发布求助
文献互助 智能选刊 最新文献

Fluid Dynamics最新文献

筛选
英文 中文
Heat-Flux Measurement by Sensors Based on Anisotropic Thermoelements in a Gas-Dynamics Experiment Shock Tubes 基于各向异性热元的气体动力学实验激波管热流密度传感器测量
IF 0.9 4区 工程技术
Fluid Dynamics Pub Date : 2023-08-30 DOI: 10.1134/S0015462823601092
P. A. Popov, V. A. Sakharov, T. A. Lapushkina, S. A. Poniaev, N. A. Monakhov
{"title":"Heat-Flux Measurement by Sensors Based on Anisotropic Thermoelements in a Gas-Dynamics Experiment Shock Tubes","authors":"P. A. Popov,&nbsp;V. A. Sakharov,&nbsp;T. A. Lapushkina,&nbsp;S. A. Poniaev,&nbsp;N. A. Monakhov","doi":"10.1134/S0015462823601092","DOIUrl":"10.1134/S0015462823601092","url":null,"abstract":"<p>We present the results of measuring the heat flux using sensors based on anisotropic thermoelements and a thin-film resistance sensor for cases of shock-wave reflection from the end of a shock tube and an external supersonic gas flow around the model. The obtained data demonstrate that such sensors can be applied in gas-dynamics experiments in a wide range of characteristic times.</p>","PeriodicalId":560,"journal":{"name":"Fluid Dynamics","volume":"58 4","pages":"779 - 786"},"PeriodicalIF":0.9,"publicationDate":"2023-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"5142706","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Dusty Gas Flow past Bodies under Scattering of Rebounded Particles 尘埃气体在反弹粒子的散射下流过物体
IF 0.9 4区 工程技术
Fluid Dynamics Pub Date : 2023-08-30 DOI: 10.1134/S0015462823600487
S. V. Panfilov, D. A. Romanyuk, Yu. M. Tsirkunov
{"title":"Dusty Gas Flow past Bodies under Scattering of Rebounded Particles","authors":"S. V. Panfilov,&nbsp;D. A. Romanyuk,&nbsp;Yu. M. Tsirkunov","doi":"10.1134/S0015462823600487","DOIUrl":"10.1134/S0015462823600487","url":null,"abstract":"<p>Two-phase gas-particle flow over a flat plate of finite thickness in a channel at a high subsonic velocity and supersonic transverse flow past a cylinder are considered. The leading edge of the plate is wedge-shaped or represents a smooth bluntness of constant radius. The wedge surface and the front bluntness are specified both smooth and rough. The roughness is modeled by a two-dimensional profile based on an experiment. Spherical particles and a mixture of particles in the form of ellipsoids of revolution, rectangular prisms, prisms with flat-cut vertices, and tetrahedrons are considered. The parameters of each of the forms vary. The impact interaction model proposed earlier and consistent with the experimental data on the coefficients of restitution of the center-of-mass velocity is used to determine the translational and rotational velocities of non-spherical particles after rebound. Along with monosized particles, a dispersed phase with a spread of particles in size is considered. The role of the studied factors of random nature which affect the flow pattern and the dispersed phase parameters is found.</p>","PeriodicalId":560,"journal":{"name":"Fluid Dynamics","volume":"58 4","pages":"569 - 585"},"PeriodicalIF":0.9,"publicationDate":"2023-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1134/S0015462823600487.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"5141552","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Calculation of the Optimal Injected-Gas Compositions to Increase the Oil Recovery of Reservoirs 提高油藏采收率的最佳注气成分计算
IF 0.9 4区 工程技术
Fluid Dynamics Pub Date : 2023-08-30 DOI: 10.1134/S0015462823601031
A. A. Chernova, A. A. Afanasyev
{"title":"Calculation of the Optimal Injected-Gas Compositions to Increase the Oil Recovery of Reservoirs","authors":"A. A. Chernova,&nbsp;A. A. Afanasyev","doi":"10.1134/S0015462823601031","DOIUrl":"10.1134/S0015462823601031","url":null,"abstract":"<p>The problem of optimizing water and gas injection to displace heavier oil components used in fuel production is solved. Several initial oil compositions in the reservoir and various mixtures of injected substances are considered. Numerical optimization is automated in such a way that for a fixed amount of injected pore volumes, the composition of the injected mixture is automatically changed and the most favorable composition is selected, which increases the oil-recovery factor. It is shown that for various initial oil compositions, the displacement efficiency, depending on the amount of injected pore volumes of more valuable components, qualitatively coincides. In this regard, optimization of the injection of a mixture consisting of four components is studied for one of the initial compositions. The processes occurring during injection of the optimal composition are calculated on a finer grid.</p>","PeriodicalId":560,"journal":{"name":"Fluid Dynamics","volume":"58 4","pages":"723 - 730"},"PeriodicalIF":0.9,"publicationDate":"2023-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"5139929","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Investigation of the Accuracy of Simulating Convective Heat Transfer in Subsonic Jets of Dissociated Air in a RF Plasmatron 射频等离子体中分离空气亚音速射流对流换热模拟精度的研究
