Littérature scientifique sur le sujet « Single particle regime binary mixtures »
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Articles de revues sur le sujet "Single particle regime binary mixtures"
Alghamdi, Yusif A., Zhengbiao Peng, Caimao Luo, Zeyad Almutairi, Behdad Moghtaderi et Elham Doroodchi. « Systematic Study of Pressure Fluctuation in the Riser of a Dual Inter-Connected Circulating Fluidized Bed : Using Single and Binary Particle Species ». Processes 7, no 12 (1 décembre 2019) : 890. http://dx.doi.org/10.3390/pr7120890.
Texte intégralPrager, Michael, Da Zhang et Al Weiss. « Rotational Tunnelling in Binary Tetramethylmetal Mixtures ». Zeitschrift für Naturforschung A 50, no 4-5 (1 mai 1995) : 405–12. http://dx.doi.org/10.1515/zna-1995-4-513.
Texte intégralLEPTOUKH, GREGORY, BOWE STRICKLAND et CHRISTOPHER ROLAND. « PHASE SEPARATION OF TWO-DIMENSIONAL FLUID MIXTURES IN THE DISSIPATIVE REGIME ». Modern Physics Letters B 10, no 13 (10 juin 1996) : 577–98. http://dx.doi.org/10.1142/s021798499600064x.
Texte intégralChen, Heng Zhi, et Zheng Kui Guo. « Characteristics of Mixing/Segregation in a Bubbling/Slugging Fluidized Bed with Binary Mixtures ». Advanced Materials Research 396-398 (novembre 2011) : 322–25. http://dx.doi.org/10.4028/www.scientific.net/amr.396-398.322.
Texte intégralBERGEON, A., D. HENRY, H. BENHADID et L. S. TUCKERMAN. « Marangoni convection in binary mixtures with Soret effect ». Journal of Fluid Mechanics 375 (25 novembre 1998) : 143–77. http://dx.doi.org/10.1017/s0022112098002614.
Texte intégralPerera, Aurélien, Martina Požar et Bernarda Lovrinčević. « Camel back shaped Kirkwood–Buff integrals ». Journal of Chemical Physics 156, no 12 (28 mars 2022) : 124503. http://dx.doi.org/10.1063/5.0084520.
Texte intégralShao, Yunqi, Aristeidis Voliotis, Mao Du, Yu Wang, Kelly Pereira, Jacqueline Hamilton, M. Rami Alfarra et Gordon McFiggans. « Chemical composition of secondary organic aerosol particles formed from mixtures of anthropogenic and biogenic precursors ». Atmospheric Chemistry and Physics 22, no 15 (2 août 2022) : 9799–826. http://dx.doi.org/10.5194/acp-22-9799-2022.
Texte intégralStrehle, F., et Th Dorfmüller. « Raman spectroscopic study of the single particle dynamics of CS2in liquid binary mixtures with CCl4 ». Molecular Physics 80, no 2 (10 octobre 1993) : 449–60. http://dx.doi.org/10.1080/00268979300102381.
Texte intégralSemenov, I. L., A. G. Zagorodny et I. V. Krivtsun. « Numerical Study of Grain Charging Kinetics on the Basis of BGK Kinetic Equation ». Ukrainian Journal of Physics 56, no 2 (16 février 2022) : 138. http://dx.doi.org/10.15407/ujpe56.2.138.
Texte intégralFang, Huang, Michael F. Hagan et W. Benjamin Rogers. « Two-step crystallization and solid–solid transitions in binary colloidal mixtures ». Proceedings of the National Academy of Sciences 117, no 45 (29 octobre 2020) : 27927–33. http://dx.doi.org/10.1073/pnas.2008561117.
Texte intégralThèses sur le sujet "Single particle regime binary mixtures"
Izzo, Maria Grazia. « High frequency dynamics of fluid binary mixtures ». Doctoral thesis, Università degli studi di Trieste, 2010. http://hdl.handle.net/10077/3585.
