Relevant bibliographies by topics / Natural Convection

Academic literature on the topic 'Natural Convection'

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Published: 4 June 2021
Last updated: 1 August 2024

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Journal articles on the topic "Natural Convection"

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Schmidt, Frank W. "Natural convection." International Journal of Heat and Fluid Flow 7, no. 3 (September 1986): 240. http://dx.doi.org/10.1016/0142-727x(86)90030-5.

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W. Schmidt, Frank. "Natural convection." International Journal of Heat and Fluid Flow 7, no. 1 (March 1986): 27. http://dx.doi.org/10.1016/0142-727x(86)90039-1.

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Zhang, Tong, Shanshan Geng, Xin Mu, Jiamin Chen, Junyi Wang, and Zan Wu. "Thermal Characteristics of a Stratospheric Airship with Natural Convection and External Forced Convection." International Journal of Aerospace Engineering 2019 (September 8, 2019): 1–11. http://dx.doi.org/10.1155/2019/4368046.

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Though convective heat transfer is one of the main factors that dominate the thermal characteristics of stratospheric airships, there is no specific correlation equations for the calculation of convective heat transfer of airships. The equations based on flat plate and sphere models are all in use. To ameliorate the confusing situation of diverse convective heat transfer equations and to end the misuse of them in the thermal characteristic analysis of stratospheric airships, a multinode steady-state model for ellipsoid airships is built. The accuracy of the five widely accepted equations for natural convective heat transfer is compared and analysed on the proposed large-scale airship model by numerical simulation, so does that of the five equations for external forced convective heat transfer. The simulation method is verified by the available experimental data. Simulation results show that the difference of the five natural convection equations is negligible, while that of the five external forced convection equations must be considered in engineering. Forced convection equations with high precision and wide application should be further investigated.
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Abtahi, Arman, and J. M. Floryan. "Natural convection in a corrugated slot." Journal of Fluid Mechanics 815 (February 23, 2017): 537–69. http://dx.doi.org/10.1017/jfm.2017.73.

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Analysis of natural convection in a horizontal slot formed by two corrugated isothermal plates has been carried out. The analysis is limited to subcritical Rayleigh numbers$Ra$where no secondary motion takes place in the absence of corrugations. The corrugations have a sinusoidal form characterized by the wavenumber, the upper and lower amplitudes and the phase difference. The most intense convection occurs for corrugation wavelengths comparable to the slot height; it increases proportionally to$Ra$and proportionally to the corrugation height. Placement of corrugations on both plates may either significantly increase or decrease the convection depending on the phase difference between the upper and lower corrugations, with the strongest convection found for corrugations being in phase, i.e. a ‘wavy’ slot, and the weakest for corrugations being out of phase, i.e. a ‘converging–diverging’ slot. It is shown that the shear forces would always contribute to the corrugation build-up if erosion was allowed, while the role of pressure forces depends on the location of the corrugations as well as on the corrugation height and wavenumber, and the Rayleigh number. Placing corrugations on both plates results in the formation of a moment which attempts to change the relative position of the plates. There are two limiting positions, i.e. the ‘wavy’ slot and the ‘converging–diverging’ slot, with the latter being unstable. The system would end up in the ‘wavy’ slot configuration if relative movement of the two plates was allowed. The presence of corrugations affects the conductive heat flow and creates a convective heat flow. The conductive heat flow increases with the corrugation height as well as with the corrugation wavenumber; it is largest for short-wavelength corrugations. The convective heat flow is relevant only for wavenumbers of$O(1)$, it increases proportionally to$Ra^{3}$and proportionally to the second power of the corrugation height. Convection is qualitatively similar for all Prandtl numbers$Pr$, with its intensity increasing for smaller$Pr$and with the heat transfer augmentation increasing for larger$Pr$.
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Moctar, Moctar, Thierry Sikoudouin Maurice Ky, Amadou Konfé, Boureima Dianda, Salifou Ouédraogo, and Dieudonné Joseph Bathiébo. "Natural Convection Modeling in a Solar Tower." Indian Journal of Science and Technology 14, no. 48 (December 26, 2021): 3475–93. http://dx.doi.org/10.17485/ijst/v14i48.1357.

