Case Studies in Thermal Engineering最新文献

{"title":"Constructal design for a clover-shaped high conductivity channel in a square heat generating body","authors":"Lingen Chen ,&nbsp;Tian Xie ,&nbsp;Fengyin Zhang ,&nbsp;Huijun Feng ,&nbsp;Yanlin Ge","doi":"10.1016/j.csite.2025.106190","DOIUrl":"10.1016/j.csite.2025.106190","url":null,"abstract":"<div><div>Constructal design of a square heat generating body with a clover-shaped high thermal conductivity channel is carried out. The research focuses on minimizing the maximum temperature difference and the entropy generation rate by releasing degrees of freedom step by step. Through exploring the effects of thermal conductivity ratio and the proportion of high conductivity material area, which allows for a more nuanced understanding of how different design parameters affect the thermal performance and optimal construct. Results demonstrate that increasing these parameters significantly reduces temperature difference and thermodynamic irreversibility. For instance, when the thermal conductivity ratio rises from 100 to 600, the minimum dimensionless maximum temperature difference decreases by 28.1 %, and the minimum dimensionless entropy generation rate drops by 40.7 %. The study highlights the superiority of three degree-of-freedom optimization, which reduces the maximum temperature difference by 11.2 % and the entropy generation rate by 12.84 % compared to single degree-of-freedom optimization. Additionally, slender clover-shaped blades further improve heat transfer efficiency. The clover-shaped channel outperforms traditional I-shaped design and fan-shaped design, offering better thermal performance under the same conditions. The constructal design of clover-shaped high conductivity channel provides valuable insights for optimizing heat dissipation in electronic devices and other applications requiring efficient thermal management.</div></div>","PeriodicalId":9658,"journal":{"name":"Case Studies in Thermal Engineering","volume":"71 ","pages":"Article 106190"},"PeriodicalIF":6.4,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143873114","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 semi-theoretical model for hydraulic conductivity prediction considering temperature effect","authors":"Jiahua Li ,&nbsp;Shiwan Chen ,&nbsp;Ruyun Wu ,&nbsp;Yuhang Zhu ,&nbsp;Senyou An","doi":"10.1016/j.csite.2025.106188","DOIUrl":"10.1016/j.csite.2025.106188","url":null,"abstract":"<div><div>It is of great significance to accurately characterize fluid migration within fractures under thermal-mechanical coupling condition for deep ground engineering, especially for the nuclear waste disposal engineering. Previous efforts characterizing hydraulic properties of fractures have focused on room temperature, and it is difficult to deep understand the deformation-seepage coupling process of rock fractures under temperature. Thus, models derived from in this condition have been limited in their predictive ability for fracture seepage. This paper addresses the key challenge through well-designed experiments, combined with the improved BB model and the cubic law. The fracture deformation was separated from single-fractured granite during normal cyclic loading. The deformation and hydraulic properties of granite fractures under thermal-mechanical coupling were analyzed in detail. A linear relationship between hydraulic aperture and mechanical aperture considering temperature effect is established. A stress-deformation-seepage model considering temperature and cyclic loading history effect is proposed, and the accuracy of the model is verified. This study can provide reference for nuclear waste geological disposal project.</div></div>","PeriodicalId":9658,"journal":{"name":"Case Studies in Thermal Engineering","volume":"71 ","pages":"Article 106188"},"PeriodicalIF":6.4,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143879084","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":"Computational study of fin-equipped circular object on the cooling and power generation in an elastic-walled channel equipped with piezoelectric device","authors":"Fatih Selimefendigil ,&nbsp;Hussain Altammar ,&nbsp;Hakan F. Oztop","doi":"10.1016/j.csite.2025.106134","DOIUrl":"10.1016/j.csite.2025.106134","url":null,"abstract":"<div><div>Novel thermal management methods with energy storage and energy production mechanisms are preferred due to the need for effective