International Journal of Heat and Fluid Flow最新文献

{"title":"To what extent does local oscillation influence the thermal performance of finned PCM-based energy storage systems: A numerical study","authors":"Amir Hossein Vakilzadeh ,&nbsp;Amirhossein Bagheri Sarvestani ,&nbsp;Kourosh Javaherdeh ,&nbsp;Reza Kamali ,&nbsp;Satyam Panchal","doi":"10.1016/j.ijheatfluidflow.2025.109798","DOIUrl":"10.1016/j.ijheatfluidflow.2025.109798","url":null,"abstract":"<div><div>Enhancing the thermal performance of phase change materials (PCMs) is vital for improving the efficiency of energy storage systems. While fins are widely used to expedite the melting process by boosting thermal conductivity, their effectiveness diminishes as melting progresses and natural convection becomes dominant. Meanwhile, local mechanical oscillation has emerged as a promising technique to further accelerate melting, though its isolated use has been the primary focus of prior studies. The combined effect of fins and local oscillation, particularly their interaction in influencing the heat transfer dynamics of PCM, remains unexplored. Thus, this study develops a numerical model to investigate the interaction between various fin configurations (namely, sinusoidal, and positive/negative straight fins) and local oscillation within a finned rectangular enclosure. Moreover, the local oscillator’s placement on the hot wall, as well as its proximity to the fins, are among key factors analyzed. The results demonstrate that negative rectangular fins consistently deliver superior thermal performance, while the effectiveness of local oscillation diminishes when placed between fins, particularly as the melting front progresses. The optimal configuration is a vertical oscillator positioned at the base of the hot wall near a negative fin, which achieves a 64.3 % reduction in melting time. Notably, as the lower fin is installed closer the bottom wall of the enclosure, two distinct mechanisms arising from extension of the heating area and local flow stimulation by the oscillator plate, though differing fundamentally, result in similar effects during the later stages of the melting process, thereby diminishing the overall influence of localized oscillation on the melting process.</div></div>","PeriodicalId":335,"journal":{"name":"International Journal of Heat and Fluid Flow","volume":"114 ","pages":"Article 109798"},"PeriodicalIF":2.6,"publicationDate":"2025-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143611585","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Experimental study of the flow pattern and heat transfer characteristics of the refrigerant flow condensation through metal foam inserts","authors":"Mohamad Vahid Rafieinejad ,&nbsp;Rasool Mohammadi ,&nbsp;Mohammad Ali Akhavan-Behabadi ,&nbsp;Behrang Sajadi","doi":"10.1016/j.ijheatfluidflow.2025.109801","DOIUrl":"10.1016/j.ijheatfluidflow.2025.109801","url":null,"abstract":"<div><div>Metal foams have shown remarkable effects on heat transfer improvement in diabatic two-phase flows, especially for refrigeration applications. The present experimental study addresses the flow condensation regimes and characteristics of R134a in 10 PPI and 20 PPI copper foam inserts inside 8 mm i.d. tubes. The flow pattern maps were extracted under uniform wall temperature boundary conditions for mass flux 75–150 kg m⁻² s⁻¹. In this study, three distinct flow regimes are introduced in the presence of metal foams: stratified–wavy, wavy–annular, and annular. Although the outcomes prove that the PPI of metal foam is a determining factor for the distribution of flow patterns on the map, the stratified–wavy regime is majorly captured at low-quality and low-mass flux zones, while the annular pattern is only observable at high-quality and high-mass flux zone of the maps. The flow maps revealed that the annular to wavy–annular regime transition withdraws from a vapor quality of 0.6 to approximately 0.3 at the highest mass flux. Similarly, the wavy–annular to stratified–wavy pattern transition falls back from a quality of 0.7 to around 0.35 at the mass flux of 100 kg m⁻² s⁻¹. In addition, this research investigates how vapor quality, mass flux, and foam pore density affect heat transfer and pressure losses during condensation. An intensive correlation between heat transfer coefficient and flow variables of mass flux and vapor quality is noted. 