Chinese Journal of Aeronautics最新文献

Ablation behavior of Hf-Zr-modified silicon-based ceramic coatings prepared by polymer derived ceramics and gaseous silicon infiltration 聚合物衍生陶瓷和气态硅浸润制备hf - zr改性硅基陶瓷涂层的烧蚀行为

1区工程技术

Chinese Journal of Aeronautics Pub Date : 2025-12-01 DOI: 10.1016/j.cja.2025.104010

Lingxiang Guo, Yue Dong, Yuqi Wang, Shiwei HUANG, Laura Feldmann, Ralf Riedel, Jia Sun

{"title":"Ablation behavior of Hf-Zr-modified silicon-based ceramic coatings prepared by polymer derived ceramics and gaseous silicon infiltration","authors":"Lingxiang Guo, Yue Dong, Yuqi Wang, Shiwei HUANG, Laura Feldmann, Ralf Riedel, Jia Sun","doi":"10.1016/j.cja.2025.104010","DOIUrl":"https://doi.org/10.1016/j.cja.2025.104010","url":null,"abstract":"To improve the ablation resistance of C/C composite at temperatures exceeding 2000 °C, a (Hf-Zr)C-SiC Ultra-High Temperature Ceramic (UHTC) coating was prepared by Polymer Derived Ceramics (PDCs) and Gaseous Silicon Infiltration (GSI). The linear ablation rate of the coated C/C composites was as low as 0.27 μm/s, maintaining a level as low as 10 -4 mm/s. This low R l is attributed to the formation of a well-bonded double-layered oxide scale with high thermal stability, consisting of an exterior SiO 2 glass layer and an interior Hf-Zr-Si-O complex oxide layer. Meanwhile, the dissipation of the residual Si and the C phase relieves heat accumulation, ensuring that the recorded surface temperature remains below 2000 °C, thereby enhancing the ablation resistance. Additionally, a cyclic evolution of linear ablation rate was found, due to the alternating dominant role of oxidation and mechanical denudation on the coating during ablation. This study provides theoretical and experimental support for the long-term anti-ablation design of highly dense UHTC coatings.","PeriodicalId":55631,"journal":{"name":"Chinese Journal of Aeronautics","volume":"1 1","pages":"104010-104010"},"PeriodicalIF":0.0,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147333221","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Impact of spring pressure on ignition and combustion of electrically controlled solid propellant 弹簧压力对电控固体推进剂点火和燃烧的影响

1区工程技术

Chinese Journal of Aeronautics Pub Date : 2025-08-05 DOI: 10.1016/j.cja.2025.103745

Zejun Hu, Jianjun Wu, Zhicheng He, Yu Zhang, Peng Zheng, Yuanzheng Zhao, Zhanwen Ma

{"title":"Impact of spring pressure on ignition and combustion of electrically controlled solid propellant","authors":"Zejun Hu, Jianjun Wu, Zhicheng He, Yu Zhang, Peng Zheng, Yuanzheng Zhao, Zhanwen Ma","doi":"10.1016/j.cja.2025.103745","DOIUrl":"https://doi.org/10.1016/j.cja.2025.103745","url":null,"abstract":"The electrode structures in ignition devices for Electrically Controlled Solid Propellants (ECSP) can be classified into fixed and movable types. In movable electrode structures, springs are typically used to push the electrodes and the propellant. The effects of spring pressure on the ignition and combustion of propellants have not yet been studied. In this paper, a universal testing machine and an electrochemical workstation were firstly utilized to investigate the compressive mechanical property and conductivity of Hydroxylamine Nitrate (HAN)-ECSP. The maximum pressure at which the propellant undergoes elastic deformation is 65 kPa. When the spring pressure increased from 5.1 kPa to 20.4 kPa, the propellant resistance decreased from 56.8 Ω to 36.8 Ω. Various observation methods were employed to study the process of electrical energy injection and the ignition and combustion characteristics under constant voltage. Appropriately increasing the spring pressure can accelerate the injection of electrical energy into the propellant, increase the electrification current, and thus reduce the initial ignition delay time of the propellant. When the spring pressure is 20.4 kPa, the squeezing speed of the propellant is too fast, making it difficult for the propellant to be adequately heated at the electrode interface, which is unfavorable for ignition. Excessive spring pressure also leads to the accumulation of a large amount of combustion residue on the electrode plate, hindering the mixing and diffusion of hot gases during the second ignition process, preventing the gaseous flame of the propellant. When the spring pressure is 5.1 kPa, improving the working voltage can enhance the repeated ignition characteristics of the propellant.","PeriodicalId":55631,"journal":{"name":"Chinese Journal of Aeronautics","volume":"39 2","pages":"103745-103745"},"PeriodicalIF":0.0,"publicationDate":"2025-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147892047","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Fine interfacial control mechanism of ammonium perchlorate and aluminum powder: Thermal reaction characteristics and kinetic studies 高氯酸铵与铝粉的精细界面控制机理：热反应特性及动力学研究