cooling and energy efficient products. In this study, a novel system with fin-equipped circular object (FE-CO) is proposed with piezzo energy harvester (PEH) during turbulent forced convection hybrid nanofluid cooling of a hot block located in an elastic walled channel. The PEH is mounted below the elastic wall. Utilizing FEM and ALE, the numerical analysis takes into account a range of fin inclination values (<span><math><mi>γ</mi></math></span> between 45 and 135), FE-CO horizontal location (xc between -0.35L and -0.23L), FE-CO vertical location (yc between 0.4H and 0.7H), fin size (Lf between 0 and 0.4H), and nanoparticle loading (<span><math><mi>ϕ</mi></math></span> between 0 and 0.03). It is shown that the fin length and position of the FE-CO are useful control parameters for PEH power generation and thermal management. Utilizing nanofluid results in a considerable boost in power generation as compared to using simply pure fluid. For nanofluid, the produced power increased by 14% between <span><math><mrow><mi>γ</mi><mo>=</mo><mn>45</mn></mrow></math></span> and <span><math><mrow><mi>γ</mi><mo>=</mo><mn>75</mn></mrow></math></span>. From <span><math><mrow><mi>γ</mi><mo>=</mo><mn>75</mn></mrow></math></span> to <span><math><mrow><mi>γ</mi><mo>=</mo><mn>135</mn></mrow></math></span>, the reduction amount is 53%. At <span><math><mrow><mi>γ</mi><mo>=</mo><mn>90</mn></mrow></math></span>, the biggest differences between pure fluid and nanofluid are observed for walls W1 (left vertical) and W3 (right vertical). For top wall W2, cooling performance improvement with nanofluid rises to 40%. By modifying the FE-CO’s horizontal and vertical positioning with the use of nanofluid, the generated power enhancement factors become 13.8 and 3.8. While the produced power increases as the FE-CO’s fin length increases, using nanofluid at the maximum fin length enhances cooling performance for hot wall components W1, W2, and W2 by around 75%, 13.5%, and 21%. The optimum values of (yc/H, <span><math><mi>γ</mi></math></span>) when applying optimization are (0.444,97.7) for maximum cooling and (0.7,72) for greatest power generation. As compared to no object case, optimum case provides power enhancement factor of 17.8 while Nu increment becomes 36.5%</div></div>","PeriodicalId":9658,"journal":{"name":"Case Studies in Thermal Engineering","volume":"71 ","pages":"Article 106134"},"PeriodicalIF":6.4,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143868865","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":"Design and comparison study of a novel linear Fresnel reflector solar ORC-driven hydrogen production system using different working fluids","authors":"Gang Wang ,&nbsp;Shaoxuan Zhang ,&nbsp;Tianlin Zou","doi":"10.1016/j.csite.2025.106187","DOIUrl":"10.1016/j.csite.2025.106187","url":null,"abstract":"<div><div>This paper presents a novel linear Fresnel reflector solar organic Rankine cycle-driven hydrogen production system consisting of thermal energy storage system, organic Rankine cycle and proton exchange membrane hydrogen production device. By using Ebsilon software, operation, exergy and economic performances of the proposed hydrogen production system using seven different organic working fluids are evaluated and compared, including cyclohexane, propane, toluene, hexane, R123, R11 and R143A. The analysis results show that when hexane is used as the organic working fluid, the proposed system has the largest net output power, highest cycle efficiency and largest hydrogen production rate (2325.3 kW, 20.8 % and 36.0 kg·h^-1), showing the best operation performance. In addition, the proposed system using hexane has the smallest overall exergy loss (19.58 MW) and highest overall exergy efficiency (18.4 %), while the system using R11 has the largest overall exergy loss (21.78 MW) and lowest overall exergy efficiency (9.24 %). Furthermore, the proposed system using hexane has the lowest levelized cost of hydrogen, smallest payback period and largest net present value (4.97 $·kg^-1, 4.7 years and 47.8 million USD), showing the best economic performance. In general, compared with other six organic working fluids, the proposed hydrogen production system using hexane has the best operation, exergy and economic performances.