20 PPI foam owns larger heat transfer coefficients than 10 PPI, while the pressure drop within the 20 PPI insert is significantly larger than in 10 PPI. The metal foam inserts helped enhance the heat transfer coefficient by about 220 %. The findings show that the pressure drop progressively elevates as the quality of vapor and mass flux rise. The use of copper foam inserts of 20 PPI, particularly at high vapor qualities, is beneficial in applications where heat transfer enhancement is a priority.</div></div>","PeriodicalId":335,"journal":{"name":"International Journal of Heat and Fluid Flow","volume":"114 ","pages":"Article 109801"},"PeriodicalIF":2.6,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143591552","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Characteristics of turbulent Taylor-Couette flow of low-viscosity fluid on plastron-covered superhydrophobic surface","authors":"Seongbin Ahn ,&nbsp;Sungwon Jo ,&nbsp;Woobin Song ,&nbsp;Haeyeon Lee ,&nbsp;Garam Ku ,&nbsp;Minjae Kim ,&nbsp;Dong Rip Kim ,&nbsp;Simon Song","doi":"10.1016/j.ijheatfluidflow.2025.109805","DOIUrl":"10.1016/j.ijheatfluidflow.2025.109805","url":null,"abstract":"<div><div>This study introduces a newly developed Taylor-Couette (TC) flow system designed to investigate flow dynamics in low-viscosity fluids, such as water, under fully turbulent conditions. To ensure precise drag measurements, the system accounts for mechanical friction from bearings and von Kármán torque (the torque generated by fluid motion in the gap between the end-plates of the cylinders), enabling accurate evaluation of TC torque. Utilizing exact counter-rotation conditions that produce featureless turbulence, we explored the drag reduction capabilities of a hybrid superhydrophobic surface (SHS) mounted on the inner cylinder, alongside visualizing the resultant plastron formations. For the first time, two-dimensional particle image velocimetry (2D PIV) was used near the wall to quantify drag reduction based on total shear stress derived from flow visualization on SHS in a TC flow system. The plastron-induced slip conditions led to significant shifts in bulk velocity within the TC gap. A detailed analysis of Reynolds stresses revealed substantial modifications in flow dynamics, including reduced peak Reynolds stress and increased near-wall Reynolds stress, while total shear stress decreased across the gap. Additionally, simultaneous visualization and assessment of the plastron provided novel insights into its role in enhancing drag reduction. These findings underscore the importance of accounting for bearing mechanical friction in torque measurements when using low-viscosity fluids and confirm the effectiveness of SHS in modifying turbulence for drag reduction. The results highlight the TC-PIV system’s robust capability for detailed fluid dynamics investigations and its potential to inform hydrodynamic drag reduction strategies.</div></div>","PeriodicalId":335,"journal":{"name":"International Journal of Heat and Fluid Flow","volume":"114 ","pages":"Article 109805"},"PeriodicalIF":2.6,"publicationDate":"2025-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143579883","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Bioinspired spider-web microchannel with five-input-four-output manifold: Enhanced thermal performance for 10,000 kW/m2 chip-scale embedded cooling","authors":"Jun Du ,&nbsp;Yilin Fang","doi":"10.1016/j.ijheatfluidflow.2025.109794","DOIUrl":"10.1016/j.ijheatfluidflow.2025.109794","url":null,"abstract":"<div><div>Rapid advancements in high-heat flow density electronic chips have made the enhancement of heat sink thermal performance a crucial aspect of research aimed at efficient chip cooling. This paper uses the structure of a spider web to come up with an embedded flow-shape cooling method that can remove 10,000 kW/m² of heat. The temperature rise and junction temperature must be less than 60 °C and 85 °C, respectively. We compared two heat sinks with different flow shapes. The heat sinks’ thermal resistance, pressure drop, temperature distribution, temperature rise, junction temperature, and coefficient of performance (COP) of heat dissipation at flow rates of 0.2–0.6 L/min were reported using simulation calculations. As the inlet flow rate went up, the results showed that the temperature distribution became more uniform, and the average outlet temperature, temperature rise, temperature standard deviation, and junction temperature all went down. Notably, the five-input-four-output manifold design exhibited superior heat transfer efficiency and temperature uniformity compared to single-outlet structures, with lower thermal resistance. Under high heat flux conditions, the maximum temperature standard deviation was recorded at 1.18 °C, with a minimum of just 0.2 °C. With a pressure drop of 37.3 kPa and a flow rate of 0.6 L/min, the effective thermal resistance was a mere 0.047 (cm²·°C)/W. However, it is important to note that both radiators saw a bigger pressure drop and a lower COP as a result of the increased flow rate.