Academic literature on the topic 'Mass transfer coefficients'

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'Mass transfer coefficients.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Journal articles on the topic "Mass transfer coefficients"

1

Geary, Denis F., Elizabeth A. Harvey, and J. Williamson Balfe. "Mass Transfer Area Coefficients in Children." Peritoneal Dialysis International: Journal of the International Society for Peritoneal Dialysis 14, no. 1 (January 1994): 30–33. http://dx.doi.org/10.1177/089686089401400106.

Full text
Abstract:
Objective Measurement of mass transfer area coefficients (MTAC) in children of different sizes to determine if solute transport varies with age and to compare with published adult values. Design Mass transfer area coefficients calculated from prospectively collected data in 28 selected patients. Participants All children starting maintenance peritoneal dialysis at the Hospital for Sick Children. Selected patients were also studied if hospitalized for unrelated reasons. Results Mean MTAC values for creatinine and glucose were 4.0 and 4.5 mL/min, respectively, both considerably lower than adult values. When scaled per 70 kg body weight, these results were greater, and when scaled per 1.73 m2 surface area, they were lower than reported adult values. The MTAC/kg body weight was inversely correlated to age. Conclusions Solute transport in children is directly related to age and does not approach adult values until later childhood. However, more rapid transport per unit body weight is observed in children and may reflect an increased effective peritoneal surface area.
APA, Harvard, Vancouver, ISO, and other styles
2

Wadso, Lars. "SURFACE MASS TRANSFER COEFFICIENTS FOR WOOD." Drying Technology 11, no. 6 (January 1993): 1227–49. http://dx.doi.org/10.1080/07373939308916897.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Sreenivasan, Krishnamurthy, and Dabir S. Viswanath. "Mass transfer coefficients in mixer-settlers." Journal of Applied Chemistry and Biotechnology 23, no. 3 (April 25, 2007): 169–74. http://dx.doi.org/10.1002/jctb.5020230302.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Bhattacharya, Madhuchhanda, Michael P. Harold, and Vemuri Balakotaiah. "Mass-transfer coefficients in washcoated monoliths." AIChE Journal 50, no. 11 (October 14, 2004): 2939–55. http://dx.doi.org/10.1002/aic.10212.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Hashem, M. A., and M. N. Aimaghrabi. "Modelling Mass Transfer Coefficients During Drop Formation." Journal of Engineering Science and Technology Review 6, no. 1 (February 2013): 7–13. http://dx.doi.org/10.25103/jestr.061.02.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Braida, Washington J., and Say Kee Ong. "Air sparging: Air-water mass transfer coefficients." Water Resources Research 34, no. 12 (December 1998): 3245–53. http://dx.doi.org/10.1029/98wr02533.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Uberoi, Mohit, and Carmo J. Pereira. "External Mass Transfer Coefficients for Monolith Catalysts." Industrial & Engineering Chemistry Research 35, no. 1 (January 1996): 113–16. http://dx.doi.org/10.1021/ie9501790.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Tudose, Radu Z., and Gabriela Apreotesei. "Mass transfer coefficients in liquid–liquid extraction." Chemical Engineering and Processing: Process Intensification 40, no. 5 (September 2001): 477–85. http://dx.doi.org/10.1016/s0255-2701(00)00146-x.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Tovbin, Yu K. "Mass-Transfer Coefficients in Dense Binary Mixtures." Theoretical Foundations of Chemical Engineering 39, no. 6 (November 2005): 579–89. http://dx.doi.org/10.1007/s11236-005-0120-6.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

van den Berg, G. B., I. G. Rácz, and C. A. Smolders. "Mass transfer coefficients in cross-flow ultrafiltration." Journal of Membrane Science 47, no. 1-2 (November 1989): 25–51. http://dx.doi.org/10.1016/s0376-7388(00)80858-3.

