai, Luca Eisentraut, Andreas Bund, Ricardo Buettner   +4 more
wiley   +1 more source

Mass transfer coefficient for volatilization of volatile organic compounds from wastewater [PDF]

Songklanakarin Journal of Science and Technology (SJST), 2006
Volatilization of volatile organics compounds (VOCs) from wastewater is recognized as an important source that caused air pollution today. In air pollution management regarding VOCs emission to atmosphere, the amount of VOCs that released from wastewater
Intamanee, J., Chungsiriporn, J., Saeoung, S., Bunyakan, C.   +3 more
doaj  

DigiChrom: A Domain Ontology for Semantic Representation of Trivalent Chromium Platings and Its Large Language Model‐Based Alignment With Multiple Mid‐Level Ontologies

Advanced Engineering Materials, EarlyView.
Digitalizing electroplating requires both domain knowledge and interoperability. This work introduces PlatOn, a domain ontology for trivalent chromium plating and coating characterization, and a hybrid pipeline that aligns it to a mid‐level reference ontology by combining eight similarity metrics with language model reasoning. Expert‐validated mappings
Janik Harter, Elena Garcia Trelles, Christoph Schweizer, Thomas Seifert, Christoph Baumer, Mahmoud Elkady, Katja Feige, Daniel Grimme, Edgar Hoffmann, Andreas Waibel, Anke Walter   +10 more
wiley   +1 more source

OntOMat: Toward Ontology‐Based Product and Process Design Engineering and Optimization Solutions Fueling Circular Value Chains

Advanced Engineering Materials, EarlyView.
The OntOMat ontology establishes a structured framework for polymer matrix fiber reinforced composite materials, integrating manufacturing processes, characterization methods, and multiscale design through the VDI/VDE 3682 formalized process description standard.
Nicolas Christ, Jörg Hohe, Martin Kördel, Michael Giese, Niklas Toffert, Christian Seidel, Olaf Rehme, Patrik Schneider, Oliver Focke, Elie Abi Aoun, Claas Falldorf, Beñat Gutierrez, Alexandra Kühn, Sven Torstrick-von der Lieth, Christoph Herden, Erik Johannsen, Jan‐Uwe R. Schmidt, Felix Winkelmann, Andreas Schott, Daniel Schott   +19 more
wiley   +1 more source

Experimental Study on the Boiling Heat Transfer Characteristics in Micro-channel with Two Different Working Medium

Zhileng xuebao, 2016
Experiments are performed in rectangular micro-channels (dH =0.293 mm) under the condition of different mass flux and heat flux to evaluate the flow boiling heat transfer characteristics with deionized water and anhydrous ethanol.
Chen Yumin, Liu Dongyao
doaj  

Supercritical Fluid Extraction of β-Carotene from Crude Palm Oil Using CO2 in a Bubbler Extractor: Mass Transfer Study [PDF]

Iranian Journal of Chemistry & Chemical Engineering, 2014
In this study, the diffusivity and volumetric mass transfer coefficients for the extraction of β-carotene from crude palm oil using CO2 solvent in supercritical fluid were determined in the pressure range of 7.5-17.5 MPa and temperature range of 80-120 ...
Reza Davarnejad, Norazlila Mohammad Niza, Shahrzad Arpanahzadeh, Melika Zakeri   +3 more
doaj  

Superlubricity and Corrosion Inhibition Properties of Solvate Ionic Liquids in Hybrid Carbon Fiber Reinforced Plastic–Steel Interfaces

Advanced Engineering Materials, EarlyView.
Solvate ionic liquids lubrication reduced the coefficient of friction by ∼60% compared to dry sliding, reaching steady‐state values as low as 0.04–0.05. Corrosion weight‐loss measurements in 1 M HCl further demonstrated significant inhibition behavior, with only 100 ppm of [Li(G3)][TFSI] (∼68.5 μL/L) reducing corrosion‐product weight loss by 63 ...
Sameh Dabees, Timothy Harte, Bhagya Dharmasiri, Y. Athulya Wickramasingha, David J. Hayne, Daniel J. Eyckens, Luke C. Henderson   +6 more
wiley   +1 more source