two phase flow through porous media

... 3.5.5 Steady Two- Phase Flow Pressure Drop in Transient Flow 209 Pressure Drop in Flow Restriction 21 3.5.5.1 21 3.5.5.2 3.6 Steady-State, Two- Phase- Flow Pressure Drop Transient Two- Phase- Flow Pressure ... Stratified Flow (Horizontal Pipes) 82 3.4.8 Models for Transient Two- Phase Flow 83 3.4.8.1 85 3.4.8.2 Transient Slug Flow 86 3.4.8.3 3.5 Transient Two- Phase Flow in Horizontal Pipes Transient Two- Phase ... T WO -PHASE FLOW 119 3.1 Introduction 119 3.2 Flow Patterns in Adiabatic and Diabatic Flows 120 2.5 3.2.1 Flow Patterns in Adiabatic Flow 120 3.2.2 Flow Pattern Transitions in Adiabatic Flow 128...

Ngày tải lên: 02/04/2014, 15:22

... electromagnetic radiation and convection The Two Phase Flow, Phase Change and Numerical Modeling proposed method solves simultaneously the heat equation for the three phases (solid, liquid and vapor), computing ... state of the material in D pattern: (7) Two Phase Flow, Phase Change and Numerical Modeling T ( M, t o ) = To (M) , M ∈ D (8) In time, successions the phases the object suffers while irradiate ... between the boundaries C l (t) and C v (t) The power flow on the processed surface corresponding to the liquid state is given by: Two Phase Flow, Phase Change and Numerical Modeling r A ⋅ P −...

Ngày tải lên: 19/06/2014, 12:20

... Internal heat transfer of phase changing refrigerant is high and varies 28 Two Phase Flow, Phase Change and Numerical Modeling with flow regimes occurring along the tube passes Flow on the secondary ... heat transfer area (14) 36 Two Phase Flow, Phase Change and Numerical Modeling Amin: minimum free flow area through which air passes across the coil β: ratio of free -flow to frontal area The air ... return bends: ou = ( Pr )in − ( ΔPr ) l (2a) 34 Two Phase Flow, Phase Change and Numerical Modeling (P ) r ou = ( Pr )in − ( ΔPr )b (2b) For single phase, subcooled liquid and superheated vapour,...

Ngày tải lên: 19/06/2014, 12:20

... mainly due to the effect of water flow rate, while the shell-side heat transfer coefficient is 76 Two Phase Flow, Phase Change and Numerical Modeling influenced by the flow characteristic of refrigerant ... of heat exchangers are many, including flow arrangement, tube size, geometric configuration, and inlet/outlet conditions on the water 62 Two Phase Flow, Phase Change and Numerical Modeling and ... copper tubes The evaporator is a cross flow air-to-refrigerant heat exchanger of finned-tube type The throttling device is a thermostatic 64 Two Phase Flow, Phase Change and Numerical Modeling expansion...

Ngày tải lên: 19/06/2014, 12:20

... The results showed different type of flow patterns, as Couette-Taylor flow or single and double vortex flow, can be created in a wide 92 Two Phase Flow, Phase Change and Numerical Modeling range ... Couette flow and occurrence of secondry flow (Taylor vortex flow) in a annular domin of two coaxial rotating cylinders is a classical problem in fluid mechanics Because this type of gas flow can ... Fig Flow filed of single-vortex Flow VΘ /(2 R T0 )1/2 = 0.81 VΘ /(2 R T0 )1/2 =-0.237 Fig Flow filed of double-vortex Flow VΘ /(2 R T0 )1/2 = 0.81 VΘ /(2 R T0 )1/2 =-0.27 Figure shows the flow...

Ngày tải lên: 19/06/2014, 12:20

... 0.01 0.02 0.03 0.04 0.05 0.06 0.07 0.08 0.09 0.1 z (m) Fig 19 The vapor phase velocity distribution 116 Two Phase Flow, Phase Change and Numerical Modeling The variations of the wall temperature ... M (2002) Wickless Network Heat Pipes for High Heat Flux Spreading Applications, International Journal of Heat and Mass Transfer, Vol.45, pp 2539-2547 118 Two Phase Flow, Phase Change and Numerical ... sizes of 220x1500 mm x mm two chemical analyses for steel were examined depending on the selected carbon concentrations, as presented on Table 130 Two Phase Flow, Phase Change and Numerical...

