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. | Gumerova L.V. – design-engineer E-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it JSC Space Rocket Centre «Progress» The organization address: 443009, Russia, Samara, Zemetsa st., 18 Gumerov A.V. – candidate of technical sciences, senior lecturer Е-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 strength that occurs when driving vortex filament around a circular cylinder |
| Abstract. | In this paper we investigate the motion of free vortex filaments around a stationary circular cylinder. Tightness of the cylinder surface is provided by the placement of sources in the neighborhood of the points of the inner cylinder circuit. The power sources are determined by the condition of zero normal velocity in the circuit test points. This calculation model, in contrast to the method of discrete vortices does not introduce distortion tangential speed of the cylinder surface. The rate of flow out of the cylinder calculated as by the complex potential of the potentials of the external and the inversion of the vortices. Thus in one case of the integrated capacity potential entered the central vortex, and no other. We construct the velocity field for these three cases. Based on a comparison of fields it is deemed to be the introduction of the complex potential flow capacity of the central vortex for real motion of the vortex filament in an ideal fluid. Determined according to the total power per cylinder of the vortex filament, as the integration of surface pressure and pulse method at three different intensities of the central vortex. Calculations indicate the presence of a significant impact on the value of the central vortex of force. |
| Keywords. | the theorem of a circle, source, impermeability surface, unsteady flow, velocity field, a vortex in a fixed point. |
| For citations: | Gumerova L.V., Gumerov A.V. The strength that occurs when driving vortex filament around a circular cylinder // Izvestiya KGASU. 2016. №2(36) P.265--1. |