</div></div>","PeriodicalId":9658,"journal":{"name":"Case Studies in Thermal Engineering","volume":"71 ","pages":"Article 106187"},"PeriodicalIF":6.4,"publicationDate":"2025-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143864059","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":"Maximizing the energy efficiency of induced draft and hybrid draft cooling towers","authors":"Chamanthi D. Jayaweera ,&nbsp;Ivaylo P. Hitsov ,&nbsp;Joachim Wauman ,&nbsp;Nicolaas Van Belzen ,&nbsp;Niels Groot ,&nbsp;Ralf Bosch ,&nbsp;Arne Verliefde ,&nbsp;Ingmar Nopens","doi":"10.1016/j.csite.2025.106183","DOIUrl":"10.1016/j.csite.2025.106183","url":null,"abstract":"<div><div>Cooling towers consume energy in the order of several hundred kilowatts for operating fans and pumps for driving air and water through the tower. Therefore, it is financially advantageous and environmentally friendly to optimize the fan operation of a cooling tower. The current study optimizes the fan operation using data obtained from full-scale induced-draft and hybrid-draft cooling towers. The optimization was performed on a previously developed model, with a prediction accuracy exceeding 0.9 R², while keeping the outlet temperature of the cooling tower within the specifications of the plant. The fan operation was optimized such that the energy efficiency (ratio of heat released from the water to the energy consumed by the cooling tower) is maximized. This study demonstrates how over 50 % of energy savings can be realized by optimizing the fan operation of induced draft cooling towers. The energy efficiency of hybrid draft cooling towers can be maximized while improving the cooling capacity of cooling water. In this study, differences in the balance between energy efficiency and cooling capacity were observed in the hybrid-draft and induced-draft cooling towers.</div></div>","PeriodicalId":9658,"journal":{"name":"Case Studies in Thermal Engineering","volume":"71 ","pages":"Article 106183"},"PeriodicalIF":6.4,"publicationDate":"2025-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143864060","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":"Inherent thermodynamic performance assessment of a variable refrigerant flow system under transient cooling load: A case study of an eco-villa","authors":"Muhammad Reshaeel,&nbsp;Mohamed I. Hassan Ali","doi":"10.1016/j.csite.2025.106171","DOIUrl":"10.1016/j.csite.2025.106171","url":null,"abstract":"<div><div>Variable refrigerant flow systems are recognized for their energy efficiency, yet their performance under fluctuating cooling loads and interdependencies among intrinsic performance variables remains insufficiently explored. This study investigates the thermodynamic and environmental performance of a variable refrigerant flow system for an eco-villa in Masdar City, Abu Dhabi, under dynamic operating conditions. A mathematical model exhibiting a coefficient of determination of 0.89, a mean absolute error of 0.04, and a mean square error of 0.01, has been developed in MATLAB to evaluate system behavior. Analysis of the system's intrinsic performance variables reveals its ability to dynamically adjust compressor speed in response to fluctuating cooling loads, enhancing isentropic efficiency. This dynamic adaptability results in a reduction in power consumption by 11.1 % and an enhancement in the coefficient of performance by 12.5 % during minimum load conditions compared to constant-speed compressors. Energy and exergy evaluations indicate that cooling load profiles dominate system performance. Compressor power ranges from 6.06 kW at peak load conditions to 2.64 kW at minimum load conditions, with the corresponding increase in the coefficient of performance (3.73–4.40) and exergy efficiency (36.91 %–43.58 %), and a decrease in exergy destruction (2.95–1.05 kW). Statistical analysis using Pearson correlation highlights strong interdependencies among variables, including ambient temperature's positive correlation with compressor speed (0.89) and condensation temperature's negative correlation with isentropic efficiency (−0.22). Conversely, evaporation temperature shows a positive correlation with isentropic efficiency (0.29), enhancing system performance and reducing exergy destruction. Finally, the environmental evaluation analysis a 15.38 % reduction in annual energy consumption and a 1.51-ton reduction in carbon dioxide emissions per eco-villa annually, scaling to 1509.75 tons for 1000 villas, underscoring the system's potential for energy efficiency and environmental sustainability.