Ngày tải lên: 19/06/2014, 12:20

... 140 Two Phase Flow, Phase Change and Numerical Modeling Fig 13 presents the temperature distribution till solidus temperature inside a slab at two different positions in ... in the graph are in ºC) 142 Two Phase Flow, Phase Change and Numerical Modeling Fig 16 presents the temperature distribution till solidus temperature inside a slab at two different positions in ... co-ordinate systems 150 Two Phase Flow, Phase Change and Numerical Modeling 1.1 Classical and neoclassical transport Plasmas in magnetic fusion devices of the tokamak type are media with complex non-trivial...

Ngày tải lên: 19/06/2014, 12:20

... 170 Two Phase Flow, Phase Change and Numerical Modeling Diamond, P.H et al (1994) Self-regulating shear flow turbulence: a paradigm for the L to H transition, ... impingement takes place against granular media and cannot be extrapolated from excavation related problems to heat transfer ones, and vice versa 190 18 Two Phase Flow, Phase Change and Numerical Modeling ... non-swirling jet against a solid wall Their results are later validated by Particle Image 174 Two Phase Flow, Phase Change and Numerical Modeling Will-be-set-by-IN-TECH Velocimetry (PIV) experimental...

Ngày tải lên: 19/06/2014, 12:20

... Swirl and Applications for Enhanced Heat Transfer and Flow Mixing Fig 12 Impact of Re and θ on Azimuthal Velocity Field 203 204 Two Phase Flow, Phase Change and Numerical Modeling The single-jet ... 214 Two Phase Flow, Phase Change and Numerical Modeling References Aboelkassem, Y., Vatistas, G H., and Esmail, N (2005) Viscous Dissipation of Rankine Vortex Profile in Zero Meridional Flow, ... 200 Two Phase Flow, Phase Change and Numerical Modeling A consequence of the azimuthal rotation is that swirling...

Ngày tải lên: 19/06/2014, 12:20

... necessary for valence electrons to break through the 7.8 eV band gap (Carr et al., 2003) whereas at 1ω seven photons at 1.18 eV would 234 Two Phase Flow, Phase Change and Numerical Modeling Will-be-set-by-IN-TECH ... pattern nearly 236 20 Two Phase Flow, Phase Change and Numerical Modeling Will-be-set-by-IN-TECH remains unchanged and the slopes s as well Also these observations not dismiss that two populations ... during the picosecond time period 246 Two Phase Flow, Phase Change and Numerical Modeling Fig The temporal evolution of electron and phonon temperature fields in two layer Au/Ag film assembly (A)...

Ngày tải lên: 19/06/2014, 12:20

... labs) 272 Two Phase Flow, Phase Change and Numerical Modeling All these delayed effects combine in single -phase pressure drop term and two- phase pressure drop term acquiring 180° out-of -phase fluctuations ... Two Phase Spray Cooling 20-40 1200 (Pais et al., 1992) Two Phase Jet Impingement 28 1820 (Overholt et al., 2005) Two phase Two Phase Two Phase Table Cooling Techniques and Respective Heat Fluxes ... two- fluid model for flow of twophase steam-water mixture Simplification of assuming the same interfacial pressure for the two phases, with equal phasic pressures as well, is considered 264 Two...

Ngày tải lên: 19/06/2014, 12:20

... will be covered by the slip flow phenomenon and the convective heat transfer related to the slip flow on the hydrophobic surface In the two- phase flow, various two- phase heat transfers including ... single phase and two- phase heat transfer will be reviewed In the single phase, there is no TCL However, there is an apparent slip flow on a hydrophobic surface Most studies related to a slip flow ... Meeting and Exhibit, Reno, Nevada, pp 10838–10843 (2004) 308 Two Phase Flow, Phase Change and Numerical Modeling Lin, L., Ponnappan, R., Two- phase high capacity spray cooling loop - Nozzle orientation...

Ngày tải lên: 19/06/2014, 12:20

... 320 Two Phase Flow, Phase Change and Numerical Modeling 3.2 Two- phase heat transfer 3.2.1 Evaporation Evaporation is one of major two- phase heat transfer mechanisms ... We categorized a single phase and two- phase heat transfers Moreover, evaporation, condensation, pool boiling, and flow boiling are specifically discussed for the two- phase heat transfer From ... Micro-Scale Two- Phase Flow Naoki Shikazono and Youngbae Han The University of Tokyo Japan Introduction Liquid film formed between confined vapor bubble and tube wall in micro-scale two phase flow plays...

