Results 71 to 80 of about 139,892 (279)

Study on Natural Gas Decarbonization Process Based on CO2 Desublimation Characteristics

Asia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT Natural gas decarbonization is a crucial processing step. In this study, the snow separation technology for removal of carbon dioxide in natural gas based on CO2 desublimation characteristics was introduced. The phase equilibrium calculation of CH4‐CO2 and N2‐CO2 system was carried out by using cubic equations of states (EOSs), and identified ...
Haiqin Wang, Jushi Cai, Zubin Zhang, Qishen Wu   +3 more
wiley   +1 more source

Machine learning of hidden variables in multiscale fluid simulation

Machine Learning: Science and Technology, 2023
Solving fluid dynamics equations often requires the use of closure relations that account for missing microphysics. For example, when solving equations related to fluid dynamics for systems with a large Reynolds number, sub-grid effects become important ...
Archis S Joglekar, Alexander G R Thomas
doaj   +1 more source

Modeling of micro flows using perturbation method [PDF]

, 2011
This paper was presented at the 3rd Micro and Nano Flows Conference (MNF2011), which was held at the Makedonia Palace Hotel, Thessaloniki in Greece.
3rd Micro and Nano Flows Conference (MNF2011), Khalili, MS, Saberian, A, Saghafian, M, Shirani, E   +4 more
core  

The Role of Intraparticle Diffusion in Kinetic Model Discrimination: Proof of Concept Testing for Methanol Dehydration

Asia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT The rate of a heterogeneous catalytic process may simultaneously be described by several rate equations. In this case, discrimination between the plausible kinetic models is required. An intrinsic kinetic model of a heterogeneous catalytic process may successively be discriminated by the transition from a reaction rate‐limited regime to an ...
Oleksii Zhokh, Andrii Trypolskyi, Peter Strizhak   +2 more
wiley   +1 more source

A New Formulation for Prediction of Permeability of Nano Porous Structures using Lattice Botzmann Method

Journal of Applied Fluid Mechanics, 2017
The standard lattice Boltzmann equation, LBE, is inadequate for simulating gas flows in nano scale flows with Knudsen numbers higher than 0.1. In the present study, rarefied gas flow in nano porous structures is simulated using the modified Lattice ...
M. Mostafavi, A. H. Meghdadi Isfahani
doaj  

Discrete unified gas kinetic scheme for all Knudsen number flows: II. Compressible case

, 2014
This paper is a continuation of our earlier work [Z.L. Guo {\it et al.}, Phys. Rev. E {\bf 88}, 033305 (2013)] where a multiscale numerical scheme based on kinetic model was developed for low speed isothermal flows with arbitrary Knudsen numbers. In this
Guo, Zhaoli, Wang, Ruijie, Xu, Kun
core   +2 more sources

Development of a Mechanically Regenerating Desublimator for Freeze‐Drying Systems in the Food Industry

Chemie Ingenieur Technik, EarlyView.
Thermal defrosting limits desublimator efficiency in freeze‐drying. This review and case study compares thermal versus mechanical regeneration, links frost properties and external heat transfer to energy demand, and summarizes pilot‐scale scraping results enabling single‐unit, continuous lyophilization.
Moritz Krummenacher, Mirko Kleingries, Edgar Zimmer, Roman Blättler   +3 more
wiley   +1 more source

Statistical Error in Particle Simulations of Hydrodynamic Phenomena

, 2002
We present predictions for the statistical error due to finite sampling in the presence of thermal fluctuations in molecular simulation algorithms. Specifically, we establish how these errors depend on Mach number, Knudsen number, number of particles ...
Alejandro L. Garcia, Alexander, Alexander, Alexander, Allen, Bird, Feller, Frenkel, Fürth, Gang He, Garcia, Garcia, Garcia, Ghosal, Hadjiconstantinou, Hadjiconstantinou, Johnson, Landau, Landau, Landau, Liu, Malek-Mansour, Martin Z. Bazant, Nicolas G. Hadjiconstantinou, Taylor   +24 more
core   +1 more source

Direct-drive DT implosions with Knudsen number variations

Journal of Physics: Conference Series, 2016
Direct-drive implosions of DT-filled plastic-shells have been conducted at the Omega laser facility, measuring nuclear yields while varying Knudsen numbers (i.e., the ratio of mean free path of fusing ions to the length of fuel region) by adjusting both shell thickness (e.g., 7.5, 15, 20, 30 μm) and fill pressure (e.g., 2, 5, 15 atm).
Y Kim, H W Herrmann, N M Hoffman, M J Schmitt, P A Bradley, S Gales, C J Horsfield, M Rubery, A Leatherland, M Gatu Johnson, J A Frenje, V Yu Glebov   +11 more
openaire   +1 more source

Release of multicomponent pheromones from porous fibres

The Canadian Journal of Chemical Engineering, EarlyView.
Abstract Surface engineering empowers a polymer exclusion net to serve dual functions: physical exclusion and pheromonal release, allowing for pest control in agricultural crops. In previous work, a net woven from porous fibres releasing simple, single‐component alarm pheromones showed promising results in field tests.
Darius Klassen, William Simon, Olivier Ngoy, Mikaël Larose, Catherine Pouchet, Gérald Chouinard, Marie‐Josée Dumont, Jason R. Tavares   +7 more
wiley   +1 more source