USE OF FULL-SCALE EXPERIMENT DATA TO BUILD A SEMI-EMPIRICAL MODEL WHEN THE ICEBREAKER MOVES WITH INCURSIONS
E. M. Gramuzov, V. A. Zuev, N. V. Kalinina, A. A. Kurkin
VANT. Ser.: Mat. Mod. Fiz. Proc 2021. Вып.4. С. 83-90.
Attention to arctic maritime traffic is growing. The most universal means to fight ice hurdles is icebreaking fleet. Heavy ice conditions are frequent at operation of icebreakers when it is impossible to move continuously. So, icebreakers have to move in incursions. This type of motion is currently studied most poorly. Theoretical and experimental research and generalization of the operational experience for icebreakers play an important role in the development of the study. When the icebreaker operates in incursions (irruptions), it is a cyclic movement, and each cycle consists of stages. Nonlinear differential equations of the second order are presented; they describe all motion stages when the icebreaker operates with incursions. Their earlier produced analytical solutions are provided. Methods to use data produced in the course of full-scale experiments and accumulated earlier are offered to obtain coefficients of semi-empirical models of cyclic motion in incursions. We show the implementation efficiency of the proposed methods. Keywords: ice, movement of the icebreaker in incursions, mathematical simulation, semi-empirical model, data of full-scale experiments.
|
English
