some examples of fluid flow and heat transfer problems

... collectors, heat pipes, nuclear reactors, and crude oil extraction, the characteristics of fluid flow and heat transfer at the interface region of mixed system with a porous medium and an adjacent fluid ... MODEL OF FLUID FLOW AND HEAT TRANSFER WITH POROUS MEDIA XIONG JIE B Eng HUST A THESIS SUBMITTED FOR THE DEGREE OF MASTER OF ENGINEERING DEPARTMENT OF MECHANICAL ENGINEERING NATIONAL UNIVERSITY OF ... Besides the experimental and analytical investigations, many CHAPTER INTRODUCTION computational methods have been presented to solve the problems of fluid flow and heat transfer in porous media...

Ngày tải lên: 16/09/2015, 12:42

... the flow patterns were 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 ... the geometry of the annulus, the properties of the fluid and the rotation rate of the outer cylinder on the flow and the heat transfer in the annular spaces are investigated Because of its common ... oscillatory multicellular flow occurred 1.3 Objectives and Scope The effects of the rotation of the outer cylinder on the flow and the heat transfer, in concentric configuration and eccentric configuration,...

Ngày tải lên: 27/11/2015, 11:12

... variable surface heat flux Chen and Char presented an exact solution of heat transfer for a stretching surface with variable heat flux P S Gupta and A S Gupta examined the heat and mass transfer for ... Communications in Heat and Mass Transfer, vol 12, no 1, pp 89–94, 1985 L J Grubka and K M Bobba, Heat transfer characteristic of a continuous surface with variabl temperature,” Journal of Heat Transfer, ... suction and blowing Elbashbeshy and Bazid studied heat and mass transfer over an unsteady stretching surface with internal heat generation Abd El-Aziz analyzed the effect of radiation on heat and...

Ngày tải lên: 21/06/2014, 11:20

... -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 ... the velocity and temperature of the flow field are solved employing perturbation technique and the effects of the flow parameters on the velocity and temperature of the flow field and also on ... 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...

Ngày tải lên: 05/09/2013, 14:58

Ngày tải lên: 17/03/2014, 13:49

... Engineering Thermofluids Thermodynamics, Fluid Mechanics, and Heat Transfer Mahmoud Massoud Engineering Thermofluids Thermodynamics, Fluid Mechanics, and Heat Transfer With 345 Figures and 13 Tables ... momentum, and heat transfer constitute the fundamentals of thermofluids This book discusses thermofluids in the context of thermodynamics, single- and two-phase flow, as well as heat transfer ... Definition of Thermofluids The study of thermofluids integrates various disciplines of the field of thermal sciences This field consists of such topics as thermodynamics, fluid mechanics, and heat transfer, ...

Ngày tải lên: 02/04/2014, 15:51

... additional content, answers to selected end -of- chapter problems, short fluid flow video clips, and software for solving problems in thermodynamics and in heat transfer • Access to a website with additional ... identify features of IT and IHT that will help you make good use of the software in solving thermodynamics and heat transfer problems Why use IT and IHT? You should consider IT and IHT as productivity ... temperature using software Version 05-31-02 Page of IHT: Some Special Tips IHT was designed to accompany the text Fundamentals of Heat and Mass Transfer (4ed, 2002) and Introduction to Heat Transfer (5ed,...

Ngày tải lên: 02/04/2014, 16:45

... Contents I The General Problem of Heat Exchange Introduction 1.1 Heat transfer 1.2 Relation of heat transfer to thermodynamics 1.3 Modes of heat transfer ... dilute, and then warm, our tea if we linger A society based on power technology teems with heat transfer problems Our aim is to learn the principles of heat transfer so we can solve these problems and ... 7.2 Heat transfer to and from laminar flows in pipes 342 7.3 Turbulent pipe flow 355 7.4 Heat transfer surface viewed as a heat exchanger 367 7.5 Heat transfer...

