Research of Oscillations Processes in the Hydraulic System of Liquid Droplet Radiator

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The features of the functioning of the hydraulic system of the liquid droplet radiator are considered. The possibility of fluctuations in the flow rate of the working fluid is substantiated. The causes of the emergence and development of the corresponding instability are identified, and methods for its damping are proposed.

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作者简介

A. Safronov

Joint Stock Company State Scientific Center of the Russian Federation “Research Center named after M. V. Keldysh” (JSC State Scientific Center “Keldysh Center”)

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Email: a.a.safr@yandex.ru
俄罗斯联邦, Moscow

A. Koroteev

Joint Stock Company State Scientific Center of the Russian Federation “Research Center named after M. V. Keldysh” (JSC State Scientific Center “Keldysh Center”)

Email: a.a.safr@yandex.ru
俄罗斯联邦, Moscow

A. Grigoriev

Joint Stock Company State Scientific Center of the Russian Federation “Research Center named after M. V. Keldysh” (JSC State Scientific Center “Keldysh Center”)

Email: a.a.safr@yandex.ru
俄罗斯联邦, Moscow

N. Filatov

Joint Stock Company State Scientific Center of the Russian Federation “Research Center named after M. V. Keldysh” (JSC State Scientific Center “Keldysh Center”)

Email: a.a.safr@yandex.ru
俄罗斯联邦, Moscow

参考

  1. Tsuyoshi Totani, Takuya Kodama, Kensuke Watanabe, Kota Nanbu, Harunori Nagata, Isao Kudo. Numerical and experimental studies on circulation of working fluid in liquid droplet radiator. Acta Astronautica. 2006. V. 59. I. 1. P. 192–199.
  2. Коротеев А. А., Сафронов А. А., Филатов Н. И., Григорьев А. Л., Хлынов А. В. Исследование генераторов капель бескаркасных систем теплоотвода в космосе // Космическая техника и технологии. 2023. № 1 (40). С. 83–94.
  3. Сафронов А. А., Коротеев А. А., Хлынов А. В., Филатов Н. И., Григорьев А. Л. Особенности отключения генераторов капель в бескаркасных системах отвода низкопотенциального тепла в космосе // Известия Российской академии наук. Энергетика. 2021. № 4. С. 82–89.

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2. Fig. 1. (a) a block diagram of the KHI model (UKP is a drip flow catcher, GC is a droplet generator); (b) the dependence of the flow rate on the volume of liquid in the catcher

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3. Fig. 2. Dynamics of the operation of the hydraulic system of the CCI at different delay times: (a) τ = 0.1 s; (b) τ = 1.1 s; (c) τ = 1.99 s; (d) τ = 5.86 s

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4. Fig. 3. Explanatory flowchart of the KHI model: DFC – drip flow catcher; GPP – gear pumping pump; DG – drip generator

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5. Fig. 4. (a) flow rate and volume of liquid in the droplet catchers; (b) pressure change at the outlet of the droplet catcher

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6. Рис. 5. (а) расход и объем жидкости в уловителе; (б) изменение скорости капель

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7. Fig. 6. Explanatory flowchart of the KHI: DFC – drip flow catcher; PP – pumping pump; A – accumulator; DG – droplet generator

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8. Fig. 7. The dynamics of the CCI operation: (a) the volume of liquid in the droplet generator; (b), (c) the change in outlet pressure

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