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Shen, Xiang Yang, Jing Ding, and Jian Feng Lu. "Turbulent Convective Heat Transfer in a Transversely Grooved Tube with Natural Convection Effect." Applied Mechanics and Materials 741 (March 2015): 458–61. http://dx.doi.org/10.4028/www.scientific.net/amm.741.458.

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The turbulent convective heat transfer in a transversely grooved tube of molten salt with natural convection effect has been numerically investigated. In general, the average Nusselt number with and without considering natural convection in transversely grooved tube was almost equal. According to the simulated results, the heat transfer coefficient of transversely grooved tube in upside region was lower than that of downside region. The effect of natural convection on unilateral heat transfer in transversely grooved tube was more obvious with lower Reynolds number and higher inlet temperature, and the effect of natural convection on unilateral heat transfer was lower with bigger groove deep.
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Kumar, Mahesh. "Experimental study on natural convection greenhouse drying of papad." Journal of Energy in Southern Africa 24, no. 4 (November 1, 2013): 37–43. http://dx.doi.org/10.17159/2413-3051/2013/v24i4a3144.

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In this paper, the convective heat transfer coefficients of papad for greenhouse drying under a natural convection mode are reported. Various experiments were conducted during the month of April 2010 at Guru Jambheshwar University of Science and Technology Hisar, India (29o5’5” N 75o45’55” E). Experimental data obtained for the natural convection greenhouse drying of papad was used to evaluate the constants in the Nusselt number expression by using simple linear regression analysis. These values of the constant were used further to determine the values of the convective heat transfer coefficient. The average value of a convective heat transfer coefficient was determined as 1.23 W/m2 oC. The experimental error in terms of percent uncertainty was also evaluated.
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KORTYAEVA, Darya O., and Maxim N. NIKITIN. "NUMERICAL STUDY OF NATURAL CONVECTION IN ENCLOSED VOLUME." Urban construction and architecture 6, no. 3 (September 15, 2016): 146–50. http://dx.doi.org/10.17673/vestnik.2016.03.24.

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A numerical study of natural convection was conducted with Code Saturne soft ware package. A numerical model based on combined k-ω SST turbulence model was developed. The results of simulation of natural convection in enclosed volume of air were obtained in two variants of boundary conditions specification: by heat flux and by heat transfer coefficient. The problem was solved in a non-stationary formulation using a pressure-velocity coupling algorithm PISO. This simulation model adequacy is evaluated. Experimental data on the temperature profile in the central section is used as a benchmark criteria. Assumptions about the destructive factors reducing the accuracy of the solution, are partly supported by the results of comparative analysis of the intensity of convective mixing. Assumptions partially confirmed by the results of comparative analysis of the intensity of convective mixing, performed on the basis of upward velocity profiles for the heated air.
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Oresta, Paolo, Laura Fabbiano, and Gaetano Vacca. "Wind Reversal in Bubbly Natural Convection." Applied Sciences 10, no. 22 (November 20, 2020): 8242. http://dx.doi.org/10.3390/app10228242.