</div></div>","PeriodicalId":335,"journal":{"name":"International Journal of Heat and Fluid Flow","volume":"114 ","pages":"Article 109794"},"PeriodicalIF":2.6,"publicationDate":"2025-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143807364","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Design criteria and performance optimization of high-power micro heat sinks","authors":"Jiali Zhuo,&nbsp;Yuling Zhai,&nbsp;Hao Huang,&nbsp;Zhouhang Li","doi":"10.1016/j.ijheatfluidflow.2025.109797","DOIUrl":"10.1016/j.ijheatfluidflow.2025.109797","url":null,"abstract":"<div><div>A three-dimensional mathematical model of micro heat sinks was developed to achieve efficient thermal management in microelectronic devices. Comprehensive design criteria based on the theory of heat transfer enhancement at the micro-scale are also proposed. On this basis, the size of the microchannel structure is designed, considering a fixed heat transfer area and heat flux. Then, a combination of a response surface approximation, an non-dominated sorting genetic algorithm, and <em>k</em>-means clustering are used to optimize the width and height of each microchannel. The designed structure size is combined with supercritical carbon dioxide (SCO₂) working fluid to optimize the thermal performance of micro heat sinks. The optimization results demonstrated that the clustering point I of the evaluation factor <em>j</em>/<em>f</em>_ave increased by 4.11 %, while the wall temperature <em>T_w</em> decreased by 4.69 %. Compared to the SCO₂ scenario, the pump power and total entropy generation were respectively 61.63 % and 6.9 % lower than those of water with a mass flow rate of 6000 kg/m²·s and an inlet temperature of 293 K. For inlet temperatures ranging from 303 K to 307 K, the evaluation factor values reported were 0.2405, 0.2018, 0.1045, 0.1453, and 0.1747 under a pressure of 7.6 MPa and flow rate of 4000 kg/m²·s. For mass flow rates ranging from 3000 kg/m²·s to 6000 kg/m²·s, values of <em>j</em>/<em>f</em>_ave were 0.0591, 0.1045, 0.1515, and 0.2084, indicating good thermal performance at relatively high mass flow rates. It was noted that as the distance from the critical point of the channel increases, the overall heat transfer performance is improved when the inlet temperature is less than the critical temperature.</div></div>","PeriodicalId":335,"journal":{"name":"International Journal of Heat and Fluid Flow","volume":"114 ","pages":"Article 109797"},"PeriodicalIF":2.6,"publicationDate":"2025-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143579884","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Experimental visualization of dry regions formation for Falling-Film flow patterns","authors":"Prudviraj Kandukuri,&nbsp;Sandip Deshmukh,&nbsp;Supradeepan Katiresan","doi":"10.1016/j.ijheatfluidflow.2025.109803","DOIUrl":"10.1016/j.ijheatfluidflow.2025.109803","url":null,"abstract":"<div><div>Water is essential for humans in everyday life, and plenty of fresh water is required for agricultural, chemical, industrial, and other domestic uses. Water scarcity is becoming increasingly prevalent in many regions and countries as they advance their respective growth lines. The predominant method employed in thermal desalination plants is the falling-film process due to its operational advantages. The present study examines<!--> <!-->the mapping of diverse flow patterns for heat transfer mechanisms across the horizontal tube bundle. An experimental test facility is developed, and a series of visualization experiments are conducted. The FLIR E60 infrared camera is employed to examine the liquid film behavior for different temperature profiles. The findings revealed that the droplet flow pattern induces wave-like wetting, whereas the column flow pattern induces liquid ring wetting on the tube wall. The tube wall temperature attains its maximum during droplet flow, regardless of the chosen tube spacing values. When the tube spacing is 10/20/30/40 mm, the maximum temperature of the liquid film is reached rapidly in the droplet flow, reaching values of 75.7 °C, 73 °C, 79.1 °C, 65.8 °C, 76.5 °C, 71.4 °C, 69.3 °C, and 74.2 °C, respectively, in comparison to other flow modes. The infrared photographic images show that the stabilizing tube has a faster heat transfer mechanism than the test tube. Furthermore, the liquid profile on the upper portion of the tube wall exhibits a faster evaporation rate than the lower one. The formation of dry spots on the test tubes and stabilizing tubes exhibited a distinct pattern due to<!