and heat transfer between particles and liquid

... of industrial processes and devices This book includes 18 advanced and revised contributions, and it covers mainly (1) heat convection, (2) heat conduction, and (3) heat transfer analysis The first ... Power and V LaRocca Part 3 Heat Transfer Analysis 297 Chapter 14 Heat Transfer Analysis of Reinforced Concrete Beams Reinforced with GFRP Bars 299 Rami A Hawileh Chapter 15 Modelling of Heat Transfer ... The third section includes heat transfer analysis of reinforced concrete beam, modeling of heat transfer and phase transformations, boundary conditions-surface heat flux and temperature, simulation

Ngày tải lên: 19/06/2014, 10:20

... 2, 3, Gr = 105, 104, and 105 on Heater 1 and 2 Figure (15) depicts the effect of the Reynolds number on heat transfer for Gr = 103, 104, and 105, Re = 1, 10, 100, and 1000, and finally, d = 1, ... θ on Heater 1 and 2 for Re = 100 and 1000 and d = 1, 2, and 3 The distance between the modules does not affect the temperature on Heater 1 whereas this effect can be distinctively seen on Heater ... = 10 and 100, and γ = 0°, 45°and 90° Figure (19) depicts the velocity vectors for Re = 10 and 100 and Gr = 105 for γ = 0°, 45°, and 90° It can be noted that for Re = 10 and γ = 0°, 45°, and 90°,

Ngày tải lên: 19/06/2014, 10:20

... comparable magnitude and the resulting heat transfer process is categorized as mixed convection. Mixed convection flow and heat transfer also occur frequently in other engineering and natural situations. ... the enclosure rotates to 180º, the heat transfer mechanism switches to the diffusion because the top wall is heated. 1.1.2 LID driven enclosure Flow and heat transfer analysis in lid-driven cavities ... analysis to understand the physics of the resulting flow and heat transfer process. 1.3 Motivation behind the selection of problem Two dimensional steady, mixed convection heat transfers in a

Ngày tải lên: 19/06/2014, 10:20

... Convection heat transfer in electronic equipment cooling, J.Heat Transfer 110 (1988) 1097–1111 [5] C K Cha and Y Jaluria, Recirculating mixed convection flow for energy extraction, Int j Heat Mass Transfer ... discrete heat sources, Numer Heat Transfer, Part A 38 (2000) 627–652 [27] O Aydin, W.J Yang, Mixed convection in cavities with a locally heated lower wall and moving sidewalls, Numer Heat Transfer, ... Viskanta, Laminar flow and heat transfer in Rayleigh–Benard convection with shear, Phys Fluids A 4 (1992) 2131–2140 [20] A.A.Mohammad, R.Viskanta,Flow structures and heat transfer in a lid-driven

Ngày tải lên: 19/06/2014, 10:20

... several thermo-fluid problems (Kosec and Šarler, 2008a, Kosec and Šarler, 2008b, Kosec and Šarler, 2008c, Kosec and Šarler, 2008d, Kosec and Šarler, 2009) and it shows several advantages like ... al., 2001, Ni and Beckermann, 1991, Prasad and Kulacky, 1984, Prax, et al., 1996, Raghavan and Ozkan, 1994, Šarler, et al., 2000, Šarler, et al., 2004a, Šarler, et al., 2004b) and therefore ... defined time and spatial discretization schemes, the general transport equation under the model assumptions can be written as where θ0,1, D t,Δ andS0stand for the field value at current and next

Ngày tải lên: 19/06/2014, 10:20

... Model of Heat and Mass Transfer During Convective Drying of Porous Materials. Heat Transfer – Asian Research, Volume 28 № 5, pp. 337-351 0 Non-Linear Radiative-Conductive Heat Transfer in ... −1 and t 0 = -2°C Convection and Conduction Heat Transfer 174 9. Conclusion This paper describes the creation and solution of non-linear mathematical models for the transient heat ... Perre, P. (1988). Detailed Study of a Model of Heat and Mass Transfer During Convective Drying of Porous Media, International Journal of Heat and Mass Transfer , Volume 31, № 5, pp. 297-310 Chudinov,

