Thermophysics and Aeromechanics最新文献_第9页

Investigation of low-frequency oscillations under conditions of inhomogeneous thermal convection 非均匀热对流条件下低频振荡的研究

IF 0.6 4区工程技术

Thermophysics and Aeromechanics Pub Date : 2026-05-14 DOI: 10.1134/S0869864325040018

M. S. Bobrov, M. Yu. Hrebtov

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引用次数: 0

On wave characteristics of controlled disturbances in a boundary layer with impact of a pair of weak shock waves 受一对弱激波冲击的边界层受控扰动的波特性

IF 0.6 4区工程技术

Thermophysics and Aeromechanics Pub Date : 2026-05-14 DOI: 10.1134/S0869864325040080

Yu. G. Ermolaev, A. D. Kosinov, L. V. Afanasiev, M. V. Piterimova

{"title":"On wave characteristics of controlled disturbances in a boundary layer with impact of a pair of weak shock waves","authors":"Yu. G. Ermolaev, A. D. Kosinov, L. V. Afanasiev, M. V. Piterimova","doi":"10.1134/S0869864325040080","DOIUrl":"10.1134/S0869864325040080","url":null,"abstract":"<div><p>The paper presents experimental results on the influence of weak shock waves on the development of controlled disturbances in a supersonic boundary layer on a flat plate with a Mach number equal 2.0. Results were obtained using constant-temperature anemometry method. A pair of shock waves in the incoming flow are generated by 150×7×0.13-mm 2D surface irregularity provided on the side wall of the T-325 wind tunnel (available at ITAM SB RAS). Controllable disturbances were generated in a flow by a high-frequency glow discharge within the chamber inside the model. Interacting from pair weak shock waves with the leading edge of plate creates a stationary wake in the boundary layer where controllable pulsations are generated.</p><p>The paper focuses on a weak-nonlinear regime of evolution for controllable disturbances under conditions of a distorted wake of a flat plate and a uniform boundary layer. The characteristics of disturbance waves were analyzed. A method for evaluating dispersion ratio was developed. The paper compared experimental data with computation results. Numerical computations were performed using the linear stability theory under the uniform boundary-layer conditions.</p></div>","PeriodicalId":800,"journal":{"name":"Thermophysics and Aeromechanics","volume":"32 4","pages":"905 - 920"},"PeriodicalIF":0.6,"publicationDate":"2026-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147924246","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

The effect of diluting the precursor gas with an inert gas on the structure, composition, and wettability of coating deposited by the HW CVD method 用惰性气体稀释前驱体气体对HW CVD法沉积涂层的结构、组成和润湿性的影响

IF 0.6 4区工程技术

Thermophysics and Aeromechanics Pub Date : 2026-05-14 DOI: 10.1134/S0869864325040067

A. V. Petrova, I. N. Lyapustin, V. S. Sulyaeva, A. I. Safonov

引用次数: 0

Studying the processes of flame combustion of composite fuel samples made of low-reactivity coal and biomass 研究了低反应性煤与生物质复合燃料样品的火焰燃烧过程

IF 0.6 4区工程技术

Thermophysics and Aeromechanics Pub Date : 2026-05-14 DOI: 10.1134/S0869864325040134

A. V. Kuznetsov, E. Yu. Shadrin, I. O. Lomovsky

引用次数: 0

Jet flame flashback during combustion of CH4/H2 and NH3/H2 mixtures in air CH4/H2和NH3/H2混合物在空气中燃烧时射流火焰闪回

IF 0.6 4区工程技术

Thermophysics and Aeromechanics Pub Date : 2026-05-14 DOI: 10.1134/S0869864325040092

P. A. Kabardin, V. V. Lukashov, A. V. Tupikin

引用次数: 0

Computer fluid dynamics for a flow in a mixing chamber of a triple-jet plasmachemical reactor 三喷流等离子体反应器混合室流动的计算机流体动力学

IF 0.6 4区工程技术

Thermophysics and Aeromechanics Pub Date : 2026-05-14 DOI: 10.1134/S0869864325040146

M. S. Nikolaev, E. V. Kartaev, S. P. Vaschenko, O. B. Kovalev

引用次数: 0

The lobe-shaped hole effect on film cooling efficiency on suction side of turbine blade 叶片形孔对涡轮叶片吸力侧气膜冷却效率的影响

