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Comparison of the Boiling Characteristics of Water and Hydrofluoroether on a Cylindrical Surface with a Diameter of 1 mm 水和氢氟醚在直径为1mm的圆柱形表面上沸腾特性的比较
IF 0.6 4区 工程技术
Journal of Applied Mechanics and Technical Physics Pub Date : 2026-04-01 DOI: 10.1134/S0021894425700798
N. V. Kukshinov, D. N. Morskoy, V. E. Evstigneeva, T. I. Molchanov
{"title":"Comparison of the Boiling Characteristics of Water and Hydrofluoroether on a Cylindrical Surface with a Diameter of 1 mm","authors":"N. V. Kukshinov,&nbsp;D. N. Morskoy,&nbsp;V. E. Evstigneeva,&nbsp;T. I. Molchanov","doi":"10.1134/S0021894425700798","DOIUrl":"10.1134/S0021894425700798","url":null,"abstract":"<p>Experimental studies were conducted on the dynamics of phase interface formation during the boiling of distilled water and hydrofluoroether on a cylindrical surface with a diameter of 1 mm. The experiments ensured a bubble boiling regime, and bubble characteristics were determined using high-speed imaging via PSV (particle shadow velocimetry). Statistically reliable departure diameters and bubble growth rates on the surface were determined as functions of temperature head.</p>","PeriodicalId":608,"journal":{"name":"Journal of Applied Mechanics and Technical Physics","volume":"66 1","pages":"S84 - S90"},"PeriodicalIF":0.6,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147588397","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
Reynolds-Number Effect on the Flow Structure in a Deterministic Lateral Displacement (DLD) Microfluidic Chip 确定性横向位移（DLD）微流控芯片流动结构的雷诺数效应
IF 0.6 4区 工程技术
Journal of Applied Mechanics and Technical Physics Pub Date : 2026-04-01 DOI: 10.1134/S0021894425700786
A. V. Kovalev, G. R. Turkiya, M. V. Shestakov, A. A. Yagodnitsyna
{"title":"Reynolds-Number Effect on the Flow Structure in a Deterministic Lateral Displacement (DLD) Microfluidic Chip","authors":"A. V. Kovalev,&nbsp;G. R. Turkiya,&nbsp;M. V. Shestakov,&nbsp;A. A. Yagodnitsyna","doi":"10.1134/S0021894425700786","DOIUrl":"10.1134/S0021894425700786","url":null,"abstract":"<p>This study presents a comprehensive experimental and numerical investigation into the effects of Reynolds number (Re) on flow behavior in deterministic lateral displacement (DLD) devices. While conventional DLD operation typically occurs at low Reynolds numbers (Re &lt; 1) where viscous forces dominate, this research systematically explores the transition to higher Re regimes (0.04 <span>( leqslant )</span> Re <span>( leqslant )</span> 66.7) to address the critical need for increased throughput in practical applications. The results demonstrate that increasing Reynolds number significantly alters flow profiles, with the emergence of recirculating vortices behind posts at Re <span>( approx )</span> 50 and notable streamline narrowing, both factors reducing the effective critical diameter (<span>({{D}_{c}})</span>) for particle separation. These findings reveal the limitations of traditional <span>({{D}_{c}})</span> models, which remain accurate only in the low Re regime prior to vortex formation.</p>","PeriodicalId":608,"journal":{"name":"Journal of Applied Mechanics and Technical Physics","volume":"66 1","pages":"S19 - S25"},"PeriodicalIF":0.6,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147588402","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
Computational Studies of the Generation of Acoustic–Vortex Oscillations in the Injector and Their Effect on Intensification of Hydrogen Combustion in the Model Channel 喷油器声涡振荡的产生及其对模型通道内氢燃烧强化影响的计算研究
IF 0.6 4区 工程技术
Journal of Applied Mechanics and Technical Physics Pub Date : 2026-04-01 DOI: 10.1134/S0021894425700816
D. I. Serebryakov, A. N. Prokhorov, M. A. Ilchenko, D. L. Mamyshev
{"title":"Computational Studies of the Generation of Acoustic–Vortex Oscillations in the Injector and Their Effect on Intensification of Hydrogen Combustion in the Model Channel","authors":"D. I. Serebryakov,&nbsp;A. N. Prokhorov,&nbsp;M. A. Ilchenko,&nbsp;D. L. Mamyshev","doi":"10.1134/S0021894425700816","DOIUrl":"10.1134/S0021894425700816","url":null,"abstract":"<p>The possibility of intensifying the mixing and combustion of hydrogen in the model channel during straight supply by means of acoustic–vortex oscillations generated in the injector is considered. The results of numerical computational studies in a two-dimensional formulation are presented. An increase hydrogen combustion efficiency in the model channel has been obtained in the presence of vortex oscillations in the injector compared with the case of its stationary outflow. The frequencies of own acoustic vibrations in the injector are analytically estimated. It is established that the vortex sound in the injector is realized at a frequency close to or equal to one of its own acoustic frequencies. The most intense pulsations of the hydrogen jet at the outlet of the injector occur at frequencies corresponding to transverse vibrations in the injector channel.