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Relevant bibliographies by topics / Damkohler Number

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Academic literature on the topic 'Damkohler Number'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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Journal articles on the topic "Damkohler Number"

1

Kong, Dancheng, James L. White, Frederick C. Weissert, and Nobuyuki Nakajima. "An Experimental and Theoretical Study of Heat Conduction and Vulcanization of Rubber Compounds in Molds." Rubber Chemistry and Technology 60, no. 1 (1987): 140–58. http://dx.doi.org/10.5254/1.3536114.

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Abstract A fundamental study on curing of rubber compounds in molds is presented. We have measured the thermal conductivity of a range of rubber compounds determining the influence of carbon black, other fillers, and oil. The heats of reaction associated with the curing kinetics of model compounds were measured. A mathematical model is proposed to predict the temperature profiles for curing a reactive slab. This involves inclusion of an energy generation rate, which depends on time and temperature. This is expressed through a Damkohler number. Solutions of the heat conduction equation are inte

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Reddy, Gundlapally Shiva Kumar, Nilam Venkata Koteswararao, Ragoju Ravi, Kiran Kumar Paidipati, and Christophe Chesneau. "Dissolution-Driven Convection in a Porous Medium Due to Vertical Axis of Rotation and Magnetic Field." Mathematical and Computational Applications 27, no. 3 (2022): 53. http://dx.doi.org/10.3390/mca27030053.

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This article aims to study the effect of the vertical rotation and magnetic field on the dissolution-driven convection in a saturated porous layer with a first-order chemical reaction. The system’s physical parameters depend on the Vadasz number, the Hartmann number, the Taylor number, and the Damkohler number. We analyze them in an in-depth manner. On the other hand, based on an artificial neural network (ANN) technique, the Levenberg–Marquardt backpropagation algorithm is adopted to predict the distribution of the critical Rayleigh number and for the linear stability analysis. The simulated

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Ramaswami, A., S. Ghoshal, and R. G. Luthy. "Mass transfer and biodegradation of PAH compounds from coal tar." Water Science and Technology 30, no. 7 (1994): 61–70. http://dx.doi.org/10.2166/wst.1994.0307.

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This study examines the role of physico-chemical mass transfer processes on the rate of biotransformation of polycyclic aromatic hydrocarbon (PAH) compounds released from non-aqueous phase liquid (NAPL) coal tar present at residual saturation within a microporous medium. A simplified coupled dissolution-degradation model is developed that describes the concurrent mass transfer and biokinetic processes occurring in the system. Model results indicate that a dimensionless Damkohler number can be utilized to distinguish between systems that are mass transfer limited, and those that are limited by

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Thakor, Pradip, Balvant Yadav, Sheela Modani, and Nalini R. Shastri. "Preparation and optimization of nano-sized cocrystals using a quality by design approach." CrystEngComm 22, no. 13 (2020): 2304–14. http://dx.doi.org/10.1039/c9ce01930h.

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Low, Hong Tong, Xiao Bing Chen, Peng Yu, and Sony Winoto. "Mass Transport in a Microchannel Bioreactor with a Porous Wall." Applied Mechanics and Materials 110-116 (October 2011): 3489–94. http://dx.doi.org/10.4028/www.scientific.net/amm.110-116.3489.

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A two-dimensional flow model, incorporating mass transport, has been developed to simulate flow in a microchannel bioreactor with a porous wall. A two-domain method was implemented which was based on finite volume method. For the porous-fluid interface, a stress jump condition was used with continuity of normal stress; and the mass interfacial conditions were continuities of mass and mass flux. Two parameters are defined to characterize the mass transports in the fluid and porous regions. The porous Damkohler number is the ratio of consumption to diffusion of the substrates in the porous mediu

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Saini, Anju, V. K. Katiyar, and Pratibha. "Effects of first-order chemical reactions on the dispersion coefficient associated with laminar flow through the lungs." International Journal of Biomathematics 07, no. 02 (2014): 1450021. http://dx.doi.org/10.1142/s1793524514500211.

