International Journal of Thermal Sciences最新文献

{"title":"Study on the influence of advancing speed on the dynamic distribution laws of spontaneous combustion hazard zones and high-temperature points in goaf areas","authors":"Xin Luo ,&nbsp;Mingyun Tang ,&nbsp;Shiqiang Gao ,&nbsp;Liang Zhou ,&nbsp;Jian Wang ,&nbsp;Dayong Luo ,&nbsp;Ruiqin Zhang","doi":"10.1016/j.ijthermalsci.2024.109559","DOIUrl":"10.1016/j.ijthermalsci.2024.109559","url":null,"abstract":"<div><div>Spontaneous combustion of coal occurs when arising from a combination of factors, including oxidation and heating of residual coal in goaf and favorable heat retention conditions, and the spontaneous combustion hazard zones and high-temperature points formed exhibit dynamic, concealed, and three-dimensional characteristics, further complicating the on-site prevention and control of coal spontaneous combustion. Therefore, it is particularly important to study the dynamic evolution of coal spontaneous combustion (CSC) hazard areas in the goaf during the working face advancement process. With 010803 working face of Wang Wa Coal Mine for reference, the paper develops a three-dimensional Multiphysics coupling model of the goaf through field tests, laboratory experiments, and numerical simulations. For the first time, three-dimensional dynamic mesh technology is employed to investigate the spatial dynamic variation laws of spontaneous combustion hazard zones in goaf areas under advancing speeds ranging from 2 to 8 m/day. The results indicate that the relative error between simulated leakage airflow and field measurements is 1.4 %. As the advancing speed of the working face increases, the oxidation zone in the goaf shifts deeper, and its area increases linearly, though the rate of increase gradually decreases. With higher advancing speeds, the temperature of the high-temperature points in the goaf decreases, and the distances of these points from the lower corner of the working face grow exponentially in both strike and dip directions. However, the high-temperature points remain within the oxidation zone, with their strike migration ranging from 86.3 to 149 m and dip migration from 44 to 51 m. Based on this analysis, a spatial distribution function for high-temperature points in goaf areas is proposed. This study provides theoretical support for preventing and controlling coal spontaneous combustion in goaf areas.</div></div>","PeriodicalId":341,"journal":{"name":"International Journal of Thermal Sciences","volume":"210 ","pages":"Article 109559"},"PeriodicalIF":4.9,"publicationDate":"2024-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142705369","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Quantifying the electrocaloric effect in multilayer capacitors using the Clausius–Clapeyron method","authors":"Youri Nouchokgwe ,&nbsp;Pierre Lheritier ,&nbsp;Hugo Aramberri ,&nbsp;Alvar Torello ,&nbsp;Tomoyasu Usui ,&nbsp;Sakyo Hirose ,&nbsp;Veronika Kovacova ,&nbsp;Emmanuel Defay","doi":"10.1016/j.ijthermalsci.2024.109520","DOIUrl":"10.1016/j.ijthermalsci.2024.109520","url":null,"abstract":"<div><div>The electrocaloric effect arises from changes in entropy due to changes in electric field. This effect is particularly significant at the transition temperature of first-order transition materials such as lead scandium tantalate. In this study, we measured the transition isothermal entropy change of this material in the form of multilayer capacitors using the Clausius–Clapeyron method. The transition entropy was determined by analyzing the field dependence of the transition temperature and the transition jump in polarization. As a result, our lead scandium multilayer capacitors demonstrated a transition entropy change of 2.7<!--> <!-->J<!--> <!-->kg⁻¹ <!-->K⁻¹. This value is consistent with previously reported values and is in line with the thermally driven entropy change of 2.4<!--> <!-->J<!--> <!-->kg⁻¹ <!-->K⁻¹.