liquid flow in pipes pressure drop and heat transfer
Effect of periodic suction on three dimensional flow and heat transfer past a vertical porous plate embedded in a porous medium
... summarize the following results of physical interest on the velocity and temperature of the flow field and also on skin friction and the rate of heat transfer at the wall The effect of growing permeability ... scholars and presently guiding 15 Ph D scholars Now he is carrying on his Post Doc Research in MHD flow through Porous Media His major fields of study are MHD flow, Heat and Mass Transfer Flow through ... velocity and temperature of the flow field are solved employing perturbation technique and the effects of the pertinent parameters on the velocity, temperature, skin friction and the rate of heat transfer...
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Natural convection unsteady magnetohydrodynamic mass transfer flow past an infinite vertical porous plate in presence of suction and heat sink
... of Physics in Gandhi Institute of Engineering and Technology, Gunpur, Orissa (India) from 2002-2003 and presently working as the Vice-Principal and Head of the faculty of Physics in Jupiter +2 ... Energy and Environment (IJEE), Volume 3, Issue 2, 2012, pp.209-222 220 4.4 Skin friction and rate of heat transfer Variations in the values of skin friction τ and the heat flux i e rate of heat transfer ... non-MHD flow and decreases it at the wall in case of MHD flow On the other hand, a growing magnetic parameter M decreases the effect at all points The effect of increasing Prandtl number Pr is to increase...
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Granular flow and heat transfer in a screw conveyor heater a discrete element modeling study
... simulate flow and heating of granular material in rotating vessels Their study focused on the mixing and heating performance of a calciner and an impregnator, represented by a cylindrical vessel and ... Understanding the underlying mechanisms in terms of these interactions is critical if granular processing and handling technologies were to advance towards greater efficiencies and sustainability Since ... mainly triggered by and rising of fuel costs and increasing worldwide demand for energy There is much reported work on upgrading of LRC by both academia and industry with thermal drying being...
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Granular flow and heat transfer in a screw conveyor heater a discrete element modeling study
... simulate flow and heating of granular material in rotating vessels Their study focused on the mixing and heating performance of a calciner and an impregnator, represented by a cylindrical vessel and ... Understanding the underlying mechanisms in terms of these interactions is critical if granular processing and handling technologies were to advance towards greater efficiencies and sustainability Since ... mainly triggered by and rising of fuel costs and increasing worldwide demand for energy There is much reported work on upgrading of LRC by both academia and industry with thermal drying being...
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Báo cáo " Impacts of climate change on the flow in Hong-Thai Binh and Dong Nai river basins " docx
... that: in the three scenarios, the average flow has an increasing tendency in Hong-Thai Binh river basin and a decreasing one in Dong Nai river basin For seasonal flow, in Hong-Thai Binh river basin, ... 3.2 Flood season flow According to three climate change scenarios, there are increasing trends of flood season flow in Hong-Thai Binh basin In general, the increase in flood flow in the A2 scenario ... use and DEM, Hong-Thai Binh and Dong Nai basin were divided into 16 and 29 sub-basins Table NAM model parameters of some main sub-basins in Hong-Thai Binh basin No Sub-basin Area (km2 ) Lai Chau...
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Báo cáo " Impacts of climate change on the flow in Hong-Thai Binh and Dong Nai river basins " doc
... that: in the three scenarios, the average flow has an increasing tendency in Hong-Thai Binh river basin and a decreasing one in Dong Nai river basin For seasonal flow, in Hong-Thai Binh river basin, ... 3.2 Flood season flow According to three climate change scenarios, there are increasing trends of flood season flow in Hong-Thai Binh basin In general, the increase in flood flow in the A2 scenario ... use and DEM, Hong-Thai Binh and Dong Nai basin were divided into 16 and 29 sub-basins Table NAM model parameters of some main sub-basins in Hong-Thai Binh basin No Sub-basin Area (km2) Lai Chau...
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hydrodynamics, mass, and heat transfer in chemical engineering, crc (2002) - opet
... considered Film and jet flows, fluid flows through tubes and channels of various shapes, and flow past plates, cylinders, and disks are examined In Chapters and we analyze mass and heat transfer in plane ... Mass and Heat Transfer in Liquid Films Tubes and Boundary Layers 3.1 Convective Mass and Heat Transfer Equations and Boundary Conditions 3.1-1 Mass Transfer Equation Laminar Flows ... MASS AND HEAT TRANSFER IN CHEMICAL ENGINEERING Topics in Chemical Engineering A series edited by R Hughes, University of Salford, UK Volume HEAT AND MASS TRANSFER W PACKED BEDS by N Wakao and...
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mass and heat transfer analysis of mass contactors and heat exchangers (cambridge series in chemical engineering)
... courses in mass and heat transfer in that more emphasis is placed on mass transfer and the importance of systematic analysis The course in mass and heat transfer in the chemical engineering curriculum ... chemical engineering students take this course in mass and heat transfer the spring semester of their junior year, after having courses in thermodynamics, kinetics and reactor design, and fluid mechanics ... problems to gain insight into the small-scale fluid motions affecting heat and mass transfer Figure 1.2, modified from that presented in Introduction to Chemical Engineering Analysis by Russell and Denn...
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Báo cáo hóa học: " Review of thermo-physical properties, wetting and heat transfer characteristics of nanofluids and their applicability in industrial quench heat treatment" pot
... State of the art in quenching In Quenching and Carburizing Proceedings of the Third International Seminar of the International Federation for Heat Treatment and Surface Engineering Edited by: Hodgson ... silica coating over the heater surface [117] Wen and Ding observed a significant enhancement in the pool boiling heat transfer of alumina nanofluids The enhancement increases with increasing particle ... CHF during pool boiling of nanofluids increased even when the pool boiling heat transfer of nanofluid may decrease or remain unchanged During quench hardening process, the surface heat transfer...