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This paper aims to look into the determination of effective area-average concentration and dispersion coefficient associated with unsteady flow through a small-diameter tube where a solute undergoes first-order chemical reaction both within the fluid and at the boundary. The reaction consists of a reversible component due to phase exchange between the flowing fluid and the wall layer, and an irreversible component due to absorption into the wall. To understand the dispersion, the governing equations along with the reactive boundary conditions are solved numerically using the Finite Difference

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Markoš, Jozef, and Alena Brunovská. "Optimal catalyst activity distribution in fixed-bed reactor with catalyst deactivation." Collection of Czechoslovak Chemical Communications 54, no. 2 (1989): 375–87. http://dx.doi.org/10.1135/cccc19890375.

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In this paper the influence of the active catalyst location in a pellet on fixed-bed catalytic reactor performance is described. The optimal activity distribution as a function of an economic parameter (ratio of product and catalyst costs), Thiele modulus and Damkohler number is estimated.

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JIANG, TAI-LUN, and EDWARD E. O'BRIEN. "SCHMIDT, DAMKOHLER AND REYNOLDS NUMBER EFFECTS ON SECOND-ORDER REACTIONS IN ISOTROPIC TURBULENCE." Chemical Engineering Communications 106, no. 1 (1991): 185–206. http://dx.doi.org/10.1080/00986449108911543.

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Koutmos, P. "A Damkohler number description of local extinction in turbulent methane jet diffusion flames." Fuel 78, no. 5 (1999): 623–26. http://dx.doi.org/10.1016/s0016-2361(98)00175-6.

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Ghoniem, Ahmed F., and Ghassem Heidarinejad. "Effect of Damkohler number on the reactive zone structure in a shear layer." Combustion and Flame 83, no. 1-2 (1991): 1–16. http://dx.doi.org/10.1016/0010-2180(91)90199-l.

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Dissertations / Theses on the topic "Damkohler Number"

1

Baz̆bauers, Gatis. "Experimental investigation of low Damkohler number turbulent reaction." Thesis, Massachusetts Institute of Technology, 1995. http://hdl.handle.net/1721.1/36074.

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Park, Doyoub. "EFFECTS OF TRANSPORT PROPERTIES AND FLAME UNSTEADINESS ON NITROGEN OXIDES EMISSIONS FROM LAMINAR HYDROGEN JET DIFFUSION FLAMES." Master's thesis, University of Central Florida, 2005. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/2968.

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Experimental studies on the coupled effects of transport properties and unsteady fluid dynamics have been conducted on laminar, acoustically forced, hydrogen jet diffusion flames diluted by argon and helium. The primary purpose of this research is to determine how the fuel Lewis number and the flow unsteadiness play a combined role in maximum flame temperature and affect NOx emission from jet diffusion flame. The fuel Lewis number is varied by increasing/decreasing the mole fraction of diluents in the fuel stream. Therefore, maximum flame temperatures and then NOx emission levels were expected

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Husain, Sajjad A. "Analysis of blowoff scaling of bluff body stabilized flames." Thesis, Atlanta, Ga. : Georgia Institute of Technology, 2008. http://hdl.handle.net/1853/22565.

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Huelskamp, Bethany C. "The Development of a Correlation to Predict the Lean Blowout of Bluff Body Stabilized Flames with a Focus on Relevant Timescales and Fuel Characteristics." University of Dayton / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=dayton1367192147.

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Sulaiman, Mostafa. "Etude par simulations numériques de l'effet d'une réaction chimique sur le transfert de matière dans un lit fixe de particules." Thesis, Toulouse, INPT, 2018. http://www.theses.fr/2018INPT0114/document.

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Nous avons étudié l'effet d'une réaction chimique sur le transfert de matière pour des systèmes à deux phases sous écoulement. La phase continue est une phase fluide et la phase dispersée est constituée de particules de catalyseur au sein desquelles une réaction chimique irréversible de premier ordre a lieu. Le soluté réactif est transporté par l'écoulement externe de fluide et pénètre dans la particule par diffusion, il se produit alors une réaction chimique qui consomme cette espèce. Nous modélisons le problème par un couplage interne-externe des équations de bilan et au moyen de deux condit

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Hsu, Sheng-Yen. "Flame Spread and Extinction Over Solids in Buoyant and Forced Concurrent Flows: Model Computations and Comparison with Experiments." Cleveland, Ohio : Case Western Reserve University, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=case1238144733.

