发布求助
文献互助 智能选刊 最新文献

Multiphase Systems最新文献

筛选
英文 中文
The theory of injection of a hydrate-forming gas into a snow massif saturated with the same gas 将形成水合物的气体注入饱和了水合物气体的雪堆的理论
Multiphase Systems Pub Date : 2018-12-10 DOI: 10.21662/MFS2018.4.013
A. Chiglintseva, V. Shagapov
{"title":"The theory of injection of a hydrate-forming gas into a snow massif saturated with the same gas","authors":"A. Chiglintseva, V. Shagapov","doi":"10.21662/MFS2018.4.013","DOIUrl":"https://doi.org/10.21662/MFS2018.4.013","url":null,"abstract":"The mathematical model of the process of gas hydrate formation during gas injection into a snow massif, saturated with the same gas, is constructed. In axisymmetric formulation, analytical solutions are obtained for the distribution of temperature fields, pressures and phase saturations. It is shown that the appearance of various characteristic zones in a snow massif depends on the initial state of the gas–snow system, determined by temperature and pressure, and the mass flow rate of the injected gas. It has been established that an increase in the intensity of gas injection (gas flow rate) leads to an increase in both the length of the bulk zone of hydrate formation and the increase in the fraction of hydrate at the boundary separating the near and intermediate zones.","PeriodicalId":309215,"journal":{"name":"Multiphase Systems","volume":"57 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121738641","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Study the dynamics of hollow jet formation under vapor outflow from the supercritical state 研究了超临界蒸汽流出条件下空心射流形成的动力学
Multiphase Systems Pub Date : 2018-11-30 DOI: 10.21662/mfs2018.4.011
R. Bolotnova
{"title":"Study the dynamics of hollow jet formation under vapor outflow from the supercritical state","authors":"R. Bolotnova","doi":"10.21662/mfs2018.4.011","DOIUrl":"https://doi.org/10.21662/mfs2018.4.011","url":null,"abstract":"The features of the unsteady process of a cavity formation inside the jet at a sudden outflow of water vapor through a thin nozzle from a pressure vessel, initially in a supercritical state, are studied. A numerical study was carried out by using the sonicFoam solver of the OpenFOAM library with the Peng-Robinson equation of state in a two-dimensional axisymmetric approximation. Visualization of the obtained solutions is presented in the form of pictures dynamics for fields of velocities and temperatures. It is shown that the mode of formation and maintenance of the cavity inside the jet is supported more than 100 μs from the beginning of the expiration process.","PeriodicalId":309215,"journal":{"name":"Multiphase Systems","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127106530","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
The study of acoustic scattering from a single sound-permeable sphere 对单个透声球的声散射的研究
Multiphase Systems Pub Date : 2018-11-30 DOI: 10.21662/MFS2018.4.012
E. Nasibullaeva
{"title":"The study of acoustic scattering from a single sound-permeable sphere","authors":"E. Nasibullaeva","doi":"10.21662/MFS2018.4.012","DOIUrl":"https://doi.org/10.21662/MFS2018.4.012","url":null,"abstract":"The paper presents a generalized mathematical model and numerical investigation of the problem of acoustic scattering from a single sound-permeable sphere during the passage of two types of waves - spherical from a monopole radiation source and a plane one. In solving the Helmholtz equation, a numerical technique based on the fast method of multipoles is used, which allows achieving high accuracy of the results obtained at the lowest cost of computer time. The calculations are compared with known experimental data and a good agreement is obtained. The formulas for calculating the main characteristic of the scattering field (the total scattering cross section) for a sound-permeable sphere are generalized. The effect on this characteristic of the physical parameters of media outside and inside the sphere, such as the density and speed of sound, is shown. A numerical parametric analysis of the pressure distribution around a single sound-permeable sphere for different values of the wave radius, density, and speed of sound of the outer and inner medium of the sphere is carried out. The obtained results will later be used for test verification calculations for the numerical solution of the generalized problem of acoustic scattering of a set of sound-permeable spheres (coaxial or arbitrarily located in space).","PeriodicalId":309215,"journal":{"name":"Multiphase Systems","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115843526","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Self-similar elastic regime of filtration through moving boundary 移动边界过滤的自相似弹性机制
Multiphase Systems Pub Date : 2018-10-15 DOI: 10.21662/MFS2018.3.010