1区工程技术

Chinese Journal of Aeronautics Pub Date : 2025-07-15 DOI: 10.1016/j.cja.2025.103664

Jun Liu, Tianyu Yang, Yi Xiao, Qi‐Long Yan, Yunlan Sun

{"title":"Fine interfacial control mechanism of ammonium perchlorate and aluminum powder: Thermal reaction characteristics and kinetic studies","authors":"Jun Liu, Tianyu Yang, Yi Xiao, Qi‐Long Yan, Yunlan Sun","doi":"10.1016/j.cja.2025.103664","DOIUrl":"https://doi.org/10.1016/j.cja.2025.103664","url":null,"abstract":"To gain insight into the fine interfacial control mechanism exhibited by oxidant-coated Al powder to improve combustion performance, we prepared Al/AP and Al@AP composite fuels using ball milling and spray-drying technology. The thermal reaction characteristics, AP decomposition behavior, and decomposition reaction pathways of Al/AP and Al@AP composite fuels were investigated using thermal analysis and Ab Initio Molecular Dynamics (AIMD) calculations. Under the influence of fine interfacial control, the low-temperature decomposition heat release peak of AP was delayed by 25.5 °C, while the high-temperature decomposition peak was advanced by 36.2 °C, leading to an increase in the decomposition heat release of AP from 410.7 J/g to 1 068.7 J/g. Compared to the unclad structure, the apparent activation energy of AP in low-temperature decomposition increased, and slightly decreased during high-temperature decomposition in the Al@AP composite fuel. The physical model of AP decomposition shifted to the model with higher degrees of freedom and a faster diffusion rate, characterized by rapid bidirectional diffusion at the interface. Furthermore, due to fine interfacial control, the oxidation reaction pathway of Al has been altered, changing from the final products of AP decomposition (O 2 , Cl 2 , etc.) to the direct oxidation of AP decomposition intermediates (HClO, ClO 2 , etc.). This accelerated and strengthened the oxidation reaction process of Al. As a result of these performance improvements, the final combustion temperature of Al@AP in the Microcanonical Ensemble (NVE) system stabilized at 2 370 K, which is significantly higher than 1 400 K observed for Al/AP, indicating enhanced ignition and combustion performance.","PeriodicalId":55631,"journal":{"name":"Chinese Journal of Aeronautics","volume":"38 10","pages":"103664-103664"},"PeriodicalIF":0.0,"publicationDate":"2025-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147912413","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Constructing quasi-vertical epoxy-pins at bonding interface to improve bonding strength of aluminum alloy and carbon fiber reinforced plastics 在铝合金与碳纤维增强塑料的结合界面处构建准垂直环氧销，提高其结合强度

1区工程技术

Chinese Journal of Aeronautics Pub Date : 2025-06-27 DOI: 10.1016/j.cja.2025.103654

Jinheng Zhang, Fei Cheng, Shihao Zuo, Wenyi Huang, Y. Y. Ji, Guangming Yang, Jiaxin He, Sidra Ashfaq, Gang TAO, Boris Fedulov, Alexey Fedorenko, Hao Liu, Xiaozhi Hu

{"title":"Constructing quasi-vertical epoxy-pins at bonding interface to improve bonding strength of aluminum alloy and carbon fiber reinforced plastics","authors":"Jinheng Zhang, Fei Cheng, Shihao Zuo, Wenyi Huang, Y. Y. Ji, Guangming Yang, Jiaxin He, Sidra Ashfaq, Gang TAO, Boris Fedulov, Alexey Fedorenko, Hao Liu, Xiaozhi Hu","doi":"10.1016/j.cja.2025.103654","DOIUrl":"https://doi.org/10.1016/j.cja.2025.103654","url":null,"abstract":"This study focused on the various surface treatments of grinding, NaOH etching, HCl pickling, micro-arc oxidation and anodic oxidation to strengthen adhesive bonding joint of Aluminum (Al) substrate and Carbon Fiber Reinforced Plastics (CFRP). Different surface conditions were created by these treatments and simple Resin Pre-Coating (RPC) technique was further used to reduce the potential void defects at the root of those micro-cavities. Carbon Nanotubes (CNTs) were guided into the etched micro-cavities to construct quasi-Z-directional fiber bridging and form the “CNT-reinforced epoxy-pins”. The surface performance testing results imply that anodic oxidation of Al substrate created relatively even and continuous channels with higher hardness and better wettability among these treatments, which could provide quasi-vertical spaces for containing epoxy adhesive or CNTs. The single lap shear test results show combined treatments of anodic oxidation and upgraded RPC with CNTs technique on Al substrate yielded the highest bonding strength of 21.8 MPa (up to 243.3% greater than base strength). The constructed through-the-thickness “epoxy-pins” or “CNT-reinforced epoxy-pins” contributed to failure modes changing from complete debonding failure of Al substrate to peeled-off shallow fiber or delamination failure of CFRP panel. The combined treatments could be utilized to manufacture high-performance Al-CFRP composites for aviation industry application.","PeriodicalId":55631,"journal":{"name":"Chinese Journal of Aeronautics","volume":"38 9","pages":"103654-103654"},"PeriodicalIF":0.0,"publicationDate":"2025-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147897667","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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: 1