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The multi-phase Rayleigh–Bènard convection has been weakly investigated, even though it plays a leading role in the theoretical and applied physics of the heat transfer enhancement. For the case of moderate turbulent convection, a rather unexpected result is an unusual kind of wind reversal, in the sense that the fluid is found to be strongly influenced by the bubbles, whereas the bubbles themselves appear to be little affected by the fluid, despite the relative smallness of the Stokes numbers. The wind reversal induced by the bubbles dispersed in the fluid is a new and remarkable phenomenon in multi-phase flows that provides further perspectives in understanding the complex physics leading the enhancement of thermal convection. For this reason, the fundamental research proposed in this paper aimed to identify a space of control parameters and the physical mechanisms responsible for the wind reversal induced by dispersed bubbles in a confined convective flow. The strength of the following description lies in an innovative numerical approach, based on the multi-scale physics induced by the coupling of the local thermal and mechanical mechanisms arising between each bubble and the surrounding fluid. The continuous phase has been solved numerically using the direct numerical simulation (DNS) technique and each bubble has been tracked by means of a particle Lagrangian model.
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Zakharov N.S., Pokusaev B.G., Vyazmin A.V., Nekrasov D.A., Sulyagina O.A., and Moshin A.A. "Research of heat transfer processes in hydrogels by holographic interferometry and gradient thermometry." Technical Physics Letters 48, no. 5 (2022): 7. http://dx.doi.org/10.21883/tpl.2022.05.53551.19058.

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The study of natural convection in structured optically transparent materials using pure and combined agarose-gelatin gels was carried out by optical holography. The article presents data on visualization of the occurrence and development of convective flows in such gels with non-stationary conductive heating from below. The similarities and differences of the conditions of heat transfer and the occurrence of convection in structured materials and droplet liquids are analyzed. For the first time experimentally obtained data on the effect of two interpenetrating and interacting structured media on the transition from conductive to convective heat transfer. Keywords: natural convection in gels, optical holography, hydrogels, three-dimensional bioprinting.
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Dissertations / Theses on the topic "Natural Convection"

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Novev, Yavor Kirilov. "Natural convection in electrochemical systems." Thesis, University of Oxford, 2018. http://ora.ox.ac.uk/objects/uuid:b8badcfd-e376-4ff6-b2da-b8f821871777.

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This thesis is concerned with modelling natural convective flows and specifically with their role in electrochemistry. The studies described here demonstrate that many electroanalytical techniques are prone to non-negligible natural convective effects, thus making the standard assumption for purely diffusional mass transport inapplicable. The chosen approach focusses on investigating idealized systems and establishing orders of magnitude for the quantities of interest. The complexity of the observed natural convective flows and their strong dependence on factors such as container geometry serve as compelling arguments for rigorously excluding natural convection in experimental measurements. The text is structured as follows. Chapter 1 introduces the theoretical framework used in the rest of the text and gives an outline of the electrochemical techniques to which the results in later chapters apply. Chapter 2 surveys the literature on natural convection in electrochemistry and emphasizes recent developments. Chapter 3 studies the natural convection induced by the intrinsic heat of an electrochemical reaction, specifically its effect on mass transport in chronoamperometry and cyclic voltammetry. Chapters 4-6 deal exclusively with coupled heat and momentum transport. Chapter 4 considers the thermal convective flows that arise in an idealized cell for scanning electrochemical microscopy (SECM) and the surrounding air under conditions of imperfect thermostating. Chapter 5 is dedicated to thermal convection in an SECM cell that is being thermostated from below through a solid substrate. This chapter demonstrates the influence of the spatial distribution of substrate thermal conductivity on the observed flows and highlights this effect by using a simpler model of the SECM cell than Chapter 4. Chapter 6 investigates the thermal convection in a novel thermostated cell for electrochemical measurements. Chapter 7 contains the main conclusions from the studies described in the thesis. Appendices A, B and C provide additional data for Chapters 3, 5 and 6, respectively.
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Ihle, Bascuñán Christian. "Spatiotemporal Features of Natural Convection." Tesis, Universidad de Chile, 2011. http://repositorio.uchile.cl/handle/2250/102700.