Full text
APA, Harvard, Vancouver, ISO, and other styles
More sources

Dissertations / Theses on the topic "Mass transfer coefficients"

1

Van, der Westhuizen Francois Erasmus. "Vapour phase mass transfer coefficients in structured packing." Thesis, Stellenbosch : Stellenbosch University, 2008. http://hdl.handle.net/10019.1/1966.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

De, Oliveira Campos Leandro Dijon. "Mass transfer coefficients across dynamic liquid steel/slag interface." Thesis, Bordeaux, 2017. http://www.theses.fr/2017BORD0554/document.

Full text
Abstract:
Afin de prédire l’évolution de la composition chimique du laitier dans différents procédés sidérurgiques, un modèle CFD a été développé. Les coefficients de transfert de masse sont estimés à partir des modèles basés sur les paramètres physico-chimiques et hydrodynamiques, comme par exemple la diffusivité des espèces chimiques et la divergence de l’interface. Ces modèles ont été développé pour la prédiction du transfert gaz-liquide où le les nombres de Schmidt (Sc=ν⁄D) sont relativement faible (Sc≈200). Par contre, les procédés industriels ont un nombre de Sc considérablement plus importante, de l’ordre de 103 à 104. Pour évaluer la pertinence de ces modèles, l’hydrodynamique au voisinage d’une interface liquide-liquide a été étudiée. Un modèle CFD et des mesures par l’anémométrie laser (LDA) ont été utilisés pour calculer et valider les champs de vitesse d’une maquette à eau d’une lingotière de coulée continue (CC).Le modèle de transfert de masse d’une lingotière de coulée continu industriel nous a montré que les coefficients de transfert de masse ne sont pas distribués de manière homogène, et les propriétés physiques du laitier ne doivent pas y être non plus. Cette distribution non-homogène a été confirmée par des essais physiques. Les écoulements calculés numériquement ont été utilisé pour prédire les coefficients de transfert de masse entre les deux phases liquide. Ces paramètres seront utilisés comme donnée d’entré pour un modèle de thermodynamique afin de prédire l’évolution de la composition chimique du laitier
In order to characterize the mass transfer coefficients (MTC) of different species across liquid steel/slag interface, a multiphase Computational Fluid Dynamic (CFD) model was developed. MTC’s are estimated from models based on physicochemical and hydrodynamic parameters, such as mass diffusivity, interface shear and divergence strength. These models were developed for gas-liquid interactions with relative low Schmidt (Sc=ν⁄D) numbers (Sc≈200). However, the industrial processes involve mass transfer of chemical species with Sc number ranging from 103 to 104. To evaluate the applicability of these existing models, the fluid flow in the vicinity of a liquid/liquid interface is investigated. Computational Fluid Dynamic (CFD) and Laser Doppler Anemometry (LDA) were used to calculate and measure the velocity field on a continuous casting (CC) water model configuration. The work provides new insights and original measures to understand the fluid flow near liquid-liquid interfaces.The mass transfer model of an industrial continuous casting mold showed that the mass transfer coefficients are not homogeneously distributed, and slag properties should follow this trend. This non-homogeneity was confirmed by physical experiments performed with a water model of a CC configuration and its CFD representation. The calculated flow was used to predict the MTC and the interface area between phases, since the interface is constantly moving. These parameters will be the input of thermodynamic models to predict slag composition and viscosity. This methodology is currently under validation, and it will also be applied to improve steel plant performance in the desulphurization process
APA, Harvard, Vancouver, ISO, and other styles
3

Nebrensky, J. J. "Optical measurement of local mass transfer coefficients in naturally convecting systems." Thesis, University of Edinburgh, 1996. http://hdl.handle.net/1842/12709.

