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Effects of inlet velocity profile and swirl on the cooling characteristics of a laminar jet
Discover Mechanical EngineeringThe outcomes of numerical and experimental studies performed on a laminar circular swirling jet impinging on a flat surface is presented. In the numerical studies the computational domain is three-dimensional, which aids in predicting the complexity of ...
Vivek Mathew Jose
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Buoyancy Driven Heat Transfer in Cavities Subjected to Thermal Boundary Conditions at Bottom Wall
Journal of Applied Fluid Mechanics, 2012 Natural convection in cavities is studied numerically using a finite volume based computational procedure. The enclosure used for flow and heat transfer analysis has been bounded by adiabatic top wall, constant temperature cold vertical walls and a ...
b aswath +3 more
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INVESTIGATION OF CONVECTION HEAT TRANSFER FOR HIGH INTEGRAL FINNED TUBE HEAT EXCHANGER
Journal of Engineering and Sustainable Development, 2019 The numerical investigation has been performed in this work to evaluate the performance of a triangular finned tube heat exchanger. In numerical work, the effect of space (2.5, 3 and 3.5 mm) distance between every two finned shaped and the volumetric ...
Muna Sabah Kassim, Hadeer Sattar Gaber
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Ethos: Jurnal Penelitian dan Pengabdian kepada Masyarakat, 2017 The crossflow in cylinder marked by the phenomenon of stagnation point, shear layer separation and wake formation. Characteristics of flow regimes can be unsteady laminar flow (the formation of vortex shedding regime), transitional (regime with the ...
Arif Kurniawan
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The Nusselt number of a hot sphere levitated by a volatile pool
Journal of Fluid MechanicsWhen placed at the surface of a volatile liquid, a sphere of hot dense non-volatile material remains suspended until it cools sufficiently. The duration of this ‘inverse Leidenfrost’ phenomenon depends on the Nusselt number $Nu$ of the sphere, itself determined by flow in the film of vapour separating particle and liquid. It
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Rayleigh-Bénard convection: bounds on the Nusselt number
, 2016 We examine the Rayleigh–Bénard convection as modelled by the Boussinesq equation. Our aim is at deriving bounds for the heat enhancement factor in the vertical direction, the Nusselt number, which reproduce physical scalings. In the first part of the dissertation, we examine the the simpler model when the acceleration of the fluid is neglected (Pr ...
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Nusselt number scaling in tokamak plasma turbulence
Nusselt number scaling in tokamak plasma turbulenceK. Takeda et al., Physics of Plasmas 12, 052309 (2005) https://doi.org/10.1063/1.1895165 Anomalous heat transport caused by ion temperature gradient (ITG) driven turbulence in tokamak plasmas is evaluated from numerical simulations of the two-dimensional (2D) partial-differential equations of the ITG model and of a reduced 1D version derived from a ...
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Experimental relationships for heat flux, nusselt number and temperature
, 1996 In this study, a heater with finned surface, having a large application field in practice and working in accordance with the principle of natural convection heat transfer, is investigated. Tn such systems, the increase of heat transfer coefficient is obtained by preventing the rise of the thickness of the thermal layer using an obstacle on the heater ...
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A regenerator—prediction of nusselt numbers
International Journal of Heat and Mass Transfer, 1969Abstract The dynamics of a parallel plate regenerative heat exchanger are studied using a model in which resistance to heat transfer is due to diffusional resistance in the fluid in the direction transverse to flow. The resultant Nusselt number is a function of time as well as longitudinal distance from the entrance of the exchanger and is not a ...
Curtis A. Chase +2 more
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