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Thesis (Ph.D.)--Case Western Reserve University, 2009<br>Abstract Department of Mechanical and Aerospace Engineering Title from PDF (viewed on 14 April 2009) Available online via the OhioLINK ETD Center

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Sheng-Yen, Hsu. "Flame Spread and Extinction Over Solids in Buoyant and Forced Concurrent Flows: Model Computations and Comparison with Experiments." Case Western Reserve University School of Graduate Studies / OhioLINK, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=case1238144733.

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Sime, Segura Fidelio. "Laser Spark Ignition of Counter-flow Diffusion Flames: Effects of diluents and diffusive-thermal properties." Master's thesis, University of Central Florida, 2012. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/5500.

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A pulsed Nd:YAG laser is used to study laser spark ignition of methane counter-flow diffusion flames with the use of helium and argon as diluents to achieve a wide range of variations in transport properties. The global strain rate and Damkohler number on successful ignition were investigated for the effects of Lewis number and transport properties, which are dependent on the diluent type and dilution level. A high-speed camera is used to record the ignition events and a software is used for pre-ignition flow field and mixing calculations. It is found that the role of effective Lewis number

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Lin, Zhi Qing, and 林智清. "The effect of the damkohler number on the facilitated transport." Thesis, 1995. http://ndltd.ncl.edu.tw/handle/06761361933463167980.

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Sulaiman, Mostafa. "Numerical modeling and simulation of chemical reaction effect on mass transfer through a fixed bed of particles." Thesis, 2018. http://oatao.univ-toulouse.fr/24311/1/SULAIMAN_Mostafa_.pdf.

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We studied the effect of a first order irreversible chemical reaction on mass transfer for two-phase flow systems in which the continuous phase is a fluid and the dispersed phase consists in catalystspherical particles. The reactive solute is transported by the fluid flow and penetrates through the particle surface by diffusion. The chemical reaction takes place within the bulk of the particle. Wehandle the problem by coupling mass balance equations for internal-external transfer with two boundary conditions: continuity of concentration and mass flux at the particle surface. We start with the

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Book chapters on the topic "Damkohler Number"

1

Bazbauers, Gatis, and Simone Hochgreb. "Experimental Investigation of Low Damkohler Number Turbulent Reaction." In Transport Phenomena In Combustion. Routledge, 2024. https://doi.org/10.1201/9780203735138-45.

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2

Yoshida, A., Y. Ando, M. Narisawa, and H. Tsuji. "Transition of Turbulent Premixed Flame Structure with Turbulence Reynolds Number and Damkohler Number." In Aerothermodynamics in Combustors. Springer Berlin Heidelberg, 1992. http://dx.doi.org/10.1007/978-3-642-84755-4_3.

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Gaillard, F., and I. Gökalp. "Some Results on the Structure of the Tempertature Field in Low Damkohler Number Reaction Zones." In Lecture Notes in Engineering. Springer US, 1989. http://dx.doi.org/10.1007/978-1-4613-9631-4_18.

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Yoshida, Akira, and Kenichi Sakurai. "Structure of the Turbulent Premixed Flames at High Reynolds Numbers and Low Damkohler Numbers." In Transport Phenomena In Combustion. Routledge, 2024. https://doi.org/10.1201/9780203735138-48.

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5

"Diffusion Coefficients and Damkohler Numbers within the Internal Pores of Catalytic Pellets." In Transport Phenomena for Chemical Reactor Design. John Wiley & Sons, Inc., 2003. http://dx.doi.org/10.1002/0471471623.ch21.

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van Duijn, C. J., Andro Mikelić, I. S. Pop, and Carole Rosier. "Chapter 1 Effective Dispersion Equations for Reactive Flows with Dominant Péclet and Damkohler Numbers." In Advances in Chemical Engineering - Mathematics in Chemical Kinetics and Engineering. Elsevier, 2008. http://dx.doi.org/10.1016/s0065-2377(08)00001-x.

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Conference papers on the topic "Damkohler Number"

1

Knaus, Darin, Patrick Magari, Roger Hill, Scott Phillips, and Barry Kiel. "Predicting Augmentor Static Stability Using Local Damkohler Number." In 46th AIAA Aerospace Sciences Meeting and Exhibit. American Institute of Aeronautics and Astronautics, 2008. http://dx.doi.org/10.2514/6.2008-1027.

