Короткий опис(реферат):
В статті показана необхідність розгляду відривного обтікання тіл, просторових потоків рідини, вивчення їх взаємодії, взаємного впливу, а також в зв’язку з цим розгляд нових класів задач та шляхи їх вирішення. В статье показана необходимость рассмотрения отрывного обтекания тел, пространственных потоков жидкости, изучения их взаимодействия, взаимного влияния, а также в связи с этим рассмотрение новых классов задач и пути их решения.
Суть розробки, основні результати:
The article shows the necessity of considering the separated flow of bodies, the spatial fluid flows, studies of their interaction, mutual influence, and in this regard, the consideration of new classes of problems and their solutions.
When designing hydraulic machines is the choice of the geometric dimensions and shape of flow parts, the account of mutual influence of elements with the goal of providing a high energy and dynamic characteristics is a challenging task. It is solved mainly with the use of simplified mathematical models of fluid flow.
Currently, the study of the structure of turbulent flow in the elements of the flow part is based on semi-empirical theories that use experimental information on the correlation of the turbulent velocity, and approximate ideas about the mechanism of turbulent viscosity. These theories have proved very valuable and helped to solve some important practical problems. However, the growing demands of practice fails to satisfy only the specified path.
When expressed above S. M. Belotserkovsky the hypothesis that the Reynolds stress can be determined on the basis of this decision in the framework of an environment (or an environment and the boundary layer), managed to close the averaged equations for viscous fluid.