Full text
Abstract:
The present work covers three main areas. First, several suitable polymers (one-part silicone RTVs, including a certain silicone sealant and Dow Corning's DC 734) and swelling agents (aliphatic esters such as iso-Pentyl Ethanoate, iso-Butyl iso-Butanoate and n-Pentyl Propanoate; alkanes including n-Nonane and n-Decane) have been identified, along with effective methods of applying the rubber coatings to both flat and cylindrical substrates. The diffusion properties of these new solvent/polymer systems have also been measured. Also, various aspects of the holographic system have been examined. The fringe visibility problems mentioned above are found to stem from in the incorrect location of the optical diffusing screen and are exacerbated by an apparent design flaw in the thermoplastic holographic camera used by some workers causing the gradual re-localisation of the interference fringes after hologram development. Substantial improvements in the lifetime of the thermoplastic plates for the holocamera has resulted from surrounding the optical system with a simple plastic curtain to keep out airborne dirt and dust. The improved optical system has been used to look at natural convection mass transfer from a vertical plate, using a variety of swelling agents to cover a range of Rayleigh numbers (Ra). For the more volatile solvents the results are in fair agreement with the analytical prediction of Lorenz, Sh=0.411 Ra1/4. For the less volatile swelling agents the measured values are significantly higher than predicted; this is believed to be due to background draughts increasing mass transfer rate. Natural convection from the cylindrical surface of a vertical rod has also been investigated. Other work performed in support of the main project includes the writing of a computer program to produce simulated fringe patterns in various geometries, the demonstration of a novel swollen polymer system using water and gelatin, and the investigation of temperature distributions in vertical rod arrays in free and mixed convection using both thermocouples and liquid crystal thermography.
APA, Harvard, Vancouver, ISO, and other styles
4

Manjo, Persis Yefon. "A fundamental approach to predicting mass transfer coefficients in bubble column reactors." Master's thesis, University of Cape Town, 2014. http://hdl.handle.net/11427/9120.

Full text
Abstract:
Includes bibliographical references.
A bubble column reactor is a vertical cylindrical vessel used for gas-liquid reactions. Bubble Columns have several applications in industry due to certain obvious advantages such as high gas-liquid interfacial area, high heat and mass transfer rates, low maintenance requirements and operating costs. On the other hand, attempts at modelling and simulation are complicated by lack of understanding of hydrodynamics and mass transfer characteristics. This complicates design scale-up and industrial usage. Many studies and models have attempted to evolve understanding of the hydrodynamic complexity in Bubble Columns reactors. A closer look at these studies and models reveals a variety of solution methods for different systems (Frössling, 1938; Clift et al., 1978; Hughmark, 1967; Dutta, 2007; Ranz and Marshall, 1952; Benitez, 2009; Buwa et al., 2006; Suzzia et al., 2009; Wylock et al., 2011). Numerous correlations (Frössling, 1938; Clift et al., 1978; Hughmark, 1967; Dutta, 2007; Ranz and Marshall, 1952; Benitez, 2009; Buwa et al., 2006) exist but to date in literature, there is no general approach to determining accurate estimates of average mass transfer coefficient values. Good estimates of the average mass transfer coefficient will improve the predictive capacity of the associated models. Recent attempts at modelling micro-scale bubble-fluid interaction resulted in the Bubble Cell Model, BCM, (Coetzee et al., 2009) which simulates the velocity vector field around a single gas bubble in a flowing fluid stream using a Semi-Analytical model. The aim of the present study is to extend the BCM applications by integrating the mass balance into the framework to predict the average mass transfer coefficient in bubble columns. A nitrogen-water steady state system was simulated in an axisymmetric grid where mass transfer occurs between the gas and liquid.
APA, Harvard, Vancouver, ISO, and other styles
5

Davies, Stephen Nigel. "The evaluation of overall gas-liquid mass transfer coefficients in gas sparged agitated vessels." Thesis, University College London (University of London), 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.263106.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Djebbar, Yassine. "Prediction of mass transfer coefficients of air-stripping packed towers for volatile organic compound removal." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape11/PQDD_0011/NQ38780.pdf.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Ahlman, Robert. "ASSESSMENT OF GOVERNING HEAT AND MASS TRANSFER COEFFICIENTS FOR CRYOGENIC NO-VENT TOP-OFF MODELING." Cleveland State University / OhioLINK, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=csu1625819994533715.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Moeti, Lebone Tiisang. "The dependence of the continuous phase mass transfer coefficients on molecular diffusivity for liquid-liquid extraction in agitated vessels." Diss., Georgia Institute of Technology, 1986. http://hdl.handle.net/1853/11856.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Miller, Jacob. "Modelling the Effect of Catalysis on Membrane Contactor Mass Transfer Coefficients for Carbon Dioxide Absorption Systems." University of Cincinnati / OhioLINK, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1627662756315225.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

McFarland, Elizabeth Gramling. "A new method for determining diffusion and convection mass transfer coefficients in the dyeing of textile materials." Diss., Georgia Institute of Technology, 2000. http://hdl.handle.net/1853/12416.