S. Khabirov, S. S. Khabirov
{"title":"Self-similar elastic regime of filtration through moving boundary","authors":"S. Khabirov, S. S. Khabirov","doi":"10.21662/MFS2018.3.010","DOIUrl":"https://doi.org/10.21662/MFS2018.3.010","url":null,"abstract":"The one-dimensional problem of elastic filtration of fluid through moving boundary is considered. The boundary conditions for invariant problem is introduced. The problem is reduced to overdetermine boundary problem for Veber equation. The exact solutions are obtained. For arbitrary invariant filtration law the relationship between overdetermine invariant boundary conditions is obtained.","PeriodicalId":309215,"journal":{"name":"Multiphase Systems","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129046109","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Reduction of partially invariant submodels of rank 3 defect 1 to invariant submodels 将秩3缺陷1的部分不变子模型约简为不变子模型
Multiphase Systems Pub Date : 2018-10-15 DOI: 10.21662/MFS2018.3.009
D. Siraeva
{"title":"Reduction of partially invariant submodels of rank 3 defect 1 to invariant submodels","authors":"D. Siraeva","doi":"10.21662/MFS2018.3.009","DOIUrl":"https://doi.org/10.21662/MFS2018.3.009","url":null,"abstract":"Equations of hydrodynamic type with the equation of state in the form of pressure separated into a sum of density and entropy functions are considered. Such a system of equations admits a twelve-dimensional Lie algebra. In the case of the equation of state of the general form, the equations of gas dynamics admit an eleven-dimensional Lie algebra. For both Lie algebras the optimal systems of non-similar subalgebras are constructed. In this paper two partially invariant submodels of rank 3 defect 1 are constructed for two-dimensional subalgebras of the twelve-dimensional Lie algebra. The reduction of the constructed submodels to invariant submodels of eleven-dimensional and twelve-dimensional Lie algebras is proved.","PeriodicalId":309215,"journal":{"name":"Multiphase Systems","volume":"164 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133624828","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 5
The dependence of the Ranque–Hilsch effect on the cold outlet geometry Ranque-Hilsch效应对冷出口几何形状的依赖性
Multiphase Systems Pub Date : 2018-09-17 DOI: 10.21662/MFS2018.3.008
I. K. Borisoglebskiy, M. V Metusova, C. I. Mikhaylenko
{"title":"The dependence of the Ranque–Hilsch effect on the cold outlet geometry","authors":"I. K. Borisoglebskiy, M. V Metusova, C. I. Mikhaylenko","doi":"10.21662/MFS2018.3.008","DOIUrl":"https://doi.org/10.21662/MFS2018.3.008","url":null,"abstract":"The effect of such parameters of the cold outlet nozzle of the counter flow vortex tube as the length and widening angle on temperature separation is investigated. Mathematical model of gas dynamics is written with viscosity component. Computational simulation is performed in the OpenFOAM package, using the sonicFoam solver. It is shown that the temperature of the exhaust air decreases along the cold exit nozzle. The presence of the angle of widening of the nozzle affects the amount of cooling, but is not the root cause of the effect. The nonmonotonic dependence of the temperature of the exhaust gas on the length of the cold exit nozzle is demonstrated. When studying the effect on the temperature of the widening angle of a cold-exit nozzle at a fixed length, it was shown that at a fixed volume flow rate, a pronounced non-monotonic dependence is observed, while at a constant pressure drop, there is no non-monotony down to the maximum considered angle.","PeriodicalId":309215,"journal":{"name":"Multiphase Systems","volume":"227 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132574369","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Indentation of the cylindrical shell in the elastoplastic half-space 圆柱壳在弹塑性半空间中的压痕
Multiphase Systems Pub Date : 2018-09-14 DOI: 10.21662/mfs2018.3.007
A. Filippov
{"title":"Indentation of the cylindrical shell in the elastoplastic half-space","authors":"A. Filippov","doi":"10.21662/mfs2018.3.007","DOIUrl":"https://doi.org/10.21662/mfs2018.3.007","url":null,"abstract":"The article deals with the problem of pressing the steel cylindrical shell into the elastoplastic half-space having a cylindrical concavity. The calculation and analysis of the stress-strain state of the steel shell and elastoplastic half-space. Given the dependence of the shear half-space, the safety factor and stress state in steel shell from the force pushing the shell in the half-space. The calculations were carried out for three radii of concavities and two types of half-space materials. It was assumed that the elastoplastic half-space obeys the Mohr-Coulomb fracture criterion.","PeriodicalId":309215,"journal":{"name":"Multiphase Systems","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133410649","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Сollapse of weakly-nonspherical cavitation bubble in acetone and tetradecane 丙酮和十四烷中的弱非球形空化泡Сollapse