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Esta tesis, consistente en una recopilación de artículos de investigación originales autocontenidos, se ocupa del estudio de los mecanismos físicos que explican algunas características de la dinámica de convección térmica con aplicación a convección penetrativa, frecuentemente observada en lagos y reservorios chilenos. Este fenómeno consiste en la aparición de un campo de flujo derivado del enfriamiento superficial de una masa de de fluido donde potencialmente puede existir una estratificación de densidad previa. Si bien este problema ha sido extensivamente estudiado empleando experimentos de pequeña escala (desde 1 mm hasta unos pocos centímetros), no es el caso para sistemas naturales de mayor tamaño, donde los flujos son comúnmente turbulentos y la dinámica asociada está además acoplada con perturbaciones espaciotemporales, incluyendo temperatura ambiente y vientos locales. El presente trabajo se ocupa de algunas de estas interrogantes, incluyendo las condiciones requeridas para la aparición de convección penetrativa bajo condiciones de borde térmicas que dependen del tiempo y suponiendo ausencia de viento. Primero, se consideró el caso más simple de un enfriamiento superficial repentino, modelado como una capa horizontal infinita, inicialmente en reposo, de fluido de Boussinesq. La siguiente fase de este estudio consistió en la elaboración de un modelo teórico simplificado, propuesto como una base para dar cuenta de la estabilidad de sistemas de pequeña escala frente a patrones de forzamiento térmico sinusoidales, buscando así un símil al efecto de enfriamiento vespertino o nocturno en lagos en los casos donde además hay turbulencia media nula antes del comienzo del flujo convectivo. Un segundo aspecto de este trabajo de tesis fue el estudio del efecto de la presencia de fuentes y sumideros térmicos cercanos. Para condiciones débiles de calentamiento y enfriamiento, se ha encontrado que el estudio de esta configuración es equivalente al estudio de la interacción entre plumas térmicas y corrientes de densidad en régimen laminar. Se ha perseguido los objetivos mencionados empleando una combinación de métodos, incluyendo simulaciones numéricas, técnicas analíticas de perturbación para el estudio de la estabilidad de los sistemas referidos modelados a través de las ecuaciones de Navier-Stokes y energía, además de la realización de experimentos. En este último caso, se propone una técnica de medición simultánea de los campos vectoriales de velocidad (usando PIV) y gradiente de densidad (usando schlieren sintético). La naturaleza inherentemente delicada de los experimentos llevados a cabo hizo necesario el desarrollo de sistemas de control ad-hoc. Como resultado de estas actividades, ha sido posible vincular las propiedades del fluido con parámetros adimensionales (incluyendo los números de Prandtl y Rayleigh), para dar cuenta de los tiempos de inicio de convección y frecuencia de forzamiento térmico en la superficie (entre otros). Del estudio de inhomogeneidades espaciotemporales, se encontró que las plumas térmicas bidimensionales laminares pueden sobrevivir el impacto con una corriente de gravedad modificando, sin embargo, su posición original.
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Khane, Vaibhav B. "Analogy based modeling of natural convection." Diss., Rolla, Mo. : Missouri University of Science and Technology, 2009. http://scholarsmine.mst.edu/thesis/pdf/Khane_09007dcc807046fe.pdf.

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Thesis (M.S.)--Missouri University of Science and Technology, 2009.
Vita. The entire thesis text is included in file. Title from title screen of thesis/dissertation PDF file (viewed November 25, 2009) Includes bibliographical references (p. 23-24).
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Jansen, Adrian J. "Natural convection above a horizontal heat source." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from the National Technical Information Service, 1993. http://handle.dtic.mil/100.2/ADA267212.

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Omranian, Seyed Ali. "The computation of turbulent natural convection flows." Thesis, University of Manchester, 2011. https://www.research.manchester.ac.uk/portal/en/theses/the-computation-of-turbulent-natural-convection-flows(f3b90728-2194-48cb-8162-a94f190b7792).html.

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Fournier, Martin. "Natural convection in two-dimensional irregular cavities." Thesis, University of British Columbia, 1986. http://hdl.handle.net/2429/26288.

