nunziato equations of compressible two phase flow

... Page of Table Test cases for the local two- phase flow measurement Case number Air flow rate (m3/s) Liquid flow rate (m3/s) Flow regime Case number Liquid flow rate (m3/s) Air flow rate (m3/s) Flow ... double-sensor two- phase void meter was used as the phase identifier for the two- phase Figure An overview of the experimental test loop Page of mixture The conductivity double-sensor two- phase void ... characteristics of the internal two- phase flow structure of the nanofluid were specified In addition, the heat transfer enhancement of nanofluid can be resulted from the increase of the interfacial...

Ngày tải lên: 21/06/2014, 04:20

... case of inputs: heat power of 176W, ambient temperature of =30 °C, source temperature of 30 °C, mass flow rate of 0.3 g/s, cross-section area of 0.25 mm2, substrate thickness of 900 µm, depth of ... finding the best performanced cross-section of microchannels for two phase flow is the important task to determine the optimal design of two phase flow microchannel heat exchangers In this study, ... comparision of heat flux for all of cases 635 Kỷ yếu hội nghị khoa học công nghệ toàn quốc khí - Lần thứ IV In addition, to determine the best performanced cross-section of microchannels for two phase flow, ...

Ngày tải lên: 16/01/2016, 13:29

... TRANSFER AND TWO- PHASE FLOW described in terms of two- phase boundary-layer flow The macroscopic effect of a two- phase flow on the frictional pressure drop still relies on empirical correlations FLOW ... 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 ... HYDRODYNAMICS OF 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...

Ngày tải lên: 02/04/2014, 15:22

... condenser, two phase flow, nanofluids, and on phase change are significant issues in a design of wide range of industrial processes and devices This book introduces advanced processes and modeling of ... covers mainly (1) numerical modeling of heat transfer, (2) two phase flow, (3) nanofluids, and (4) phase change The first section introduces numerical modeling of heat transfer on laser beam, evaporator ... readers of this book will appreciate the current issues of modeling on laser beam, evaporator coils, rarefied gas, flat miniature heat pipe, two phase flow, nanofluids, complex fluids, and on phase...

Ngày tải lên: 19/06/2014, 12:20

... number of passes 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 ... tracking of relevant operational parameters Differential lengths of tubing were used where single phase flow prevailed and differential variations of quality were employed in zones of two- phase flow ... or absence of a junction between two tubes; the coordinates I and K indicate the direction of flow: incoming and destination, respectively The values of J(I,K) are: 38 Two Phase Flow, Phase Change...

Ngày tải lên: 19/06/2014, 12:20

... 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 ... T ri Tr Two Tc Tw Tro Twi L Fig Temperature variations of two steams in the condenser The total heat transfer rate of the condenser is the sum of individual heat transfer rate of the two sections ... exit of the coil in case A can be reached at the end of the eighth row in 56 Two Phase Flow, Phase Change and Numerical Modeling case B This means that the coil volume as well as the mass of material...

Ngày tải lên: 19/06/2014, 12:20

... 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 of speed of rotation of inner ... teperature of oulet cylinder are 300 and 350 K Fig Flow filed of single-vortex Flow when teperature of the inlet cylinder and the teperature of oulet cylinder are 350 and 300 K 87 88 Two Phase Flow, Phase ... 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...

Ngày tải lên: 19/06/2014, 12:20

... shape of the microchannel that don't generate a very important vapor 114 Two Phase Flow, Phase Change and Numerical Modeling pressure drop For the liquid, the velocity increase is important near of ... 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 along the microchannel ... Record of the 2004 IEEE, pp 2296-2302, Vol.4, October 3-7, 2004 120 Two Phase Flow, Phase Change and Numerical Modeling Xiaowu, W., Yong, T & Ping, C (2009) Investigation into Performance of a...

Ngày tải lên: 19/06/2014, 12:20

... 10 −5 Amix 158 Two Phase Flow, Phase Change and Numerical Modeling Examples of applications 3.1 Temperature profile with the edge transport barrier The most prominent example of TB in fusion ... soft reduction has been put into practice by some slab casting manufacturers worldwide In this study, 146 Two Phase Flow, Phase Change and Numerical Modeling some ideas for applying static soft ... Brimacombe, J.K (1986) Mathematical modeling of unbending of continuously cast steel slabs Ironmaking and Steelmaking Vol 13, No 3, pp 138-153 148 Two Phase Flow, Phase Change and Numerical Modeling Won,...

Ngày tải lên: 19/06/2014, 12:20

... turbulent numerical simulations of the impingement of a non-swirling jet against a solid wall Their results are later validated by Particle Image 174 Two Phase Flow, Phase Change and Numerical Modeling ... al (1197) A gyro-Landau-fluid transport model, Phys of Plasmas, Vol.4, No.7 (July 1997), pp 2482-2496, ISSN 1070-664X 172 Two Phase Flow, Phase Change and Numerical Modeling Weiland, J (2000) ... 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,...