IF 0.9 4区 工程技术
Fluid Dynamics Pub Date : 2023-08-30 DOI: 10.1134/S0015462823600967
S. A. Vasil’evskii, A. F. Kolesnikov, V. I. Sakharov
{"title":"Investigation of the Accuracy of Simulating Convective Heat Transfer in Subsonic Jets of Dissociated Air in a RF Plasmatron","authors":"S. A. Vasil’evskii,&nbsp;A. F. Kolesnikov,&nbsp;V. I. Sakharov","doi":"10.1134/S0015462823600967","DOIUrl":"10.1134/S0015462823600967","url":null,"abstract":"<p>Numerical estimates are performed on the correspondence of heat fluxes at stagnation points when subsonic high-enthalpy air jets flow around a model in a RF plasmatron and when blunt bodies enter Earth’s atmosphere at supersonic speed, when the parameters of these qualitatively different flows are related by local simulation conditions. For cold walls, the similarity of the normalized heat fluxes in the entire range of the effective catalytic-recombination coefficient of atoms is confirmed when the simulation conditions are met. By calculations for the conditions of experiments using a RF plasmatron and for the corresponding parameters of entrance into Earth’s atmosphere, it is found that the radiation-equilibrium wall temperature is simulated with good accuracy in subsonic high-enthalpy air jets for highly catalytic surfaces and with satisfactory accuracy for low-catalytic ones.</p>","PeriodicalId":560,"journal":{"name":"Fluid Dynamics","volume":"58 4","pages":"811 - 819"},"PeriodicalIF":0.9,"publicationDate":"2023-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"5142710","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Experimental Investigation of the Structure of Disturbances from Two Pulsed Sources in the Flat-Plate Supersonic Boundary Layer 平板超音速边界层中两个脉冲源扰动结构的实验研究
IF 0.9 4区 工程技术
Fluid Dynamics Pub Date : 2023-08-30 DOI: 10.1134/S0015462823600621
L. V. Afanasev, Yu. G. Yermolaev, A. D. Kosinov, V. L. Kocharin, N. V. Semionov, A. A. Yatskikh
{"title":"Experimental Investigation of the Structure of Disturbances from Two Pulsed Sources in the Flat-Plate Supersonic Boundary Layer","authors":"L. V. Afanasev,&nbsp;Yu. G. Yermolaev,&nbsp;A. D. Kosinov,&nbsp;V. L. Kocharin,&nbsp;N. V. Semionov,&nbsp;A. A. Yatskikh","doi":"10.1134/S0015462823600621","DOIUrl":"10.1134/S0015462823600621","url":null,"abstract":"<p>The work is devoted to the development of a new experimental method for entering controlled disturbances with a given frequency-wave structure into a supersonic boundary layer. Experimental data on the formation of disturbances from two pulsed sources (pulsed glow discharge) in the laminar flat-plate boundary layer at the Mach number equal to 2 are given. The experiments were carried out in the T-325 wind tunnel of ITAM SB RAS. The localized sources were spaced out at the same distance from the leading edge of the plate at 6 mm from each other spanwise. Flow pulsations were measured using a hot-wire probe of constant temperature anemometer, the signal was recorded synchronously with ignition of the discharges. This made it possible to distinguish the pulsations from the discharges against the background of random uncontrolled “natural” pulsations of the boundary layer. The spatial-temporal and frequency-wave structure of the generated disturbances from a single or two discharges, operating synchronously or with a time delay, are analyzed. It is found that the maximum difference in the structure of disturbances from one and two sources is observed in the central region, while at the side boundaries of the disturbances, the pulsations are close in all considered cases. In the wave spectra of disturbances from two discharges, nodes and antinodes are formed. Their position is determined by the distance between the sources and the time delay in their operation.</p>","PeriodicalId":560,"journal":{"name":"Fluid Dynamics","volume":"58 4","pages":"532 - 541"},"PeriodicalIF":0.9,"publicationDate":"2023-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1134/S0015462823600621.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"5146465","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Formation of Three-Dimensional Internal Waves behind a Body in Motion in a Stratified Viscous Fluid 层状粘性流体中运动物体背后三维内波的形成