</p>","PeriodicalId":608,"journal":{"name":"Journal of Applied Mechanics and Technical Physics","volume":"66 1","pages":"S1 - S9"},"PeriodicalIF":0.6,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147588403","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
Numerical Study of Heat Transfer to a High-Temperature Flow of Helium–Xenon Mixture in a Round Tube 氦氙混合物在圆管内高温流动传热的数值研究
IF 0.6 4区 工程技术
Journal of Applied Mechanics and Technical Physics Pub Date : 2026-04-01 DOI: 10.1134/S0021894425700889
V. S. Naumkin, M. S. Makarov, K. S. Lebeda, O. V. Vitovsky, V. V. Terekhov
{"title":"Numerical Study of Heat Transfer to a High-Temperature Flow of Helium–Xenon Mixture in a Round Tube","authors":"V. S. Naumkin,&nbsp;M. S. Makarov,&nbsp;K. S. Lebeda,&nbsp;O. V. Vitovsky,&nbsp;V. V. Terekhov","doi":"10.1134/S0021894425700889","DOIUrl":"10.1134/S0021894425700889","url":null,"abstract":"<p>This study is aimed at solving the classical heat transfer problem arising in components of the gas reactor with very high coolant temperatures (VHTR). Numerical modeling methods are used to analyze heat transfer from the inner wall of a round tube to a flow of helium–xenon mixtures of varying compositions. The influence of massive electrodes located at the inlet and outlet on heat transfer in the central part of the tube, as well as variation in the Prandtl number of the mixed gas coolant in the range from 0.23 to 0.7, is taken into account. Heat input was implemented by a volumetric heat source both in the tube itself and in the massive electrodes.</p>","PeriodicalId":608,"journal":{"name":"Journal of Applied Mechanics and Technical Physics","volume":"66 1","pages":"S59 - S65"},"PeriodicalIF":0.6,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147588486","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
Numerical Modeling of Deformation and Motion of a Bubble in Oil under the Influence of an Electric Field Based on an Arbitrary Lagrangian–Eulerian Method 基于任意拉格朗日-欧拉方法的电场作用下油中气泡变形和运动数值模拟
IF 0.6 4区 工程技术
Journal of Applied Mechanics and Technical Physics Pub Date : 2026-04-01 DOI: 10.1134/S0021894425700877
V. A. Chirkov, P. A. Kostin, S. A. Vasilkov, E. O. Chervinskaya, I. A. Elagin
{"title":"Numerical Modeling of Deformation and Motion of a Bubble in Oil under the Influence of an Electric Field Based on an Arbitrary Lagrangian–Eulerian Method","authors":"V. A. Chirkov,&nbsp;P. A. Kostin,&nbsp;S. A. Vasilkov,&nbsp;E. O. Chervinskaya,&nbsp;I. A. Elagin","doi":"10.1134/S0021894425700877","DOIUrl":"10.1134/S0021894425700877","url":null,"abstract":"<p>A numerical model based on the arbitrary Lagrangian–Eulerian (ALE) method is developed to simulate the deformation and motion of gas bubbles in weakly conducting liquids under strong electric fields. The model accounts for the time-dependent accumulation of free surface charge at the bubble–liquid interface, enabling the investigation of transient electrohydrodynamic phenomena under various voltage application regimes. Owing to its accurate interface tracking and low computational cost, the model is well-suited for problems where interfacial deformation is critical. As a practical application, the model is used to simulate vapor removal from a boiling refrigerant in a strong electric field under zero-gravity conditions. Validation against known theoretical and experimental results confirms the model’s ability to reproduce both steady-state and dynamic bubble behavior. Future developments may include the effects of interfacial ionic convection and electrostrictive forces.</p>","PeriodicalId":608,"journal":{"name":"Journal of Applied Mechanics and Technical Physics","volume":"66 1","pages":"S26 - S32"},"PeriodicalIF":0.6,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147588331","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
Influence of the Porous Structure on Vapor Phase Dynamics at Boiling 多孔结构对沸腾时气相动力学的影响