Multiphase Systems Pub Date : 2018-07-06 DOI: 10.21662/MFS2018.3.003
D. Toporkov
{"title":"Сollapse of weakly-nonspherical cavitation bubble in acetone and tetradecane","authors":"D. Toporkov","doi":"10.21662/MFS2018.3.003","DOIUrl":"https://doi.org/10.21662/MFS2018.3.003","url":null,"abstract":"Collapse of a weakly-spherical cavitation bubble in acetone and tetradecane is studied. The bubble radius is 500 μm, the temperature and pressure of the liquid are 293 K and 15 bar in the case of acetone and 663 K and 50 bar in the case of tetradecane. A hydrodynamic model is used in which the compressibility of the liquid, the nonstationary thermal conduction of the vapor and the liquid, and nonequilibrium heat and mass transfer on the bubble surface, as well as imperfection of the vapor, are considered. Realistic wide-range equations of state are used. It has been found that converging shock waves appear in the bubbles during its collapses in acetone and tetradecane. The maximum values of the thermodynamic parameters are comparable. A comparison of the evolution of the bubble sphericity perturbation and motion of the shock wave in the bubble allows suggesting that tetradecane is a more favorable medium for the realization of a near-spherical cumulation in a bubble than acetone.","PeriodicalId":309215,"journal":{"name":"Multiphase Systems","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116690759","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 5
On the dependence of a cold air production on the size of a hot air output area of the vortex tube 涡管热空气输出面积大小对冷空气产量的影响
Multiphase Systems Pub Date : 2018-07-06 DOI: 10.21662/MFS2018.3.004
R. P. Ronzhin, C. I. Mikhaylenko
{"title":"On the dependence of a cold air production on the size of a hot air output area of the vortex tube","authors":"R. P. Ronzhin, C. I. Mikhaylenko","doi":"10.21662/MFS2018.3.004","DOIUrl":"https://doi.org/10.21662/MFS2018.3.004","url":null,"abstract":"A model of a counterflow vortex tube is presented to investigate the dependence of the influence of hot exit area on the temperature separation. Computational experiments were done for 37 models for different values of the area of the hot exit ring. In a number of experiments, the pressure of the air supplied to the inlet varies in order to take into account the possible effects of computational and model errors. An anomalous result is obtained for the value of the hot exit area ∼30 cm2. Conclusions are drawn about the range of the most suitable hot exit sizes for the considered configuration of the vortex tube.","PeriodicalId":309215,"journal":{"name":"Multiphase Systems","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115669424","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Numerical simulation of bubble dynamics in central region of streamer 拖缆中心区域气泡动力学的数值模拟
Multiphase Systems Pub Date : 2018-06-29 DOI: 10.21662/MFS2018.3.002
A. Aganin, A. Davletshin, T. F. Khalitova
{"title":"Numerical simulation of bubble dynamics in central region of streamer","authors":"A. Aganin, A. Davletshin, T. F. Khalitova","doi":"10.21662/MFS2018.3.002","DOIUrl":"https://doi.org/10.21662/MFS2018.3.002","url":null,"abstract":"A mathematical model and a numerical technique for studying strong expansion and collapse of cavitation bubbles located in the central region of a streamer where the bubbles are almost motionless are developed. They are essentially efficient combinations of the models and techniques previously created by the authors for calculating the dynamics of interacting weakly-non-spherical bubbles in a streamer and the dynamics of a single axisymmetric bubble. The first model and technique are applied at the low-speed stage of expansion and compression of bubbles where their hydrodynamic interaction is significant. The second ones are used at the final high-speed stage of their collapse where the interaction is inessential. The simplest case of the streamer comprising three bubbles is considered as an example to illustrate the features of the developed model and numerical technique. It is shown that under the strong expansion and collapse of an initially spherical cavitation bubble, the presence of neighboring bubbles can substantially deflect the bubble cavity vapor dynamics from what is realized inside a similar but single bubble.","PeriodicalId":309215,"journal":{"name":"Multiphase Systems","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125177646","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
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：604180095
Book学术官方微信
小红书