Full text
APA, Harvard, Vancouver, ISO, and other styles
More sources

Books on the topic "Mass transfer coefficients"

1

Nikitina, Lidii︠a︡ Mikhaĭlovna. Thermodynamic parameters and mass transfer coefficients of wet materials. New York: Begell House, 2006.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
2

Endres, J. C. T. Scale-up and system influences on hydrodynamic and mass transfer model parameters (especially drop-side mass coefficients) for prediction of extraction column performance. Manchester: UMIST, 1993.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
3

Lee, Johnny. Designing Aeration Systems Using Baseline Mass Transfer Coefficients. Taylor & Francis Group, 2021.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
4

Lee, Johnny. Designing Aeration Systems Using Baseline Mass Transfer Coefficients: For Water and Wastewater Treatment. Taylor & Francis Group, 2021.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
5

Designing Aeration Systems Using Baseline Mass Transfer Coefficients: For Water and Wastewater Treatment. Taylor & Francis Group, 2021.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
6

Lee, Johnny. Designing Aeration Systems Using Baseline Mass Transfer Coefficients: For Water and Wastewater Treatment. Taylor & Francis Group, 2021.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
7

Dahhan, Muthana H. Al. Design of liquid-liquid contractor for the experimental studies of mass transfer: The evaluation of interface mass transfer coefficients on the binary system water-n-butanol. 1988.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
8

Dahhan, Muthana H. Al. Design of liquid-liquid contractor for the experimental studies of mass transfer: The evaluation of interface mass transfer coefficients on the binary system water-n-butanol. 1988.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
9

Inoue, Shawna K. A moving boundary model of calcium alginate gel formation and the estimation of diffusion and mass transfer coefficients. 1997.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
10

Lee, Johnny. The Baseline Mass Transfer Coefficient. Cambridge Scholars Publishing, 2020.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
More sources

Book chapters on the topic "Mass transfer coefficients"

1

Nagnibeda, Ekaterina, and Elena Kustova. "Reaction Rate Coefficients." In Heat and Mass Transfer, 171–90. Berlin, Heidelberg: Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-642-01390-4_7.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Nagnibeda, Ekaterina, and Elena Kustova. "Algorithms for the Calculation of Transport Coefficients." In Heat and Mass Transfer, 111–69. Berlin, Heidelberg: Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-642-01390-4_6.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Fujikawa, Shigeo, Takeru Yano, and Masao Watanabe. "Methods for the Measurement of Evaporation and Condensation Coefficients." In Heat and Mass Transfer, 71–109. Berlin, Heidelberg: Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-18038-5_3.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Tavares, Roberto Parreiras, André Afonso Nascimento, and Henrique Loures Vale Pujatti. "Mass Transfer Coefficients during Steel Decarburization in a RH Degasser." In Diffusion in Solids and Liquids III, 679–84. Stafa: Trans Tech Publications Ltd., 2008. http://dx.doi.org/10.4028/3-908451-51-5.679.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Yogendrasasidhar, D., and Y. Pydi Setty. "Studies on Heat and Mass Transfer Coefficients of Pearl Millet in a Batch Fluidized Bed Dryer." In Numerical Heat Transfer and Fluid Flow, 433–39. Singapore: Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-13-1903-7_50.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Tosyali, U. C., and B. Z. Uysal. "Liquid Phase Mass Transfer Coefficients and Interfacial Area in Three-Phase Fluidization." In Chemical Reactor Design and Technology, 393–410. Dordrecht: Springer Netherlands, 1986. http://dx.doi.org/10.1007/978-94-009-4400-8_11.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Dronawat, Sundeep N., C. Kurt Svihla, and Thomas R. Hanley. "Effect of Impeller Geometry on Gas-Liquid Mass Transfer Coefficients in Filamentous Suspensions." In Biotechnology for Fuels and Chemicals, 363–73. Totowa, NJ: Humana Press, 1997. http://dx.doi.org/10.1007/978-1-4612-2312-2_32.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Krishnaiah, D., D. M. R. Prasad, R. Sarbatly, A. Bono, S. M. Anisuzzaman, and K. Krishnaiah. "Solid–Liquid Mass Transfer Coefficients in an Ultrasound-Irradiated Extraction of Iota-Carrageenan." In Developments in Sustainable Chemical and Bioprocess Technology, 249–61. Boston, MA: Springer US, 2013. http://dx.doi.org/10.1007/978-1-4614-6208-8_31.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Ryzhkov, Ilya I., and Irina V. Stepanova. "On Some Exact Solutions of Heat and Mass Transfer Equations with Variable Transport Coefficients." In Springer Proceedings in Mathematics & Statistics, 599–605. Singapore: Springer Singapore, 2016. http://dx.doi.org/10.1007/978-981-10-2636-2_48.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Annesini, Maria Cristina, Luigi Marrelli, Vincenzo Piemonte, and Luca Turchetti. "Mass Transfer Coefficient." In Artificial Organ Engineering, 23–31. London: Springer London, 2016. http://dx.doi.org/10.1007/978-1-4471-6443-2_2.

