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. | Akhmadiev Fail Gabdulbarovich doctor of technical sciences, professor E-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it Malanichev Igor Vyacheslavovich candidate of technical 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 article | Reducing of pressure losses in ventilation ducts based on the solution of the structural and parametric optimization problem |
| Abstract. | Problem statement. The aim of the work is to evaluate the possibility of applying structural-parametric optimization methods to solve the problem of reducing pressure losses in ventilation ducts during the design of ventilation systems. Results. The main results of the study are the development of an approach to solving structural and parametric optimization problems in the process of designing ventilation systems based on free software. At the first stage, the problem of determining the geometric properties of the flow region that are optimal in accordance with the specified criterion as lowest pressure loss is formulated as nonparametric, where the structural variables are the porosity of the fictitious medium that impedes the flow, the distribution of which determines the geometry of the flow region. The solution of the nonparametric problem is carried out by the conjugate method. At the second stage, the resulting solution is parameterized with a small number of structural variables, which are the coordinates of the control points of the splines that form the contours of the flow region. The solution of the parametric formulation of the structural optimization problem makes it possible to more accurately take into account the effects of turbulence, especially in the near-wall regions of the flow. Genetic algorithm is used as an optimization method. The results of test calculations for optimization of the ventilation duct shape can reduce pressure losses by 4-6 times. Conclusions. The significance of the obtained results for the construction industry is the confirmed effectiveness of the structural and parametric optimization for solving the problems of designing ventilation systems with improved aerodynamic characteristics. |
| Keywords. | pressure loss, ventilation ducts, structural and parametric optimization. |
| For citations: | Akhmadiev F.G., Malanichev I.V. Reducing of pressure losses in ventilation ducts based on the solution of the structural and parametric optimization problem // Izvestiya KGASU. 2019. №4(50) P.271-278. |