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Natural convection in two-dimensional irregular cavities was simulated by numerically solving the steady-state conservation equations written in terms of stream function, vorticity and temperature dependent variables and for a general orthogonal coordinate system. It was assumed that the Boussinesq approximations were valid, that the fluid was Newtonian and that the properties other than density were constant. The use of orthogonal coordinates and the above set of dependent variables was found to have several advantages over the use of Cartesian or non-orthogonal systems and the set of primitive dependent variables (velocities, pressure and temperature). The body-fitted orthogonal coordinate system was numerically generated by means of the weak constraint method of Ryskin and Leal [26], Special forms of the Wood and second-order vorticity boundary conditions were derived for a general two-dimensional body-fitted orthogonal coordinate system. Finite difference techniques were used to solve the resulting set of differential equations. The effects of the mapping characteristics, the vorticity boundary conditions and the finite difference grid size on the accuracy of the natural convection solution were investigated first. For the cavity geometries studied,, it was observed that, except for grid boundary conditions which led to undesirable grids, most combinations of grid and vorticity boundary conditions gave results of acceptable accuracy (relative error less than one percent) as long as a sufficiently fine grid size (28x28 or finer) was employed. The effects of the cavity geometry and the Rayleigh number on natural convection were investigated in Part II. It was found that increasing the Rayleigh number always acted to enhance both the natural convection circulation and the heat transfer rate, a result which was easily explained by examining the source term of the momentum equation. The effect of the cavity geometry was more complex but these results could also be interpreted by examining the influence of the cavity shape in impeding or enhancing fluid circulation and the opposing effects of the distance between isothermal walls on conductive and convective heat transfer. The possibility of using a similar numerical procedure to simulate a melting or a freezing process was investigated in Part III. Numerical predictions of the circulating flow in the liquid phase of an ice forming process were obtained by digitizing the photographic image of a real ice interface and using the true non-linear relationship between density and temperature for water at low temperature. The numerical results were in reasonable agreement with the flow visualization experiments carried out by Eckert [42].
Applied Science, Faculty of
Chemical and Biological Engineering, Department of
Graduate
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Safier, Paul Alan. "Electrically-Driven Natural Convection in Colloidal Suspensions." Diss., Tucson, Arizona : University of Arizona, 2005. http://etd.library.arizona.edu/etd/GetFileServlet?file=file:///data1/pdf/etd/azu%5Fetd%5F1122%5F1%5Fm.pdf&type=application/pdf.

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Hort, Matthew C. "Transient natural convection within horizontal cylindrical enclosures." Thesis, University of Surrey, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.313250.

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King, Kevin John. "Turbulent natural convection in rectangular air cavities." Thesis, Queen Mary, University of London, 1989. http://qmro.qmul.ac.uk/xmlui/handle/123456789/25786.

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The velocity and temperature fields of several air cavities have been surveyed. The cavities operated in the transitional boundary layer regime with vertical, opposing, isothermal heated and cooled walls. The cavity height, width, temperature difference and wall insulation were all changed during the study, with the aspect ratio varying from 4 to 10, and RaH varying from 2,263x10 to 4.486x101e. The local velocity and temperature were measured simultaneously using a laser Doppler anemometer and a 25jim chromel-alumel thermocouple. This allowed the turbulence quantity tT to be measured directly, as well as the mean and root mean square of the fluctuations of velocity and temperature. Several other quantities, which have not previously been available, were derived from the measured data, these were the wall shear stress, the mean lateral velocity, u'v', and v'T'. The effect of a decrease of the level of insulation on the vertical walls was to decrease the non-dimensional temperature of the fluid at the vertical centre-line. Different thermal boundary conditions on the horizontal walls resulted in significant differences between the heated and cooled wall, thermal and velocity, boundary layers. A decrease in the cavity width was seen to alter the characteristics of the mean velocity and temperature profiles when the width was less than twice the lateral extent of either boundary layer in a cavity with a larger width. Near wall distributions of u'v' have shown that the viscous sub-layer was approximately 4mm thick. Calculations of power spectral density, together with inspection of time histories, have confirmed that a laminar flow was present at the bottom of the heated wall. P.S.D. calculations showed that the dominant frequencies of transition were multiples of a base frequency and dependent on the local temperature drop between the wall and the "environment". The power relationship between frequency and power spectral density has been shown to depend on the local vertical temperature gradient. Three sub-ranges were identified in the velocity spectra, whereas four were identified in the temperature spectra. The equivalent ranges in the velocity and temperature spectra exhibited different powers on the frequency, with those of the temperature field being larger.
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Owinoh, Antony Zachariah. "Natural convection driven by heating from below." Thesis, University of Cambridge, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.625011.

