patterns instabilities and heat transfer mechanisms during flow boiling in minichannels and microchannels

Effect of periodic suction on three dimensional flow and heat transfer past a vertical porous plate embedded in a porous medium

Effect of periodic suction on three dimensional flow and heat transfer past a vertical porous plate embedded in a porous medium

Ngày tải lên : 05/09/2013, 14:58
... 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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An experimental investigation of heat transfer and fluid flow in a rectangular duct with inclined discrete ribs

An experimental investigation of heat transfer and fluid flow in a rectangular duct with inclined discrete ribs

Ngày tải lên : 05/09/2013, 16:10
... accuracy In a recent study, Cho et al [12] investigated the effect of a gap in the inclined rib on heat transfer in a square duct and reported that a gap in the inclined rib accelerates the flow and ... augmented heat transfer and friction in asymmetrically heated rectangular ducts with ribs on the heated wall in transverse, inclined, V-continuous and V- discrete pattern Int Journal of Heat Mass Transfer ... K.R Gandhi B.K and Saini J.S “Investigation of heat transfer and friction using inclined discrete ribs on absorber plate of a solar air heater” 19th National & 8th ISHMT-ASME Heat & Mass Transfer...
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The Thermodynamics, Heat Transfer, and Fluid Flow Fundamentals Handbook

The Thermodynamics, Heat Transfer, and Fluid Flow Fundamentals Handbook

Ngày tải lên : 22/10/2013, 10:15
... converted into an equivalent amount of heat and that heat could be converted into work EO 1.8 DEFINE the following: a Heat b Latent heat c Sensible heat d Units used to measure heat EO 1.9 DEFINE the ... TRANSFER, AND FLUID FLOW The information contained in this handbook is by no means all encompassing An attempt to present the entire subject of thermodynamics, heat transfer, and fluid flow would ... thermodynamic process is increasing the temperature of a fluid while maintaining a constant pressure Another example is increasing the pressure of a confined gas while maintaining a constant temperature...
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  1. Công Nghệ Thông Tin
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doe fundamentals handbook - thermodynamics, heat transfer, and fluid flow - volume 1 of 3

doe fundamentals handbook - thermodynamics, heat transfer, and fluid flow - volume 1 of 3

Ngày tải lên : 17/03/2014, 15:00
... converted into an equivalent amount of heat and that heat could be converted into work EO 1.8 DEFINE the following: a Heat b Latent heat c Sensible heat d Units used to measure heat EO 1.9 DEFINE the ... of job and task analyses, and independent input from contractors and operations-oriented personnel were all considered and included to some degree in developing the text material and learning objectives ... TRANSFER, AND FLUID FLOW The information contained in this handbook is by no means all encompassing An attempt to present the entire subject of thermodynamics, heat transfer, and fluid flow would...
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doe fundamentals handbook - thermodynamics, heat transfer, and fluid flow - volume 2 of 3

doe fundamentals handbook - thermodynamics, heat transfer, and fluid flow - volume 2 of 3

Ngày tải lên : 17/03/2014, 15:00
... regions of the boiling heat transfer curve: a Nucleate boiling b Partial film boiling c Film boiling d Departure from nucleate boiling (DNB) e Critical heat flux HT-02 Page viii Rev Heat Transfer OBJECTIVES ... removing decay heat from a reactor core Rev Page ix HT-02 Heat Transfer Intentionally Left Blank HT-02 Page x Rev Heat Transfer HEAT TRANSFER TERMINOLOGY HEAT TRANSFER TERMINOLOGY To understand and ... typical combined heat transfer situation Figure Combined Heat Transfer Using the figure representing flow in a pipe, heat transfer by convection occurs between temperatures T1 and T2; heat transfer...
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doe fundamentals handbook - thermodynamics, heat transfer, and fluid flow - volume 3 of 3

doe fundamentals handbook - thermodynamics, heat transfer, and fluid flow - volume 3 of 3