IF 0.9 4区 工程技术
Fluid Dynamics Pub Date : 2023-08-30 DOI: 10.1134/S0015462823600578
P. V. Matyushin
{"title":"Formation of Three-Dimensional Internal Waves behind a Body in Motion in a Stratified Viscous Fluid","authors":"P. V. Matyushin","doi":"10.1134/S0015462823600578","DOIUrl":"10.1134/S0015462823600578","url":null,"abstract":"<p>A uniform motion of a disk in horizontal direction along its axis of symmetry in a stratified viscous fluid at rest is studied. The disk generates three-dimensional internal gravity waves occupying the entire volume between the disk and the location of its start. The waves are observed using two-color, beta-plus visualization of the vortex flow structure calculated within the framework of the system of Navier–Stokes equations in the Boussinesq approximation. The results of the study complete considerably the earlier-published mechanism of the formation of half-waves above the axis of symmetry of the disk, where emphasis was placed on the periodic process of generation of deformed vortex rings above the location of the disk start. Their generation is due to gravitation and shear instabilities, when the left semi-ring is transformed into a half-wave of depressions or crests, while the right one vanishes with time. In this paper it is established that the left parts of the right odd semi-rings are transformed into the axial parts of the crest half-waves.</p>","PeriodicalId":560,"journal":{"name":"Fluid Dynamics","volume":"58 4","pages":"621 - 633"},"PeriodicalIF":0.9,"publicationDate":"2023-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"5141551","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Calculations of Compression of a Spherical Layered System by Shock Waves Taking into Account the Transfer of Thermal Radiation in the Kinetic Model 在动力学模型中考虑热辐射传递的球面层状系统激波压缩计算
IF 0.9 4区 工程技术
Fluid Dynamics Pub Date : 2023-08-30 DOI: 10.1134/S0015462823600475
S. A. Grabovenskaya, V. V. Zav’yalov, A. A. Shestakov
{"title":"Calculations of Compression of a Spherical Layered System by Shock Waves Taking into Account the Transfer of Thermal Radiation in the Kinetic Model","authors":"S. A. Grabovenskaya,&nbsp;V. V. Zav’yalov,&nbsp;A. A. Shestakov","doi":"10.1134/S0015462823600475","DOIUrl":"10.1134/S0015462823600475","url":null,"abstract":"<p>At present, numerical simulation is the main, and often the only, tool for detailed description of some physical phenomena in the study of the processes of material compression by shock waves. The study of the behavior of shock and rarefaction waves on the simplest model tests helps in the analysis of more complex calculations, for example, problems of inertial thermonuclear fusion on laser facilities. The paper considers comparative calculations of a test problem that simulates compression of a spherical layered system consisting of two substances by shock waves.</p>","PeriodicalId":560,"journal":{"name":"Fluid Dynamics","volume":"58 4","pages":"511 - 519"},"PeriodicalIF":0.9,"publicationDate":"2023-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"5142523","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Resonance Impact of a Periodic Sequence of Plasma Actuators in Flow Control in a Swept-Wing Boundary Layer 等离子体驱动器周期序列对后掠翼边界层流动控制的共振影响
IF 0.9 4区 工程技术
Fluid Dynamics Pub Date : 2023-08-30 DOI: 10.1134/S0015462823600700
S. V. Manuilovich
{"title":"Resonance Impact of a Periodic Sequence of Plasma Actuators in Flow Control in a Swept-Wing Boundary Layer","authors":"S. V. Manuilovich","doi":"10.1134/S0015462823600700","DOIUrl":"10.1134/S0015462823600700","url":null,"abstract":"<p>The process of flow control in the swept-wing boundary layer using a number of plasma actuators mounted at an angle to the leading edge is theoretically studied. The resonance response of the controlled flow is investigated when the angle of inclination of the actuators is close to the angle of inclination of the stationary vortices of cross-flow instability. The calculation of the controlled flow is carried out within the framework of the parabolic system of Navier–Stokes equations. The stability characteristics of periodic flows formed by the action of a control bulk force are calculated.</p>","PeriodicalId":560,"journal":{"name":"Fluid Dynamics","volume":"58 4","pages":"542 - 554"},"PeriodicalIF":0.9,"publicationDate":"2023-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"5142526","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Distinctive Features of Plume Formation on Collision of Two Laminar Gas Jets 两个层流气体射流碰撞时羽流形成的独特特征