Ngày tải lên: 21/06/2014, 22:20

... condensation in Section 8.5, and of pool boiling burnout in Section 9.3 In all of these cases, heat transfer normally occurs without any conversion of heat to work or work to heat and it would be misleading ... Analysis of heat conduction and some steady one-dimensional problems §4.3 This need only be rearranged to put it in terms of the desired modified variables and x itself (y/x, x r , x, and xz): ... dimensional analysis of several heat transfer problems See, for example, the analyses of laminar convection problem at the beginning of Section 6.4, of natural convection in Section 8.3, of film condensation...

Ngày tải lên: 21/06/2014, 22:20

... imparts Problems 189 a surface flux of 40 kW/m2 Evaluate the temperature of the rod in either side of the heated section if h = 150 W/m2 K around the unheated rod, and Tambient = 27◦ C 4.39 The heat ... expression for Θ as a function of εf and other known information Calculate the base temperature 188 Chapter 4: Analysis of heat conduction and some steady one-dimensional problems 4.31 A cylindrical ... the one-dimensional heat gain through the door, neglecting any conduction around 190 Chapter 4: Analysis of heat conduction and some steady one-dimensional problems the edges of the skin Your answer...

Ngày tải lên: 21/06/2014, 22:20

... surface of a very large box of soil and kept at 35◦ C The surface of the soil is kept at 21◦ C If the steady heat transfer rate is 14 W, what is the thermal conductivity of this sample of soil? ... the end of the rod and about a meter of its length—in a tank of water at 80◦ C If h is 688 W/m2 K on both the end and the sides of the rod, plot the depth of the melt front as a function of time ... of the sphere is not to exceed 30◦ C? 5.31 A semi-infinite slab of ice at −10◦ C is exposed to air at 15◦ C through a heat transfer coefficient of 10 W/m2 K What is the initial rate of melting of...

Ngày tải lên: 21/06/2014, 22:20

... Dergarabedian The rate of growth of bubbles in superheated water J Appl Mech., Trans ASME, 75:537, 1953 [5.14] E R G Eckert and R M Drake, Jr Analysis of Heat and Mass Transfer Hemisphere Publishing ... course of modern fluid mechanics and aerodynamics and laid the foundations for the analysis of heat convection Some introductory ideas §6.1 271 Figure 6.2 Ludwig Prandtl (1875–1953) (Courtesy of Appl ... time his, and Germany’s, great influence in heat transfer and fluid mechanics waned He was succeeded in the chair by another of Germany’s heat transfer luminaries, Ernst Schmidt 276 Laminar and turbulent...

Ngày tải lên: 21/06/2014, 22:20

... becomes thinner and smaller levels of roughness influence f Some typical pipe roughnesses are given in Table 7.3 The importance of a given level of roughness on friction and heat transfer can determined ... ducts are also given by Shah and London [7.5] 7.6 Heat transfer during cross flow over cylinders Fluid flow pattern It will help us to understand the complexity of heat transfer from bodies in a cross ... right, and it also reveals a number of analytical methods that apply to other configurations Now we wish to undertake a sequence of progressively harder problems of forced convection heat transfer...

Ngày tải lên: 21/06/2014, 22:20

... Jacobi, and R K Shah Fluid ow and heat transfer at micro- and meso-scales with application to heat exchanger design Appl Mech Revs., 53(7):175193, 2000 [7.3] W M Kays and M E Crawford Convective Heat ... [7.8] M S Bhatti and R K Shah Turbulent and transition ow convective heat transfer in ducts In S Kakaỗ, R K Shah, and W Aung, editors, Handbook of Single-Phase Convective Heat Transfer, chapter ... Exptl Thermal Fluid Sci., 13:5570, 1996 [7.17] R L Webb Enhancement of single-phase heat transfer In S Kakaỗ, R K Shah, and W Aung, editors, Handbook of Single-Phase Convective Heat Transfer, chapter...

