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Numerical Study of High-Speed Submerged Water Jet with Respect to Phase Transitions 高速淹没水射流相变的数值研究
IF 0.6 4区 工程技术
Journal of Applied Mechanics and Technical Physics Pub Date : 2026-04-01 DOI: 10.1134/S0021894425700865
A. A. Chernova, M. R. Koroleva
{"title":"Numerical Study of High-Speed Submerged Water Jet with Respect to Phase Transitions","authors":"A. A. Chernova,&nbsp;M. R. Koroleva","doi":"10.1134/S0021894425700865","DOIUrl":"10.1134/S0021894425700865","url":null,"abstract":"<p>The paper is devoted to numerical modeling of the dynamics of a submerged jet, being formed at water outflow from a high-pressure vessel into surrounding limited volume stationary medium of the pit. Features of high-speed submerged jet formation and pressure wave propagation in pit were defined. The initial pressure at the vessel was equal 150 MPa, the initial temperature—150°C. It was shown that under these conditions the system equilibrium pressure corresponds to 200 standard atmospheres and being settled within <span>(80;{text{ms}})</span> from the beginning of liquid outflow from a vessel. It was shown that the maximum hydrodynamic load constituted 2.25 MN, which is 16 times higher than the force in the case of a jet flowing into a space filled with air.</p>","PeriodicalId":608,"journal":{"name":"Journal of Applied Mechanics and Technical Physics","volume":"66 1","pages":"S33 - S38"},"PeriodicalIF":0.6,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147588396","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
Data Assimilation of Lagrangian Particle Tracks for Calculation of Flow Parameters Using Physics-Informed Machine Learning 拉格朗日粒子轨迹的数据同化在流体参数计算中的应用
IF 0.6 4区 工程技术
Journal of Applied Mechanics and Technical Physics Pub Date : 2026-04-01 DOI: 10.1134/S002189442570083X
M. P. Tokarev, A. V. Seredkin, M. Yu. Hrebtov
{"title":"Data Assimilation of Lagrangian Particle Tracks for Calculation of Flow Parameters Using Physics-Informed Machine Learning","authors":"M. P. Tokarev,&nbsp;A. V. Seredkin,&nbsp;M. Yu. Hrebtov","doi":"10.1134/S002189442570083X","DOIUrl":"10.1134/S002189442570083X","url":null,"abstract":"<p>We present a machine learning algorithm for the reconstruction of the flow field from Lagrangian particle tracks. The algorithm is based on a B-spline approximation of the flow field with smooth derivatives. It is possible to restore both the velocity and the pressure fields in the computational domain. Assimilation of experimental data in fluid mechanics is needed to restore the missing details of an experiment using physical constraints. Experimental studies of complex nonstationary flows using three-dimensional whole-field optical methods based on Lagrangian particle tracking with spatial and temporal resolution exceeding the characteristics of currently used methods, while spending less computing resources on data processing, are of great interest for researchers. The results of such measurements in the form of tens of thousands of tracer particle tracks can be used for further analysis of the dynamics of the velocity, acceleration, and pressure fields in flows, as well as the Reynolds stress tensor, which allows validating the velocity and pressure distributions in eddy-resolving nonstationary three-dimensional simulations.</p>","PeriodicalId":608,"journal":{"name":"Journal of Applied Mechanics and Technical Physics","volume":"66 1","pages":"S91 - S96"},"PeriodicalIF":0.6,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147588399","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
Mathematical Modeling and Numerical Simulation of Heat and Mass Transfer in Snow Cover and Soil 积雪与土壤传热传质的数学建模与数值模拟
IF 0.6 4区 工程技术
Journal of Applied Mechanics and Technical Physics Pub Date : 2026-04-01 DOI: 10.1134/S0021894425700828
A. N. Sibin, T. A. Pekarskaya, N. I. Ianchenko