</div></div>","PeriodicalId":341,"journal":{"name":"International Journal of Thermal Sciences","volume":"210 ","pages":"Article 109520"},"PeriodicalIF":4.9,"publicationDate":"2024-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142705370","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhancement of heat transfer using elliptical twisted inner pipe with convergent conical ring turbulator for turbulent flow in double pipe heat exchanger","authors":"Rizvi Arefin Rinik,&nbsp;Arafat Ahmed Bhuiyan,&nbsp;Md. Rezwanul Karim","doi":"10.1016/j.ijthermalsci.2024.109558","DOIUrl":"10.1016/j.ijthermalsci.2024.109558","url":null,"abstract":"<div><div>This study focuses on evaluating the impact of a fully twisted inner pipe along with conical rings turbulator by conducting a numerical analysis of the double-pipe heat exchanger (DPHE), considering both parallel and counterflow configurations for heat transfer. As modification, a straight elliptical pipe compared with two other pipes with three twists and full twists along their lengths is also investigated to compute the heat transfer rate, pressure drop, and turbulence characteristics. Modelling has been performed using ANSYS Fluent, considering the RNG k-ε turbulence model. The regime of turbulent flow is studied within the range of Reynolds numbers from 5,000 to 26,000. Validation has been conducted comparing with the experimental studies, and reasonable agreement has been observed. The full twists effect generates a swirling motion, and conical rings are inserted inside the outer pipe as a passive turbulator to guide the flow towards the inner pipe, where the hot fluid passes. Comparing the results, the inner twisted pipe with the conical ring exhibits a significant improvement in the Nusselt number (<span><math><mrow><mi>N</mi><mi>u</mi></mrow></math></span>), reaching 445 in the counterflow direction with the six rings. The evaluation of entropy generation is described as a function of frictional and thermal contributions. According to the findings, turbulators slightly increase entropy development. Analysis of total entropy generation shows that, because of the high viscosity, frictional entropy generation is dominant. Also, when the vortex flow becomes stronger, the total entropy creation rate decreases down. The Performance Evaluation Criteria (PEC) is also greater than 1 for both parallel and counterflow flow, indicating that enhancement of the rate of heat transfer, outweighs the decrease in pressure drop. Particularly in counterflow directions the PEC is 2.3 which is impressive. Overall, full twists along the pipe lengths enhance the heat exchanger's performance, and full twists with six conical rings fortify most in both flow directions.</div></div>","PeriodicalId":341,"journal":{"name":"International Journal of Thermal Sciences","volume":"210 ","pages":"Article 109558"},"PeriodicalIF":4.9,"publicationDate":"2024-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142705368","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A novel model for the dynamics and evaporation of water droplets with deformation considerations","authors":"Xiaowang Zhao ,&nbsp;Yulong Li ,&nbsp;Han Zhang","doi":"10.1016/j.ijthermalsci.2024.109555","DOIUrl":"10.1016/j.ijthermalsci.2024.109555","url":null,"abstract":"<div><div>Accurate calculation of water droplet dynamics and evaporation are essential for effective forest firefighting. This study proposes a novel model for the dynamics and evaporation of water droplets by integrating a new Deformation Correction (DC) drag model with the optimal infinite thermal conductivity (ITC) liquid and the Ranz and Marshall (RM) gas phase model. The new DC drag model innovatively combines a semi-theoretical deformation correlation with a drag correction correlation. The terminal velocity predicted by the DC model closely aligns with the experimental data for falling water droplets, whereas other traditional models show significant deviations for large-diameter (&gt;2 mm) droplets. Additionally, a critical deformation Weber number, <em>We</em>_d,crit = 2.5, is defined to determine whether droplet deformation should be considered. Three common liquid and gas phase models are evaluated based on empirical studies conducted in high-temperature airflow conditions (300–500 °C). The results indicate that the ITC model and RM model perform best in predicting water droplet evaporation rates, and the mechanism by which these models influence evaporation through the regulation of <em>B</em>_M and <span><math><mrow><mfrac><mrow><mi>S</mi><mi>h</mi></mrow><msub><mi>r</mi><mi>s</mi></msub></mfrac></mrow></math></span> numbers is also elucidated. Consequently, the model incorporating the new DC drag model, ITC liquid phase model, and RM gas phase model is identified to be the optimal model for predicting droplet dynamics and evaporation. For the simulation case of a water droplet drifting in hot updraft, the maximum prediction deviations of other models with different combinations relative to the optimal model are 15.3 % for drift distance and 40.1 % for evaporation ratio.