</div></div>","PeriodicalId":9658,"journal":{"name":"Case Studies in Thermal Engineering","volume":"71 ","pages":"Article 106171"},"PeriodicalIF":6.4,"publicationDate":"2025-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143874401","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":"Prediction and sensitivity analysis of pressure pulsation in a LDI combustor based on a fully connected neural network","authors":"Qian Yao ,&nbsp;Shize Tian ,&nbsp;Wei Pan ,&nbsp;Wu Jin ,&nbsp;Jianzhong Li ,&nbsp;Li Yuan","doi":"10.1016/j.csite.2025.106151","DOIUrl":"10.1016/j.csite.2025.106151","url":null,"abstract":"<div><div>This paper presents a pressure pulsation prediction model and conducts sensitivity analysis on pressure pulsation. Experiments are performed on a multi-swirl lean direct injection (LDI) combustor under varied operating conditions to establish a comprehensive dataset. The raw data undergo fast Fourier transform (FFT) and phase space reconstruction to determine combustion mode (stable/unstable), dominant frequency, and amplitude. A fully connected neural network (FCNN) is utilized to predict these pressure parameters, and it demonstrates superior performance compared to support vector regression (SVR) and random forest (RF) models. For test data, the FCNN achieves an average relative error (MRE) of 2.54 % for dominant frequency and a mean absolute error (MAE) of 0.64 % for pressure amplitude, suggesting high accuracy and generalization ability. Furthermore, the FCNN model is assessed for its alignment with physical laws by varying input features. Results indicate that the FCNN model exhibits the best physical consistency among the models. Employing the FCNN model as the surrogate, Sobol’ sensitivity analysis identifies the fuel-air ratio as the most influential parameter, with significant impacts also from inlet flow rate and inlet temperature, while nozzle position exerts a minor influence. Additionally, individual parameter effects on combustion instability are minimal, and instability is primarily driven by parameter interactions.</div></div>","PeriodicalId":9658,"journal":{"name":"Case Studies in Thermal Engineering","volume":"71 ","pages":"Article 106151"},"PeriodicalIF":6.4,"publicationDate":"2025-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143879457","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":"Fractional photo-thermoelastic waves of hydrodynamic semiconductors with Hall currents and variable thermal conductivity","authors":"Khaled Lotfy ,&nbsp;Ibrahim S. Elshazly ,&nbsp;Imed Bachar ,&nbsp;Saurav Sharma ,&nbsp;Alaa A. El-Bary ,&nbsp;Nesreen A. Yaseen","doi":"10.1016/j.csite.2025.106180","DOIUrl":"10.1016/j.csite.2025.106180","url":null,"abstract":"<div><div>This study presents a novel investigation of fractional photo-thermoelastic wave propagation in hydrodynamic semiconductor media, incorporating the combined influences of Hall currents and spatially variable thermal conductivity under laser-pulsed excitation. The model builds upon the generalized photo-thermoelasticity framework, extending it with fractional-order heat conduction to account for memory effects and non-Fourier behavior at the nanoscale. By introducing a temperature-dependent thermal conductivity function, the heat transfer equation reflects realistic diffusion patterns found in poro-semiconductor materials under dynamic thermal loading. The Hall current effect introduces additional electromagnetic-mechanical coupling, modifying carrier transport and wave dynamics. A system of coupled field equations is formulated, incorporating fractional heat conduction, charge carrier motion, and excess pore pressure in a poro-hydrodynamic semiconductor environment. The normal mode analysis technique is employed to derive analytical expressions for the physical variables, and the influence of thermal conductivity variation is examined in detail. Results illustrate the significant impact of non-uniform thermal conduction and Hall currents on the physical fields. The findings contribute to the optimization of semiconductor device design, with implications for advanced photothermal technologies, optoelectronic systems, and energy harvesting applications.