--> <!-->distinct flow mode wetting phenomena for chosen working conditions. The research findings address various aspects of information on falling-film flow behavior and mapping of flow patterns to heat transfer mechanisms.</div></div>","PeriodicalId":335,"journal":{"name":"International Journal of Heat and Fluid Flow","volume":"114 ","pages":"Article 109803"},"PeriodicalIF":2.6,"publicationDate":"2025-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143548914","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"GMDH and RSM models for prediction of heat transfer parameters in an ultrasonic vibrating fin-and-tube heat exchanger","authors":"M. Esfandyari ,&nbsp;H. Sajjadi ,&nbsp;A. Amiri Delouei","doi":"10.1016/j.ijheatfluidflow.2025.109795","DOIUrl":"10.1016/j.ijheatfluidflow.2025.109795","url":null,"abstract":"<div><div>This study employed the Group Method of Data Handling (GMDH) and Response Surface Methodology (RSM) to predict key heat transfer parameters, including the Nusselt number (Nu), outlet temperature, heat flow, and convective heat transfer coefficient in a fin-and-tube heat exchanger (FTHX) subjected to ultrasonic vibrations. Experimental investigations were conducted with varying inlet temperatures (10–140 °C), flow rates (2–6 l/min), air velocities (0.1–4 m/s), and ultrasonic power levels (0 or 50 W). The models’ accuracy was validated against experimental data, showing high correlation coefficients exceeding 0.98. The GMDH model slightly outperformed the RSM model. The maximum absolute average relative error (AARE) was 0.0633, demonstrating the models’ precision. These findings provide valuable insights for optimizing thermal systems and enhancing heat transfer efficiency in heat exchangers through ultrasonic vibration.</div></div>","PeriodicalId":335,"journal":{"name":"International Journal of Heat and Fluid Flow","volume":"114 ","pages":"Article 109795"},"PeriodicalIF":2.6,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143535410","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Study on the influence of tube type and fluid flow channel on cooling heat transfer characteristics of supercritical CO2 in spirally grooved casing tubes","authors":"Dong Wang ,&nbsp;Rongrong Zhou ,&nbsp;Mengxue Li ,&nbsp;Kangkang Zhang ,&nbsp;Zilong Wang ,&nbsp;Kang Li ,&nbsp;Huaqiang Chu","doi":"10.1016/j.ijheatfluidflow.2025.109804","DOIUrl":"10.1016/j.ijheatfluidflow.2025.109804","url":null,"abstract":"<div><div>This study investigates the heat transfer characteristics of supercritical CO₂ (SCO₂) in five different spirally grooved casing tubes and proposes a comprehensive evaluation factor to assess their overall performance, aiming to improve heat exchanger efficiency through optimizing tube designs. The Finite Volume Method is employed to simulate and compare five different spirally grooved configurations: three-start circular arc (Case A), four-start circular arc (Case B), four-start trapezoidal (Case C), four-start triangular (Case D), and six-start circular arc (Case E). The results show that when SCO₂ flows through the channel between the inner and outer tubes (channel 1), Case E exhibits the highest heat transfer coefficient, with a value of 2537.91 W·(m²·K)⁻¹. This is significantly higher than the other designs, with a maximum increase of 19.20 %, demonstrating its optimal performance in enhancing heat transfer efficiency. In the inner tube channel (channel 2), the average heat transfer coefficients for Case D and Case E are approximately equal, around 2410 W·(m²·K)⁻¹, which is 3.22 % higher on average than the other three designs, indicating impressive potential for optimizing the groove shape in channel 2. The pattern of SCO₂ flowing in channel 2 can effectively reduce the pressure drop gradient, with a maximum reduction of 27.60 %, thereby significantly improving the safety of the system. The flow pattern of SCO₂ in channel 2 of Case A exhibits the optimal comprehensive evaluation factor value (2.03). These scientific findings provide conducive insights for optimizing design of the SCO₂ heat exchangers.