Ngày tải lên : 17/03/2014, 15:00
... the continuity equation is: minlets ˙ HT-03 moutlet ˙ moutlets ˙ Page 16 Rev Fluid Flow LAMINAR AND TURBULENT FLOW LAMINAR AND TURBULENT FLOW The characteristics of laminar and turbulent flow are ... mode of flow This is also an important consideration in certain applications that involve heat transfer to the fluid Laminar Flow Laminar flow is also referred to as streamline or viscous flow These ... TRANSFER, AND FLUID FLOW The information contained in this handbook is by no means all encompassing An attempt to present the entire subject of thermodynamics, heat transfer, and fluid flow would...
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boiling heat transfer and two-phase flow, second edition

boiling heat transfer and two-phase flow, second edition

Ngày tải lên : 02/04/2014, 15:22
... and flow boiling Pool boiling is boiling on a heating surface submerged in a pool of initially quiescent liquid Flow boiling is boiling in a flowing stream of fluid, where the heating surface ... CHAPTER INTRODUCTION Boiling heat transfer is defined as a mode of heat transfer that occurs with a change in phase from liquid to vapor There are two basic types of boiling: pool boiling and flow boiling ... Pool Boiling Crisis in Ordinary Liquids 81 2.4.3.2 2.4.3 Boiling Crisis with Liquid Metals 97 Film Boiling in a Pool 102 2.4.4.1 Film Boiling in Ordinary Liquids 103 2.4.4.2 2.4.4 Film Boiling in...
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fluid flow, heat transfer and boiling in micro-channels

fluid flow, heat transfer and boiling in micro-channels

Ngày tải lên : 02/04/2014, 15:51
... Drop and Heat Transfer in a Single-Phase Flow 33 2.3 Pressure Drop and Heat Transfer in a Single-Phase Flow Many correlations have been proposed in literature for the friction factor and heat transfer, ... applications in engineering and technology It contains six chapters related to the overall characteristics of the cooling systems: single-phase and gas–liquid flow, heat transfer and boiling in channels ... laminar, transient and turbulent single-phase flows; (2) heat transfer of liquids and gas flows; and (3) two-phase flows in adiabatic and heated micro-channels As indicated by Kandlikar and Grande...
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molecular dynamics simulation of heat transfer and phase change during

molecular dynamics simulation of heat transfer and phase change during

Ngày tải lên : 06/05/2014, 08:55
... Light-to -heat Absorption Mechanism in atomic Systems," International Journal of Heat and Mass Transfer, 41, pp 839-849 Häkkinen, H., and Landman, U., 1993, "Superheating, Melting, and Annealing of ... beam absorption Häkkinen and Landman [3] studied dynamics of superheating, melting, and annealing at the Cu surface induced by laser beam irradiation using the two-step heat transfer model developed ... CONCLUSION In this work, laser material interaction is studied using MD simulations Based on the results, the following conclusions are obtained First, during picosecond laser heating, the heat transfer...
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molecular dynamics simulation of heat transfer and phase change during

molecular dynamics simulation of heat transfer and phase change during

Ngày tải lên : 06/05/2014, 08:57
... Light-to -heat Absorption Mechanism in atomic Systems," International Journal of Heat and Mass Transfer, 41, pp 839-849 Häkkinen, H., and Landman, U., 1993, "Superheating, Melting, and Annealing of ... beam absorption Häkkinen and Landman [3] studied dynamics of superheating, melting, and annealing at the Cu surface induced by laser beam irradiation using the two-step heat transfer model developed ... CONCLUSION In this work, laser material interaction is studied using MD simulations Based on the results, the following conclusions are obtained First, during picosecond laser heating, the heat transfer...
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  1. Giáo án - Bài giảng
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molecular dynamics simulation of heat transfer and phase change during

molecular dynamics simulation of heat transfer and phase change during

Ngày tải lên : 06/05/2014, 08:59
... Light-to -heat Absorption Mechanism in atomic Systems," International Journal of Heat and Mass Transfer, 41, pp 839-849 Häkkinen, H., and Landman, U., 1993, "Superheating, Melting, and Annealing of ... beam absorption Häkkinen and Landman [3] studied dynamics of superheating, melting, and annealing at the Cu surface induced by laser beam irradiation using the two-step heat transfer model developed ... CONCLUSION In this work, laser material interaction is studied using MD simulations Based on the results, the following conclusions are obtained First, during picosecond laser heating, the heat transfer...
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  1. Giáo án - Bài giảng
  2. Vật lý
báo cáo hóa học:" Research Article Variable Viscosity on Magnetohydrodynamic Fluid Flow and Heat Transfer over an Unsteady Stretching Surface with Hall Effect" pot

báo cáo hóa học:" Research Article Variable Viscosity on Magnetohydrodynamic Fluid Flow and Heat Transfer over an Unsteady Stretching Surface with Hall Effect" pot

