By William M. Deen

ISBN-10: 0195084942

ISBN-13: 9780195084948

An amazing textual content for graduate point classes in shipping phenomena for chemical engineers, Analysis of shipping Phenomena offers a unified therapy of momentum, warmth, and mass move, emphasizing the strategies and analytical ideas that follow to all of those shipping tactics.
the 1st few chapters determine the instruments wanted for later analyses whereas additionally protecting warmth and mass move in desk bound media. The similarities one of the molecular or diffusive delivery mechanisms--heat conduction, diffusion of chemical species, and viscous move of momentum--are highlighted. Conservation equations for scalar quantites are derived first ordinarily shape, after which used to acquire the governing equations for overall mass, power, and chemical species. The scaling and order-of-magnitude techniques that are an important in modeling also are brought. convinced key tools for fixing the differential equations in shipping difficulties, together with similarity, perturbation, and finite Fourier rework strategies, are defined utilizing conduction and diffusion difficulties as examples.
Following chapters are dedicated to fluid mechanics, starting with basic equations for momentum move after which discussing unidirectional move, approximately unidirectional (lubrication) move, creeping circulation, and laminar boundary layer circulation. Forced-convection warmth and mass move in laminar circulation, multicomponent strength and mass move, loose convection, and turbulence also are coated. The appendix summarizes vector and tensor operations and relatives concerning quite a few coordinate platforms.
according to two decades of educating and broad category checking out, Analysis of delivery Phenomena bargains scholars either broad insurance of the subject and inclusion of contemporary examples from bioengineering, membrane technology, and fabrics processing. it truly is mathematically self-contained and is additionally certain in its therapy of scaling and approximation suggestions and its presentation of the finite Fourier rework approach for fixing partial differential equations.

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The situation is simplest for gases where, according to kinetic theory, transport results from exchanges that occur during molecular collisions. The concept of a collision is meaningful when the time spent during encounters with other molecules is much smaller than that spent between such encounters. 5-6) where R is the gas constant, NAvis Avogadro's number, M is molecular weight (molar), and d is molecular diameter. For a mixture of A and B it is necessary to use average values of M and din Eqs.

Measurements of the viscosity of thin films of n-tetradecane (a Newtonian liquid) sheared between molecularly smooth surfaces have shown that JL is within 10% of its bulk value for film thicknesses as small as 10 molecular diameters (lsraelachvili and Kott, 1989). m) may be too conservative. A factor which tends to mitigate any effects of fluctuations in transport studies with porous media, especially, is that the macroscopic quantities measured are averages over large numbers of pores. With regard to heat transfer, Flik et al.

8 X 1()2 LDPEt. 1 x w-z "Most of the data are from Reid et al. (1987), for atmospheric pressure. The viscosity of water and the heat capacities needed to calculate Pr for water, benzene (C6H6), and chloroform (CHCIJ) are from Weast (1968). The data for liquid sodium and engine oil were taken from Rohsenow and Hartnett (1973). The values for mollen silicon are from Touloukian and Ho (1970) and Glazov et al. (1969). ~>Low-density polyethylene. The property values for molten LDPE are order-of-magnitude estimates from Tadmor and Oogos (1979) and depend on the flow conditions.

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Analysis of Transport Phenomena by William M. Deen


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