{"title":"Mathematical Modeling and Numerical Simulation of Heat and Mass Transfer in Snow Cover and Soil","authors":"A. N. Sibin,&nbsp;T. A. Pekarskaya,&nbsp;N. I. Ianchenko","doi":"10.1134/S0021894425700828","DOIUrl":"10.1134/S0021894425700828","url":null,"abstract":"<p>This paper presents a mathematical model describing heat and mass transfer processes in snow and the upper soil layer. The model incorporates phase transitions, dynamic changes in porosity, and the transport of dynamically neutral solutes dissolved in water. Developed on the basis of mass and energy conservation laws, as well as two-phase filtration theory for porous media, the model captures the interactions among water, ice, air, and soil under conditions of seasonal freezing and thawing. Special emphasis is placed on the effects of porosity variations in soil and snow on their filtration characteristics. The proposed model enables the prediction of the impacts of anthropogenic activities and climate change on the hydrological regime and soil salinization in cold regions.</p>","PeriodicalId":608,"journal":{"name":"Journal of Applied Mechanics and Technical Physics","volume":"66 1","pages":"S46 - S53"},"PeriodicalIF":0.6,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147588484","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
Heat Transfer during Cooling of a Modified High-Temperature Surface by a Dispersed Coolant Flow 分散冷却剂流冷却改性高温表面时的传热
IF 0.6 4区 工程技术
Journal of Applied Mechanics and Technical Physics Pub Date : 2026-04-01 DOI: 10.1134/S0021894425700750
A. V. Zakharenkov, A. V. Dedov, A. T. Komov, E. V. Sviridov
{"title":"Heat Transfer during Cooling of a Modified High-Temperature Surface by a Dispersed Coolant Flow","authors":"A. V. Zakharenkov,&nbsp;A. V. Dedov,&nbsp;A. T. Komov,&nbsp;E. V. Sviridov","doi":"10.1134/S0021894425700750","DOIUrl":"10.1134/S0021894425700750","url":null,"abstract":"<p>The paper presents the results of experimental studies on heat transfer enhancement on a modified surface using laser radiation. A brief description of the experimental setup “One-sided target heating” and the design of the test section where the studies were conducted is provided. Experimental data on the temperature distribution of the target during one-sided beam heating and cooling with a water-air spray on the opposite side were obtained. Processing of the experimental data yielded values for the heated and cooled surfaces, as well as the heat flux density based on the operational parameters of the coolant components. It is shown that the combined use of a modified surface and a dispersed flow allows for heat loads of up to 10 MW/m<sup>2</sup>‚ to be removed from the target.</p>","PeriodicalId":608,"journal":{"name":"Journal of Applied Mechanics and Technical Physics","volume":"66 1","pages":"S78 - S83"},"PeriodicalIF":0.6,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147588485","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
Study of the Granular Material Transportation Process Implemented By Tubular Vibratory Elevator 管状振动提升机实现颗粒物料输送过程的研究
IF 0.6 4区 工程技术
Journal of Applied Mechanics and Technical Physics Pub Date : 2026-03-26 DOI: 10.1134/S0021894425700737
V. S. Sizikov
{"title":"Study of the Granular Material Transportation Process Implemented By Tubular Vibratory Elevator","authors":"V. S. Sizikov","doi":"10.1134/S0021894425700737","DOIUrl":"10.1134/S0021894425700737","url":null,"abstract":"<p>This study investigates the process of vibratory lifting of granular materials through the channel of a two-mass tubular vibratory elevator. Using the vibratory transport of construction sand as an example, we examine the influence of the oscillation frequency and amplitude of the elevator’s conveying elements, the wall inclination angle of the vibratory elevator, and the material fill density of the device channel on the maximum lift height and the velocity of vibrotransportation process of the material. The results demonstrate that the forced vibration frequency should be detuned from the resonant frequency when selecting the operating modes of the device. The most effective control of the device operation is achieved by adjusting the oscillation amplitude of the conveying elements and the inclination angle of the vibratory elevator relative to the horizontal. Recommendations for improving the model of the bulk medium transport process within the device are provided, and directions for future research are outlined.</p>","PeriodicalId":608,"journal":{"name":"Journal of Applied Mechanics and Technical Physics","volume":"66 6","pages":"1198 - 1209"},"PeriodicalIF":0.6,"publicationDate":"2026-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147561579","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
Effect of a Jet Vortex Generator on a Turbulent Boundary Layer: 2. Analysis of Unsteady Characteristics 射流涡发生器对湍流边界层的影响：2。非定常特性分析
IF 0.6 4区 工程技术