IF 0.6 4区 工程技术
Journal of Applied Mechanics and Technical Physics Pub Date : 2026-04-01 DOI: 10.1134/S0021894425700841
A. V. Fedoseev, M. V. Salnikov
{"title":"Influence of the Porous Structure on Vapor Phase Dynamics at Boiling","authors":"A. V. Fedoseev,&nbsp;M. V. Salnikov","doi":"10.1134/S0021894425700841","DOIUrl":"10.1134/S0021894425700841","url":null,"abstract":"<p>The behavior of the vapor phase at boiling in a porous body was simulated with the help of a hybrid model based on the lattice Boltzmann method and the solution of the heat conduction equation. The boiling process is considered in a two-dimensional formulation in a model porous medium formed by a set of rectangular solid inclusions. The dynamics of the vapor phase rising through a porous body under the action of a buoyant force was studied depending on the parameters of the porous body structure. The influence of two neighboring bubbles on each other was investigated for vertical and horizontal arrangements of two adjacent heaters inside the porous structure. As a result, the phase pictures of the boiling process, the time dependencies of the effective heat fluxes from the heaters and the bubbles departure frequencies were obtained for various structural parameters of the porous body and the heaters configuration. An analysis of the results permits to identify the mechanisms of heat exchange intensification/degradation at boiling in a porous structure.</p>","PeriodicalId":608,"journal":{"name":"Journal of Applied Mechanics and Technical Physics","volume":"66 1","pages":"S39 - S45"},"PeriodicalIF":0.6,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147588483","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
An Experimental Study of Ammonia Stable Combustion Modes in a Bidirectional Swirling Flow 双向旋流中氨稳定燃烧模式的实验研究
IF 0.6 4区 工程技术
Journal of Applied Mechanics and Technical Physics Pub Date : 2026-04-01 DOI: 10.1134/S0021894425700774
R. I. Ivanov, O. A. Evdokimov, A. I Gur’yanov, Sh. A. Pirialishvili
{"title":"An Experimental Study of Ammonia Stable Combustion Modes in a Bidirectional Swirling Flow","authors":"R. I. Ivanov,&nbsp;O. A. Evdokimov,&nbsp;A. I Gur’yanov,&nbsp;Sh. A. Pirialishvili","doi":"10.1134/S0021894425700774","DOIUrl":"10.1134/S0021894425700774","url":null,"abstract":"<p>The article presents a new technology for burning pure ammonia in air, based on the characteristics of bidirectional swirling flow. It describes the results of research on ammonia combustion in vortex devices with various geometries, and how the diameter of the vortex chamber, nozzle diameter and expansion angle affect the process. The article also discusses the limits of flame blow-off, which are determined by the Reynolds number. It shows that the rich blow-off limit is a simple linear function of the Reynolds number, but the lean blow-off has a more complex, nonlinear relationship with extreme values. Stable combustion modes are observed in the range of Reynolds numbers between 600 and 3500, and the combustion of pure ammonia occurs predominantly at air-to-fuel equivalence ratios greater than 1.</p>","PeriodicalId":608,"journal":{"name":"Journal of Applied Mechanics and Technical Physics","volume":"66 1","pages":"S10 - S18"},"PeriodicalIF":0.6,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147588322","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
Three-Dimensional Ice Geometry Triangulation Measurement System Spatial Resolution Increasing Method 三维冰几何三角测量系统空间分辨率提高方法
IF 0.6 4区 工程技术
Journal of Applied Mechanics and Technical Physics Pub Date : 2026-04-01 DOI: 10.1134/S0021894425700762
V. O. Zuev, S. V. Kakaulin, S. V. Dvoynishnikov, I. K. Kabardin, A. T. Yanchat
{"title":"Three-Dimensional Ice Geometry Triangulation Measurement System Spatial Resolution Increasing Method","authors":"V. O. Zuev,&nbsp;S. V. Kakaulin,&nbsp;S. V. Dvoynishnikov,&nbsp;I. K. Kabardin,&nbsp;A. T. Yanchat","doi":"10.1134/S0021894425700762","DOIUrl":"10.1134/S0021894425700762","url":null,"abstract":"<p>The work is devoted to the development of a three-dimensional ice geometry triangulation control system spatial resolution increasing method without reduce of а measuring sizes range. It is proposed to use the ice three-dimensional geometry diagnostic system, consisting of several triangulation modules with different spatial resolution and measurement volume size. A method of mutual triangulation modules calibration is proposed to coordinate their three-dimensional measurement results. Experimental and model testing of the proposed method has been performed. The correctness of its operation and the transformation between two triangulation modules reconstruction accuracy increase possibility by increasing the intersection area of their measurement volumes and the number of points used to reduce coordinate systems are shown. The work results open up the possibility of conducting advanced research on icing processes with its three-dimensional geometry multi-scale diagnostics.