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Books on the topic "Natural Convection"

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Boetcher, Sandra K. S. Natural Convection from Circular Cylinders. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-08132-8.

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S, Kakaç, Aung W, Viskanta Raymond, and NATO Advanced Study Institute, eds. Natural convection: Fundamentals and applications. Washington: Hemisphere Pub. Corp., 1985.

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Smith, E. P. R. Natural convection flows in cavities. Birmingham: University of Birmingham, 1987.

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Meeting, American Society of Mechanical Engineers Winter. Convective transport. New York, N.Y: American Society of Mechanical Engineers, 1987.

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American Society of Mechanical Engineers. Winter Meeting. Convective transport: Presented at the Winter Annual Meeting of the American Society of Mechanical Engineers, Boston, Massachusetts, December 13-18, 1987. New York, N.Y. (345 E. 47th St., New York 10017): ASME, 1987.

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American Society of Mechanical Engineers. Winter Meeting. Fundamentals of natural convection, 1993: Presented at the 1993 ASME Winter Annual Meeting, New Orleans, Louisiana, November 28-December 3, 1993. New York, N.Y: American Society of Mechanical Engineers, 1993.

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American Society of Mechanical Engineers. Winter Meeting. Natural convection in enclosures-- 1988: Presented at the Winter Annual Meeting of the American Society of Mechanical Engineers, Chicago, Illinois, November 27-December 2, 1988. New York, N.Y: American Society of Mechanical Engineers, 1988.

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American Society of Mechanical Engineers. Winter Meeting. Natural convection in enclosures-- 1986: Presented at the Winter Annual Meeting of the American Society of Mechanical Engineers, Anaheim, California, December 7-12, 1986. New York: The American Society of Mechanical Engineers, 1986.

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Linthorst, Stephanus Johannes Maria. Natural convection suppression in solar collectors. Pijnacker: Dutch Efficiency Bureau, 1985.

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A, Tyvand Peder, ed. Time-dependent nonlinear convection. Southampton: Computational Mechanics Publications, 1998.

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Book chapters on the topic "Natural Convection"

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Becker, Martin. "Natural Convection." In Heat Transfer, 201–29. Boston, MA: Springer US, 1986. http://dx.doi.org/10.1007/978-1-4684-1256-7_8.

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Ghiaasiaan, S. Mostafa. "Natural convection." In Convective Heat and Mass Transfer, 313–66. Second edition. | Boca Raton : Taylor & Francis, CRC Press, 2018. | Series: Heat transfer: CRC Press, 2018. http://dx.doi.org/10.1201/9781351112758-10.

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Venkateshan, S. P. "Natural Convection." In Heat Transfer, 763–813. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-58338-5_16.

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Simonson, J. R. "Natural convection." In Engineering Heat Transfer, 124–35. London: Macmillan Education UK, 1988. http://dx.doi.org/10.1007/978-1-349-19351-6_8.

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Han, Je-Chin, and Lesley M. Wright. "Natural Convection." In Analytical Heat Transfer, 319–36. 2nd ed. Boca Raton: CRC Press, 2022. http://dx.doi.org/10.1201/9781003164487-9.

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Wang, C. Y. "Natural Convection." In Synthesis Lectures on Mechanical Engineering, 55–78. Cham: Springer Nature Switzerland, 2024. http://dx.doi.org/10.1007/978-3-031-59087-0_4.

