![]() Only the composition of the mixture and the molecular weights and viscosities of the pure components in the mixture are required. The extension of the theory to dense gases of hard spheres was accomplished by Enskog (1922), who obtained an expression for the viscosity coefficient similar to one proposed by Jäger (1900). Elavidson' ABSTRACT The Bureau of Mines Helium Field Operations has developed a simple and accurate method for calculating the viscosity of gas mixtures. It was not until half a century later that Chapman (1916) and Enskog (1917) independently succeeded in determining the velocity-distribution function to an accuracy sufficient for the calculation of transport coefficients for any assumed force law. However, Maxwell and Boltzmann did not manage to solve their equations except in a few special cases. Maxwell (1866) and Boltzmann (1872) proposed more general methods for dealing with transport processes in gases these methods form the basis of the modern theory. Maxwell's original mean-free-path theory for hard spheres (1860) was refined by Tait, Sutherland, Rayleigh, and Jeans, but suffered from inherent limitations because the velocity-distribution function in a nonuniform gas was unknown. Find step-by-step Engineering solutions and your answer to the following textbook question: How does the dynamic viscosity of (a) liquids and (b) gases vary with temperature. This article reviews the development of theories of transport phenomena by Maxwell, Boltzmann, Chapman, and Enskog, and their application to the calculation of the viscosity coefficient.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |