Results 181 to 190 of about 22,055 (226)
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Nusselt number correlation for synthetic jets
Journal of the Brazilian Society of Mechanical Sciences and Engineering, 2015Among its many applications, synthetic jets have received much consideration as devices with the ability to enhance or even replace more conventional forced convection cooling techniques. This enhanced cooling is a result of the increase in turbulent mixing brought about by the oscillatory nature of the jet.
M. V. Lehnen +2 more
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Rayleigh–Bénard convection: Improved bounds on the Nusselt number
Journal of Mathematical Physics, 2011We consider Rayleigh–Bénard convection as modelled by the Boussinesq equations in the infinite-Prandtl-number limit. We are interested in the scaling of the average upward heat transport, the Nusselt number Nu, in terms of the non-dimensionalized temperature forcing, the Rayleigh number Ra.
Otto, Felix, Seis, Christian
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Physical model of the dependence of the Nusselt number on the Rayleigh number
Technical Physics, 2016The dependence of the Nusselt number on the Rayleigh number at the stage preceding the turbulent regime of convection is substantiated and obtained in analytic form. At this stage, the Nusselt number can be described by the power dependence on the Rayleigh number, which contains five constants.
O. L. Patochkina +2 more
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Nusselt Number Measurements for Turbulent Rayleigh-Bénard Convection
Physical Review Letters, 2003We present high-precision measurements of the Nusselt number N as a function of the Rayleigh number R for a cylindrical sample of water (Prandtl number sigma=4.4) of height L approximately equal to 50 cm and aspect ratio Gamma identical with D/L approximately equal to 1 (D is the diameter) for 3 x 10(9)< or =R< or =6 x 10(10).
Alexei, Nikolaenko, Guenter, Ahlers
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Limit value of the Nusselt number for particles of different shape
International Journal of Heat and Mass Transfer, 2001zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Wadewitz, Antje, Specht, Eckehard
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2015
It can be argued that the exchange of energy between a solid and a fluid is important in most, if not virtually all, practical situations for which heat transfer plays a role. The goal of this chapter is to determine the convective heat transfer coefficients between the coffee and the mug and between the mug and ambient that have been used in the ...
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It can be argued that the exchange of energy between a solid and a fluid is important in most, if not virtually all, practical situations for which heat transfer plays a role. The goal of this chapter is to determine the convective heat transfer coefficients between the coffee and the mug and between the mug and ambient that have been used in the ...
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Procedure for Optimal Formalization of Nusselt Number
2016Theoretical equations of Nusselt number are derived out based on our innovative similarity transformation model. Such theoretical equations show that the wall similarity temperature gradient is the only one unknown variable dominating the evaluation of the Nusselt number.
De-Yi Shang, Liang-Cai Zhong
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A study of Nusselt and Sherwood numbers in a monolith reactor
Catalysis Today, 1999Abstract A two-dimensional model of a single channel of a monolith reactor is used to evaluate the values of the Nusselt and Sherwood numbers under reaction conditions. The circular channel is assumed to have axisymmetry with a first-order reaction occurring at the wall.
R.E. Hayes, S.T. Kolaczkowski
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Drop Nusselt numbers in dropwise condensation
Applied Scientific Research, 1974Most of the theoretical studies in dropwise condensation have based their analysis on the principle that the heat transfer rate limiting mechanism in dropwise condensation is the conduction of heat through drops. Based on this principle, Fatica and Katz presented shape factor values for droplets and these values have been used by other studies.
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Comparative Study of Nusselt Number Correlations for Hitec Molten Salt
2020 2nd Novel Intelligent and Leading Emerging Sciences Conference (NILES), 2020Molten salt has been realized as a potential candidate as a clean non-pollutant heat transfer fluid for concentrated solar power plants because of its high heat capacity and broad ranges of operational temperatures. In this study, the Nusselt number of the commercially known Hitec molten salt is numerically assessed, using k-e model turbulence model ...
Ahmed Ibrahim ElShafei +2 more
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