</div></div>","PeriodicalId":341,"journal":{"name":"International Journal of Thermal Sciences","volume":"210 ","pages":"Article 109555"},"PeriodicalIF":4.9,"publicationDate":"2024-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142705372","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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 and machine learning insights on heat transfer and friction factor analysis of novel hybrid nanofluids subjected to constant heat flux at various mixture ratios","authors":"Praveen Kumar Kanti ,&nbsp;V. Vicki Wanatasanappan ,&nbsp;Prabhakar Sharma ,&nbsp;Nejla Mahjoub Said ,&nbsp;K.V. Sharma","doi":"10.1016/j.ijthermalsci.2024.109548","DOIUrl":"10.1016/j.ijthermalsci.2024.109548","url":null,"abstract":"<div><div>This study explores the combined effects of aluminum oxide (Al₂O₃)/graphene oxide (GO) hybrid nanofluids in 50:50 and 80:20 ratios, offering a notable improvement over conventional Al₂O₃ or GO nanofluids. It delivers a thorough comparison of thermophysical properties such as thermal conductivity and viscosity and heat transfer performance across water, Al₂O₃ nanofluids, and the Al₂O₃/GO hybrids. Nanofluids at 0.1–0.5 % volume concentrations were tested in a horizontal circular pipe under constant heat flux and turbulent flow with an inlet temperature of 60 °C. The maximum <em>Nu</em> enhancements of 64, 56 and 41 % were noted for Al₂O₃/GO (50:50), Al₂O₃/GO (80:20), and Al₂O₃ nanofluids, respectively at 0.5 vol%, compared to water. The maximum pressure drop of Al₂O₃/GO (50:50) nanofluid is 5.64 and 8.3 % greater than that of Al₂O₃/GO (80:20) and Al₂O₃ nanofluid, respectively at 0.5 vol%. The peak thermal performance index of 1.56, 1.48, and 1.33 is observed for Al₂O₃/GO (50:50), Al₂O₃/GO (80:20), and Al₂O₃ nanofluids. The integration of a multi-layer perceptron artificial neural network further enhances accuracy in predicting thermal performance, surpassing the precision of conventional empirical models. The adopted model showed excellent predictive accuracy, with correlation coefficients of 0.98493 in training, 0.9837 in validation, and 0.98698 in testing.</div></div>","PeriodicalId":341,"journal":{"name":"International Journal of Thermal Sciences","volume":"209 ","pages":"Article 109548"},"PeriodicalIF":4.9,"publicationDate":"2024-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142704693","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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 investigation of heat transfer, thermal efficiency, pressure drop, and flow characteristics of Fe3O4-MgO magnetic hybrid nanofluid in transitional flow regimes","authors":"Victor O. Adogbeji ,&nbsp;Mohsen Sharifpur ,&nbsp;Josua P. Meyer","doi":"10.1016/j.ijthermalsci.2024.109515","DOIUrl":"10.1016/j.ijthermalsci.2024.109515","url":null,"abstract":"<div><div>This study investigates the heat transfer characteristics of <span><math><mrow><msub><mtext>Fe</mtext><mn>3</mn></msub><msub><mi>O</mi><mn>4</mn></msub></mrow></math></span>-MgO/DIW Magnetic Hybrid Nanofluids (MHNFs) compared to deionized water (DIW) across turbulent, laminar and transition flow regimes. Results reveal that the transition of MHNFs begins at significantly higher Reynolds numbers than DIW, contradicting previous findings. This disparity may be due to the specific characteristics of MHNFs, such as altered thermal conductivity and viscosity. Heat transfer results demonstrate enhancement within the fully developed transition regime, with improvements observed for MHNF concentrations from 0.3 to 0.00625 vol%. Volume fraction significantly impacts nanofluids' convective heat transfer characteristics, with higher volume fractions corresponding to higher critical Reynolds numbers. Even at 0.00625 % vol, the transition begins at a lower Reynolds number than DIW. The maximum enhancements in heat transfer were 26 % for 0.3 vol%, 25.8 % for 0.2 vol%, 25.7 % for 0.1 vol%, 17.9 % for 0.05 vol%, 25.6 % for 0.025 vol%, 31.6 % for 0.0125 vol%, and 30.2 % for 0.00625 vol% MHNFs. The optimum enhancement was observed with MHNF concentrations of 0.0125 vol% and 0.00625 vol%. Higher volume fractions led to increased pressure drops, indicating a complex interplay between fluid dynamics and nanofluid properties. The study highlights notable enhancements in thermal efficiency across transition and laminar flow regimes.