Polydopamine based interfacial adhesion enhancement of Ti/CF/PEEK hybrid laminates 聚多巴胺增强Ti/CF/PEEK复合层压板的界面粘附性

1区工程技术

Chinese Journal of Aeronautics Pub Date : 2025-06-19 DOI: 10.1016/j.cja.2025.103632

D.‐W. Yuan, Yong Li, Z.M. Jiao, Dongxu Yan, Yanhong Hu, Dong‐Sheng Li

引用次数: 1

Comparative study of Fe(II)/Fe(III) ions reaction in electrochemical polarization process of 304 stainless steel in H2SO4 and bipyridine solutions employing experimental and density functional theory methods 采用实验和密度泛函理论方法对304不锈钢在H2SO4和联吡啶溶液中Fe(II)/Fe（III）离子电化学极化过程中的反应进行比较研究

1区工程技术

Chinese Journal of Aeronautics Pub Date : 2025-04-11 DOI: 10.1016/j.cja.2025.103535

Jiantao Qi, Yong Zhu, Hao Ren, Daeun Yu, Guixue Bian, Peijuan Li, Tie Li, Shijian Chen

{"title":"Comparative study of Fe(II)/Fe(III) ions reaction in electrochemical polarization process of 304 stainless steel in H2SO4 and bipyridine solutions employing experimental and density functional theory methods","authors":"Jiantao Qi, Yong Zhu, Hao Ren, Daeun Yu, Guixue Bian, Peijuan Li, Tie Li, Shijian Chen","doi":"10.1016/j.cja.2025.103535","DOIUrl":"https://doi.org/10.1016/j.cja.2025.103535","url":null,"abstract":"Localized corrosion of 304 stainless steel being the significant parts of Starship rocket seriously threatens the long-term service of such aerospace equipment. Scanning electron microscopy, in situ instruments combining electrochemical workstation and Raman spectroscopy, and Density Dunctional Theory (DFT) calculations were employed. The surface morphologies, alloying elements, molecular fingerprint Raman evidence and theoretical mechanism for the localized corrosion of 304 stainless steel during the electrochemical polarization in the mixture solutions containing 0.5 mol/L H 2 SO 4 and 2, 2′-bipyridine (bipy) with concentrations of 0.001, 0.010, 0.100 mol/L were discussed. In comparison, the presence of bipy up to 0.100 mol/L in such mixture solutions displayed the neglectable effect on the Fe(II)/Fe(III) reaction in the polarization process. Raman vibrational frequency around 1 492 cm −1 was the evidence of pink color appearance due to the formation of [Fe II (bipy) 3 ] 2+ . Raman and DFT indicated the yellow color emergence due to the presence of μ-O-[Fe III (bipy) 2 (H 2 O)] 2 4+ due to the oxidation reaction of [Fe II (bipy) 3 ] 2+ with H 2 O 2 oxidant, and the dimerization of [Fe III (bipy) 3 ] 3+ . Furthermore, a quantitative model between [Fe II (bipy) 3 ] 2+ concentration and Raman intensity at 1 492 cm −1 has been built up. Two linear functions were revealed when [Fe II (bipy) 3 ] 2+ concentrations were at 0–0.002 mol/L and 0.002–0.004 mol/L and a concentration error of less than 5% was evidenced in comparison with that investigated by the inductively coupled plasma. The proposed passivation mechanism and quantitative concentration model of 304 stainless steel have certain significance for its corrosion protection and corrosion evaluation.","PeriodicalId":55631,"journal":{"name":"Chinese Journal of Aeronautics","volume":"38 6","pages":"103535-103535"},"PeriodicalIF":0.0,"publicationDate":"2025-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147331501","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Deflagration and detonation induced by shock wave focusing at different Mach numbers 不同马赫数激波聚焦引起的爆燃与爆轰

