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First name, Middle name, Last name, Scientific degree, Scientific rank, Current position. Full and brief name of the organization, The organization address.Posokhin V.N. – doctor of technical sciences, professor E-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it 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 Varsegova E.V. – candidate of physical-mathematical sciences, associate professor 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 articleNumerical determination of the supply of air terminal characteristics
Abstract.Problem statement. In the calculation of air distribution data on the jet characteristics obtained experimentally are used. It is also considered that the distribution of the flow characteristics at the air nozzle outlet is equal or symmetrical, which is usually not the case. The methods of determining the kinematic and thermal coefficients of air nozzle outlets, based on the calculation of flow parameters using Fluent software are proposed. Methodology is illustrated in example of calculating the coefficients for the jet stream from slot orifice located in the wall of the duct among the other consistently placed slots. Taken into account the uneven velocity fields, static pressure, excess temperature in the supply orifice. Results. Within the proposed methodology defined kinematic coefficient of air nozzle outlet, profiles of longitudinal velocity in the cross-section of the jet, as well as the angle which amounts with a duct forming the direction of the jet expiration. The facts of the absence of longitudinal velocity profiles similarity in the jet cross-sections in the main region of the jet, the presence of excess static pressure field on expiry are determined. Conclusions. The computational definition of kinematic and thermal characteristics of the air terminals is possible. The results indicate the need to adjust the approaches to the analysis of turbulent jet flows.
Keywords.air nozzle outlet, kinematic and thermal coefficients, lateral orifice, the transit flow, the direction of the jet expiration, numerical method.
For citations:Posokhin V.N., Ziganshin A.M., Varsegova E.V. Numerical determination of the supply of air terminal characteristics // Izvestiya KGASU. 2017. №1(39) P.173-179.


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