Geología - Hidráulica

    • Numerical Simulation of Gas Pipeline Networks: Theory, Computational Implementation, and Industrial Applications

      S/344

      The book considers computation technologies and methods for numerical simulation intended for solving the problems of improving the operational safety and the efficiency of industrial gas pipeline networks. This approach is based on modern methods of computational mechanics and mathematical optimization.

      The application of these methods and technologies is aimed at an integrated assessment of the state of the gas pipeline networks of industrial enterprises and the creation of efficient safe modes for their operation. These methods can be applied both at the stage of a pipeline network’s design and at the stage of its operation. They allow for the development of efficient automated hardware and software systems for the early detection and prevention of dangerous malfunctioning of a pipeline network. They can be of use for development and efficiency analysis concerning anti-terrorist activities at big industrial energy plants.

      Practical applications of computation technologies and methods of numerical simulation are illustrated with examples of solving industrial problems for gas industry enterprises. The authors demonstrate the efficiency of these technologies and the methods for improving the safety of the oil pipeline networks serving thermal power stations.

      The book is intented for scientists and engineers who deal with the design of pipeline networks, the analysis of their actual state, pipeline network insurance and control, improving their industrial safety and environmental friendliness, in the context of a wide range of environment-oriented measures. The material is also comprehensible to graduate students in technical high schools.

      46 tables, 362 figures. Bibliography: 392 titles.

    • Non-equilibrium Statistical Thermohydrodynamics of Turbulence. GEOLOGIA

      S/181

      A new approach to the theory of the small-scale dissipative turbulence based on non-equilibrium thermodynamics,

      continuum-mechanics and the statistical physics is developed in the monograph. The classical expression for the macroscopic kinetic energy of a small fl uid particle in classical non-equilibrium thermodynamics is generalized by taking into account the local velocity shear related with the rate of strain tensor. The closure relation for the three-dimensional isotropic homogeneous small-scale dissipative turbulence (in an incompressible viscous Newtonian fluid) is founded by combining the classical statistical approaches, the conception of the statistical ensemble and the classical formulation of the law of large numbers. The signifi cance of the new approach is evaluated for laboratory and oceanic stratified turbulence. The

      practical application of the new approach is shown in physical oceanography.

    • Luminescent spectra of minerals. Reference-book

      S/213

      The book describes spectral luminescent properties of a large group of minerals. This is the first publication of the kind that has no analogues in the scientific literature on the subject.

      Part I presents classification of luminescent substances in nature at several systematic levels: global luminescent geospheres, geochemical luminescent anomalies and crystal-chemistry systematization of luminescent minerals.

      New luminescence techniques are described: detection of luminescent properties of minerals (apatite, fluorite, calcite, plagioclases, scheelite, and other) versus their genetically-defined features; mineralogical analysis; models of luminescent haloes of kimberlite pipes, ruby bearing scarns, emerald-bearing rocks, etc. Techniques for luminescent sorting of minerals are also depicted.

      Part II summarizes spectroscopic luminescent properties of minerals. It includes photo-, X-ray-, and cathodoluminescence spectra, excitation spectra and time-decay parameters of luminescent minerals broken into 25 groups. These groups represent homoatomic minerals, sulfides, halides and oxygenous minerals versus different metals in their formulas, groups of minerals with adsorbed luminescent impurities and a group of hydrocarbon minerals. Summary features of over two thousand samples of some 320 minerals are presented in numerous tables. Information on samples’ history is also provided (genetic types of mother rocks, names and geographic locations of deposits, etc.). The presented results are based on the analysis of about three thousand spectra measured at room and liquid-nitrogen temperatures. Most of the observed spectral bands and lines are ascribed to definite electron transitions in luminescent chemical elements and molecules.

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