Results 11 to 20 of about 381 (160)

Acoustic Analogy for Multiphase or Multicomponent Flow [PDF]

Journal of Vibration and Acoustics, 2017
The Ffowcs Williams and Hawkings (FW-H) equation is widely used to predict sound generated from flow and its interaction with impermeable or permeable surfaces. Owing to the Heaviside function used, this equation assumes that sound only propagates outside the surface.
Mao, Yijun, Hu, Zhiwei
openaire   +2 more sources

On the simulation of multicomponent and multiphase compressible flows

CoRR, 2020
Accepted version. Final publication available at https://www.ercoftac.org/publications/ercoftac_bulletin/bulletin-125/
Rémi Abgrall, Paola Bacigaluppi, Barbara Re 0002   +2 more
openaire   +2 more sources

Transient multiphase multicomponent flow in porous media. [PDF]

International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts, 1973
Abstract A one-dimensional transient two-phase, two-component flow in a porous medium is investigated analytically. The flow is described by the use of a continuity equation for each component, a momentum equation for each phase, the first law of thermodynamics, state equations, and relations for the transport properties.
openaire   +4 more sources

Multicomponent, multiphase flow in porous media with temperature variation [PDF]

, 1990
Recovery of hydrocarbons from porous media is an ongoing concern. Advanced techniques augment conventional recovery methods by injecting fluids that favorably interact with the oil. These fluids interact with the oil by energy transfer, in the case of steam injection, or by mass transfer, as in a miscible gas flood. Often both thermal and compositional
Wingard, J. S., Orr Jr., F. M.
openaire   +2 more sources

Multiphase, Multicomponent Fluid Flow in Homogeneous and Heterogeneous Porous Media [PDF]

Revue de l'Institut Français du Pétrole, 1998
The flow of several components and several phases through a porous medium is generally described by introducing macroscopic mass-balance equations under the form of generalized dispersion equations. This model raises several questions that are discussed in this paper on the basis of results obtained from the volume averaging method, coupled with pore ...
Chella, R., Lasseux, D., Quintard, Michel   +2 more
openaire   +2 more sources

Extrusion‐Based Additive Manufacturing of Advanced Ceramics: Strengthening Mechanisms and Process Optimization Review

Advanced Engineering Materials, EarlyView.
This review comprehensively evaluates extrusion‐based additive manufacturing for advanced ceramics, detailing feedstock options and key process parameters. By critically addressing defect mechanisms like porosity and cracking, the work highlights optimization strategies through machine learning and advanced postprocessing.
Meisam Bakhtiari, Mohammad Hadi Sheikh‐Ansari, Avinash Borgaonkar, Mehran Dadkhah, Abdollah Saboori   +4 more
wiley   +1 more source

Fundamentals of Thermal Transport and Energy Conversion in Ultra‐High Temperature Ceramics: From Microscale Mechanisms to Macroscopic Properties

Advanced Science, EarlyView.
This review critically examines thermal transport and radiative properties of ultra‐high temperature ceramics for hypersonic flight, advanced nuclear systems, and next‐generation energy conversion devices. It explores phonon–photon–electron interactions, microstructural engineering, thermoelectric conversion, and machine learning‐accelerated multiscale
Zhipeng Pei, Yue Li, Jiayu Xing, Yue Zhu, Ru Zhang, Huan Wu, Zihao Qin, Gang Pei, Man Li   +8 more
wiley   +1 more source

PROCESSES OF BREAD BAKING IN OVEN CHAMBERS: CONTINUA-DISCRETE MODELING

Harčova Nauka ì Tehnologìâ
The paper substantiates the relevance of creating a universal mathematical model capable of describing a set of physical and technological processes occurring in multiphase and structurally inhomogeneous media under the action of heat flows.
V. Piddubny, I. Stadnyk, V. Fedoriv, S. Kraievska, А. Sabadosh, V. Kovbasa   +5 more
doaj   +1 more source

Atomic‐Level CuOx‐CoOx‐Pd Interfacial Engineering Enables Hierarchical Synergy for High‐Efficiency ORR Pathways and Boosted Power Output in Alkaline Fuel Cells

Advanced Science, EarlyView.
Atomically dispersed CuOx (CPCu‐1) forms isolated Cu–Ov sites that enable defect‐mediated O2 activation and fast electron/proton transfer via interfacial synergy. In contrast, thick CuOx clusters (CPCu‐10) promote a surface‐adsorption‐controlled pathway with intermediate accumulation, highlighting a mechanism switch from interfacial activation to ...
Yang‐Yang Hsu, Ching‐Hua Fan, Kuan‐Wen Wang, Kuang‐Kuo Wang, Nozomu Hiraoka, Hirofumi Ishii, Ting‐Shan Chan, Po‐Chun Chen, Tsan‐Yao Chen   +8 more
wiley   +1 more source

Heterostructured Materials for Room‐Temperature Na‐S Batteries: Directional Design Strategies and Multifaceted Applications

Advanced Science, EarlyView.
In this work, heterostructured materials for room‐temperature Na‐S batteries are comprehensively reviewed. The electrochemical mechanisms of Na‐S batteries based on various redox pathways are clarified. The intrinsic functionalities and design principles of heterostructured materials are summarized.
Yeqing Yang, Xue Li, Kunjie Zhu, Xiang‐Long Huang, Yun‐Xiao Wang   +4 more
wiley   +1 more source