Ngày tải lên: 19/06/2014, 12:20

... Fig Mass flow rate for laminar flow at the steady state versus modified Rayleigh number at different G/H ratios (HHVCHV) 372 Two Phase Flow, Phase Change and Numerical Modeling MASS FLOW RATE ... Transactions of the ASME, 118, 132-139 Qu, W & Mudawar, I (2004) Flow boiling heat transfer in two- phase micro-channel heat sink-II Annular two- phase flow model, International Journal of Heat Mass Transfer, ... terms of single- and two- phase flow in the thermosyphon loop with conventional tubes and minichannels In order to analyse the numerical results of simulation for the two- phase flow and heat transfer...

Ngày tải lên: 19/06/2014, 12:20

... pressure drop of two- phase flow in adiabatic region (Zhang & Webb, 2001), the Tran correlation (Eq 23) for the friction pressure drop of two- phase flow in 384 Two Phase Flow, Phase Change and ... condition of single- and two phase flows The obtained results show that the one-dimensional two- phase separate flow model can be used to describe heat transfer and fluid flow in the thermosyphon ... 2001) for the friction pressure drop of two- phase flow in adiabatic region, the Tran correlation (Tran et al., 2000) for the friction pressure drop of two- phase flow in diabatic region and the Mikielewicz...

Ngày tải lên: 19/06/2014, 12:20

... flowing through a cylindrical minichannel Effects of Reynolds number and concentration of nanoparticles on the heat transfer performance are also reported and discussed 422 Two Phase Flow, Phase ... non-spherical particle shapes by Hamilton and Crosser [2] predicts that thermal conductivity of two 436 Two Phase Flow, Phase Change and Numerical Modeling component heterogeneous mixtures is a function of ... that dissipate more energy within the liquid thereby increasing its temperature 414 26 Two Phase Flow, Phase Change and Numerical Modeling Will-be-set-by-IN-TECH φ φ0 /8 φ0 /4 φ0 /2 φ0 (a) Evolution...

Ngày tải lên: 19/06/2014, 12:20

... nanostructures, considering that the heat flow paths take place on continuous but non-differentiable curves, i.e an fractals, is established 452 Two Phase Flow, Phase Change and Numerical Modeling ... conductivity (35) 460 Two Phase Flow, Phase Change and Numerical Modeling Let us apply the previous formalism for the heat transfer in nanofluids, assuming the following: (i) there are two different ... the irrotational motions: ˆ ∇×V = (51) 464 Two Phase Flow, Phase Change and Numerical Modeling so that the complex speed field (6) can be expressed through the gradient of a complex scalar function...

Ngày tải lên: 19/06/2014, 12:20

... and chemical composition, • Flow in porous media, • Heat exchangers, blower, the radiators and their efficiency, • Two- phase and multiphase flows • Free surface flows with complex surface shapes ... Methanol Fuel Cell Fig Flow contour in cross strip Fig Flow of parallel in inlet 491 492 Two Phase Flow, Phase Change and Numerical Modeling Fig Flow of cross strip in outlet 7.3 Assumptions of heat ... dynamics 488 Two Phase Flow, Phase Change and Numerical Modeling • Computational Fluid Dynamics Computational fluid dynamics or CFD analysis of expression systems include fluid flow, heat transfer...

Ngày tải lên: 19/06/2014, 12:20

... flux Ricerche mat., Vol 56, pp 229-239 520 Two Phase Flow, Phase Change and Numerical Modeling Straughan B (2008) Stability and wave motion in porous media Springer-Verlag, New York Straughan, ... granular media It is noted that Wang (2001) also derived a general expression for the heat flux vector for a fluid where heat convection is also important; he assumed that 508 Two Phase Flow, Phase ... Stefan-Boltzmann correlation is used at that surface (Fuchs 1996, p.331) Fig Flow down an inclined plane 510 Two Phase Flow, Phase Change and Numerical Modeling For the problem under consideration,...

Ngày tải lên: 19/06/2014, 12:20

... enthalpy flow at the inlet is also an important factor with respect to the thermal response of an ice storage tank The dimensionless enthalpy flow rate is defined as follows: 546 Two Phase Flow, Phase ... number and inlet enthalpy flow rate 550 Two Phase Flow, Phase Change and Numerical Modeling Fig Melting process for large Archimedes number and moderate inlet enthalpy flow rate Fig 10 Melting ... was released 552 Two Phase Flow, Phase Change and Numerical Modeling The flow rates of the glycol solution and the input water for melting were measured by electromagnetic flow meters Temperature...

Ngày tải lên: 19/06/2014, 12:20