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SUPERSOnIC DUSTY-GAS FLOWS WITH KnUDSEn EFFECT In InTERPHASE MOMEnTUM EXCHAnGE

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Acta Mechanica Sinica 2004年第5期20卷 465-470页

作者：王柏懿 A.n.OSIPTSOV L.A.EGOROVA V.I.sakharov LnM Institute of MechanicsChinese Academy of SciencesBeijing 100080China Institute of Mechanics Moscow State UniversityMoscow 119899Russia

On the basis of the two-continuum model of dilute gas-solid suspensions,the dynamic behavior of inertial particles in supersonic dusty-gas flows past a blunt body is studied for moderate Reynolds numbers,when the Knudsen effect in the interphase momentum exchange is significant. The limits of the inertial particle deposition regime in the space of governing parameters are found numerically under the assumption of the slip and free-molecule flow regimes around *** a model problem,the flow structure is obtained for a supersonic dusty-gas point-source flow colliding with a hypersonic flow of pure *** calculations performed using the full Lagrangian approach for the near-symmetry-axis region and the free-molecular flow regime around the particles reveal a multi-layer structure of the dispersed-phase density with a sharp accumulation of the particles in some thin regions between the bow and termination shock waves.

关键词： gas-solid suspension supersonic flow Knudsen effect particle inertia

Influence of the safety factor profile on the particle and heat transport in the Globus-M spherical tokamak

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Plasma Science and Technology 2019年第11期21卷 1-6页

作者： A YU TELnOVA G S KURSKIEV E O KISELEV n n BAKHAREV V K GUSEV n A KHROMOV S YU MEDVEDEV V B MIInAEV I V MIROSHnIKOV M I PATROV Yu V PETROV n V sakharov A D SLADKOMEDOVA P B SHCHEGOLEV V V SOLOKHA V A TOKAREV S YU TOLSTYAKOV E A TUKHMEnEVA Ioffe Institute Saint-Petersburg 194021Russia Keldysh Institute Russian Academy of SciencesMoscow 125047Russia nRC'Kurchatov Institute’ Moscow 123098Russia

The advanced tokamak scenario is a promising operation scenario for ITER and fusion neutron *** this scenario the minimum value of the safety factor in the center of the plasma exceeds *** the compact spherical tokamak Globus-M,the formation of such conditions is possible with neutral beam injection at the current ramp-up *** to the slower diffusion of current inside the plasma,a zone is formed with reduced heat and particle transport across the magnetic field,which affects the temperature and density profiles of the *** leads to the peaked density profile formation and improvement of the energy confinement *** achieve a high fraction of the bootstrap current,it is necessary to increase the plasma *** the same time,the maximum allowable pressure is limited to the normalized beta limit.

关键词： advanced tokamak mode transport analysis internal transport barriers

Development of Zeff diagnostic system on the Globus-M（M2） tokamak and the first experimental results

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Plasma Science and Technology 2019年第10期21卷 33-39页

作者： E A TUKHMEnEVA S Yu TOLSTYAKOV G S KURSKIEV V K GUSEV V B MInAEV Yu V PETROV n V sakharov A Yu TELnOVA n n BAKHAREV P B SHEGOLEV E O KISELEV Ioffe Institute

Studying the behavior of effective ion charge Zeff, which indicates the degree of pollution of plasma and can provide valuable information about many processes taking place in plasma, mechanisms of the releasing impurities, transport, etc is of great interest. This paper describes the development of the Zeff diagnostic system for the Globus-M2 tokamak. The effective ion charge is determined on the basis of measurements of the bremsstrahlung intensity and Thomson scattering data-Te and ne profiles. The results of the first Zeff measurements obtained for several discharges on the Globus-M tokamak are presented in this paper. The results have been validated by simulation using the ASTRA transport code for the same discharges, and it has demonstrated a good agreement with the experimental results.