IF 0.6 4区工程技术

Thermophysics and Aeromechanics Pub Date : 2026-05-12 DOI: 10.1134/S0869864325030199

K. Boualem, F. Ben Ali Kouchih, F. Nemdili, M. Bourdim, A. Azzi

{"title":"The lobe-shaped hole effect on film cooling efficiency on suction side of turbine blade","authors":"K. Boualem, F. Ben Ali Kouchih, F. Nemdili, M. Bourdim, A. Azzi","doi":"10.1134/S0869864325030199","DOIUrl":"10.1134/S0869864325030199","url":null,"abstract":"<div><p>In this study, the cooling fluid is injected through lobe-shaped holes (lobed jet) located on the suction surface of the blade. The novel design (lobed jet) and the baseline case are evaluated for five blowing ratios (0.3, 0.5, 0.7, 1.0 and 1.5). The commercial software ANSYS-CFX is used to analyze the numerical results as the laterally averaged film cooling, discharge coefficient and the Area weighted average film cooling effectiveness. By examining the velocity vectors and contours across the blade surface, the thermal flow behavior is described and comprehended. The turbulence model SSG-RSM model is chosen as the closure model. The result of this investigation pointed out that the proposed injection holes enhance the film cooling performance especially at higher blowing ratios. In addition, the creation of the kidney vortices is found to have less impact in the new cases compared with the basic hole case. Lobed jets demonstrated a significant increase in film cooling efficiency, especially at higher blowing ratios, where flow adherence was notably better than that from round holes.</p></div>","PeriodicalId":800,"journal":{"name":"Thermophysics and Aeromechanics","volume":"32 3","pages":"771 - 783"},"PeriodicalIF":0.6,"publicationDate":"2026-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147872404","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

The simulation principles of slag formation process in a power plant 电厂炉渣形成过程的模拟原理

IF 0.6 4区工程技术

Thermophysics and Aeromechanics Pub Date : 2026-05-12 DOI: 10.1134/S0869864325030138

V. A. Babuk, D. I. Kuklin, S. Yu. Naryzhny, V. A. Sorokin, L. S. Yanovskii

{"title":"The simulation principles of slag formation process in a power plant","authors":"V. A. Babuk, D. I. Kuklin, S. Yu. Naryzhny, V. A. Sorokin, L. S. Yanovskii","doi":"10.1134/S0869864325030138","DOIUrl":"10.1134/S0869864325030138","url":null,"abstract":"<div><p>The simulation principles of slag formation process in the combustion chamber of power plants using high–energy materials such as solid and pasty propellants have been established. This process is determined by the processes of propellant burning, evolution of the multiphase flow inside a combustion chamber and the behavior of slag residues on structural elements. A sequence of using the characteristics of these processes to describe slag formation is shown. A new model for multiphase flow evolution is presented. This model is a key tool for describing the slag formation process. The features of this model are a detailed description of big-fraction solid particles transformation and considering the interaction of condensed and gaseous phases of the flow. The model is based on the combined Euler-Lagrange approach. To validate the model, an experimental study was conducted using a model engine based on aluminized paste propellant. The result of study brings a conclusion about the adequacy of simulation. The directions of further research are determined to solve the problem of simulating a process with account for varying composition parameters and conditions within the combustion chamber.</p></div>","PeriodicalId":800,"journal":{"name":"Thermophysics and Aeromechanics","volume":"32 3","pages":"675 - 687"},"PeriodicalIF":0.6,"publicationDate":"2026-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147872405","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

Structure and stability of a supersonic boundary layer with a transverse pressure gradient induced by an oblique shock waves 斜激波诱导下具有横向压力梯度的超音速边界层结构与稳定性

IF 0.6 4区工程技术

Thermophysics and Aeromechanics Pub Date : 2026-05-12 DOI: 10.1134/S0869864325030047

A. A. Sidorenko, S. V. Kirilovskiy, T. V. Poplavskaya

引用次数: 0

The limits of mass transfer intensity during ethanol evaporation and combustion in the boundary layer (review) 乙醇蒸发燃烧边界层传质强度极限（综述）

IF 0.6 4区工程技术

Thermophysics and Aeromechanics Pub Date : 2026-05-12 DOI: 10.1134/S0869864325030011

B. F. Boyarshinov

引用次数: 0