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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
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Применить Всего найдено 8. Отображено 8.
23-06-2023 дата публикации

Method and device for calculating friction heat flow of turbulent boundary layer of ablated particle wall and medium

Номер: CN116305535A
Автор: LI QING, YUAN XIANXU, ZHOU QINGQING, FU YALU, YU MING, LI BO, LIU PENGXIN
Принадлежит:

The invention relates to the technical field of aircrafts, and discloses an ablated particle wall turbulence boundary layer friction heat flow calculation method and device, and a medium, and the method comprises the steps: obtaining particle two-phase wall turbulence direct numerical simulation data; according to particle two-phase wall turbulence direct numerical simulation data, respectively calculating each sub-effect corresponding to friction decomposition and each sub-effect corresponding to heat flow decomposition; carrying out MPI reduction operation summation on each sub-effect corresponding to the friction decomposition to obtain the friction of the turbulent boundary layer of the ablated particle wall; and performing MPI reduction operation summation on the sub-effects corresponding to the heat flow decomposition to obtain the heat flow of the turbulent boundary layer of the ablated particle wall. The method is high in compatibility and can be coupled with any compressible particle ...

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Номер записи: 1
06-06-2023 дата публикации

Calculation method and device for ablative particle compressible turbulence standard model and medium

Номер: CN116227314A
Автор: LI QING, YUAN XIANXU, YU MING, ZHOU QINGQING, LIU PENGXIN, FU YALU
Принадлежит:

The invention discloses an ablative particle compressible turbulence standard model calculation method and device and a medium, and belongs to the field of compressible turbulence, and the method comprises the steps: obtaining a target velocity spectrum vector of the compressible turbulence based on an energy equation according to an initial parameter of the compressible turbulence; fourier spectrum inverse transformation is carried out on the target velocity spectrum vector to obtain a target physical space velocity vector of compressible turbulence; obtaining original data of compressible turbulence according to the target physical space velocity vector; the original data comprises a density variable, a temperature variable and a velocity vector which change along with time; according to the original data of the compressible turbulence, obtaining the statistical magnitude of the compressible turbulence; and according to the statistics of the compressible turbulence, determining the friction ...

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Номер записи: 2
11-04-2023 дата публикации

Calculation method and device for ablative particle multi-physical effect and medium

Номер: CN115952606A
Автор: LI QING, YUAN XIANXU, SU HONGMIN, LI BO, ZHOU QINGQING, YU MING, FU YALU, LIU PENGXIN
Принадлежит:

The invention relates to the technical field of aircrafts, and discloses a calculation method and device for the multi-physical effect of ablated particles and a medium, and the method comprises the steps: obtaining equivalent inertia terms induced by the multi-physical effect; calculating a multi-physical particle dynamics process according to the particle slippage resistance item and the equivalent inertia items induced by the multiple physical effects; performing dimensionless processing on the radiation heat exchange equation of the spherical particles in any sampling unit volume to obtain a dimensionless radiation heat exchange equation; and calculating the thermodynamic process of the thermal radiation particles by adopting a dimensionless radiation heat exchange equation. The method can reflect a complex physical process in an extreme mechanical environment, ensures that numerical simulation can re-ablate an original physical appearance, has engineering interactivity of an ablation ...

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Номер записи: 3
11-04-2023 дата публикации

Ablation particle wall turbulence statistical moment parallel computing method and device and medium

Номер: CN115952603A
Автор: LI QING, YUAN XIANXU, YU MING, LI BO, SU HONGMIN, FU YALU, ZHOU QINGQING
Принадлежит:

The invention relates to the technical field of aircrafts, and discloses an ablated particle wall turbulence statistical moment parallel computing method and device and a medium, and the method comprises the steps: obtaining particle two-phase wall turbulence direct numerical simulation data; according to particle two-phase turbulence direct numerical simulation data, a turbulence statistical moment and a particle statistical moment are respectively obtained in a parallel computing mode. The particle wall turbulence statistical moment is obtained through rapid and efficient parallel calculation, compatibility is high, the method can be coupled with a direct numerical simulation result generated by any type of particle two-phase turbulence software to calculate the statistical moment, key information is provided for developing a sub-grid model, and the blank in the field is filled up.