Full text
APA, Harvard, Vancouver, ISO, and other styles

Conference papers on the topic "Mass transfer coefficients"

1

James, L. A., and I. Chatzis. "Mass Transfer Coefficients in Vapour Extraction (VAPEX)." In Canadian International Petroleum Conference. Petroleum Society of Canada, 2007. http://dx.doi.org/10.2118/2007-199-ea.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Brown, Kymani M., and Mohammad Reza Shaeri. "Heat Transfer Coefficients in Perforated Fins." In 9th International Conference on Fluid Flow, Heat and Mass Transfer (FFHMT'22). Avestia Publishing, 2022. http://dx.doi.org/10.11159/ffhmt22.122.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Hala Chaoui, Felipe Montes, C Alan Rotz, and Tom L Richard. "Dissociation and Mass Transfer Coefficients for Ammonia Volatilization Models." In 2008 Providence, Rhode Island, June 29 - July 2, 2008. St. Joseph, MI: American Society of Agricultural and Biological Engineers, 2008. http://dx.doi.org/10.13031/2013.24870.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

SILVA, J. M. F., J. P. SILVA, T. P. C. SOUZA, C. P. G. LIRA, and B. F. SANTOS. "THEORETICAL EVALUATION OF MASS TRANSFER COEFFICIENTS IN SOLUTION CRYSTALLIZATION." In XX Congresso Brasileiro de Engenharia Química. São Paulo: Editora Edgard Blücher, 2015. http://dx.doi.org/10.5151/chemeng-cobeq2014-1821-17378-143639.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Komiya, Atsuki, Juan F. Torres, Junnosuke Okajima, Shuichi Moriya, Shigenao Maruyama, and Masud Behnia. "An Investigation of Concentration Dependency of Mass Diffusion Coefficients in Multi-Component Diffusion." In 2010 14th International Heat Transfer Conference. ASMEDC, 2010. http://dx.doi.org/10.1115/ihtc14-22501.

