Computational fluid mechanics and heat transfer third edition 3

... body, with a heat transfer coeﬃcient between the environment and the body 69 70 Heat conduction, thermal resistance, and the overall heat transfer coeﬃcient §2 .3 Figure 2. 13 Heat transfer through ... eﬀective heat 78 Heat conduction, thermal resistance, and the overall heat transfer coeﬃcient §2.4 transfer coeﬃcient heﬀ = h + hrad = 18.44 W/m2 K Then, Bi = (18.44)(0.0 036 /2) heﬀ ro = = 0.0 033 k ... hrad + h A calculation shows A = 133 mm2 = 1 .33 × 10−4 m2 for the resistor surface Thus, the equivalent thermal resistance is Rtequiv = = 38 6.8 K/W (1 .33 × 10−4 )( 13 + 6.44) Since Q= Tresistor −...

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Computational Fluid Mechanics and Heat Transfer Third Edition_1 docx

... 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 ... 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 ... A Heat Transfer Textbook A Heat Transfer Textbook Third Edition by John H Lienhard IV and John H Lienhard V Phlogiston Press Cambridge Massachusetts...

Computational Fluid Mechanics and Heat Transfer Third Edition_5 doc

... 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 ... material, and thickness L is connected across the terminals of a power supply and serves as a resistance heater The voltage, current and T∞ are known The plate is insulated on the bottom and transfers ... (4.25) is plotted on the left-hand side of Fig 4.5 for Bi equal to 0, 1, and ∞ and for Γ equal to 0, 0.1, and The following features should be noted: • When Γ 0.1, the heat generation can be ignored...

Computational Fluid Mechanics and Heat Transfer Third Edition_6 doc

... 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 transfer coeﬃcient between a cool surface and a saturated vapor, when ... a wall and have h 600 W/m2 K and T0 = 170◦ C What is the heat ﬂow rate into each ﬁn and what is the eﬀectiveness? T∞ = 20◦ C 4.15 A thin rod is anchored at a wall at T = T0 on one end and is ... distribution and the heat ﬂux at the base Plot the temperature distribution and ﬁn thickness against x/L Derive an expression for ηf 186 Chapter 4: Analysis of heat conduction and some steady...

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Computational Fluid Mechanics and Heat Transfer Third Edition_7 potx

... semi-inﬁnite region by an environment at T∞ , through a heat transfer coeﬃcient, h 227 228 Transient and multidimensional heat conduction By trial and error, we get t Θ(ζ = 0, β) §5.6 0.33 s In fact, ... ﬂows impose heat transfer coefﬁcients of 46 W/m2 K The two intervening sides are cooled by natural convection to water at 15◦ C, with a heat transfer coefﬁcient of 30 W/m2 K What is the heat ﬂow ... temperature gradient and heat transfer rate are higher than in Jakob’s model, which neglected the liquid motion Therefore, the temperature proﬁle ﬂattens out more slowly than Jakob predicts, and the bubble...

Computational Fluid Mechanics and Heat Transfer Third Edition_8 ppt

... relevant parameter? References [5.1] H D Baehr and K Stephan Heat and Mass Transfer SpringerVerlag, Berlin, 1998 [5.2] A F Mills Basic Heat and Mass Transfer Prentice-Hall, Inc., Upper Saddle River, ... seminal contributions to heat exchanger design methodology He held this position until 1952, during which time his, and Germany’s, great inﬂuence in heat transfer and ﬂuid mechanics waned He was ... thick and sits on compacted earth Both the slab and the ground below it are now at 20◦ F The building operator turns on the heating system, quickly warming the air to 60◦ F If the heat transfer...