</div></div>","PeriodicalId":9658,"journal":{"name":"Case Studies in Thermal Engineering","volume":"71 ","pages":"Article 106180"},"PeriodicalIF":6.4,"publicationDate":"2025-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143864052","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":"Thermal performance and applications of Bauhinia Vahlii fiber-reinforced epoxy composites with porcelain Filler: Development and characterization","authors":"Thandavamoorthy Raja ,&nbsp;Yuvarajan Devarajan ,&nbsp;Jayant Ku Nath ,&nbsp;Raghavendra Rao P S ,&nbsp;Bhumika ,&nbsp;Snehal Trivedi ,&nbsp;Krishna Kumar Shukla","doi":"10.1016/j.csite.2025.106182","DOIUrl":"10.1016/j.csite.2025.106182","url":null,"abstract":"<div><div>This work presents an alternate material for sustainable building, primarily aimed at tile replacement, through the development of a unique Bauhinia Vahlii fiber (BVF)-reinforced epoxy composite infused with porcelain filler. The formulation with 4 % filler (C4) proved to be the most beneficial, demonstrating enhanced mechanical, thermal, and antibacterial qualities, hence serving as a feasible alternative to traditional tile materials. C4 exhibited remarkable mechanical properties, featuring a tensile strength of 42 MPa, compressive strength of 46 MPa, flexural strength of 43 MPa, and an impact strength of 15.92 kJ/m², hence providing durability for high-stress applications. The Shore D hardness of 53 further validates its appropriateness for rigorous building settings. Thermal investigation demonstrated C4's capacity to endure high temperatures, exhibiting a heat deflection temperature of 98 °C and a thermal conductivity of 1.52 W/mK, underscoring its enhanced thermal stability and suitability for energy-efficient applications. C4, possessing a minimal water absorption rate of 2.4 %, is suitable for moisture-resistant applications in damp environments within structures. Fatigue tests validated its durability, sustaining a fatigue strength of 70 MPa after 10,000 cycles. C4 had notable antibacterial action, producing a 17 mm inhibition zone against Streptococcus pyogenes, comparable to streptomycin's efficacy. Biofilm studies shown significant bacterial suppression, rendering it extremely appropriate for sanitary environments such as kitchens and toilets. The hydrophobic characteristics of C4, evidenced by a contact angle of 89.80°, augment its resistance to moisture and contaminants, so bolstering its viability as a sustainable and high-performance alternative to traditional tiles in contemporary construction.</div></div>","PeriodicalId":9658,"journal":{"name":"Case Studies in Thermal Engineering","volume":"71 ","pages":"Article 106182"},"PeriodicalIF":6.4,"publicationDate":"2025-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143873111","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 concentrating solar plant configuration with multiple solar fields and thermal energy storage to reduce energy production costs","authors":"Irfan Shaikh,&nbsp;Anish Modi","doi":"10.1016/j.csite.2025.106185","DOIUrl":"10.1016/j.csite.2025.106185","url":null,"abstract":"<div><div>We propose and evaluate the use of a two-tank direct thermal energy storage system with a multi-field concentrating solar power plant. The plant includes parabolic trough collector and linear Fresnel reflector solar fields to generate electricity using a steam Rankine power cycle. Prior literature has assessed the performance of a multi-field configuration, but without thermal energy storage. Integrating thermal energy storage within the plant presents the potential to increase the plant's capacity factor while reducing the levelized cost of electricity (LCOE). A techno-economic analysis is performed considering the design and the off-design characteristics of the proposed configuration. A parametric analysis is also performed to minimize the levelized cost of electricity for the location of Jodhpur, India. The study reveals that there exists a minimum LCOE corresponding to each combination of the parabolic trough collector aperture area and hours of storage. Among all the combinations, the minimum LCOE is 0.283 $ kWh^-1, corresponding to 34372 m² of parabolic trough aperture area and 12 h of storage, which is 20 % less than that for a multi-field concentrating solar power plant without storage. The plant capacity factor is also increased to 70 %, thereby resulting in better dispatchability.</div></div>","PeriodicalId":9658,"journal":{"name":"Case Studies in Thermal Engineering","volume":"71 ","pages":"Article 106185"},"PeriodicalIF":6.4,"publicationDate":"2025-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143868863","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}