</p>","PeriodicalId":608,"journal":{"name":"Journal of Applied Mechanics and Technical Physics","volume":"66 1","pages":"S66 - S71"},"PeriodicalIF":0.6,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147588401","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
Modeling of Platinum Behavior under High-Energy Loading up to 2 TPa 铂在高达2 TPa的高能载荷下的行为建模
IF 0.6 4区 工程技术
Journal of Applied Mechanics and Technical Physics Pub Date : 2026-04-01 DOI: 10.1134/S0021894425700804
K. K. Maevskii
{"title":"Modeling of Platinum Behavior under High-Energy Loading up to 2 TPa","authors":"K. K. Maevskii","doi":"10.1134/S0021894425700804","DOIUrl":"10.1134/S0021894425700804","url":null,"abstract":"<p>Numerical modeling of the thermodynamic parameters of platinum shock wave loading in this work is performed in terms of a thermodynamically equilibrium model, which makes it possible to describe experimental data over a wide range of pressure and porosity values for both pure substances and heterogeneous materials. The possibility of calculating the behavior of the mixture according to the model makes it possible to reliably simulate the parameters of the studied samples with components that undergo a phase transition under shock wave loading. In this paper, thermodynamically consistent small-parameter equations of state for Pt of two phases are constructed. The parameters of the equations are determined, which make it possible to reliably describe the values of heat capacity, entropy, and thermodynamic Gibbs potential. Shock adiabats in the range to 2 TPa are constructed. With a small number of parameters determined according to experimental data the reliable description of the shock wave loading of Pt has been obtained. The results of numerical modeling correspond well to the data obtained on the basis of experiments and do not contradict the calculations of other authors.</p>","PeriodicalId":608,"journal":{"name":"Journal of Applied Mechanics and Technical Physics","volume":"66 1","pages":"S72 - S77"},"PeriodicalIF":0.6,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147588398","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
Pressure Drop during Short-Time Gas Injection in a Vertical Rod Bundle 垂直抽油杆短时间注气时的压降
IF 0.6 4区 工程技术
Journal of Applied Mechanics and Technical Physics Pub Date : 2026-04-01 DOI: 10.1134/S0021894425700853
N. A. Pribaturin, I. A. Evdokimenko, P. D. Lobanov, D. E. Legostaev, K. A. Filippskii, N. A. Gulyaev, A. I. Svetonosov
{"title":"Pressure Drop during Short-Time Gas Injection in a Vertical Rod Bundle","authors":"N. A. Pribaturin,&nbsp;I. A. Evdokimenko,&nbsp;P. D. Lobanov,&nbsp;D. E. Legostaev,&nbsp;K. A. Filippskii,&nbsp;N. A. Gulyaev,&nbsp;A. I. Svetonosov","doi":"10.1134/S0021894425700853","DOIUrl":"10.1134/S0021894425700853","url":null,"abstract":"<p>The study investigates the short-time injection of gas under pressure ranging from 10 to 40 bar through a 6 mm hole from a fixed volume (30 and 70 mL) into an assembly of 85 vertical rods. Dynamic pressure sensors were used to obtain data on pressure oscillations in the system. It was shown that an increase in the initial pressure leads to an increase in oscillations in the system. It was found that the maximum pressure drop occurs at the moment when gas flows out of the fixed volume at the highest speed. It was found that an increase in the flow volume affects the amplitude of oscillations in the range up to 10 bar. At high injection pressures, the volume effect disappears, which is associated with gas locking.</p>","PeriodicalId":608,"journal":{"name":"Journal of Applied Mechanics and Technical Physics","volume":"66 1","pages":"S54 - S58"},"PeriodicalIF":0.6,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147588400","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
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