Academic literature on the topic 'Discrete evaporation'

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Journal articles on the topic "Discrete evaporation"

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Li, Xinhu, and Fengzhi Shi. "Salt precipitation and evaporative flux on sandy soil with saline groundwater under different evaporation demand conditions." Soil Research 60, no. 2 (2021): 187–96. http://dx.doi.org/10.1071/sr21111.

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Context Salt precipitation and its influence on evaporation have been widely studied in recent years. However, the evolution process of salt precipitation and evaporative flux is poorly understood under various evaporation demand (ED) rate condition, which is defined as the evaporation rate of distilled water from soil under constant radiation conditions. Aims and methods This study investigated the evolution of salt crust and evaporative flux on sand soil columns with fixed saline groundwater at a depth of 20 cm under four ED conditions (29.5, 21.5, 9.0 and 4.0 mm day−1). Key results Evaporat
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Som, S. K., A. K. Mitra, and S. P. Sengupta. "Second Law Analysis of Spray Evaporation." Journal of Energy Resources Technology 112, no. 2 (1990): 130–35. http://dx.doi.org/10.1115/1.2905719.

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A second law analysis has been developed for an evaporative atomized spray in a uniform parallel stream of hot gas. Using a discrete droplet evaporation model, an equation for entropy balance of a drop has been formulated to determine numerically the entropy generation histories of the evaporative spray. For the exergy analysis of the process, the rate of heat transfer and that of associated irreversibilities for complete evaporation of the spray have been calculated. A second law efficiency (ηII), defined as the ratio of the total exergy transferred to the sum of the total exergy transferred
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Corda, Christian. "Spacetime can be neither discrete nor continuous." Modern Physics Letters A 33, no. 12 (2018): 1850069. http://dx.doi.org/10.1142/s0217732318500694.

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We show that our recent Bohr-like approach to black hole (BH) quantum physics implies that spacetime quantization could be energy-dependent. Thus, in a certain sense, spacetime can be neither discrete nor continuous. Our approach also permits to show that the “volume quantum” of the Schwarzschild spacetime increases with increasing energy during BH evaporation and arrives at a maximum value when the Planck scale is reached and the generalized uncertainty principle (GUP) prevents the total BH evaporation. Remarkably, this result does not depend on the BH original mass. The interesting consequen
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Lahaye, T., and D. Gu�ry-Odelin. "Discrete-step evaporation of an atomic beam." European Physical Journal D 33, no. 1 (2005): 67–75. http://dx.doi.org/10.1140/epjd/e2005-00007-y.

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Ghiaasiaan, S. M. "Thermal-Hydraulics of OC-OTEC Spout Flash Evaporators." Journal of Energy Resources Technology 114, no. 3 (1992): 187–96. http://dx.doi.org/10.1115/1.2905940.

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A mechanistic model was developed for the thermal-hydraulic processes in the spout flash evaporator of an OC-OTEC plant. Nonequilibrium, two-fluid, conservation equations were solved for the two-phase flow in the spout, accounting for evaporation at the gas-liquid interface, and using a two-phase flow regime map consisting of bubbly, churn-turbulent and dispersed droplet flow patterns. Solution of the two-phase conservation equations provided the flow conditions at the spout exit, which were used in modeling the fluid mechanics and heat transfer in the evaporator, where the liquid was assumed
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Ter-Mkrtich’yan, G. G., N. A. Mikerin, V. V. Glaviznin, A. A. Tseytlin, A. B. Malyshev, and Yu G. Ter-Mkrtich’yan. "Evaporation generation in the vehicle fuel tank. Canister feed strategy optimization." Trudy NAMI, no. 2 (July 12, 2023): 6–17. http://dx.doi.org/10.51187/0135-3152-2023-2-6-17.