Journal of Applied Mechanics and Technical Physics Pub Date : 2026-03-26 DOI: 10.1134/S0021894425700609
P. A. Polivanov, V. V. Markin, A. A. Sidorenko, S. D. Salenko
{"title":"Effect of a Jet Vortex Generator on a Turbulent Boundary Layer: 2. Analysis of Unsteady Characteristics","authors":"P. A. Polivanov,&nbsp;V. V. Markin,&nbsp;A. A. Sidorenko,&nbsp;S. D. Salenko","doi":"10.1134/S0021894425700609","DOIUrl":"10.1134/S0021894425700609","url":null,"abstract":"<p>This study investigates the unsteady flow characteristics arising from the interaction between a streamwise vortex, induced by wall jet injection, and a turbulent boundary layer. Velocity field measurements are measured using Particle Image Velocimetry. The data analysis was quantify the following: turbulence anisotropy, characteristic length scales of turbulent structures, and identify dominant coherent structures using Proper Orthogonal Decomposition (POD). The results reveal mutual interaction between the turbulent boundary layer and the streamwise vortex, which depends on the vortex intensity. It is shown that the air jet vortex generator significantly alters both the mean flow topology and the unsteady dynamics of the turbulent boundary layer.</p>","PeriodicalId":608,"journal":{"name":"Journal of Applied Mechanics and Technical Physics","volume":"66 6","pages":"1052 - 1067"},"PeriodicalIF":0.6,"publicationDate":"2026-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147561580","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 Determination of Thermal Loads on a Supersonic Exhaust Diffuser 超音速排气扩散器热负荷的实验测定
IF 0.6 4区 工程技术
Journal of Applied Mechanics and Technical Physics Pub Date : 2026-03-26 DOI: 10.1134/S0021894425700713
D. I. Nugumanov, R. D. Berdov, A. S. Golovatyuk, V. S. Kiseleva, A. G. Timarov
{"title":"Experimental Determination of Thermal Loads on a Supersonic Exhaust Diffuser","authors":"D. I. Nugumanov,&nbsp;R. D. Berdov,&nbsp;A. S. Golovatyuk,&nbsp;V. S. Kiseleva,&nbsp;A. G. Timarov","doi":"10.1134/S0021894425700713","DOIUrl":"10.1134/S0021894425700713","url":null,"abstract":"<p>We present the results of an experimental investigation into heat transfer within the flow duct of a gas-dynamic tunnel during tests with solid-fuel combustion products containing a minor fraction of condensed particles. Static pressure and heat flux density distributions along the duct are measured using an array of 29 heat flux sensors and 25 pressure transducers. The design of the heat flux sensors and key aspects of their implementation are described. Suitable scaling parameters for nondimensionalizing the experimental data are proposed. Based on the processed and compiled heat flux and pressure distributions, a conceptual model is developed to describe the flow processes inside the supersonic diffuser channel. The primary factors governing the thermal loads on the diffuser structure are identified.</p>","PeriodicalId":608,"journal":{"name":"Journal of Applied Mechanics and Technical Physics","volume":"66 6","pages":"1176 - 1184"},"PeriodicalIF":0.6,"publicationDate":"2026-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147561554","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
Solute Transport in a Porous Medium in the Presence of Oscillations 振荡存在下多孔介质中溶质输运
IF 0.6 4区 工程技术
Journal of Applied Mechanics and Technical Physics Pub Date : 2026-03-26 DOI: 10.1134/S0021894425700646
D. A. Polezhaev, A. V. Teryokhina
{"title":"Solute Transport in a Porous Medium in the Presence of Oscillations","authors":"D. A. Polezhaev,&nbsp;A. V. Teryokhina","doi":"10.1134/S0021894425700646","DOIUrl":"10.1134/S0021894425700646","url":null,"abstract":"<p>This paper presents an experimental study of transport of a solute (fluorescent dye Rhodamine B dissolved in water) in a porous medium in the presence of water oscillations. The porous medium is a rectangular cell containing cylinders whose axis was normal to the plane of the cell. The measurement technique used allowed us to measure the Rhodamine B mass transport rate and obtain an instantaneous and a steady streaming velocity field between the cylinders. The diffusion coefficient related to steady streaming has been shown to be a linear function of the Peclet number, evaluated from the fluid steady streaming velocity. At low dimensionless oscillation frequencies, there is a universal relation between the effective diffusion coefficient and Peclet number. At moderate dimensionless oscillation frequencies, the proportionality factor between these parameters increases with increasing frequency.</p>","PeriodicalId":608,"journal":{"name":"Journal of Applied Mechanics and Technical Physics","volume":"66 6","pages":"1090 - 1104"},"PeriodicalIF":0.6,"publicationDate":"2026-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147561574","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