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Номер записи: 4
11-04-2023 дата публикации

Numerical simulation method and equipment for aperiodic dynamic process of ablated particles and medium

Номер: CN115952605A
Автор: LI QING, YUAN XIANXU, FU YALU, ZHOU QINGQING, LI BO, SU HONGMIN, YU MING, LIU PENGXIN
Принадлежит:

The invention relates to the technical field of aircrafts, and discloses a numerical simulation method and device for the aperiodic dynamic process of ablated particles and a medium, and the method comprises the steps: reading particle information from a dynamic linked list array; deleting particle information leaving the boundary of the numerical simulation calculation domain; and dynamically allocating the memory to the dynamic linked list array of the wall surface, so that the particles are re-released from the wall surface. Therefore, the method can be coupled with a two-phase wall turbulence mode of any compressible particle, when the particle leaves the boundary of the numerical simulation calculation domain, the dynamic linked list array is adopted to delete the leaving particle memory, and the particle memory is redistributed, so that the particle can be continuously released from the wall surface; therefore, the aperiodic boundary conditions of the ablative particles in the boundary ...

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Номер записи: 5
06-06-2023 дата публикации

Immersion boundary virtual grid embedding method, device, equipment and medium

Номер: CN116229021A
Автор: YU MING, FU YALU, LIU PENGXIN, SU HONGMIN, YUAN XIANXU
Принадлежит:

The invention discloses an immersion boundary virtual grid embedding method and device, equipment and a medium, and relates to the field of fluid mechanics, and the method comprises the steps: obtaining a to-be-satisfied preset boundary condition on a flow field boundary, and dividing an Euler grid near the flow field boundary according to a preset grid type division method to obtain a divided grid; determining a first conservation quantity corresponding to a solid grid point in the divided grid based on a preset boundary condition, and determining a second conservation quantity corresponding to a virtual grid point in the divided grid by using a linear interpolation method; and adding volume force items to the virtual grid points and the solid grid points by using an immersion boundary method, and carrying out numerical calculation so as to embed the first conservation quantity and the second conservation quantity into the solid grid points and the virtual grid points respectively. The ...

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Номер записи: 6
18-04-2023 дата публикации

Ablation particle two-phase wall turbulence numerical simulation parallel computing method, device and medium

Номер: CN115982860A
Автор: LI QING, YUAN XIANXU, LI BO, SU HONGMIN, YU MING, ZHOU QINGQING, FU YALU
Принадлежит:

The invention relates to the technical field of aircrafts, and discloses an ablative particle two-phase wall turbulence numerical simulation parallel computing method and device and a medium, and the method comprises the steps: calling a fluid solver to calculate flow field information in each sub-time step; reading particle information from the dynamic linked list array one by one by adopting a dynamic array; calling a single particle solver to update the particle information read by the dynamic array, and updating the updated particle information to the dynamic linked list array one by one; and after all the particles in the dynamic linked list array are traversed, entering the next sub-time step until the time cycle is completed, and outputting all information of the flow field and the particles. Therefore, direct numerical simulation of the two-phase flow of the compressible ablative particles can be accurately realized, the problem that direct numerical simulation of the two-phase ...

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Номер записи: 7
23-06-2023 дата публикации

Phase modifier dynamic reactive power control method based on converter bus voltage stability

Номер: CN116316663A
Автор: LI LINGFANG, CHEN YIXUAN, YOU GUANGZENG, HUANG YING, SI DAJUN, WANG GUOTENG, HE YE, SHEN XUE, CHEN SHUMIN, ZHENG CHAOMING, FU YALU
Принадлежит:

The invention discloses a phase modifier dynamic reactive power control method based on commutation bus voltage stability. The method comprises the following steps: controlling an LCC commutation bus through a phase modifier; calculating a reactive power regulation factor of the phase modifier to the self access bus; screening out a phase modifier which has an obvious effect on the voltage stability of the direct-current bus; and additional control of dynamic reactive power control of the phase modifier. According to the converter bus voltage stability-based phase modifier dynamic reactive power control method provided by the invention, the degree of influence between the phase modifier and the direct current system is determined, the phase modifier having great influence on the direct current system is screened out, and then an additional control strategy is given; according to the method, the phase modifier can be effectively utilized to improve the voltage stability of the current conversion ...

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Номер записи: 8