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Introduction (problem statement and relevance). In addition to the toxic substances generated during fuel combustion in the engine, the vehicle generates a significant amount of hydrocarbons in the form of fuel vapors generated as a result of evaporation from the fuel tank and fuel system components. The evaporation process parameters and the amount of fuel evaporations are determined by dynamics of fuel heating in the tank in various vehicle operation modes. Modern requirements for the limit level of emissions caused by evaporation become much stricter. Therefore, the solution of the task of
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Kabil, Islam, Mansour Al Qubeissi, Jihad Badra, et al. "An Improved Prediction of Pre-Combustion Processes, Using the Discrete Multicomponent Model." Sustainability 13, no. 5 (2021): 2937. http://dx.doi.org/10.3390/su13052937.

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An improved heating and evaporation model of fuel droplets is implemented into the commercial Computational Fluid Dynamics (CFD) software CONVERGE for the simulation of sprays. The analytical solutions to the heat conduction and species diffusion equations in the liquid phase for each time step are coded via user-defined functions (UDF) into the software. The customized version of CONVERGE is validated against measurements for a single droplet of n-heptane and n-decane mixture. It is shown that the new heating and evaporation model better agrees with the experimental data than those predicted
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Pohl, K. R., P. H. Regan, J. W. Arrison та D. P. Balamuth. "Origin of correlations between evaporation protons and discrete γ rays in heavy-ion fusion-evaporation reactions". Physical Review C 49, № 3 (1994): 1372–78. http://dx.doi.org/10.1103/physrevc.49.1372.

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Basile, Giada, Dario Benedetto, Emanuele Caglioti, and Lorenzo Bertini. "Large deviations for a binary collision model: energy evaporation." Mathematics in Engineering 5, no. 1 (2022): 1–12. http://dx.doi.org/10.3934/mine.2023001.

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<abstract><p>We analyze the large deviations for a discrete energy Kac-like walk. In particular, we exhibit a path, with probability exponentially small in the number of particles, that looses energy.</p></abstract>
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Samimi Abianeh, O., and C. P. Chen. "A discrete multicomponent fuel evaporation model with liquid turbulence effects." International Journal of Heat and Mass Transfer 55, no. 23-24 (2012): 6897–907. http://dx.doi.org/10.1016/j.ijheatmasstransfer.2012.07.003.

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Dissertations / Theses on the topic "Discrete evaporation"

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Setta, Mario. "Multiscale numerical approximation of morphology formation in ternary mixtures with evaporation : Discrete and continuum models for high-performance computing." Thesis, Karlstads universitet, Institutionen för matematik och datavetenskap (from 2013), 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-85036.

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We propose three models to study morphology formations in interacting ternary mixtures with the evaporation of one component. Our models involve three distinct length scales: microscopic, mesoscopic, and respectively, macroscopic. The real-world application we have in mind concerns charge transport through the heterogeneous structures arising in the fabrication of organic solar cells. As first model, we propose a microscopic 3-spins lattice dynamics with short-range interactions between the considered species. This microscopic model is approximated numerically via a Monte Carlo Metropolis-base
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Scherer, Caio Sarmento. "Efeitos de evaporação em gases rarefeitos." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2009. http://hdl.handle.net/10183/17889.

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Neste trabalho, o fenômeno de evaporação em gases rarefeitos e analisado, para o caso de uma espécie de gás bem como de misturas binárias. Evaporação fraca e forte são consideradas para escoamentos de gases em canal e semi-espaco. Também e investigado o fenômeno conhecido como reverso de temperatura, típico de gases em estado de rarefação. O método ADO, uma versão analítica do método de ordenadas discretas, é utilizado para construção de soluções em forma fechada para os diversos problemas e quantidades de interesse, como perfis de temperatura e fluxos de calor. Para o caso de um gás, uma solu
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Бордун, І. О. "Люмінесценція чистих та активованих європієм тонких плівок Y[2]O[3]". Thesis, Сумський державний університет, 2017. http://essuir.sumdu.edu.ua/handle/123456789/64781.

