![]() 19.3-3 and 24.1-10): q + w = −k∇T + ĭiffusive mass and molar flux vectors (ordinary diffusion only see Eq. = ptij − 4((□vj ∕□xi ) + (□vi ∕□xj ))Ĭonductive heat flux vector + work flux vector (pure fluids only see Eqs. ![]() ![]() MOLECULAR FLUX EXPRESSIONS Molecular momentum flux tensor (i = constant, Newtonian fluid): = pt − 4(∇v + (∇v)† ) SUMMARY OF FLUX EXPRESSIONS CONVECTIVE FLUX EXPRESSIONS Convective momentum flux tensor: 0Ĭonvective energy flux vector: ( ) ̂ + 1 iv2 v q(c) = iU 2Ĭonvective mass and molar flux vectors: = iaA v j(c) A (c) * JA = cxA v* Devoting more space to mathematical derivations and providing fuller explanations of mathematical developments-including a section of the appendix devoted to mathematical topics-allows students to comprehend transport phenomena concepts at an undergraduate level. The organization of the material is similar to Bird/Stewart/Lightfoot, but presentation has been thoughtfully revised specifically for undergraduate students encountering these concepts for the first time. The text covers topics such as: the transport of momentum the transport of energy and the transport of chemical species. Some of the rigorous topics suitable for the advanced students have been retained. The authors’ goal in writing this book reflects topics covered in an undergraduate course. Lightfoot, and Daniel Klingenberg is a new introductory textbook based on the classic Bird, Stewart, Lightfoot text, Transport Phenomena.
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