The article is devoted to the methodology of mathematical modeling of helical flowmeter for oil and oil products. The problems and features of the development of helical flowmeter for oil and oil products are considered. One of the solutions is the use of mathematical apparatus proposed by the authors to solve the existing problems. We described the general (main) stages of mathematical modeling of the helical flowmeter for oil and oil products: conceptual set up of the problem, mathematical statement of the problem, the selection and justification of the method for solving the problem, the implementation of the mathematical model as a software product, checking the adequacy, practical use. For each stage of mathematical modeling the article provides the technique of conducted research, the main results are presented. The design of the helical flowmeter is considered, generalized conceptual formulae describing the helical rotor and the helical flowmeter are given. The developed mathematical model of the helical flowmeter and software product are described. The requirements for the system software are given. For practical application of the mathematical model and software we tested its adequacy. The initial results of the practical application of the mathematical model are presented. The results of the modification of the real helical flowmeter are considered. In conclusion of the article, general conclusions are made on the results of mathematical modeling of the helical flowmeter for oil and oil products, further ways of research and improvement of the results are considered.
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