IF 0.9 4区 工程技术
Fluid Dynamics Pub Date : 2023-08-30 DOI: 10.1134/S0015462823700076
V. V. Kozlov, Yu. A. Litvinenko, M. M. Katasonov, D. V. Sarychev, A. G. Shmakov
{"title":"Distinctive Features of Plume Formation on Collision of Two Laminar Gas Jets","authors":"V. V. Kozlov,&nbsp;Yu. A. Litvinenko,&nbsp;M. M. Katasonov,&nbsp;D. V. Sarychev,&nbsp;A. G. Shmakov","doi":"10.1134/S0015462823700076","DOIUrl":"10.1134/S0015462823700076","url":null,"abstract":"<p>The results of an investigation of the interaction between two colliding axisymmetric laminar microjets of propane-butane mixture with and without diffusion combustion are presented. The gas mixture components flow out through round tubes at the same velocities. In the course of the experiments the lateral position of the tubes with respect to each other was varied with conservation of the angle between them. The distinctive features of the resulting jet formation are established as functions of the transverse position of the tubes. If the tubes lie in the same plane, then the resulting jet is formed in the plane orthogonal to them. This process can be observable in the case of the interaction between the jets both with and without flame. With increase in the jet outflow velocity a region of local discontinuity of the flame front is found to exist.</p>","PeriodicalId":560,"journal":{"name":"Fluid Dynamics","volume":"58 4","pages":"634 - 639"},"PeriodicalIF":0.9,"publicationDate":"2023-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"5146457","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Investigation of Heat Transfer Regimes in Subsonic Dissociated-Nitrogen Jets of a High-Frequency Induction Plasmatron under Additional Surface Heating by Laser Radiation 激光附加表面加热下高频感应等离子体亚音速解离氮射流传热特性研究
IF 0.9 4区 工程技术
Fluid Dynamics Pub Date : 2023-08-30 DOI: 10.1134/S0015462823600499
S. A. Vasil’evskii, S. S. Galkin, A. F. Kolesnikov, M. A. Kotov, I. V. Lukomskii, N. G. Solovyev, E. S. Tepteeva, A. V. Chaplygin, A. N. Shemyakin, M. Yu. Yakimov
{"title":"Investigation of Heat Transfer Regimes in Subsonic Dissociated-Nitrogen Jets of a High-Frequency Induction Plasmatron under Additional Surface Heating by Laser Radiation","authors":"S. A. Vasil’evskii,&nbsp;S. S. Galkin,&nbsp;A. F. Kolesnikov,&nbsp;M. A. Kotov,&nbsp;I. V. Lukomskii,&nbsp;N. G. Solovyev,&nbsp;E. S. Tepteeva,&nbsp;A. V. Chaplygin,&nbsp;A. N. Shemyakin,&nbsp;M. Yu. Yakimov","doi":"10.1134/S0015462823600499","DOIUrl":"10.1134/S0015462823600499","url":null,"abstract":"<p>The heat transfer to a cylindrical water-cooled copper model was experimentally investigated in an induction VGU-4 high-frequency (HF) plasmatron of the Institute for Problems in Mechanics of the Russian Academy of Sciences. The model, 30 mm in diameter, equipped with a calorimetric transducer with a heat-adsorbing graphite surface, 13.8 mm in diameter, was exposed to the surface heating in the combined regime by nitrogen plasma and laser radiation and in the cases of the heating with only laser radiation or a nitrogen plasma jet. The experiments in the HF-plasmatron jets were performed at the pressure in the setup low-pressure chamber <i>p</i> = 1 × 10<sup>4</sup> Pa, nitrogen mass flow rate <i>G</i> = 2.4 g/s, and the plasmatron HF-generator anode power <i>N</i><sub>a.p.</sub> = 22 kW. It is established that in the chosen experimental regimes the dissociated-nitrogen jet and the high-frequency induction discharge do not produce a considerable effect on the laser beam passing through them. The values of the heat flux density are obtained as functions of the laser radiation power delivered. The subsonic nitrogen plasma flow in the quartz discharge channel and in the low-pressure chamber of the VGU-4 setup is numerically modeled under the experimental conditions basing on the solution of the complete Navier–Stokes equations using the Patankar–Spalding method.</p>","PeriodicalId":560,"journal":{"name":"Fluid Dynamics","volume":"58 4","pages":"649 - 658"},"PeriodicalIF":0.9,"publicationDate":"2023-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"5139922","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
首页 上一页 下一页 尾页
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：481959085
Book学术官方微信