Влияние типа и размера расчетных сеток на точность расчета течений в вихрекамерных нагнетателях
Loading...
Date
item.page.orcid
item.page.doi
item.page.thesis.degree.name
item.page.thesis.degree.level
item.page.thesis.degree.discipline
item.page.thesis.degree.department
item.page.thesis.degree.grantor
item.page.thesis.degree.advisor
item.page.thesis.degree.committeeMember
Journal Title
Journal ISSN
Volume Title
Publisher
НТУ "ХПИ"
Abstract
На основе численного расчета течений в вихрекамерном нагнетателе с помощью моделей URANS и DES произведено исследование влияния типа и размера расчетных сеток на точность расчета. Получено, что погрешность расчета перестает меняться при числе элементов более 6 млн. Для модели DES это значение больше в два раза. При использовании детальной сетки целесообразней использовать тетрагональную сетку.
On the basis of numerical calculation of fluid flow in vortex chamber supercharger by means of models URANS and DES research of grids type and size influence on accuracy of computation is made. It is received that the calculation error ceases to change at number of elements more than 6 million For DES method this value in 2 times is more. At flow modelling in vortex chamber supercharger with a detailed grid, owing to more difficult construction hexagonal grids, it is more expedient to use a tetragonal grid in the absence of special distinctions in an error. The estimation of errors is made by comparison with the integrated parameters of a flows received experimentally. As a result of comparison on kinematics parameters, such as distribution of pressure to a end cover of the vortex chamber is received that all considered models give about an identical error.
On the basis of numerical calculation of fluid flow in vortex chamber supercharger by means of models URANS and DES research of grids type and size influence on accuracy of computation is made. It is received that the calculation error ceases to change at number of elements more than 6 million For DES method this value in 2 times is more. At flow modelling in vortex chamber supercharger with a detailed grid, owing to more difficult construction hexagonal grids, it is more expedient to use a tetragonal grid in the absence of special distinctions in an error. The estimation of errors is made by comparison with the integrated parameters of a flows received experimentally. As a result of comparison on kinematics parameters, such as distribution of pressure to a end cover of the vortex chamber is received that all considered models give about an identical error.
Description
Citation
Сёмин Д. А. Влияние типа и размера расчетных сеток на точность расчета течений в вихрекамерных нагнетателях / Д. А. Сёмин, А. С. Роговой // Вісник Нац. техн. ун-ту "ХПІ" : зб. наук. пр. Темат. вип. : Гідравлічні машини та гідроагрегати = Bulletin of National Technical University "KhPI" : coll. of sci. papers. Ser. : Hydraulic machines and hydrounits. – Харків : НТУ "ХПІ", 2016. – № 41 (1213). – С. 70-77.