Ngày tải lên: 19/06/2014, 10:20

... cross-sectional square and it is perpendicular to fibres direction Perfect contact between the matrix and the cell is assumed, heat transfer does not depend on time, and only conductive transfer is considered ... problem one can take under consideration three types of heat transfer heat transfer coefficient, – thermal conductivity coefficient, nx and ny – components of normal vector to boundary In developing ... boundaries equals zero Thermal continuity and heat flux continuity conditions are applied on the boundary of each fibre 2.3 Relation between geometry and conductivity As we have already mentioned,

Ngày tải lên: 19/06/2014, 10:20

... temperature; and second, that there is negligible heat transfer between the thermally significant arteriole-venule pairs and surrounding tissue 3.4 Thermally significant blood vessel model As CH and ... temperatures j between nodes For example, j i j ij q d − = where d ij is the distance between the center of the cells i and j The semi-discrete form of the transient bioheat heat transfer equation ... bladder, and lung, and for melanoma Whether the combination of radiation and heat is given in a simultaneous or sequential schedule, the thermal enhancement will be dependent on the heating time and

Ngày tải lên: 19/06/2014, 10:20

... Bars 301 and atoms On the other hand, convection transfers the heat from the source to the RC beam via cycles of heating and cooling of the surrounding fluids Radiation is the transfer of heat by ... Nonlinear Heat Conduction Problems on Unstructured Datasets Trang 614 Heat Transfer Book 2gradual drop in temperature between T max = −1.5 o C and T s = −4.5 o C, occurring between t = 18000 and t ... observations and conclusion were drawn based on the results of the developed model 2 Heat transfer equations Heat transfers via the following three methods: Conduction, Convection, and Radiation

Ngày tải lên: 19/06/2014, 10:20

... to longer interactiontimes between the heat source (laser radiation) and the material, allowing more time for heat Trang 15(a) (b)Fig 14 (a) Young’s modulus (GPA) and (b) Vickers hardness (HV) ... Fan, 1993; Lee et al., 1991) The Young’s moduli ofα, β and α are 117, 82 and 114 GPa respectively and the Vickers hardnesses are 320, 140 and 350 HV Trang 94 Results4.1 Experimental confirmation ... of the substrate and the wall with a detail of the wall mesh The calculated phase distribution is shown in Figures 6.b and 7 The highest volume fractions ofα and β phases (0.03 and 0.07 respectively)

Ngày tải lên: 19/06/2014, 10:20

... description and solution of heat transfer and phase change We analyze the problem of heat transfer in a 1D body during the melting and freezing process with an external heat flux or heat convection, ... flows through the layer and transfers heat into the pipes The related numerical solution was realized in two parts First, we solved the turbulence model and obtained the heat transfer film coefficients ... the specific heat, Δhm the enthalpy, Q the heat, and Tm , Te the temperature according to Figure 3 If heat is supplied to the material, there occurs the transformation from the liquid into the

Ngày tải lên: 19/06/2014, 10:20

... flow and the heat transfer in concentric and eccentric annuli Furthermore, this work aims to study the effects of rotation on the local and the overall heat transfer coefficients in concentric and ... 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 ... was carried out by Kuehn and Goldstein (1980), in which the effects of the Prandtl number and the radius ratio on heat transfer coefficient were investigated Farouk and Guceri (1982) applied...

Ngày tải lên: 27/11/2015, 11:12

... -6.4648 4.4 Rate of heat transfer The rate of heat transfer at the wall i.e the heat flux in terms of Nusselt number Nu for different values of α and Kp are entered in Table The heat flux at the ... Mass transfer effects on MHD flow and heat transfer past a vertical porous plate through a porous medium under oscillatory suction and heat source Int J Heat Mass Transfer 2009, 52, 5962-5969 S ... A1 B − A2 B − B − m )cos πz , (50) τz = − εα A1 A2 sin π z π 3.2 Rate of heat transfer The rate of heat transfer i.e heat flux at the wall in terms of Nusselt number (Nu) is given by ⎛ dθ ⎞ ⎛...

Ngày tải lên: 05/09/2013, 14:58

... the heat transfer between air and absorber plate get reduced The heat transfer between absorber plate and air can be enhanced either by increasing the heat transfer surface area using extended and ... K.R, Gandhi B.K, Saini J.S Heat transfer and friction characteristics of solar air heater duct having integral inclined discrete ribs on absorber plate International Journal of Heat and Mass Transfer ... flow and heat transfer in a rib grit roughened surface solar air heater using CFD Solar Energy 2010, 84, 409-417 [22] Bopache S.B., Tandale M.S Experimental investigations on heat transfer and...