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Тонкі плівки на основі Y2O3 широко використовуються при створенні дисплеїв, сцинтиляторів, засобів для запису та візуалізації інформації. Ефективність люмінесценції цих плівок сильно залежить як від методу, так і від умов одержання. У зв’язку з цим в роботі досліджуються спектри фотолюмінесценції (ФЛ) та збудження люмінесценції тонких плівок Y2O3, одержаних різними методами та взаємозв’язок спектрів випромінювання з умовами одержання.
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Veran-Tissoires, Stéphanie. "Sur le phénomène de cristallisation discrète à la surface ou à l'intérieur d'un milieu poreux." Thesis, Toulouse, INPT, 2011. http://www.theses.fr/2011INPT0023/document.

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L’évaporation d’eau chargée en sels fait partie des processus de dégradation d’un milieu poreux. Lors de l’évaporation, les sels vont s’accumuler à l’interface liquide-gaz, pouvant aller jusqu’à la cristallisation. Lors de la cristallisation, des contraintes importantes sont exercées sur la matrice solide du milieu poreux, ce qui à terme peut la détériorer.Les travaux présentés ici portent sur l’évaporation d’une solution de NaCl en situation de mèche et se focalisent sur les phénomènes de transport jusqu’à la cristallisation. Nous avons analysé le lien entre le transport de la vapeur, l’écoul
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Book chapters on the topic "Discrete evaporation"

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De León Portilla, Paulina, Ana Lilia González Ronquillo, and Enrique Sánchez Mora. "Theoretical and Experimental Study on the Functionalization Effect on the SERS Enhancement Factor of SiO2-Ag Composite Films." In Silver Micro-Nanoparticles - Properties, Synthesis, Characterization, and Applications. IntechOpen, 2021. http://dx.doi.org/10.5772/intechopen.97028.

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Herein we addressed a study to determine the enhancement factor (EF) of the Raman signal reached by composite films with two main components, Ag nanoparticles and SiO2 spheres. The study involves the synthesis, structural composition and optical response by using experimental techniques and theoretical-numerical modeling. A colloid with single NPs and agglomerates of them, with a tannic acid layer on its surface, was produced. Separately, porous SiO2 spheres were obtained. A mixture of both, Ag NPs and SiO2 particles was used to produce the films by solvent evaporation method. It is shown that
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Conference papers on the topic "Discrete evaporation"

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Dhillon, Navdeep S., Jim C. Cheng, and Albert P. Pisano. "Heat Transfer due to Microscale Thin Film Evaporation From the Steady State Meniscus in a Coherent Porous Silicon Based Micro-Columnated Wicking Structure." In ASME 2011 International Mechanical Engineering Congress and Exposition. ASMEDC, 2011. http://dx.doi.org/10.1115/imece2011-65057.

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A numerical fluid flow and heat transfer model is presented in order to study the evaporation characteristics of a stationary thin film liquid-vapor meniscus. The model is used to evaluate the evaporative heat transfer performance of micron-size rectangular channels on the surface of the secondary wick, inside a micro-columnated coherent porous silicon wick design. The shape of the liquid-vapor meniscus in the channel is obtained by solving the Young-Laplace equation, using a surface energy minimizing algorithm. Mass, momentum and energy equations are then solved in the liquid domain using a d
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Nishikawa, Hiroyuki, Shinya Maenosono, Yukio Yamaguchi, and Tatsuya Okubo. "Evaporation-Induced Self-Assembly of Colloidal Particles into Two-Dimensional Array during Drying." In Third International Conference on Discrete Element Methods. American Society of Civil Engineers, 2002. http://dx.doi.org/10.1061/40647(259)45.

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Gusarov, A. V. "Discrete Velocity Numerical Approach to Strong Evaporation of Graphite." In RAREFIED GAS DYNAMICS: 24th International Symposium on Rarefied Gas Dynamics. AIP, 2005. http://dx.doi.org/10.1063/1.1941612.

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Pan, Zhenhai, and Hao Wang. "A Numerical Investigation on Micro Particle Dynamics Near an Evaporating Meniscus." In ASME 2009 Second International Conference on Micro/Nanoscale Heat and Mass Transfer. ASMEDC, 2009. http://dx.doi.org/10.1115/mnhmt2009-18049.