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báo cáo hóa học:" Research Article Variable Viscosity on Magnetohydrodynamic Fluid Flow and Heat Transfer over an Unsteady Stretching Surface with Hall Effect" pot
... variable heat flux P S Gupta and A S Gupta examined the heat and mass transfer for the boundary layer flow over a stretching sheet subject to suction and blowing Elbashbeshy and Bazid studied heat and ... conducting, and thermocapillarity on the flow and heat transfer in a laminar liquid film on a horizontal stretching sheet Mukhopadhyay 14 presented solutions for unsteady boundary layer flow and heat transfer ... magnetohydrodynamic flow and heat transfer of a viscous, incompressible, and electrically conducting fluid past a semi -in nite stretching sheet was investigated The governing continuum equations that...
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static behaviour of natural gas andits flow in pipes
... behaviour and its downhill flow in pipes The problem of calculating pressure transverse during downhill gas flow in pipes is encountered in the transportation of gas to the market and in gas injection ... tubing pressure at the surface = 2122 psia when the bottom hole pressure (inlet pressure) = 2545 psia Then pressure drop = 2545 psia – 2122 psia = 423 psia The pressure drop during down hill flow ... Gas flow in Pipes , Journal of Petroleum Science and Engineering, No 14, pp 137 – 158 13 Standing, M.B., and D.L Katz (1942) “Density of Natural Gases”, Trans AIME 146, pp 140–9 14 Standing,...
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Manipulation of turbulent flow for drag reduction and heat transfer enhancement 1
... coating shall be replaced frequently Considering the cost of installing and maintaining, the performance benefits of riblet coating are marginal Riblets have also been used in Olympics Games and ... spot remains constant, and the rounding off radius changes in the circumference coordinate), and found asymmetrical flow pattern and potential increase of heat transfer Following on, Isaev and co-workers ... allow higher inlet temperature in the turbine systems, resulting in augmentation in efficiency, thrust and durability In a heat exchanger, the heat is first convected from the fluid to the heat exchanger...
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Manipulation of turbulent flow for drag reduction and heat transfer enhancement 2
... area/volume goodness factor means smaller heat transfer surface area/volume under a given pumping power and fluid, resulting in a smaller and lighter heat exchanger matrix 53 2.3 2.3.1 Numerical ... streamwise and spanwise edges of the domain for velocity ui and fluctuating pressure p and temperature T 49 2.2 Calculation of the thermo-aerodynamic performance It is important to determine the ... are employed as reference to validate the numerical results, and are obtained using the Petukhov and Gielinski correlations (Incropera and DeWitt, 2002), respectively: Cf = [1.58 ln (Re 2H ) − 2.185]−2...
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Manipulation of turbulent flow for drag reduction and heat transfer enhancement 3
... on sinusoidal grooves in turbulent channel flow In this section, all the wall shapes tested in this study will be introduced, including sinusoidal, triangular and trapezoidal grooves 3.1.1 Sinusoidal ... the pressure term in Eqs 3.17 and 3.18 is dominant, thus the local skin friction in the wide and narrow portions is respectively larger and smaller than that for the flat channel This difference in ... = 0.5 < αc which results in drag reduction) Sm/Sm0 in the wide portion increases with increasing S, and conversely Sm/Sm0 decreases in the narrow portion with increasing S This is possibly due...
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Manipulation of turbulent flow for drag reduction and heat transfer enhancement 4
... enhancing the heat transfer Thus, reducing the recirculation region can lead to increased heat transfer rate Recirculation region will reduce skin friction and increase the form drag However, the increment ... experimental results in Burgess and Ligrani (2005) N u/N u0 increases continuously with an increase of Dx, and the pressure loss ratio Cf /Cf first increases and then decreases with an increase of Dx ... intense than that in symmetric dimple, which may be the cause of the enhancement of heat transfer 4.4.2 Mean characteristics of drag and heat transfer Since Case has higher heat transfer characteristics...
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Manipulation of turbulent flow for drag reduction and heat transfer enhancement 5
... 10% and 20% are compared and shown 5.2.3.1 Mean flow field In this section, the mean flow field (streamlines) based on time averaged velocity field are investigated The streamlines in the vicinity ... 20%) coincide with the impingement between vortex and protrusion wall There is more intense mixing between the center region of channel and near-wall region, and stronger vortices which impinge ... streamlines follows the surface profile of the protrusion on the wind-ward side and over the top and then join the freestream In addition, the higher protrusion tends to trigger more intense mixing...
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A generalised lattice boltzmann model of fluid flow and heat transfer with porous media
... particles are defined as moving and interacting in an imagined world obtained by a CHAPTER INTRODUCTION discretization of the real world, according to a set of simplified and relevant rules Although ... drying process, porous bearing, solar collectors, heat pipes, nuclear reactors, and crude oil extraction, the characteristics of fluid flow and heat transfer at the interface region of mixed system ... developed in modeling flow transport in porous media In these models, the drag forces and the fluid forces were considered in the momentum equation (Tien 1990, Hsu and Cheng 1990, and Nithiarasu...
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Numerical computation of the fluid flow and heat transfer between the annuli of concentric and eccentric horizontal cylinders
... categorized into three types, and characteristics of flow patterns and heat transfer are elucidated For the flows in horizontal eccentric annulus, the flow and the heat transfer are strongly influenced ... motion and heat- transfer processes in the annular space between eccentric cylinders when the inner cylinder is heated and rotating The overall equivalent thermal conductivity ( K eq ) is obtained ... heat and fluid flow in concentric annuli with outer cylinder rotating The overall and local heat transfer coefficients over a wide range of Rayleigh numbers and at various radius ratios are investigated...
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