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Nield, Donald A., and Adrian Bejan. "External Natural Convection." In Convection in Porous Media, 79–139. New York, NY: Springer New York, 1992. http://dx.doi.org/10.1007/978-1-4757-2175-1_5.

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Nield, Donald A., and Adrian Bejan. "External Natural Convection." In Convection in Porous Media, 145–220. New York, NY: Springer New York, 2012. http://dx.doi.org/10.1007/978-1-4614-5541-7_5.

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Nield, Donald A., and Adrian Bejan. "External Natural Convection." In Convection in Porous Media, 161–239. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-49562-0_5.

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Nield, Donald A., and Adrian Bejan. "External Natural Convection." In Convection in Porous Media, 105–74. New York, NY: Springer New York, 1999. http://dx.doi.org/10.1007/978-1-4757-3033-3_5.

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Conference papers on the topic "Natural Convection"

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"Natural Convection, Mixed Convection." In CONV-09. Proceedings of International Symposium on Convective Heat and Mass Transfer in Sustainable Energy. Connecticut: Begellhouse, 2009. http://dx.doi.org/10.1615/ichmt.2009.conv.470.

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de Vahl Davis, Graham. "Unnatural Natural Convection." In Heat and Mass Transfer Australasia. Connecticut: Begellhouse, 2023. http://dx.doi.org/10.1615/978-1-56700-099-3.20.

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Nikitin, M. N. "Modeling of natural convection." In 2016 2nd International Conference on Industrial Engineering, Applications and Manufacturing (ICIEAM). IEEE, 2016. http://dx.doi.org/10.1109/icieam.2016.7911583.

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Hoogendoorn, Charles J. "NATURAL CONVECTION IN ENCLOSURES." In International Heat Transfer Conference 8. Connecticut: Begellhouse, 1986. http://dx.doi.org/10.1615/ihtc8.2330.

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Henze, Marc, Bernhard Weigand, and Jens von Wolfersdorf. "Natural convection inside airships." In 9th AIAA/ASME Joint Thermophysics and Heat Transfer Conference. Reston, Virigina: American Institute of Aeronautics and Astronautics, 2006. http://dx.doi.org/10.2514/6.2006-3798.

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Arpacı, Vedat S. "Microscales of Natural Convection." In ASME 1997 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 1997. http://dx.doi.org/10.1115/imece1997-0888.

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Abstract A universal dimensionless number, ΠN∼NN1+Pr-1 ,Pr being the usual Prandtl number and NN the limit of ΠN for Pr → ∞, is introduced for all natural convection processes. For NN=Ra ,Ra being the usual Rayleigh number, ΠN describes buoyancy-driven natural convection. For NN=Ma ,Ma being the usual Marangoni number, ΠN describes thermocapillary-driven natural convection. For NN=TaPr ,Ta being the usual Taylor number, ΠN describes centrifugally-driven natural convection. In terms of ΠN, a thermal Kolmogorov scale relative to an integral scale, ηθℓ∼ΠN-1/3 is introduced for natural convection including buoyancy, thermocapillary and centrifugally-driven flows. Heat transfer associated with these flows is modeled byNu∼ΠN1/3 ,Nu being the usual Nusselt number. A variety of turbulent natural convection phenomena are shown correlating the model.
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Churchill, Stuart W. "The Prediction of Natural Convection." In International Heat Transfer Conference 3. Connecticut: Begellhouse, 2019. http://dx.doi.org/10.1615/ihtc3.880.

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Wilkie, David. "SOME DOUBTFUL NATURAL CONVECTION CORRELATIONS." In International Heat Transfer Conference 9. Connecticut: Begellhouse, 1990. http://dx.doi.org/10.1615/ihtc9.3300.