</div></div>","PeriodicalId":341,"journal":{"name":"International Journal of Thermal Sciences","volume":"209 ","pages":"Article 109515"},"PeriodicalIF":4.9,"publicationDate":"2024-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142703977","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Experimental study on flow boiling of fluorocarbon fluid in the pin-ribbed micro-channel with rigid tails","authors":"Shuang Wang,&nbsp;Lei Xie,&nbsp;Mei Lin,&nbsp;Qiuwang Wang","doi":"10.1016/j.ijthermalsci.2024.109541","DOIUrl":"10.1016/j.ijthermalsci.2024.109541","url":null,"abstract":"<div><div>In this work, a novel type of pin-ribbed micro-channel with rigid tails is designed based on the conventional pin-ribbed micro-channel. A comparative experimental study is carried out using fluorocarbon fluid Novec649. The flow boiling heat transfer and pressure drop characteristics are investigated under horizontal/vertical placement at inlet subcooling temperature of 25 °C. The ranges of inlet mass flux and heat flux are 519–1818 kg·m⁻²·s⁻¹ and 50–500 kW·m⁻², respectively. The results show that at a given mass flux, and heat flux of 300–500 kW·m⁻², the vertical pin-ribbed micro-channel with rigid tails has the lowest average wall temperature, the largest average heat transfer coefficient, and the smallest total pressure drop, therefore it has the largest <em>j</em>-factor, more than 60% higher than that of the horizontal/vertical channel without rigid-tails. With the aid of a high-speed camera, the localized bubble movement phenomena in horizontal/vertical micro-channel with rigid tails was photographed at a mass flux of 519 kg·m⁻²·s⁻¹ and a heat flux of 100 kW·m⁻². Three types of bubble detachment modes in the wake region at the boiling stable state are observed: natural shedding, one-sided shear and two-sided shear. The bubble detachment diameter under the one-sided shear is more than 23% smaller than that of two-sided shear, and that of the horizontal channel is more than 44% higher than that in the vertical channel, whereas its bubble detachment frequency is only 50% of that in the vertical channel. Therefore, the vertical placement is more helpful for the rigid tails playing a role in the breakup and detachment of bubbles. The experimental results confirm the advantages of adding rigid tails behind the square-rib to enhance the comprehensive heat transfer performance of flow boiling, which can provide a guidance for the structural design of two-phase miniature heat sinks.</div></div>","PeriodicalId":341,"journal":{"name":"International Journal of Thermal Sciences","volume":"209 ","pages":"Article 109541"},"PeriodicalIF":4.9,"publicationDate":"2024-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142703976","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Optimal arrangements of inlet and outlet in topology liquid-cooled microchannel heat sink based on Multi-Objective optimization","authors":"Dingbiao Wang ,&nbsp;Hongyang Song ,&nbsp;Guanghui Wang ,&nbsp;Yushen Yang ,&nbsp;Shuai Wang ,&nbsp;Sa Xiang","doi":"10.1016/j.ijthermalsci.2024.109552","DOIUrl":"10.1016/j.ijthermalsci.2024.109552","url":null,"abstract":"<div><div>Different forms of inlet and outlet arrangements in microchannel heat sinks have a significant impact on efficient heat dissipation. In this paper, under the framework of the finite element method coupled with the Method of Moving Asymptotes (MMA), three novel topology structures are proposed. Using Solid Isotropic Material with Penalization Parametrization (SIMP), the topology results with different inlet and outlet arrangements are compared and analyzed, with minimizing the average solid temperature, maximizing the heat transfer capacity and minimizing the power consumption per unit of heat transfer, and 207 sets of results are obtained. The optimized results were analyzed by the Nusselt number (<em>Nu</em>), the friction factor (<em>f</em>) and the Performance Evaluation Criterion (<em>PEC</em>). The results present that the heat transfer performance of the optimized three arrangements in the 207 arrangements are enhanced by 133.6 %, 112.56 % and 135.79 %, respectively, and the <em>PEC</em>s improve up to 73.55 %, 65.54 % and 79.78 %, respectively, compared with the horizontal rib inlet and outlet liquid-cooled plate type microchannel heat sink. The results of the present work provide a reference for the optimal design of electronic heat sinks under different working conditions.