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Computational Fluid Mechanics and Heat Transfer Third Edition_10 docx

... between about 0.028 and 0.053 depending upon the Prandtl number and the wall boundary condition [7.4, 7.5] §7.2 Heat transfer to and from laminar ﬂows in pipes Figure 7.4 Local and average Nusselt ... by Seban and Shimazaki [7.20] had suggested C1 = 4.8 and C2 = 0.025.) For uniform wall heat ﬂux, many more data are available, Heat transfer surface viewed as a heat exchanger §7.4 and Lyon [7.21] ... pipe 7.2 Heat transfer to and from laminar ﬂows in pipes Not many industrial pipe ﬂows are laminar, but laminar heating and cooling does occur in an increasing variety of modern instruments and equipment:...

Computational Fluid Mechanics and Heat Transfer Third Edition_11 docx

... Kalish and O E Dwyer Heat transfer to NaK owing through unbaed rod bundles Int J Heat Mass Transfer, 10:15331558, 1967 [7.29] W M Rohsenow, J P Hartnett, and Y I Cho, editors Handbook of Heat Transfer ... [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 ... White Viscous Fluid Flow McGraw-Hill Book Company, New York, 1974 [7.2] S S Mehendale, A M Jacobi, and R K Shah Fluid ow and heat transfer at micro- and meso-scales with application to heat exchanger...

Computational Fluid Mechanics and Heat Transfer Third Edition_12 docx

... convection heat transfer from a plate with arbitrary inclination Int J Heat Mass Transfer, 15(4): 755767, 1972 [8.17] G C Vliet Natural convection local heat transfer on constant 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 ... 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...

Computational Fluid Mechanics and Heat Transfer Third Edition_14 docx

... Chapter 9: Heat transfer in boiling and other phase-change conﬁgurations [9.34] J R Ramilison and J H Lienhard Transition boiling heat transfer and the ﬁlm transition region J Heat Transfer, 109, ... ASME-AIChE Heat Transfer Conf Boston, August 1963 [9.45] S G Kandlikar A general correlation for saturated two-phase ﬂow boiling heat transfer inside horizontal and vertical tubes J Heat Transfer, ... W.-G Dong, and J H Lienhard Use of a cubic equation to predict surface tension and spinodal limits J Heat Transfer, 108(2):405–410, 1986 517 518 Chapter 9: Heat transfer in boiling and other phase-change...

Computational Fluid Mechanics and Heat Transfer Third Edition_16 ppt

... owing to heat loss to the colder outdoor air Find (a) the heat transfer by radiation to the window; (b) the heat transfer by natural convection to the window; and (c) the fraction of heat transferred ... assuming that no heat is transferred to the interior Then, an energy balance on the roof must account for radiation absorbed from the sun and the sky and for heat lost by convection and reradiation: ... 35◦ C, and a light breeze produces a convective heat transfer coeﬃcient of h = W/m2 K The sky temperature is 18◦ C Find the 578 Radiative heat transfer §10.6 Table 10.4 Solar absorptance and infrared...

Computational Fluid Mechanics and Heat Transfer Third Edition_17 pot

... between heat transfer and low-rate mass transfer may be used directly to adapt natural convection heat transfer predictions to natural convection mass transfer As before, we replace Nu by Num and ... 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 ... unity, the analogy between heat and mass transfer breaks down in those natural convection problems that involve both heat and mass transfer, because the concentration and thermal boundary layers...

Computational Fluid Mechanics and Heat Transfer Third Edition_19 docx

... McLinden, and D G Friend Thermodynamic and Transport Properties of Pure Fluids — NIST Pure Fluids National Institute of Standards and Technology, Gaithersburg, MD, September 2000 NIST Standard Reference ... Norris, F F Buckland, N D Fitzroy, R H Roecker, and D A Kaminski, editors Heat Transfer Data Book General Electric Co., Schenectady, NY, 1977 [A.13] ASM Handbook Committee Metals Handbook ASM, International, ... hrad local heat transfer coeﬃcient (W/m2 K), or enthalpy (J/kg), or height (m), or Planck’s constant (6.6260755 × 10−34 J·s); average heat transfer coeﬃcient (W/m2 K); radiation heat transfer coeﬃcient...

Computational fluid mechanics and heat transfer anderson

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