ИСТИНА |
Войти в систему Регистрация |
|
Интеллектуальная Система Тематического Исследования НАукометрических данных |
||
The paper describes the upgraded version of the Plasmaless computational code and presents the results of its application to the calculations of magnetic fields in tokamak installations. This code is a part of new version of Integrated software environment based on approach described in our previous paper [1]. Plasmaless code is a part of a TOKSCEN computational block [2] and is designed to calculate magnetic fields and inducted currents in tokamak installations. Plasmaless code is based on the numerical solution of a system of Kirchhoff electrical equations in a two-dimensional model. The poloidal field coils and passive elements of the tokamak are represented as a set of rings. Depending on the available data values of currents flowing through active coils of a poloidal field at each moment of time or the magnitude of voltages in the coils is used as input data. The currents induced in passive structural elements are calculated by solving the equations of electrical circuits, at zero initial values of the currents in these turns. To solve this system of equations, the Runge-Kutta method of the second order in time is used. The output information is the values of magnetic fields, magnetic flux and values of currents flowing through the chamber and other conductive elements of the device. The performed methodological calculations showed that the number of partition fragments required to achieve the adequacy of modeling should be on the order of several hundreds. Comparisons of experimentally measured and calculated magnetic fields in the Tokamak T-15MD [3-5] installation were made using the upgraded Plasmaless code and the likeness of experimental and calculated values is discussed. The results of the work will be used to calibrate the system of magnetic probes of this facility as part of its preparation for physical launch.