Results 61 to 70 of about 10,991,658 (202)

Gas Flow and Heat Transfer in an Enclosure Induced by a Sinusoidal Temperature

Journal of Applied Fluid Mechanics, 2019
The heat transfer and flow characteristics of rarefied gas confined within a square cavity are investigated. The cavity upper-wall is subjected to a symmetrical sinusoidal temperature with respect to its midline.
J. Baliti, M. Hssikou, M. Alaoui
doaj  

Data-driven nonlinear constitutive relations for rarefied flow computations

Advances in Aerodynamics, 2021
To overcome the defects of traditional rarefied numerical methods such as the Direct Simulation Monte Carlo (DSMC) method and unified Boltzmann equation schemes and extend the covering range of macroscopic equations in high Knudsen number flows, data ...
Wenwen Zhao, Lijian Jiang, Shaobo Yao, Weifang Chen   +3 more
doaj   +1 more source

Simulation of Potassium Condensation by DSMC Method.

Journal of the Atomic Energy Society of Japan / Atomic Energy Society of Japan, 1994
The evaporation and condensation phenomena of alkali metals are not correctly described by the analysis using the continuum equations, because discontinuity of physical quantities such as temperature at the vapor-liquid interface occurs in the phase change process. The authors apply the direct simulation Monte Carlo (DSMC) method, which is based on the
SUGIYAMA, Ken-ichiro, YOSHIDA, Hideji, ISHIGURO, Ryoji   +2 more
openaire   +2 more sources

Application of the MCMC Method for the Calibration of DSMC Parameters [PDF]

AIP Conference Proceedings, 2011
A Markov Chain Monte Carlo (MCMC) algorithm was employed to obtain a calibrated distribution for the hard sphere diameter, the VHS reference diameter, and the temperature viscosity exponent of argon, for use in the Direct Simulation Monte Carlo (DSMC) method.
Strand, J. S., Goldstein, D. B.
openaire   +2 more sources

Reconstructing Europa's Atmosphere From H2+ ${\mathbf{H}}_{\mathbf{2}}^{+}$ Pickup Ions Detected During the Juno PJ45 Flyby

Journal of Geophysical Research: Planets, Volume 131, Issue 8, August 2026.
Abstract We use a suite of single‐species (H2 ${\mathrm{H}}_{2}$) and multispecies (H2+O2+H+O ${\mathrm{H}}_{2}+{\mathrm{O}}_{2}+\mathrm{H}+\mathrm{O}$) Direct Simulation Monte Carlo models of Europa's atmosphere to interpret the H2+ ${\mathrm{H}}_{2}^{+}$ pickup ions detected by Juno at distances beyond 2 $2$ Europa radii RE $\left({R}_{E}\right ...
Shane R. Carberry Mogan, Andrew R. Poppe, Lucas Liuzzo, Jamey R. Szalay, Sean P. Ellis, Robert E. Johnson, Lorenz Roth   +6 more
wiley   +1 more source

On the Expedient Solution of the Boltzmann Equation by Modified Time Relaxed Monte Carlo (MTRMC) Method

Journal of Applied Fluid Mechanics, 2018
In the present study, a modified time relaxed Monte Carlo (MTRMC) method is developed for numerical solution of the Boltzmann equation in rarefied regimes.
M. Eskandari, S. Salman Nourazar
doaj  

Multiscale simulation of rarefied gas dynamics via direct intermittent GSIS-DSMC coupling

Advances in Aerodynamics
The general synthetic iterative scheme (GSIS) has proven its efficacy in modeling rarefied gas dynamics, where the steady-state solutions are obtained after dozens of iterations of the Boltzmann equation, with minimal numerical dissipation even using ...
Liyan Luo, Lei Wu
doaj   +1 more source

Integrating agro‐residue valorization and clean hydrogen production: coconut fiber‐based catalysts for NaBH4 hydrolysis

Biofuels, Bioproducts and Biorefining, Volume 20, Issue 4, Page 1798-1820, July/August 2026.
Abstract A novel phosphoric acid‐treated green coconut fiber (GCF‐C) was developed as a catalyst for hydrogen production from the hydrolysis of sodium borohydride (NaBH4). Characterization techniques confirmed structural modifications, including X‐ray diffraction, scanning electron microscopy, X‐ray fluorescence, Fourier transform infrared, and ...
Isabelly Silveira Freitas, Francisco Izaias da Silva Aires, Dayana Nascimento Dari, Jacob Tchiyeke António Kandjila, Maurício Quintas Salamba, Diego Lomonaco, Monalisa Moura de Oliveira, Pierre Basílio Almeida Fechine, Rafael Leandro Fernandes Melo, Alan Silva de Menezes, Marcos Carlos de Mattos, Leonardo Farias Serafim, Maria Cristiane Martins de Souza, Ada Amelia Sanders Lopes, John Herbert da Silva Felix, Eveline de Abreu Menezes, José Cleiton Sousa dos Santos   +16 more
wiley   +1 more source

Clinical, Radiological, and Immunohistological Distinctions Between Limbic‐Predominant and Typical Alzheimer's Disease: A Systematic Review

Brain and Behavior, Volume 16, Issue 7, July 2026.
Abstract Background Alzheimer's disease (AD) is the most common cause of dementia worldwide and one of the leading causes of morbidity and mortality among elderly people. It is characterized by generalized brain atrophy, especially affecting the hippocampus and medial temporal lobe.
Guilherme Linha Secco, Kashif Qureshi, Murtaja Satea, Pedro Henrique Karpinski, Kim Wouters, Mateus Cordeiro Merlim da Silva, Sravan Reddy Ganta, Enzo von Quednow, Edgar Daniel Guzmán‐Ríos, Khalil St Brice, Mahi Dsouza, Ailton Fernandes Junior, Noor Najah Noori, Bipin Chaurasia, Kivanc Yangi   +14 more
wiley   +1 more source

Pumping Speed Measurement and Analysis for the Turbo Booster Pump

International Journal of Rotating Machinery, 2004
This study applies testing apparatus and a computational approach to examine a newly designed spiral-grooved turbo booster pump (TBP), which has both volume type and momentum transfer type vacuum pump functions, and is capable of operating at optimum ...
R. Y. Jou, S. C. Tzeng, J. H. Liou
doaj   +1 more source