Ngày tải lên: 21/06/2014, 22:20

... space, the heated uid buoys up and then follows the contours of the container, releasing heat and in some way returning to the heater This recirculation process normally enhances heat transfer ... [8.2] C J Sanders and J P Holman Franz Grashof and the Grashof Number Int J Heat Mass Transfer, 15:562563, 1972 [8.3] S W Churchill and H H S Chu Correlating equations for laminar and turbulent ... surfaces Int J Heat Mass Transfer, 16(6):11471163, 1973 [8.19] M Al-Arabi and M K El-Riedy Natural convection heat transfer from isothermal horizontal plates of dierent shapes Int J Heat Mass Transfer, ...

Ngày tải lên: 21/06/2014, 22:20

... [9.46] D Steiner and J Taborek Flow boiling heat transfer in vertical tubes correlated by an asymptotic model Heat Transfer Engr., 13 (2):43–69, 1992 [9.47] S G Kandlikar and H Nariai Flow boiling ... study of laminar film condensation of flowing vapour Int J Heat Mass Transfer, 9:581–591, 1966 [9.60] P J Marto Condensation In W M Rohsenow, J P Hartnett, and Y I Cho, editors, Handbook of Heat Transfer, ... aspects of boiling heat transfer AEC Report AECU-4439, Physics and Mathematics, 1959 [9.18] J H Lienhard and V K Dhir Extended hydrodynamic theory of the peak and minimum pool boiling heat fluxes...

Ngày tải lên: 21/06/2014, 22:20

... diffusion of heat, conservation of mass and Fick’s law lead to equations for the convection and diffusion of species in a mixture The great similarity of the equations of heat convection and diffusion ... gases within it are at a temperature of 1500◦ C and a pressure of atm, and the absorbing components consist of 12% by volume of CO2 and 18% H2 O Neglect end effects and determine how much cooling must ... Chapter 10: Radiative heat transfer [10.25] U.S Department of Commerce Solar Heating and Cooling of Residential Buildings, volume and Washington, D.C., October 1977 Part V Mass Transfer 595 11 An...

Ngày tải lên: 21/06/2014, 22:20

... consider the calculation of µ and k for mixtures of gases Two of the most important results of the kinetic theory of gases are the predictions of µ and k for a pure, monatomic gas of species A: µA = ... as the product of a heat transfer coefficient, h, and a driving force for heat transfer, ∆T Thus, in the notation of Fig 11.14, qs = h (Ts − Te ) (1.17) In convective mass transfer problems, we ... about 2% for µ and within about 4% for k To compute µm and km , we use eqns (11.54) and (11.55) and the tabulated values of µ and k Identifying N2 , O2 , and Ar as species 1, 2, and 3, we get...

Ngày tải lên: 21/06/2014, 22:20

... dimensions of mass, length, and time, and vice versa We not make a practice of eliminating energy in terms of force times length because the accounting of work and heat is often kept separate in heat transfer ... and [A.21] Sources of olive oil data include [A.20, A.22, A.23], and those for Freon 12 include [A.14] Volumes 3, 6, 10, and 11 of [A.2] gave many of the other values of cp , k, and µ = ρν, and ... (W/m2 K) hfg , hsf , hsg latent heat of vaporization (J/kg), latent heat of fusion (J/kg), latent heat of sublimation (J/kg) hfg latent heat corrected for sensible heat F (t) time-dependent driving...

Ngày tải lên: 21/06/2014, 22:20

... and rapid heat and mass transfer (Miyazaki and Maeda, 2006) Also microfluidic systems could provide good control of cell-cell, cell-substrate and cell-medium interactions (Folch and Toner, 2000); ... numerical investigations of fluid flow and mass transfer in microchannel bioreactors for single-culture systems with single cell-type, randomly distributed co-culture and micropatterned co-culture ... many studies to manipulate and investigate the fluid microenvironment around cells The objective of this thesis was to develop a numerical model of the fluid flow and mass transport in a microchannel...

Ngày tải lên: 12/09/2015, 21:13