Full text
Abstract:
In this paper the concentration dependency of mass diffusion coefficients in binary system was investigated. We have developed a novel and accurate visualization system using a small area of transient diffusion fields by adopting a phase shifting technique. Through accurate visualization of the transient diffusion field, it is possible to determine the mass diffusion coefficient. Unlike a conventional interferometer, the proposed system provides high spatial resolution profiles of concentration even though the target area is less than 1.0 mm. This allows the measurement of local transient diffusion field with a high accuracy. The determination of mass diffusion coefficient of each component in multi-component system was also conducted. For the accurate and reliable measurement of mass diffusion coefficient, the experimental error should be taken into account. The experimental data usually contains unexpected accidental error and inherent errors of the measurement system. In this study, an optimization technique using conjugate gradient method is developed for the precise determination of the mass diffusion coefficients. The difference between the experimental and numerical concentration distribution is set as the objective function for the optimization method. The conjugate gradient method searches the optimal value by minimizing the objective function. For the concentration dependency evaluation, sodium chloride (NaCl) in pure water was selected as solute. For determination of each mass diffusion coefficient in multi-component system, NaCl and lysozyme in buffer solution was selected. The experiments were performed under isothermal conditions. The proposed measurement method was validated by comparing the measured data with those available in the literature. The results indicated that the concentration dependency was successfully investigated from the experimental data. The mass diffusion coefficient of each component also could be determined from the experimental data as evidenced by good agreement with the published data. The difference between the reference and determined value of mass diffusion coefficient was less than 10%. It can be said that the diffusion of each solute inside the cell progresses independently within the dilute concentration ranges and the superposition principle of concentration of NaCl and lysozyme was satisfied. The influence of concentration of solution on the diffusion process and allowable concentration range of the superposition principle are determined and discussed.
APA, Harvard, Vancouver, ISO, and other styles
6

WEI, HAIGUO, and WEIYANG FEI. "STUDY ON MULTI-COMPONENT MASS TRANSFER COEFFICIENTS OF DROP SWARM." In Proceedings of the 4th International Conference. WORLD SCIENTIFIC, 2004. http://dx.doi.org/10.1142/9789812702623_0016.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Mesquita, Maximilian S., and Marcelo J. S. de Lemos. "Mass Dispersion Coefficients for Turbulent Flow in an Infinite Porous Medium." In ASME 2004 Heat Transfer/Fluids Engineering Summer Conference. ASMEDC, 2004. http://dx.doi.org/10.1115/ht-fed2004-56765.

Full text
Abstract:
In this work, mass dispersion tensors were calculated within an infinite porous medium formed by a spatially periodic array of longitudinally-displaced cylindrical rods. For the sake of simplicity, just one unit-cell, together with periodic boundary conditions for mass and momentum equations, and Neumann conditions for the mass concentration, was used to represent such medium. The numerical methodology herein employed is based on the control volume approach. Turbulence is assumed to exist within the fluid phase. High and low Reynolds k-e models were used to model such non-linear effects. The flow equations at the pore-scale were numerically solved using the SIMPLE method applied to a non-orthogonal boundary-fitted coordinate system. Integrated mass fraction results were compared with existing data in the literature.
APA, Harvard, Vancouver, ISO, and other styles
8

Baek, Seungwhan, and Sangkwon Jeong. "Investigation of Two Phase Heat Transfer Coefficients of Cryogenic Mixed Refrigerants." In ASME 2013 4th International Conference on Micro/Nanoscale Heat and Mass Transfer. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/mnhmt2013-22150.

Full text
Abstract:
Mixed Refrigerant Joule Thomson (MR-JT) refrigerators are widely used in various kinds of cryogenic systems these days. Although heat transfer coefficient estimation for a multiphase and multi-component fluid in cryogenic temperature range is necessarily required in the heat exchanger design of MR-JT refrigerator, it has been rarely discussed so far. In this paper, condensation and evaporation heat transfer coefficients of mixed refrigerant are measured in a microchannel heat exchanger. Printed Circuit Heat Exchanger (PCHE) has been developed as a compact microchannel heat exchanger and used in the experiment. Several two-phase heat transfer coefficient correlations are examined to discuss the experimental measurement results. The result of this paper shows that cryogenic mixed refrigerant heat transfer coefficients can be estimated by conventional two-phase heat transfer coefficient correlations.
APA, Harvard, Vancouver, ISO, and other styles
9

Kanevce, Gligor H., Ljubica P. Kanevce, George S. Dulikravich, and Marcelo J. Colac¸o. "An Inverse Method for Drying at High Mass Transfer Biot Number." In ASME 2003 Heat Transfer Summer Conference. ASMEDC, 2003. http://dx.doi.org/10.1115/ht2003-47146.