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2

Wang, Hui-ru, and Jie Jin. "Lean Blowout Predictions of a Non-Premixed V-Gutter Stabilized Flame Using a Damkohler Number Methodology." In ASME 2011 Turbo Expo: Turbine Technical Conference and Exposition. ASMEDC, 2011. http://dx.doi.org/10.1115/gt2011-45958.

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The lean blowout stability of a non-premixed, V-gutter stabilized flame was investigated using a Damkohler number methodology. The flow and chemical timescales were extracted from the reacting RANS CFD results on a cell-by-cell basis. Assessment of three representative definitions of flow and chemical timescales for Damkohler number based on different blowout mechanisms was performed. By examining the Damkohler number fields, the structure of the flame or the possibility of blowout can be estimated. The results demonstrated that a distinct transition between stable and unstable flames was obse

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3

Barr, B. W., and O. A. Ezekoye. "Analysis of the Equilibrium Approximation in Chemical Ablation of Thermal Protective Systems." In ASME 2012 Heat Transfer Summer Conference collocated with the ASME 2012 Fluids Engineering Division Summer Meeting and the ASME 2012 10th International Conference on Nanochannels, Microchannels, and Minichannels. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/ht2012-58462.

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A quasi-steady-state ablation model is used to investigate the behavior of thermochemically ablating systems in equilibrium and nonequilibrium surface thermochemistry regimes. The model is simplified to allow extraction of relevant nondimensional parameters and comparison with existing experimental data on solid carbon combustion. Good agreement is found between model predictions and experimental data, and the data and model are collapsed in terms of the B number and surface Damkohler number. A new formulation for the surface Damkohler number is proposed, and a relationship between the B numbe

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Talbot, Malcolm Seth, and Rick David Gdanski. "Beyond the Damkohler Number: A New Interpretation of Carbonate Wormholing." In Europec/EAGE Conference and Exhibition. Society of Petroleum Engineers, 2008. http://dx.doi.org/10.2118/113042-ms.

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Ramadan, Bassem H. "Effect of Damkohler Number and Non-Unity Lewis Number on a Laminar Diffusion Flame." In ASME/JSME 2003 4th Joint Fluids Summer Engineering Conference. ASMEDC, 2003. http://dx.doi.org/10.1115/fedsm2003-45434.

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The effect of the Damkohler number (Da) and non-unity Lewis number on a two-dimensional, steady, laminar diffusion flame anchored by a dividing plate in a rectangular channel was considered. The governing equations were solved numerically, using the SIMPLE and ADI schemes. The results for non-unity Lewis number were compared with those for a unity Lewis number, and Da a was also varied in order to determine their effect on the flame structure. The results show that an increase in the Da causes the flame to exist closer to the trailing edge of the divider and to increase the reactivity. A non-u

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Rasmussen, Chadwick, and James Driscoll. "Blowout Limits of Flames in High-Speed Airflows: Critical Damkohler Number." In 44th AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit. American Institute of Aeronautics and Astronautics, 2008. http://dx.doi.org/10.2514/6.2008-4571.

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Fredd, C. N., R. Tjia, and H. S. Fogler. "The Existence of an Optimum Damkohler Number for Matrix Stimulation of Carbonate Formations." In SPE European Formation Damage Conference. Society of Petroleum Engineers, 1997. http://dx.doi.org/10.2118/38167-ms.

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Sacksteder, Kurt, and James T'ien. "A new formulation of Damkohler number for studying opposed-flow flame spread and extinction." In 33rd Aerospace Sciences Meeting and Exhibit. American Institute of Aeronautics and Astronautics, 1995. http://dx.doi.org/10.2514/6.1995-150.

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Beseler, Kaylyn, Ankit Tyagi, and Jacqueline A. O'Connor. "Development of a Diagnostic Damkohler Number for Interpreting Laser-Induced Fluorescence Data in Turbulent Flames." In AIAA Scitech 2020 Forum. American Institute of Aeronautics and Astronautics, 2020. http://dx.doi.org/10.2514/6.2020-2278.

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El-Asrag, Hossam, Heinz Pitsch, Woo Kyung Kim, Hyungrok Do, and Godfrey Mungal. "A Computational and Experimental Assessment of the Damkohler Number Similarity for Static Flame Stability in Augmentor Flows." In 44th AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit. American Institute of Aeronautics and Astronautics, 2008. http://dx.doi.org/10.2514/6.2008-4955.

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