Ngày tải lên: 05/09/2013, 15:28

... Performance of Solar air heater Proceedings of XVII National and VI ISHME/ASME Heat and Mass Transfer Conference, IGCAR, Kalpakkam India 2004; Jan 05-07 [2] Han J C Heat transfer and friction in channels ... Journal of Heat Transfer, 106, 774-781, 1984 [3] Han J.C., Glicksman LR and Rosenow WM Investigation of heat transfer and friction for ribroughened surfaces, Int Journal of Heat & Mass Transfer ... on heat transfer and flow behavior in a rectangular rib roughened passage” International Journal of Heat and mass transfer; 123: 675-681, 2001 [6] Lau S.C., McMillin R.D and Han J.C Turbulent Heat...

Ngày tải lên: 05/09/2013, 16:10

... J Conduction Heat Transfer, Addison-Wesley Pub Co., California Holman, J P., Heat Transfer, 3rd Edition, McGraw-Hill, New York Knudsen, J G and Katz, D L., Fluid Dynamics and Heat Transfer, McGraw-Hill, ... simply as the heat transferred per unit mass q Q m (1-16) where: q = heat transferred per unit mass (Btu/lbm) Q = heat transferred (Btu) m = mass (lbm) Example: Determine the heat transferred per ... of latent heat The first is the latent heat of fusion This is the amount of heat added or removed to change phase between solid and liquid The second type of latent heat is the latent heat of vaporization...

Ngày tải lên: 22/10/2013, 10:15

... connected to the heat transfer site Rev Page HT-02 CONDUCTION HEAT TRANSFER Heat Transfer CONDUCTION HEAT TRANSFER Conduction heat transfer is the transfer of thermal energy by interactions between adjacent ... CONVECTION HEAT TRANSFER Heat Transfer CONVECTION HEAT TRANSFER Heat transfer by the motion and mixing of the molecules of a liquid or gas is called convection EO 1.9 Given the formula for heat transfer ... temperature difference and the resistance to heat transfer The resistance to heat transfer is dependent upon the nature and dimensions of the heat transfer medium All heat transfer problems involve...

Ngày tải lên: 17/03/2014, 15:00

... VA 22161 Order No DE92019791 THERMODYNAMICS, HEAT TRANSFER, AND FLUID FLOW ABSTRACT The Thermodynamics, Heat Transfer, and Fluid Flow Fundamentals Handbook was developed to assist nuclear facility ... Idaho, Inc Rev HT THERMODYNAMICS, HEAT TRANSFER, AND FLUID FLOW OVERVIEW The Department of Energy Fundamentals Handbook entitled Thermodynamics, Heat Transfer, and Fluid Flow was prepared as an ... present the entire subject of thermodynamics, heat transfer, and fluid flow would be impractical However, the Thermodynamics, Heat Transfer, and Fluid Flow handbook does present enough information...

Ngày tải lên: 17/03/2014, 15:00

... Introduction and definitions 1.1 Modes of heat transfer 1.2 Definitions 1.2.1 Heat (transfer) rate and heat flux 1.2.2 Heat transfer coefficients and overall heat transfer ... the heat transfer coefficient α, the heat transfer surface area A and the temperature difference Δϑ The heat transfer coefficient defines the heat rate Q transferred per unit transfer area A and ... total transferred heat is of interest To determine the overall heat transfer rate, the local heat flux density must be integrated over the total heat transfer area The total transferred heat rate...

Ngày tải lên: 24/03/2014, 01:20

... immense research effort has been expended in exploring and understanding the convective heat and mass transfer processes between a fluid and submerged objects of various shapes Among several geometries ... boundary-layer heat transfer research and also identifies the potential difficulties and future needs In addition, this work provides new material on convective heat and mass transfer, as well ... Free and mixed convection boundary-layer flow past inclined and horizontal plates Double-diffusive convection Convective flow in buoyant plumes and jets Conjugate heat transfer over vertical and...

Ngày tải lên: 01/04/2014, 10:51