Full text
Abstract:
The inverse problem of using temperature measurements to estimate the moisture content and temperature-dependent moisture diffusivity together with the heat and mass transfer coefficients is analyzed in this paper. In the convective drying practice, usually the mass transfer Biot number is very high and the heat transfer Biot number is very small. This leads to a very small temperature sensitivity coefficient with respect to the mass transfer coefficient when compared to the temperature sensitivity coefficient with respect to the heat transfer coefficient. Under these conditions the relative error of the estimated mass transfer coefficient is high. To overcome this problem, in this paper the mass transfer coefficient is related to the heat transfer coefficient through the analogy between the heat and mass transfer processes in the boundary layer. The resulting parameter estimation problem is then solved by using a hybrid constrained optimization algorithm OPTRAN.
APA, Harvard, Vancouver, ISO, and other styles
10

Bell, James H., and Lawrence A. Hand. "Calculation of Mass Transfer Coefficients in a Crystal Growth Chamber through Heat Transfer Measurements." In 2007 22nd International Congress on Instrumentation in Aerospace Simulation Facilities. IEEE, 2007. http://dx.doi.org/10.1109/iciasf.2007.4380903.

Full text
APA, Harvard, Vancouver, ISO, and other styles

Reports on the topic "Mass transfer coefficients"

1

Bell, J., and L. Hand. Calculation of Mass Transfer Coefficients in a Crystal Growth Chamber through Heat Transfer Measurements. Office of Scientific and Technical Information (OSTI), April 2005. http://dx.doi.org/10.2172/918405.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Higgins, P. D., F. H. Attix, J. H. Hubbell, S. M. Seltzer, M. J. Berger, and C. H. Sibata. Mass energy-transfer and mass energy-absorption coefficients, including in-flight positron annihilation for photon energies 1 keV to 100 MeV. Gaithersburg, MD: National Institute of Standards and Technology, 1991. http://dx.doi.org/10.6028/nist.ir.4680.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Higgens, P. D., F. H. Attix, J. H. Hubbell, S. M. Seltzer, M. J. Berger, and C. H. Sibata. Mass energy-transfer and mass energy-absorption coefficients, including in-flight positron annihilation for photon energies 1 keV to 100 MeV. Gaithersburg, MD: National Institute of Standards and Technology, 1992. http://dx.doi.org/10.6028/nist.ir.4812.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Singh, Rajesh K., Jie Bao, Chao Wang, and Zhijie Xu. Device-scale CFD study for mass transfer coefficient and effective mass transfer area in packed column. Office of Scientific and Technical Information (OSTI), October 2018. http://dx.doi.org/10.2172/1492447.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Howard, Isaac, Thomas Allard, Ashley Carey, Matthew Priddy, Alta Knizley, and Jameson Shannon. Development of CORPS-STIF 1.0 with application to ultra-high performance concrete (UHPC). Engineer Research and Development Center (U.S.), April 2021. http://dx.doi.org/10.21079/11681/40440.

Full text
Abstract:
This report introduces the first release of CORPS-STIF (Concrete Observations Repository and Predictive Software – Structural and Thermodynamical Integrated Framework). CORPS-STIF is envisioned to be used as a tool to optimize material constituents and geometries of mass concrete placements specifically for ultra-high performance concretes (UHPCs). An observations repository (OR) containing results of 649 mechanical property tests and 10 thermodynamical tests were recorded to be used as inputs for current and future releases. A thermodynamical integrated framework (TIF) was developed where the heat transfer coefficient was a function of temperature and determined at each time step. A structural integrated framework (SIF) modeled strength development in cylinders that underwent isothermal curing. CORPS-STIF represents a step toward understanding and predicting strength gain of UHPC for full-scale structures and specifically in mass concrete.
APA, Harvard, Vancouver, ISO, and other styles
We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!

To the bibliography