</div></div>","PeriodicalId":341,"journal":{"name":"International Journal of Thermal Sciences","volume":"209 ","pages":"Article 109552"},"PeriodicalIF":4.9,"publicationDate":"2024-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142652566","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Converging narrow-channel flow of a super-critical fluid","authors":"Abdallah El Malki ,&nbsp;Roger E. Khayat ,&nbsp;Sakir Amiroudine","doi":"10.1016/j.ijthermalsci.2024.109553","DOIUrl":"10.1016/j.ijthermalsci.2024.109553","url":null,"abstract":"<div><div>The solution of a supercritical fluid flowing into a constricted narrow channel is presented in this study. The compressible Navier-Stokes equations in the lubrication limit coupled with the energy equation and the isothermal and non-isothermal van der Waals fluid and perfect gas have been solved. In order to find the semi-analytical solution of these non-linear coupled equations, homogenization technique in the transverse direction has been applied. Because of the high compressibility and high thermal expansion of supercritical fluids, waviness is observed in the flow and thermal fields near the exit of the channel. This effect is attributed to the channel constriction where the slope is maximum, where a strong coupling between the pressure and density gradients exists. Moreover, the density difference between the exit and inlet of the channel drastically increases when one approaches the critical point, corroborating the data from existing literature.</div></div>","PeriodicalId":341,"journal":{"name":"International Journal of Thermal Sciences","volume":"209 ","pages":"Article 109553"},"PeriodicalIF":4.9,"publicationDate":"2024-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142704691","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Influence of floating bubbles in a liquid layer on temperature measurements under acoustic-vacuum exposure","authors":"V.I. Trushlyakov ,&nbsp;A.V. Panichkin ,&nbsp;I.Y. Lesnyak","doi":"10.1016/j.ijthermalsci.2024.109561","DOIUrl":"10.1016/j.ijthermalsci.2024.109561","url":null,"abstract":"<div><div>Investigations were made on how bubbles formed in a liquid influence the readings of a temperature sensor – spherical junction of the thermocouple (SJT) under acoustic-vacuum exposure. According to the proposed hypothesis, the sharp change in liquid temperature can be explained by the fact that under acoustic-vacuum exposure, liquid steam bubbles form on the SJT surface or floating bubbles stick (slip) to it. The temperature of the liquid steam inside the bubbles is higher than that of the surrounding liquid. When the bubbles break away or collapse, the surface temperature of the spherical junction of the thermocouple decreases due to heat exchange with the liquid. A mathematical model was developed for the process of bubbles generation in a liquid under acoustic-vacuum exposure and numerical experiments were carried out. They demonstrated that changes in the temperature of thermocouple readings are influenced mostly by the bubbles forming at the bottom of the experimental container with their subsequent ascent and collapse on the SJT surface. A sharp change in the temperature of the liquid is by 1.5 K–7 K at the bubble collapse on the surface of the thermocouple; by 0.7 K at a bubble sliding over the thermocouple surface; and by 3.5 K–5.5 K at bubble formation on the thermocouple. The results of comparing the liquid temperature values during physical and numerical modeling confirm the hypothesis put forward about the influence of bubbles on the thermocouple readings.</div></div>","PeriodicalId":341,"journal":{"name":"International Journal of Thermal Sciences","volume":"209 ","pages":"Article 109561"},"PeriodicalIF":4.9,"publicationDate":"2024-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142704692","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}