Ngày tải lên : 21/06/2014, 11:20
... 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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báo cáo khoa học: " Differential patterns of reactive oxygen species and antioxidative mechanisms during atrazine injury and sucrose-induced tolerance in Arabidopsis thaliana plantlets" ppsx

báo cáo khoa học: " Differential patterns of reactive oxygen species and antioxidative mechanisms during atrazine injury and sucrose-induced tolerance in Arabidopsis thaliana plantlets" ppsx

Ngày tải lên : 12/08/2014, 03:20
... family protein Thioredoxin family protein Thioredoxin family protein Thioredoxin family protein Thioredoxin family protein Thioredoxin H-type (TRX-H-3) (GIF1) Thioredoxin family protein No classification ... from combined effects of sucrose and atrazine This strongly suggested important interactions of sucrose and xenobiotic signalling or of sucrose and ROS signalling, thus resulting in induction ... shown to be involved in supplying reducing power to reductases detoxifying lipid hydroperoxides or repairing oxidized proteins [37] Thioredoxins could also act as regulators of scavenging mechanisms...
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Manipulation of turbulent flow for drag reduction and heat transfer enhancement 1

Manipulation of turbulent flow for drag reduction and heat transfer enhancement 1

Ngày tải lên : 10/09/2015, 09:10
... 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

Manipulation of turbulent flow for drag reduction and heat transfer enhancement 2

Ngày tải lên : 10/09/2015, 09:11
... 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 ... 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 ... alternating direction implicit (ADI) solver as the smoother Additionally, the computational domain is decomposed into several blocks and is parallelized by Message Passing Interface (MPI) Interface...
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Manipulation of turbulent flow for drag reduction and heat transfer enhancement 3

Manipulation of turbulent flow for drag reduction and heat transfer enhancement 3

Ngày tải lên : 10/09/2015, 09:11
... 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 ... = 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 ... spanwise and vertical velocities w and v tend towards 10−9 value during the development of the flow, and finally the flow re-laminarizes) The Reynolds number is not important for laminar flow in corrugated...
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Manipulation of turbulent flow for drag reduction and heat transfer enhancement 4

Manipulation of turbulent flow for drag reduction and heat transfer enhancement 4

Ngày tải lên : 10/09/2015, 09:11
... 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 ... 17.5%, and is unlikely 155 to increase further It is interesting to note that while the heat transfer characteristic is enhanced for Cases 2C.3 and 2C.4, there is a corresponding slight decrease in ... 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

Manipulation of turbulent flow for drag reduction and heat transfer enhancement 5

Ngày tải lên : 10/09/2015, 09:11
... 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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Manipulation of turbulent flow for drag reduction and heat transfer enhancement 6

Manipulation of turbulent flow for drag reduction and heat transfer enhancement 6

Ngày tải lên : 10/09/2015, 09:11
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An efficient and robust algorithm for incompressible flow and its application in heat transfer enhancement

An efficient and robust algorithm for incompressible flow and its application in heat transfer enhancement

Ngày tải lên : 11/09/2015, 16:02
... three-dimensional incompressible flow and heat transfer in plain fin -and- tube heat exchangers, the tube arrangement, tube row numbers and fin pitch were investigated in details They found that the average heat ... useful information about the flow and heat transfer characteristics in the plain fin -and- tube heat exchangers Tsai and Sheu (1998) also offered us some physical insights into the fluid structure in ... of fin pitch, tube pitch, fin height, tube thickness and tube ellipticity on heat transfer and pressure drop in the plain fin -and- tube heat exchanger, they found that heat transfer can be increased...
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