关键词： tokamak effective ion charge magnetic confinement

超声速含灰气体钝体绕流的传热增强及颗粒惯性沉积效应

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自然科学进展 2002年第12期12卷 1253-1257页

作者： A.n.Osiptsov L.A.Egorova V.I.sakharov 王柏懿 Institute of Mechanics Lomonosov Moscow State UniversityMoscow 119899Russia 中国科学院力学研究所非线性力学国家重点实验室

研究了高、中等Reynolds数条件下,稀相含灰气体绕球体的定常超声速流动问题,对于物体迎风面前表面上发生颗粒沉积的情况,研究了由于颗粒引起的驻点热流增加,给出了传热增强的最大值,指明了驻点热流的增加取决于流动Re数、颗粒惯性参数... 详细信息

研究了高、中等Reynolds数条件下,稀相含灰气体绕球体的定常超声速流动问题,对于物体迎风面前表面上发生颗粒沉积的情况,研究了由于颗粒引起的驻点热流增加,给出了传热增强的最大值,指明了驻点热流的增加取决于流动Re数、颗粒惯性参数、气固比热之比以及物面温度等控制参数。

关键词：绕流传热增强颗粒惯性沉积效应超声速流动含灰气体钝体热传递增强机理

Chirping instabilities produced by a runaway electron beam at a spherical tokamak

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Plasma Science and Technology 2023年第7期25卷 19-24页

作者： I M BALACHEnKOV n n BAKHAREV V K GUSEV M V ILIASOVA E M KHILKEVICH P S KOREnEV A E KOnKOV V B MInAEV Yu V MITRIZHKIn M I PATROV Yu V PETROV n V sakharov A E SHEVELEV O M SKREKEL Ioffe Institute Saint-Petersburg 194021Russia Lomonosov Moscow State University Moscow 119991Russia

Two different types of MHD instabilities with rapidly chirping frequency were found to arise in the Globus-M2 spherical tokamak in substantially different frequency *** first type arises at frequencies of an order of 1 MHz in ohmic plasmas at relatively low density(n_(e))n a wide range of toroidal magnetic fields and plasma *** type of instability was identified as compressional Alfven waves,driven by electrons,accelerated during a sawtooth *** was found that the mode frequency is sweeping in time,according to the Berk-Breizman hole-clump nonlinear chirping *** second type of wave arises in a specific single-swing regime of the central solenoid current with a very narrow plasma column,when the plasma tends to decay at extremely low density(n_(e))nd,in fact,is an instability of the runaway electron *** exited modes cover the whole observed frequency range and are divided into several(two or three)frequency regions:approximately 0-30 MHz,60-120 MHz and sometimes 30-60 *** of the branches was also *** chirps are more rapid than for 1 MHz Alfven instability and follow an exponential *** paper,to our knowledge,is the first report of frequency chirping instabilities excited by accelerated electrons at a spherical tokamak.

关键词： Alfvén waves chirping instability spherical tokamak runaway electrons

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爆炸波及其绕流流场研究

爆炸波及其绕流流场研究

第十届全国激波与激波管学术讨论会

作者：杨辉岳茂雄黄为民乐嘉陵倪鸿礼 n.P.Mende A.B.Podlaskin V.A.sakharov 中国空气动力研究与发展中心 Ioffe Physicotechnical Institute Russian Academy of Sciences Politekhnicheskaya ul. 26St. Petersburg194021 Russia

本文介绍在爆炸波装置上对爆炸波及其绕流流场进行研究的详细情况。文章详细介绍了产生爆炸波的过程,采用光栅干涉技术获得了爆炸波轴对称喷流及其绕尖锥模型的绕流流场的光栅干涉图片,最后对爆炸波及其绕流流场进行了定量分析。

关键词：爆炸波尖锥模型密度场光栅干涉术流动显示

来源： cnki会议评论

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cnki会议

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萨哈罗夫、戈尔巴乔夫与削减核武器

物理 2017年第4期46卷 241-243页

作者：姬扬 Frank n.von Hippel 中国科学院半导体研究所

1987年,萨哈罗夫（Andrei sakharov）的公开发言促进了美苏的核裁军,销毁了数千枚弹道核导弹。1988年1月,萨哈罗夫和戈尔巴乔夫首次会晤。此前一年,他刚刚结束了七年的流放生活,从闭塞的高尔基回到了莫斯科。当时,美苏的核裁军陷入了僵... 详细信息

1987年,萨哈罗夫（Andrei sakharov）的公开发言促进了美苏的核裁军,销毁了数千枚弹道核导弹。1988年1月,萨哈罗夫和戈尔巴乔夫首次会晤。此前一年,他刚刚结束了七年的流放生活,从闭塞的高尔基回到了莫斯科。当时,美苏的核裁军陷入了僵局,戈尔巴乔夫坚持要求,美国承诺其弹道导弹防御（BMD）计划遵守1972年反弹道导弹（ABM）条约。

关键词：萨哈罗夫弹道导弹防御苏联人巴乔星球大战计划持不同政见者宙斯盾核军备竞赛核危机核战略