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Clarifying the particle dynamics near an evaporating meniscus in microfluidics makes great sense in many biological and chemical processes such as analyte enrichment, particle detection and cell position control. In the present work, a numerical model is developed to describe the mass transport and particle dynamics near an evaporating meniscus sustained at the outlet of a micro PDMS tube. The micro flow field is simulated in Computational Fluid Dynamics (CFD) approach. Both the evaporation at the liquid-air interface and the vapor diffusion in air are considered. The convection near meniscus
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Al Qubeissi, Mansour, Sergei Sazhin, and Nawar Al-Esawi. "Models for automotive fuel droplets heating and evaporation." In ILASS2017 - 28th European Conference on Liquid Atomization and Spray Systems. Universitat Politècnica València, 2017. http://dx.doi.org/10.4995/ilass2017.2017.4754.

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The paper presents recent approaches to the modelling of heating and evaporation of automotive fuel droplets with application to biodiesel, diesel, gasoline, and blended fuels in conditions representative of internal combustion engines. The evolutions of droplet radii and temperatures for gasoline, diesel, and a broad range of biodiesel fuels and their selective diesel fuel blends have been predicted using the Discrete Component model (DCM). These mixtures combine up to 112 components of hydrocarbons and methyl esters. The results are compared with the predictions of the case when blended dies
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Babovsky, Hans. "Discrete velocity models: Bifurcations, hydrodynamic limits and application to an evaporation condensation problem." In 30TH INTERNATIONAL SYMPOSIUM ON RAREFIED GAS DYNAMICS: RGD 30. Author(s), 2016. http://dx.doi.org/10.1063/1.4967581.

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Stegemann, Danica, Sebastian Rakowski, Sven Pagel, and Guenter P. Merker. "Modeling the Evaporation of Multicomponent Diesel Droplets." In ASME 2004 International Mechanical Engineering Congress and Exposition. ASMEDC, 2004. http://dx.doi.org/10.1115/imece2004-59197.

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A multicomponent fuel evaporation model was developed to describe diesel fuels. This model is based on the principles of continuous thermodynamics. In contrast to conventional. models, each component is not described by discrete relations for energy and mass, but the whole mixture is characterized by a distribution function. In most CFD (computational fluid dynamics)-applications the droplet interior is assumed to be well mixed, this means that composition and temperature are spatially constant inside the droplet. But this assumption is only correct in the case of turbulent mixture with high v
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Nicodin, Ioana. "Evaporation And Condensation On A Plane Condensed Phase In The Basis Of Discrete Kinetic Theory." In RAREFIED GAS DYNAMICS: 23rd International Symposium. AIP, 2003. http://dx.doi.org/10.1063/1.1581602.

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Hu, Yong, and Eva Gutheil. "Numerical Simulation of Turbulent Spray Flows Using Transported PDF Methods." In 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/fedsm2014-22038.

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This paper presents a numerical study of a turbulent acetone spray flow, where the gas phase model includes a transported joint probability density function (PDF) of the gas phase velocity and the mixture fraction. This approach greatly benefits from the fact that the spray evaporation rate appears in closed form, and no additional modeling is required, whereas the molecular mixing requires closure. This is achieved through use of the extended interaction-by-exchange-with-the-mean (IEM) model with an additional term to account for spray evaporation. The dispersed liquid phase is described thro
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Chen, Gang, Shuhong Liu, Guangjun Cao, et al. "A New Cavitation Model Based on Evaporation and Condensation Theory." In ASME 2009 Fluids Engineering Division Summer Meeting. ASMEDC, 2009. http://dx.doi.org/10.1115/fedsm2009-78180.

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Cavitation is a phenomenon which occurs where the local pressure falls off under the vapor pressure. Over the past few years, numerical simulation models for cavitation have been developed significantly in order to investigate the mechanism of cavitation. In the paper, A local homogeneous cavitation model based on the theory of evaporation and condensation has been deduced, which is used to describe the phase change between water and vapor. The RNG k–ε turbulence model is used to simulate the turbulent flow and the finite volume method is employed to discrete the governing equations. The effec
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