IF 5.7 1区工程技术

Chinese Journal of Aeronautics Pub Date : 2024-02-01 Epub Date: 2023-06-28 DOI: 10.1016/j.cja.2023.06.029

Zezhong YANG, Jun CHENG, Bo ZHANG

{"title":"Deflagration and detonation induced by shock wave focusing at different Mach numbers","authors":"Zezhong YANG, Jun CHENG, Bo ZHANG","doi":"10.1016/j.cja.2023.06.029","DOIUrl":"10.1016/j.cja.2023.06.029","url":null,"abstract":"<div><p>Shock wave focusing is an effective way to create a hot spot or a high-pressure and high-temperature region at a certain place, showing its unique usage in detonation initiation, which is beneficial for the development of detonation-based engines. The flame propagation behavior after the autoignition induced by shock wave focusing is crucial to the formation and self-sustaining of the detonation wave. In this study, wedge reflectors with two different angles (60° and 90°) and a planar reflector are employed, and the Mach number of incident shock waves ranging from 2.0 to 2.8 is utilized to trigger different flame propagation modes. Dynamic pressure transducers and the high-speed schlieren imaging system are both employed to investigate the shock-shock collision and ignition procedure. The results reveal a total of four flame propagation modes: deflagration, DDT (Deflagration-to-Detonation Transition), unsteady detonation, and direct detonation. The detonation wave formed in the DDT and unsteady detonation mode is only approximately 75%−85% of the Chapman-Jouguet (C-J) speed; meanwhile, the directly induced detonation wave speed is close to the C-J speed. Transverse waves, which are strong evidence for the existence of detonation waves, are discovered in experiments. The usage of wedge reflectors significantly reduces the initial pressure difference ratio needed for direct detonation ignition. We also provide a practical method for differentiating between detonation and deflagration modes, which involves contrasting the speed of the reflected shock wave with the speed of the theoretically nonreactive reflected shock wave. These findings should serve as a reference for the detonation initiation technique in advanced detonation propulsion engines.</p></div>","PeriodicalId":55631,"journal":{"name":"Chinese Journal of Aeronautics","volume":"37 2","pages":"Pages 249-258"},"PeriodicalIF":5.7,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1000936123002157/pdfft?md5=325ee889a9a43d90fec1c361698c643a&pid=1-s2.0-S1000936123002157-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41955035","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Modified constitutive models for Inconel 718 considering current density and temperature in electrically assisted forming process 考虑到电辅助成形工艺中的电流密度和温度的因科镍合金 718 修正构成模型

IF 5.7 1区工程技术

Chinese Journal of Aeronautics Pub Date : 2024-02-01 Epub Date: 2023-12-06 DOI: 10.1016/j.cja.2023.12.007

Xuan CUI , Rui ZHAO , Min WAN

{"title":"Modified constitutive models for Inconel 718 considering current density and temperature in electrically assisted forming process","authors":"Xuan CUI , Rui ZHAO , Min WAN","doi":"10.1016/j.cja.2023.12.007","DOIUrl":"10.1016/j.cja.2023.12.007","url":null,"abstract":"<div><p>Electrically Assisted Forming (EAF) technology has obvious advantages in material forming. To develop an effective constitutive model considering electrical effects, room temperature and electrically assisted quasi-static uniaxial tensile tests were conducted using ultrathin nickel-based superalloy plates with a thickness of 0.25 mm. The research focused on the two most widely recognized effects: the Joule thermal and the electric athermal effects. The mechanism of current action can be divided into two scenarios: one considering the Joule thermal effect only, and the other considering both effects simultaneously. Two basic constitutive models, namely the Modified-Hollomon model and the Johnson-Cook (J-C) model, were selected to be optimized through the classification of two different situations, and four optimized constitutive models were proposed. It was found that the J-C model with simultaneous consideration of the Joule thermal effect and electric athermal effect had the best prediction effect by comparing the results of these four models. Finally, the accuracy of the optimization model was verified by finite element simulation of the electrically assisted stretching optimization model. The results show that the constitutive model can effectively predict the temperature effect caused by the Joule heat effect and the athermal effect of current on the material.</p></div>","PeriodicalId":55631,"journal":{"name":"Chinese Journal of Aeronautics","volume":"37 2","pages":"Pages 524-540"},"PeriodicalIF":5.7,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1000936123004223/pdfft?md5=02a31cbd1101b94a6e60652934fbc930&pid=1-s2.0-S1000936123004223-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138613987","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Influence of bolt dynamic installation on topography characteristics and mechanical behaviors of CFRP interference-fit bolted joints 螺栓动态安装对 CFRP 过盈配合螺栓连接的形貌特征和力学行为的影响

