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Information × Registration Number 0218U000077, 0117U002886 , R & D reports Title Development of algorithmic and software to create energy efficient modes of gas transport system of Ukraine in conditions of partial load popup.stage_title Head PyanyloYa.D., Registration Date 16-01-2018 Organization Centre of Mathematical Modelling Institute of Applied Problems Mechanic and Mathematic named after Ya. S.Pidstryhach NAS Ukraine popup.description2 Efficient operation of the GTS in conditions of existing uncertainty, fuzzy predictability and instability requires a prompt adequate response to make optimal decisions. To ensure the above mentioned, the following work was carried out: algorithms for the rapid formation of optimal modes for single-stranded, multi-threaded and structures with contours of main gas pipelines systems were developed; the criteria for estimating the optimality of the modes are developed and the relationship between the stability and energy efficiency of the modes is established; software modules have been developed and their integration in the subsystem of decision making of the control system of gas flow in active objects. The mathematical model for describing the processes of filtration redistribution of gas mass in a porous medium for small pressure disturbances is developed. Within the framework of the model, the problems of relaxation equalization of reservoir pressure are formulated and quantitatively studied, depending on the filtration properties of the porous medium and the amount of unburied gas pressure in the porous space. A theoretical and experimental method for determining the coefficients of the dependence of the permeability and porosity of samples of the medium on the gas pressure in the pore space has been developed. The method is based on the inverse filtration problem formulated within the framework of the developed model and the data of pressure measurements at the input and output of the sample. The results can be used to optimize the management of underground gas storage facilities. Product Description popup.authors Браташ О.Б. Лянце Г.Т. П"янило Г.М. П"янило Я.Д. Притула З.В. Притула М.Г. Притула Н.М. Чекурін В.Ф. popup.nrat_date 2020-04-02 Close