Texte intégralThis thesis is aimed to the study of dynamics in binary fluid mixtures by means of inelastic scattering spectroscopies. Nowadays the understanding of these dynamics is still unsatisfactory. In particular, any model is able to adequately describe collective dynamics beyond the hydrodynamic limit. In such a low momentum (k) and frequency () transfer limit, the collective dynamics is characterized by a single (adiabatic) longitudinal acoustic mode accounting for sound propagation. At frequencies above the hydrodynamics ones a transition towards a decoupled dynamic regime is expected. This is characterized by two distinct modes, namely the slow (low-) and fast (high-) sounds. The microscopic mechanisms driving such a transition, so as the related macroscopic quantities, are still unclear, even in an heuristic point of view. In this work the collective dynamics of neutral and ionic mixtures are investigated with the aim to shed light in this debated issue. He/Ne mixtures have been studied by means of Inelastic X-ray Scattering (IXS) spectroscopy. Exploiting the lack of kinematic limitations peculiar of this technique, the high frequency (>THz) dynamics has been analyzed from the mesoscopic up to the high-k range, where the dynamic response of the system can be described using the Impulse Approximation (IA). This kind of study is of particular interest for disparate mass mixtures, since inefficient kinetic energy exchanges between light and heavy particles taking place on very short time scales are expected to greatly influence the phenomenology of the aforementioned dynamic decoupling. The prototype ionic mixture, RbF, also, has been investigated by means of Inelastic Neutron Scattering (INS) spectroscopy. Ionic mixtures are particularly suited to investigate the role played by optic-like excitations (related to concentration fluctuations) in the transition from the hydrodynamics to the decoupled regime. Indeed, these kind of excitations are expected to be emphasized because of the long range Coulomb interactions. Conversely at k’s enough high, i.e. k>k* with k* dependent on the values of the electric conduction coefficient and the adiabatic sound velocity, they are expected to behave like neutral binary mixtures. The study of molten RbF has been, then, focused on the characterization of collective dynamics in the transition region, which is more difficultly accessible by IXS because of instrumental limitations. IXS data on He0.8Ne0.2 mixture have been analyzed using a generalization of the viscoelastic function, which, in our knowledge, has been applied for the first time to this purpose. This kind of data analysis permitted to extrapolate the partial dynamical structure factors related to He-He, Ne-Ne and He-Ne density fluctuations. The adiabatic and high frequency sound velocity as well as the relaxation time associated to each mixture component has been calculated from fitting parameters. The analysis of the extrapolated relaxation times permitted to define, in the probed range, two k-region depending on the behavior of such quantity. At the higher k probed the relaxation times of single components can be well described by the respective single specie collision time, indicating a complete dynamics decoupling. At lower k, conversely, the relaxation times show a deviation to respect the collisional times. The study of the same mixture in three different thermodynamic conditions, revealed a common k trend of the single component relaxation times once proper normalization, made by means of kinetic parameters, has been done. An empirical expression has then been proposed. The result can be interpreted in the framework of ‘two temperature theory’, based on the assumption that in disparate mass binary mixtures inefficient kinetic energy exchanges induce a two step process for the relaxation of density fluctuations towards the thermodynamic equilibrium. These processes are characterized by two distinct timescales: the intra-specie collision time, where each specie subsystem reaches a condition of ‘local’ equilibrium associated with a ‘local’ temperature and a characteristic time for the equilibration of the microscopic temperatures to the thermodynamic temperature trough inter-specie collisions. A further corroboration of the above picture has been found from the analysis of IXS spectra in the IA region, which allowed extrapolating the momentum distribution functions of the specie subsets. An anomalous behavior has been noticed on the He momentum distribution function, i.e. the apparent temperature associated to the momentum distribution is about 40 K higher than the macroscopic one. This striking result can be straightforwardly interpreted as a fingerprint of the peculiar ‘two temperature’ equilibration process. INS experiment on molten RbF permitted to reveal the simultaneous presence of two dispersive collective modes in the transition region. The dispersive behavior (linear with k) and the characteristic energies permitted to exclude an optic-like nature for both excitations. The performed data analysis permitted also to extrapolate the value of the electrical conduction coefficient, founding a quite low value as compared with typical values of molten salts. An estimation of k* for the studied system emphasize the possibility that at the probed k it may be isomorphous to a neutral mixture. The observed phenomenology can be thus interpreted in terms of double sound propagation phenomenon, observed in rarefied non-ionic gaseous mixtures. Finally, an alternative interpretation of these experimental results can be qualitatively provided within the frame of the generalized collective mode approach. In this case the high frequency mode is identified with the extension of the adiabatic longitudinal sound mode beyond hydrodynamic limit that, in analogy to what observed in several fluids, follows a linear dispersion with an associated sound velocity larger than the adiabatic one. The low frequency mode could instead be associated with a propagating kinetic mode related to energy fluctuations (heat waves). In conclusion, an extensive analysis of high-frequency dynamics in binary mixtures has been reported. Particular emphasis has been devoted to the study of the sound decoupling phenomenon manifesting beyond the hydrodynamic region. The experimental results indicate that such a phenomenon is manifested in both neutral and ionic disparate mass binary mixtures. It can be related to microscopic dynamics, e.g. thermalization effects related to the inefficient kinetic exchange between lighter and heavier particles.