</div></div>","PeriodicalId":335,"journal":{"name":"International Journal of Heat and Fluid Flow","volume":"114 ","pages":"Article 109804"},"PeriodicalIF":2.6,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143548915","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Pore distribution and permeability principles for carbon fiber reinforced silicon carbide matrix composites with three-dimensional needled preform during the transpiration cooling process","authors":"Tao Ding ,&nbsp;Xiaoxuan Chen ,&nbsp;Ling Zhao ,&nbsp;Hainan Zhang ,&nbsp;Tian Zhao ,&nbsp;Chaoyi Zhu ,&nbsp;Shiyu Qian ,&nbsp;Lingyun hou ,&nbsp;Yi Zhang ,&nbsp;Litong Zhang","doi":"10.1016/j.ijheatfluidflow.2025.109799","DOIUrl":"10.1016/j.ijheatfluidflow.2025.109799","url":null,"abstract":"<div><div>Transpiration cooling problem in carbon fiber reinforced silicon carbide matrix composites (C/SiC) was studied based on the context of cooling of jet engine hot-end components. Pore distributions of C/SiC with different fiber preforms were compared, and the C/SiC with three-dimensional needled preform (3DN C/SiC) was selected. The pore structure of 3DN C/SiC was analyzed and studied by X-ray computed tomography scanning (CT), and its porosity was obtained based on the Archimedes’ principle. Finally, based on the Darcy–Forchheimer model, the pressure drop–flow rate curve was obtained and the permeability of 3DN C/SiC was calculated. By considering the influence of inertia and viscous forces, the characteristics and mechanism of the porous media flow inside 3DN C/SiC were analyzed. The results showed that 3DN C/SiC could achieve a permeability of 3.37 × 10^–12 m² under a porosity of 47.61 %, which was close to that of commonly used metal porous media. 3DN C/SiC also demonstrated good flow characteristics as a porous medium. Considering its other advantages, such as high temperature resistance, light weight, and high specific strength, 3DN C/SiC has excellent potential and prospects in jet-engine thermal protection systems.</div></div>","PeriodicalId":335,"journal":{"name":"International Journal of Heat and Fluid Flow","volume":"114 ","pages":"Article 109799"},"PeriodicalIF":2.6,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143548916","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"RANS investigation of incoming vortex on the tip leakage vortex breakdown in an aspirated compressor cascade","authors":"Xi Gao,&nbsp;Zhiyuan Cao,&nbsp;Bo Liu","doi":"10.1016/j.ijheatfluidflow.2025.109796","DOIUrl":"10.1016/j.ijheatfluidflow.2025.109796","url":null,"abstract":"<div><div>Boundary layer suction is an efficient method for mitigating flow separation and enhancing the performance of a highly loaded compressor cascade. Nevertheless, in a compressor cascade with tip clearance, the high adverse-pressure gradient induced by suction can exert a negative impact on tip leakage vortex (TLV), leading to tip leakage vortex breakdown (TVB). In order to control TVB and enhance its performance, a vortex generator (VG) has been employed in an aspirated compressor cascade. The effect of the swirling direction of the incoming vortex induced by VG, suction flow rate, tip clearance size, and solidity were also investigated. The results reveal that TVB can occur even in a conventional compressor cascade with suction. For the newly designed compressor cascade, TVB can occur without suction, and the introduction of suction enhances TVB. After introducing an incoming vortex, TVB in the aspirated compressor cascade with suction is eliminated. The loss in the aspirated compressor cascade is reduced by 47.1% compared to that in the newly designed compressor cascade. The incoming vortex further reduces the loss by 1% compared to the aspirated compressor cascade due to the suppression of TVB. This outcome can be attributed to the fact that a co-rotating incoming vortex increases the core axial velocity of TLV and reduces its strength, thereby enabling TLV to withstand the high adverse pressure gradient induced by suction. It is worth noting that a counter-rotating incoming vortex enhances TVB, making it an unsuitable design for controlling TVB.</div></div>","PeriodicalId":335,"journal":{"name":"International Journal of Heat and Fluid Flow","volume":"114 ","pages":"Article 109796"},"PeriodicalIF":2.6,"publicationDate":"2025-03-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143527210","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}