Ngày tải lên: 19/06/2014, 12:20

... 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 computation domain consisted of a right ... allow the systematic tracing of velocity and temperature profiles of the three selected jets, without obstruction from other adjacent, cooler jets 210 Two Phase Flow, Phase Change and Numerical ... 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, ...

Ngày tải lên: 19/06/2014, 12:20

... strength) 252 Two Phase Flow, Phase Change and Numerical Modeling Fig.10 shows surface electron and phonon temperatures of the two layer Au/Al assembly at center of laser spot as a function of delay ... of the system) 258 Two Phase Flow, Phase Change and Numerical Modeling First, modelling effort based on the development of an analytical dynamic model – via integration of the 1D governing equations ... transferred to localized 244 Two Phase Flow, Phase Change and Numerical Modeling phonon due to the increase of electron-phonon coupling strength as a result of the rise of electron temperature Meanwhile,...

Ngày tải lên: 19/06/2014, 12:20

... 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 ... Mathematical modelling Modelling equations are derived by the continuity of mass and energy for a single -phase fluid and a two- phase fluid, respectively Single -phase flow equations read: ∂ρ ∂G + =0 ... propagation of an enthalpy wave in the single -phase region The propagation of this perturbation in the two- phase zone (via quality and void fraction perturbations) causes further lags in terms of two- phase...

Ngày tải lên: 19/06/2014, 12:20

... contribution of bubble boiling varies with the superheat temperature of the heated surface 298 Two Phase Flow, Phase Change and Numerical Modeling In the case of low superheat condition, the majority of ... of vapor phase columns on the heating surface, boiling heat transfer is deteriorated before meeting a 312 Two Phase Flow, Phase Change and Numerical Modeling melting temperature of material of ... and make full use of latent heat to cool the heat source 292 Two Phase Flow, Phase Change and Numerical Modeling Fig Schematic of nucleation sites on heated surface under effect of droplets impingement...

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 ... (2010) studied CHF of the subcooled flow boiling of Alumina nanofluids in a 510 μm single microchannel Their results show 51% enhancement of CHF under 334 Two Phase Flow, Phase Change and Numerical ... characteristics of the liquid film in micro-scale two phase flows are not fully understood, and thus designing two- phase flow systems still remains as a difficult task It is reported that the thickness of...

Ngày tải lên: 19/06/2014, 12:20

... 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 ... analyzed in 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 ... correlation for the friction pressure drop of two- phase flow in adiabatic region (Zhang & Webb, 2001), the Tran correlation for the friction pressure drop of two- phase flow in diabatic region (Tran et...

Ngày tải lên: 19/06/2014, 12:20

... friction 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 ... vertical side., Archives of Thermodynamics, Vol 31(2010), No 4, pp 51-59 386 Two Phase Flow, Phase Change and Numerical Modeling Bieliński, H.; Mikielewicz, J (2010) A Two Phase Thermosyphon Loop ... unusual enhancement of thermal conductivity 402 14 Two Phase Flow, Phase Change and Numerical Modeling Will-be-set-by-IN-TECH By creating paths of low thermal resistance, clustering of particles into...

Ngày tải lên: 19/06/2014, 12:20

... conductivity of two 436 Two Phase Flow, Phase Change and Numerical Modeling component heterogeneous mixtures is a function of the conductivity of pure materials, the composition of the mixture ... (b) Fig Axial profiles of local heat transfer coefficient of DIW for various volumetric loadings of TiO2 nanoparticles at (a) Re = 1700 and (b) Re = 1700 430 Two Phase Flow, Phase Change and ... magnitude of potential benefits of using nanofluids for heat transfer applications because of diversity and complexity of the nanofluid systems By the type of nanoparticle material the nanofluid...

Ngày tải lên: 19/06/2014, 12:20

... area 444 Two Phase Flow, Phase Change and Numerical Modeling Efficient nanofluid by design In light of all the mentioned nanofluid property trends, development of a heat transfer nanofluid requires ... Yazicioglu, Enhanced thermal conductivity of nanofluids: a state -of- the-art review Microfluidics and Nanofluidics, 2010 8(2): p 145-170 448 Two Phase Flow, Phase Change and Numerical Modeling [28] ... variation of the speed field with the fractal coordinates (b) 466 Two Phase Flow, Phase Change and Numerical Modeling The presence of the interface couples together the two previous Equations...

Ngày tải lên: 19/06/2014, 12:20

... 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 transfer analysis In real estate, total area of MEA surface does ... behavior of a complex fluid, numerical studies of a coaxial heat exchanger using nanofluids are presented Then single -phase model have been used for prediction of flow field and calculation of heat ... Capability of program FLUENT software can be able to simulation and modeling the following: • Flow in complex geometry of two dimensional and three dimensional with the possible resolution of network...

Ngày tải lên: 19/06/2014, 12:20