Heat Transfer By B.k. Dutta Pdf Free Download
Mui Chaille
An exhaustive and comprehensive textbook intended for Heat Transfer courses being taught at the undergraduate level, Heat Transfer: Principles and Applications is very thorough in its approach to the subject. It lays out a strong fundamental framework of the basic principles, following it up with the application of those principles to practical engineering and is inclusive of the changes and developments in heat transfer equipment that have taken place in the last few years.
A comprehensive theoretical analysis of the basic modes of heat transfer, namely, convection, conduction, and radiation, have been highlighted and well supported through a vast array of design-oriented and practical problems with their given solutions. Considering the significance of the heat transfer coefficient in handling convective heat transfer related issues, one entire chapter of the book is dedicated to providing a well-illustrated explanation of this concept. In addition, apt and carefully chosen examples have been used to shed light on heat transfer correlations and their use. The contents of Heat Transfer: Principles and Applications include topics such as Forced Convection, Heat Exchangers, Evaporation and Evaporators, Boundary Layer Heat Transfer, Steady State Conduction in One Dimension, Radiation Heat Transfer, Heat Transfer Coefficient, Unsteady State and Multidimensional Heat Conduction, Boiling and Condensation, and finally, Answers to Selected Problems.
\r \tAn exhaustive and comprehensive textbook intended for Heat Transfer courses being taught at the undergraduate level, Heat Transfer: Principles and Applications is very thorough in its approach to the subject. It lays out a strong fundamental framework of the basic principles, following it up with the application of those principles to practical engineering and is inclusive of the changes and developments in heat transfer equipment that have taken place in the last few years.
\r \tA comprehensive theoretical analysis of the basic modes of heat transfer, namely, convection, conduction, and radiation, have been highlighted and well supported through a vast array of design-oriented and practical problems with their given solutions. Considering the significance of the heat transfer coefficient in handling convective heat transfer related issues, one entire chapter of the book is dedicated to providing a well-illustrated explanation of this concept. In addition, apt and carefully chosen examples have been used to shed light on heat transfer correlations and their use. The contents of Heat Transfer: Principles and Applications include topics such as Forced Convection, Heat Exchangers, Evaporation and Evaporators, Boundary Layer Heat Transfer, Steady State Conduction in One Dimension, Radiation Heat Transfer, Heat Transfer Coefficient, Unsteady State and Multidimensional Heat Conduction, Boiling and Condensation, and finally, Answers to Selected Problems.
I'm currently in my third year of chemical engineering and I was wondering if any of you know what the simplest book to study mass transfer is. The book we're using in class is Transport Processes and Separation Process Principles by Geankoplis. I find it mediocre in explanations, and so I want to look for other resources. I found some books online; however, they all focus on heat transfer then discuss mass transfer at the end and not thoroughly. I know that mass and heat use the same concepts but is there a book that explains mass transfer only?
Impinging jets have been studied in great depth due to theirhigh rates of heat transfer and wide range of application [1-4].Several researchers have observed heat transfer and fluid flowcharacteristics for single phase and two-phase free surface jetimpingement. For the single-phase free surface jet impingement,Kuraan et al. [5] studied the nozzle-to-plate spacings effect on heattransfer and found correlations for hydraulic jump diameter andlocal Nusselt number. Friedrich et al. [6] investigated the effects ofvolumetric quality on thermal performance of two-phase impingingjets and showed the optimum design of the jet impingement.
In a submerged jet, the jet ejects into a fluid of the same statebefore impinging on a surface, where the entrainment of thesurrounding fluid is significant. Choo et al. [7] experimentallyinvestigated thermal characteristics on a flat plate and showed thatthe governing parameter of the heat transfer is stagnation pressure.Bieber et al. [8] numerically investigated the submerged laminarslot jet impingement. They suggested correlations for submergedslot jets as functions of nozzle-to-plate distance, heat flux, and walltemperature. The purpose of this study is to determine the heattransfer and fluid flow characteristics of two-phase submerged andfree surface impinging jets and compare the two impinging jets.
The two-dimensional boundary layer flow of a non-Newtonian Casson fluid and heat transfer due to an exponentially permeable shrinking sheet with viscous dissipation is investigated. Using similarity transformations, the governing momentum and energy equations are transformed to self-similar nonlinear ODEs and then those are solved numerically by very efficient shooting method. The analysis explores many important aspects of flow and heat transfer of the aforesaid non-Newtonian fluid flow dynamics. For the steady flow of non-Newtonian Casson fluid, more amount of wall mass suction through the porous sheet is required in comparison to that of Newtonian fluid flow. Dual similarity solutions are obtained for velocity and temperature. The viscous dissipation effect has major impact on the heat transfer characteristic. In fact, heat absorption at the surface occurs and it increases due to viscous dissipation. For higher Prandtl number, the temperature inside the boundary layer reduces, but with larger Eckert number (viscous dissipation) it is enhanced.
