- PII
- 10.31857/S0207401X24090109-1
- DOI
- 10.31857/S0207401X24090109
- Publication type
- Article
- Status
- Published
- Authors
- Volume/ Edition
- Volume 43 / Issue number 9
- Pages
- 84-94
- Abstract
- A numerical study of the behavior of disordered perturbations of density, velocity and pressure in the problem of flow around a stationary solid sphere is carried out. Regular equations of multimoment hydrodynamics supplemented with stochastic components are used for the study. The statistical properties of stochastic components are identified with the statistical properties of disordered perturbations arising in the incoming flow due to external influence. It was found that the loss of stability is accompanied by the accumulation of disordered perturbations of density, velocity and pressure in the wake behind the sphere. It is shown that high values of the turbulence coefficient provide a significant accumulation of disordered disturbances, which leads to a strong distortion of the laminar flow pattern. It is found that high values of pressure and density pulsation coefficients provide an equally significant accumulation of disordered perturbations in the pressure and density.
- Keywords
- неупорядоченные возмущения неустойчивость турбулентность
- Date of publication
- 14.09.2025
- Year of publication
- 2025
- Number of purchasers
- 0
- Views
- 2
References
- 1. Kiselev A.Ph., Lebed I.V. // Chaos, Solitons, Fractals 2021.V.142. № 110491.
- 2. Киселев А.Ф., Лебедь И.В. // Хим. физика. 2021. Т. 40. № 1. С. 79.
- 3. Киселев А.Ф., Лебедь И.В. // Хим. физика. 2021. Т. 40. № 6. С. 80
- 4. Lebed I.V. // Physica. A. 2019. V. 515. P. 715.
- 5. Lebed I.V. // Physica. A. 2019. V. 524. P. 325.
- 6. Лебедь И.В. // Хим. физика. 1997. Т. 16. № 7. С. 72.
- 7. Lebed I.V. The foundations of multimoment hydrodynamics, Part 1: ideas, methods and equations. N.Y.: Nova Sci. Publ., 2018.
- 8. Лебедь И.В. // Хим. физика. 2022. Т. 41. № 4. С. 81.
- 9. Лебедь И.В. // Хим. физика. 2014. Т. 33. № 4. С. 70.
- 10. Лебедь И.В. // Хим. физика. 2022. Т. 41. № 1. С. 77.
- 11. Лойцянский Л.Г. Механика жидкости и газа. М.: Гостехтеоретиздат, 1957.
- 12. Sakamoto H., Haniu H. // J. Fluid Mech. 1995. V. 287. P.151.
- 13. Филиппов В.М. // Уч. записки ЦАГИ. 2008. Т. XXXIX. № 1–2. С. 68.