XXI Ciclo
1978
Chapitres de livres sur le sujet "Single particle regime binary mixtures"
Di Renzo, A., et F. P. Di Maio. « From Single Particle Drag Force to Segregation in Fluidised Beds ». Dans Discrete Element Modelling of Particulate Media, 3–9. The Royal Society of Chemistry, 2012. http://dx.doi.org/10.1039/bk9781849733601-00003.
Texte intégralActes de conférences sur le sujet "Single particle regime binary mixtures"
Trabelsi, Hamed, Nicolas Galanis et Jamel Orfi. « Simulation of Forced Convection Ice Slurry Flow in a Heated Tube ». Dans 2010 14th International Heat Transfer Conference. ASMEDC, 2010. http://dx.doi.org/10.1115/ihtc14-22633.
Texte intégralKulkarni, S., C. X. Lin et C. Ghenai. « Numerical Modeling of Solidification Process Using the Enthalpy-Porosity Technique ». Dans ASME 2005 Summer Heat Transfer Conference collocated with the ASME 2005 Pacific Rim Technical Conference and Exhibition on Integration and Packaging of MEMS, NEMS, and Electronic Systems. ASMEDC, 2005. http://dx.doi.org/10.1115/ht2005-72152.
Texte intégralChu, Xin, Stephen Yue et Phuong Vo. « A Study of the Mixed Powders Interaction Behavior Upon Impact in Cold Spray ». Dans ITSC2019, sous la direction de F. Azarmi, K. Balani, H. Koivuluoto, Y. Lau, H. Li, K. Shinoda, F. Toma, J. Veilleux et C. Widener. ASM International, 2019. http://dx.doi.org/10.31399/asm.cp.itsc2019p0853.
Texte intégralKanholy, Santhip Krishnan, et Francine Battaglia. « Modeling Approaches to Accurately Predict Minimum Fluidization Characteristics of Gas-Solid Fluidized Beds ». Dans ASME 2012 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/imece2012-88577.
Texte intégralChu, Xin, Hanqing Che, Stephen Yue et Phuong Vo. « Effects of Feedstock Mixing Composition on the Cold Sprayability of Bimodal Size 316L/Fe Powder Mixtures ». Dans ITSC2018, sous la direction de F. Azarmi, K. Balani, H. Li, T. Eden, K. Shinoda, T. Hussain, F. L. Toma, Y. C. Lau et J. Veilleux. ASM International, 2018. http://dx.doi.org/10.31399/asm.cp.itsc2018p0256.
Texte intégralLi, Yaofa, Benjamin M. Chan et Minami Yoda. « Experimental Studies of Nonisothermal Binary Fluids With Phase Change in Confined Geometries ». Dans ASME 2012 Third International Conference on Micro/Nanoscale Heat and Mass Transfer. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/mnhmt2012-75246.
Texte intégralEstejab, Bahareh, et Francine Battaglia. « A CFD Study of Existing Drag Models for Geldart A Particles in Bubbling Fluidized Beds ». Dans ASME 2014 4th Joint US-European Fluids Engineering Division Summer Meeting collocated with the ASME 2014 12th International Conference on Nanochannels, Microchannels, and Minichannels. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/fedsm2014-21134.
Texte intégralCurtis, Jennifer Sinclair. « Effect of Solids Loading, Reynolds Number, and Particle Size Distribution on Velocity Fluctuations in Gas-Particle Flows ». Dans ASME/JSME 2003 4th Joint Fluids Summer Engineering Conference. ASMEDC, 2003. http://dx.doi.org/10.1115/fedsm2003-45669.
Texte intégralMa, Ming, et Hamid Emami-Meybodi. « Diffusion-Based Multiphase Multicomponent Modeling of Cyclic Solvent Injection in Ultratight Reservoirs ». Dans SPE Annual Technical Conference and Exhibition. SPE, 2022. http://dx.doi.org/10.2118/210480-ms.
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