The monograph offers methods and technologies for numerical modeling of gas pipeline systems for a comprehensive analysis of their actual state, high-precision optimization of their operating modes and timely prevention of emergency situations. They are built using well-known basic mathematical models of continuum mechanics, modern numerical methods of mechanics and mathematical programming. The practical application of these methods and technologies is illustrated by the example of gas pipelines. The book can be useful to researchers, graduate students and engineers engaged in mathematical modeling of complex technical systems. The material is available to senior students of technical universities . Table. 13. IL. 113. Bibliographic . 332 titles. Scientific publication Previous publications: Modern computer simulators in pipeline transport: mathematical modeling methods and practical application http://www. infanata. org/2007/03/02/sovremennye_kompjuternye_trenazhery_v_truboprovodnom_transporte_matematicheskie_metody_modelirovanija_i_prakticheskoe_primenie. html Basics of Numerical Modeling of Main Pipelines http://www. infanata. org/2007/03/01/osnovy_chislennogo_modelirovanija_magistralnykh_truboprovodov. html