IF 5.7 1区工程技术

Chinese Journal of Aeronautics Pub Date : 2024-02-01 Epub Date: 2023-11-09 DOI: 10.1016/j.cja.2023.11.004

Xiaohe WANG , Zengqiang CAO , Yuehaoxuan WANG , Yingjiang GUO

{"title":"Influence of bolt dynamic installation on topography characteristics and mechanical behaviors of CFRP interference-fit bolted joints","authors":"Xiaohe WANG , Zengqiang CAO , Yuehaoxuan WANG , Yingjiang GUO","doi":"10.1016/j.cja.2023.11.004","DOIUrl":"10.1016/j.cja.2023.11.004","url":null,"abstract":"<div><p>As the controlled research of Dynamic Installation (DI) and Static Installation (SI), a new interference installation method was developed based on electromagnetic loading to enhance the mechanical properties of composite structures. Four different interference-fit sizes were considered, ranging from a net fit to 2.0%. The experiments were conducted to evaluate the installation resistance and the mechanical behavior of the joint under external loads. Meanwhile, an FEA model to model the stress distribution and damage behavior of the bolt-hole contact interface was established. The load–displacement curve and damage modes of experiments were used to verify the FEA results. The results show that the installation resistance during DI process was remarkably lower than that of SI process corresponding to all interference-fit sizes, and the stress amplitudes induced by interference were larger and widely distributed. The damage of the hole wall was positively correlated with interference fit size, but DI can significantly reduce the damage compared to SI. In performance tests, DI enhanced the static bearing capacity and extended longer fatigue life of the joints than SI. DI methods can be an effective way to achieve highly reliable interference joints in composite structures.</p></div>","PeriodicalId":55631,"journal":{"name":"Chinese Journal of Aeronautics","volume":"37 2","pages":"Pages 482-500"},"PeriodicalIF":5.7,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1000936123003886/pdfft?md5=89cd039e8e4f3d83322005eddc6479cd&pid=1-s2.0-S1000936123003886-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135566905","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Numerical investigation on characteristics of interfacial wave of liquid film in gas–liquid two-phase flow using OpenFOAM 基于OpenFOAM的气液两相流液膜界面波特性数值研究

IF 5.7 1区工程技术

Chinese Journal of Aeronautics Pub Date : 2024-02-01 Epub Date: 2023-08-20 DOI: 10.1016/j.cja.2023.08.010

Xiaoqi MA, Yueshe WANG, Jiaming TIAN

{"title":"Numerical investigation on characteristics of interfacial wave of liquid film in gas–liquid two-phase flow using OpenFOAM","authors":"Xiaoqi MA, Yueshe WANG, Jiaming TIAN","doi":"10.1016/j.cja.2023.08.010","DOIUrl":"10.1016/j.cja.2023.08.010","url":null,"abstract":"<div><p>Liquid film cooling as an advanced cooling technology is widely used in space vehicles. Stable operation of liquid film along the rocket combustion inner wall is crucial for thermal protection of rocket engines. The stability of liquid film is mainly determined by the characteristics of interfacial wave, which is rarely investigated right now. How to improve the stability of thin film has become a hot spot. In view of this, an advanced model based on the conventional Volume of Fluid (VOF) model is adopted to investigate the characteristics of interfacial wave in gas–liquid flow by using OpenFOAM, and the mechanism of formation and development of wave is revealed intuitively through numerical study. The effects from gas velocity, surface tension and dynamic viscosity of liquid (three factors) on the wave are studied respectively. It can be found that the gas velocity is critical to the formation and development of wave, and four modes of droplets generation are illustrated in this paper. Besides, a gas vortex near the gas–liquid interface can induce formation of wave easily, so changing the gas vortex state can regulate formation and development of wave. What’s more, the change rules of three factors influencing on the interfacial wave are obtained, and the surface tension has a negative effect on the formation and development of wave only when the surface tension coefficient is above the critical value, whereas the dynamic viscosity has a positive effect in this process. Lastly, the maximum height and maximum slope angle of wave will level off as the gas velocity increases. Meanwhile, the maximum slope angle of wave is usually no more than 38°, no matter what happens to the three factors.</p></div>","PeriodicalId":55631,"journal":{"name":"Chinese Journal of Aeronautics","volume":"37 2","pages":"Pages 233-248"},"PeriodicalIF":5.7,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1000936123002856/pdfft?md5=4eded4c85f8515908266913b8b9f352f&pid=1-s2.0-S1000936123002856-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48178922","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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