On the other hand, Magyari and Keller [20] initiated a study of the boundary layer flow with heat transfer over an exponentially stretching sheet. The effect of wall mass suction on the boundary layer flow and heat transfer over an exponentially stretching sheet was studied by Elbashbeshy [21]. Al-Odat et al. [22] considered an exponential temperature distribution on the boundary layer flow towards an exponentially stretching surface. Later, Sajid and Hayat [23] obtained the series solutions for the boundary layer flow over an exponentially stretching sheet with thermal radiation using homotopy analysis method (HAM). Bidin and Nazar [24] and Ishak [25] numerically investigated the effect of radiation on the boundary layer flow and heat transfer over an exponentially stretching sheet. However, very limited attention has been given to study the boundary layer flow over an exponentially shrinking sheet though it is equally significant in many engineering processes as that of exponentially stretching sheet. The flow and heat transfer due to exponentially shrinking sheet were first discussed by Bhattacharyya [26] and the effect of magnetic field was illustrated by Bhattacharyya and Pop [27]. Rahman et al. [28] showed the effect of nanoparticles on the boundary layer flow past an exponentially shrinking sheet with second-order slip.
Fluid viscosity changes some amount of kinetic energy into thermal energy during motion and this effect of viscosity is irreversible. This is known as viscous dissipation and though it is small, it is very important. Brinkman [42] was the first who considered the effect of viscous dissipation. Kishan and Deepa [43] studied the boundary layer flow and heat transfer near a stagnation point immersed in a porous medium in the presence of viscous dissipation. Singh [44] examined the viscous boundary layer flow and heat transfer of an electrically conducting fluid past a moving plate in a porous medium with viscous dissipation and variable viscosity. The unsteady MHD flow over a permeable stretching sheet with combined effects of viscous dissipation and radiation was investigated by Chand and Jat [45]. Recently, Malik et al. [46] investigated the electrically conducting flow of a non-Newtonian Sisko fluid past a stretching cylinder with viscous dissipation.
Consider a steady two-dimensional incompressible fluid flow and heat transfer of a Casson fluid over an exponentially permeable shrinking sheet with viscous dissipation. The sheet is situated at , with the flow being confined in . It is also assumed that the rheological equation of state for an isotropic and incompressible flow of a Casson fluid can be written as [47, 48] where is the rate-of-strain tensor, is the Casson coefficient of viscosity, is the yield stress of fluid, is the product of the component of deformation rate with itself, and is the critical value of the product of the component of the rate-of-strain tensor with itself. Under these conditions the boundary layer equations for the steady flow of Casson fluid and heat transfer over an exponentially shrinking sheet may be written in usual notation as [36]subject to the boundary conditions where and are velocity components in and directions, respectively, is shrinking velocity of the sheet with being a positive constant,is the kinematic fluid viscosity, is the density, is the Casson parameter, 0 is the strength of the suction velocity, T is the temperature, L is the reference length, is the thermal diffusivity of the fluid, is the specific heat, is the temperature at the sheet, and is the free stream temperature assumed to be constant. A physical sketch of the flow problem is given in Figure 1.
The variations of local skin friction coefficient and local heat transfer coefficient (which are proportional to the wall skin friction coefficient and the local Nusselt number or the rate of heat transfer, resp.) with suction for several values of Casson parameter are shown in Figures 2 and 3. From Figures 2 and 3, it is observed that the skin friction coefficient and the heat transfer rate increase with an increase in the values of for the first solution while for the second solution the values decrease. Hence, for non-Newtonian Casson fluid, the local skin friction coefficient is less compared to that of Newtonian fluid case for first solution and reverse result shows in case of second solution. It is also observed from these figures that the values of skin friction coefficient are always positive, which implies that the fluid exerts a drag force on the sheet and the heat transfer coefficient is negative which indicates the heat absorption at the sheet; that is, the heat flows from the ambient fluid to the sheet. Also, the values of temperature gradient at the sheetfor different values of the Eckert number Ec and Prandtl number Pr are plotted in Figures 4 and 5, respectively. From Figure 4 it is observed that for both the first and second solutions the heat transfer rate decreases with increasing values of Ec. Thus, more heat is generated in the boundary layer region due to the viscous dissipation and hence it reduces the heat transfer rate from the sheet; that is, it enhances the heat absorption, whereas, with the increase in Pr, the value of (Figure 5) increases for both solutions and for higher values of Pr it becomes positive, which implies that heat transfers from the hot sheet to the ambient fluid. In addition, to provide a clear view of the flow field the streamlines are plotted for both solutions for fixed values of suction parameter and Casson parameter in Figures 6 and 7.
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