About the authors
| First name, Middle name, Last name, Scientific degree, Scientific rank, Current position. Full and brief name of the organization, The organization address. | Ziganshin A.M. – candidate of technical sciences, associate professor E-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it Gimadieva G.A. – student E-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it Batrova K.E. – student E-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it Kazan State University of Architecture and Engineering The organization address: 420043, Russia, Kazan, Zelenaya st., 1 |
| Title of the article | The pressure losses and the characteristics of the jet flowing through the middle lateral outlet |
| Abstract. | Problem statement. The paper presents the results of a numerical study of the flow in a channel with a middle lateral supply outlet, and a jet flowing out of this orifice. Despite the fact that this situation is often encountered in the construction of ducts for ventilation and air conditioning systems, data on pressure losses in such orifice and in the channel when air passing it are very scarce. The question of distribution of such jet is also not sufficiently studied. Results. With the use of the Fluent CFD software, the dependence of local resistance coefficient change at the exit from the lateral orifice, and when passing by it from the airflow ratio are obtained. The lengths of the upstream and downstream influence zones in the channel are found. All the main characteristics of an isothermal jet are determined: the kinematic coefficient of the supply outlet, the angle of inclination of the jet axis, and the analytical description of the longitudinal velocity profile in its cross sections. Conclusions. The use of the obtained dependences allows to clarify the existing methods for calculating air distribution, as well as aerodynamic calculation of ventilation and air conditioning systems. |
| Keywords. | numerical simulation, middle lateral supply outlet, local resistance coefficient, jet flow angle, velocity profile, kinematic coefficient of the supply outlet, impact zone. |
| For citations: | Ziganshin A.M., Gimadieva G.A., Batrova K.E. The pressure losses and the characteristics of the jet flowing through the middle lateral outlet // Izvestiya KGASU. 2017. №4(42) P.257-265. |