Electrophoresis of Highly Charged Hydrophobic Micro- and Nanoparticles 高电荷疏水微粒子和纳米粒子的电泳
IF 0.6 4区 工程技术
Journal of Applied Mechanics and Technical Physics Pub Date : 2026-03-26 DOI: 10.1134/S0021894425700634
E. A. Frants, E. N. Kalaidin, A. A. Krylov, E. A. Demekhin
{"title":"Electrophoresis of Highly Charged Hydrophobic Micro- and Nanoparticles","authors":"E. A. Frants,&nbsp;E. N. Kalaidin,&nbsp;A. A. Krylov,&nbsp;E. A. Demekhin","doi":"10.1134/S0021894425700634","DOIUrl":"10.1134/S0021894425700634","url":null,"abstract":"<p>Numerical simulation and analytical methods have been used to study electrophoresis of a dielectric particle having a hydrophobic surface and high surface conductivity. The results demonstrate that, in a moderate electric field and at high surface charge density, particle velocity increases and the contribution of surface conductivity considerably exceeds that of the slip length. A formula has been analytically derived for the mobility of a hydrophobic particle, which comprises three terms: (1) the linear term in the Helmholtz–Smoluchowski well-known relation, (2) a term representing the contribution of the hydrophobic surface, and (3) the surface conductivity contribution due to the high surface charge density. We present results for a small and a large slip length, corresponding to micro- and nanoparticles. Comparison of the numerical and analytical solutions we obtained demonstrates good agreement between the two approaches used.</p>","PeriodicalId":608,"journal":{"name":"Journal of Applied Mechanics and Technical Physics","volume":"66 6","pages":"1082 - 1089"},"PeriodicalIF":0.6,"publicationDate":"2026-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147561735","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
Generation of Supersonic-Flow Disturbances by Two-Dimensional Roughness in a Turbulent Boundary Layer 湍流边界层中二维粗糙度对超音速流动扰动的影响
IF 0.6 4区 工程技术
Journal of Applied Mechanics and Technical Physics Pub Date : 2026-03-26 DOI: 10.1134/S0021894425700695
A. A. Yatskikh, L. V. Afanas’ev, Yu. G. Ermolaev, N. V. Semenov, A. D. Kosinov
{"title":"Generation of Supersonic-Flow Disturbances by Two-Dimensional Roughness in a Turbulent Boundary Layer","authors":"A. A. Yatskikh,&nbsp;L. V. Afanas’ev,&nbsp;Yu. G. Ermolaev,&nbsp;N. V. Semenov,&nbsp;A. D. Kosinov","doi":"10.1134/S0021894425700695","DOIUrl":"10.1134/S0021894425700695","url":null,"abstract":"<p>Supersonic-flow disturbances generated by two-dimensional roughness on the wall of a wind-tunnel test section are simulated. The case of a small roughness height compared to the thickness of the turbulent boundary layer on the wall is considered. The studies involve numerical simulations taking into account the turbulent boundary layer on the wall and experiments using a hot-wire anemometer. The effect of the height and width of the two-dimensional roughness and the flow Mach number on supersonic-flow disturbances are studied. It is established that the presence of the two-dimensional roughness causes a stationary free-stream disturbance in the form of an N-wave and the occurrence of a region with increased nonstationary pulsations over a wide spectrum. Increasing the height of the two-dimensional roughness is shown to increase the amplitude and spatial scale of the disturbance generated in the flow. For a small roughness width, the free-stream disturbance takes the shape of an N-wave; as the width increases, the disturbance amplitude remains unchanged and the N-wave splits into two shocks. The spatial scales of the mean-flow disturbance are compared for a fixed roughness geometry and Mach numbers of 2 and 2.5.</p>","PeriodicalId":608,"journal":{"name":"Journal of Applied Mechanics and Technical Physics","volume":"66 6","pages":"1164 - 1170"},"PeriodicalIF":0.6,"publicationDate":"2026-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147561730","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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