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Wu, J. S., P. K. Wu, and V. Arpaci. "Radiation affected turbulent natural convection." In 32nd Aerospace Sciences Meeting and Exhibit. Reston, Virigina: American Institute of Aeronautics and Astronautics, 1994. http://dx.doi.org/10.2514/6.1994-350.

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Daly, John, and Mark Davies. "A Natural Convection DNA Amplifier." In ASME 4th International Conference on Nanochannels, Microchannels, and Minichannels. ASMEDC, 2006. http://dx.doi.org/10.1115/icnmm2006-96244.

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Natural convection is the driver of innumerable natural world phenomena. Within the laboratory, it offers simplified geometries and flow structures without the need for auxiliary flow inducement, thereby greatly reducing the risk of external contamination within biomedical applications. Outlined in this paper is a polymerase chain reaction (PCR) device which takes advantage of these distinct qualities. PCR has become synonymous with DNA amplification in molecular biology laboratories throughout the world, and at the heart of PCR is thermal cycling. Commonly PCR is accomplished utilising a three stage thermal cycle, however, the device presented employs an alternative two stage cycle which facilitates a simplified natural convection flow structure. The device is, in its fundamental design format, a well-based thermocycler with fast reaction times of 15 minutes. Through the use of Particle Image Velocimetry (PIV) and flow visualisation techniques, a better understanding of the flow structures and their effect on PCR is attained within a device of dimensions of 1 mm depth by 10mm width and 10mm height. This device may present an opportunity for the development of a practical and inexpensive single gene diagnostic tool. Presented here are the findings of the amplification of an 86-bp fragment of the pGEM®-T vector (Promega) within the convective flow loop.
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Reports on the topic "Natural Convection"

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G.H. Nieder-Westermann. In-Drift Natural Convection and Condensation. Office of Scientific and Technical Information (OSTI), March 2005. http://dx.doi.org/10.2172/850421.

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McEligot, D. M., D. A. Denbow, and H. D. Murphy. Transient natural convection in heated inclined tubes. Office of Scientific and Technical Information (OSTI), May 1990. http://dx.doi.org/10.2172/7014843.

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Clarksean, R. Experimental analysis of natural convection within a thermosyphon. Office of Scientific and Technical Information (OSTI), September 1993. http://dx.doi.org/10.2172/10188066.

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FRANCIS, JR, NICHOLAS D., MICHAEL T. ITAMURA, STEPHEN W. WEBB, and DARRYL L. JAMES. Two-Dimensional CFD Calculations for YMP Natural Convection Tests. Office of Scientific and Technical Information (OSTI), May 2003. http://dx.doi.org/10.2172/811338.

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Langerman, M. A. Natural convection heat transfer analysis of ATR fuel elements. Office of Scientific and Technical Information (OSTI), May 1992. http://dx.doi.org/10.2172/5084332.

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Langerman, M. A. Natural convection heat transfer analysis of ATR fuel elements. Office of Scientific and Technical Information (OSTI), May 1992. http://dx.doi.org/10.2172/10163922.

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Britt, T. E. Natural convection burnout heat flux limit for control rods. Office of Scientific and Technical Information (OSTI), April 1986. http://dx.doi.org/10.2172/10172829.

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Webb, S. Calculation of natural convection boundary layer profiles using the local similarity approach including turbulence and mixed convection. Office of Scientific and Technical Information (OSTI), July 1989. http://dx.doi.org/10.2172/5589306.

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John Crepeau, Jr Hugh M. Mcllroy, Donald M. McEligot, Keith G. Condie, Glenn McCreery, Randy Clarsean, Robert S. Brodkey, and Yann G. Guezennec. Flow Visualization of Forced and Natural Convection in Internal Cavities. Office of Scientific and Technical Information (OSTI), January 2002. http://dx.doi.org/10.2172/792284.

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Canaan, R. E. Natural convection heat transfer within horizontal spent nuclear fuel assemblies. Office of Scientific and Technical Information (OSTI), December 1995. http://dx.doi.org/10.2172/573364.

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