amp 949 kp turbulence model of two phase flow
Báo cáo hóa học: " Measurement of local two-phase flow parameters of nanofluids using conductivity double-sensor probe" pot
Ngày tải lên :
21/06/2014, 04:20
... 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...
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Báo cáo nghiên cứu khoa học: "NUMERICAL MODEL OF SINGLE PHASE TURBULENT FLOWS FOR CALCULATION OF PRESSURE DROP ALONG GAS PIPELINES " doc
Ngày tải lên :
22/07/2014, 10:21
... molarities of mixture p1: input pressure, kPa p2: output pressure, kPa d: diameter of pipeline, m γ g : gas density, kg/m3 (6) (7) • T: temperature of fluid flow, K • Zav: averaged coefficient of compressibility ... 0.0123 Real Pressure at 112971m of the end of pipeline is 7040 kPa The results with input data - sample in table 3.1 along the associated gas pipeline of flow equations of Weymouth, Panhandle A, Panhandle ... dL convection In case of vertical flow in the pipeline, the loss of energy is essential due to friction and changing of kinetic energy With assumption of isothermal stable flow and little change...
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Analysis and application of two phase spindle motor driven by sensorless BLDC mode
Ngày tải lên :
28/09/2015, 13:38
... 44 Figure 2.22 The phase back-EMF of two- phase spindle motor 45 Figure 2.23 The phase voltages of two- phase spindle motor 46 Figure 2.24 The phase currents of two- phase spindle motor ... the phase voltage of one phase 55 Figure 2.33 The phase voltages of two phases 56 Figure 2.34 The phase voltages and currents of one phase 57 Figure 2.35 The phase back-EMF of ... control of a two- phase BLDC spindle motor 19 2.3 Modeling of Two- phase Spindle Motor In order to study the performances of two- phase spindle motors, a mathematic model is built In general, a multi-phase...
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THE EFFECTS OF MICROCHANNEL GEOMETRY ON HEAT TRANFER BEHAVIORS FOR TWO PHASE FLOW BY NUMERICAL SIMULATION NGHIÊN cứu ẢNH HƯỞNG của HÌNH DÁNG HÌNH học KÊNH MICRO đến các đặc TÍNH TRUYỀN NHIỆT CHO DÒNG CHẢY HAI PHA BẰNG PHƯƠNG PHÁP mô PHỎNG
Ngày tải lên :
16/01/2016, 13:29
... 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, ...
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boiling heat transfer and two-phase flow, second edition
Ngày tải lên :
02/04/2014, 15:22
... Measurement of Liquid Film T hickness 166 CONTENTS ix 3.4 Modeling of Two- Phase Flow 68 3.4.1 Homogeneous Model/ Drift Flux Model 68 3.4.2 Separate -Phase Model (Two- Fluid Model) 70 3.4.3 Models for Flow ... 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...
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Two Phase Flow Phase Change and Numerical Modeling Part 1 pot
Ngày tải lên :
19/06/2014, 12:20
... 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 ... it 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, ... 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...
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Two Phase Flow Phase Change and Numerical Modeling Part 2 pdf
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...
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Two Phase Flow Phase Change and Numerical Modeling Part 3 doc
Ngày tải lên :
19/06/2014, 12:20
... Model, II Output : Q w = Q w, I + Q w, II Q Model = Q Model, I + Q Model, II End Fig Algorithm of the model 74 Two Phase Flow, Phase Change and Numerical Modeling Pri (MPa) Tro (°C) Tc (°C) mr ... 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 ... 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...
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Two Phase Flow Phase Change and Numerical Modeling Part 4 pot
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...
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Two Phase Flow Phase Change and Numerical Modeling Part 5 pptx
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...
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Two Phase Flow Phase Change and Numerical Modeling Part 6 pot
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 ... issue of permanent importance and has been tackled, in particular, in the framework of activities of the European Task Force on Integrated Tokamak Modelling (ITM, 2010) Modelling of Profile ... 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...
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Two Phase Flow Phase Change and Numerical Modeling Part 7 potx
Ngày tải lên :
19/06/2014, 12:20
... the highest levels of turbulence around the axis, while for high Re, the turbulence is more uniform The profiles shown in Fig 180 Two Phase Flow, Phase Change and Numerical Modeling Will-be-set-by-IN-TECH ... (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) Collective ... 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 Will-be-set-by-IN-TECH...
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Two Phase Flow Phase Change and Numerical Modeling Part 8 ppt
Ngày tải lên :
19/06/2014, 12:20
... principle of the approach is exposed Secondly, numerical 224 Two Phase Flow, Phase Change and Numerical Modeling Will-be-set-by-IN-TECH predictions of the model are provided in terms of damage ... 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, ... 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 Modeling Fig...
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Two Phase Flow Phase Change and Numerical Modeling Part 9 pot
Ngày tải lên :
19/06/2014, 12:20
... compactness 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 ... 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 ... 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,...
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Two Phase Flow Phase Change and Numerical Modeling Part 10 doc
Ngày tải lên :
19/06/2014, 12:20
... hydrodynamic model is a one-dimensional, transient, two- fluid model for flow of twophase steam-water mixture Simplification of assuming the same interfacial pressure for the two phases, with ... Instability Phenomena – Modelling and Experimental Investigation HEM Term Lockhart-Martinelli Jones Friedel ∆P [kPa] % of total ∆P [kPa] % of total ∆P [kPa] % of total ∆P [kPa] % of total ∆Pgrav 12.82 ... term and two- phase pressure drop term acquiring 180° out -of- phase fluctuations (Fig 7) What is interesting to notice, indeed, is that the 180° phase shift between single -phase and two- phase pressure...
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Two Phase Flow Phase Change and Numerical Modeling Part 11 pdf
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...
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Two Phase Flow Phase Change and Numerical Modeling Part 12 pot
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 ... 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 Modeling ... in the lower value of CHF Kandlikar (2001) proposed a new CHF 330 Two Phase Flow, Phase Change and Numerical Modeling model considering the contact angle and the orientation of a heating surface...
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Two Phase Flow Phase Change and Numerical Modeling Part 13 docx
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 ... vertical parts The variant of the two- phase closed thermosyphon loop consists of two heaters and two coolers connected by channels A schematic diagram of a one-dimensional model of the thermosyphon ... 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...
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Two Phase Flow Phase Change and Numerical Modeling Part 14 pdf
Ngày tải lên :
19/06/2014, 12:20
... 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 Numerical Modeling ... under 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 ... travel a distance L into 400 12 Two Phase Flow, Phase Change and Numerical Modeling Will-be-set-by-IN-TECH Model Law φ 1− φ k = kp + k ΦQ hf kp , φ Φhf Q Comments Series model No assumption on particles...
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Two Phase Flow Phase Change and Numerical Modeling Part 15 doc
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 ... 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 Numerical Modeling ... investigation of turbulent convective heat transfer and pressure loss of alumina/water and zirconia/water 434 Two Phase Flow, Phase Change and Numerical Modeling nanoparticle colloids (nanofluids)...
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