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热科学学报（英文版）
中国科学院工程热物理研究所
热科学学报（英文版）

中国科学院工程热物理研究所

双月

1003-2169

rkxxb@iet.cn

010-82545967

100190

北京市北四环西路11号

热科学学报（英文版）/Journal Journal of Thermal ScienceCSCDEISCI
查看更多>>《热科学杂志》创刊于1992年，是一本国际性的多学科的能源工程和研究期刊，由中国科学院工程热物理研究所，施普林格出版社和科学出版社共同出版，被SCI和EI收录。该杂志旨在为国际最新科技成果和知识交流建立国际平台，并促进学科发展。
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    A Review on Thermal Management of Li-ion Battery:from Small-Scale Battery Module to Large-Scale Electrochemical Energy Storage Power Station

    CHEN ZhifengJIA LiYIN LiaofeiDANG Chao...
    1-23页
    查看更多>>摘要：Li-ion battery is an essential component and energy storage unit for the evolution of electric vehicles and energy storage technology in the future.Therefore,in order to cope with the temperature sensitivity of Li-ion battery and maintain Li-ion battery safe operation,it is of great necessary to adopt an appropriate battery thermal management system(BTMS).In this paper,the current main BTM strategies and research hotspots were discussed from two aspects:small-scale battery module and large-scale electrochemical energy storage power station(EESPS).The practical application situation,advantages and disadvantages,and the future development trend of each heat dissipation method(air,liquid,PCM,heat pipe,hybrid cooling)were described in detail.Among them,the air cooling and liquid cooling were reviewed in-depth based on the engineering application.The PCM,heat pipe and hybrid cooling were reviewed extensively based on the latest explorations.The research provides a comprehensive understanding for the BTMS in all scales.
      原文链接:
    • 国家科技期刊平台
    • NETL
    • NSTL
    • 万方数据

    Numerical Study of Flow and Heat Transfer Characteristics of Shell-and-Tube Molten Salt Electric Heater with Circularly Perforated Baffles

    LIN YongjieZHANG CancanWU YutingZHANG Yi...
    24-33页
    查看更多>>摘要：Numerical simulations of the flow and heat transfer characteristics of four shell-and-tube molten salt electric heaters with different perforation rates was conducted.Shell-and-tube electric heaters have the same geometry and tube arrangement,and all of them use single segmental baffles,but there exist four different baffle openings(φ),i.e.,0％,2.52％,4.06％,and 6.31％.The results indicated that the reasonable baffle opening could significantly reduce the shell-side pressure drop,effectively decreasing the shell-side flow dead zone area.They can eliminate the local high-temperature phenomenon on the surface of electric heating tubes,but the heat transfer coefficient is slightly decreased.All perforated schemes significantly reduce shell-side pressure drop compared to the baseline solution without open holes.In particular,the φ=6.31％scheme exhibits the optimal performance among all the schemes,with a maximum reduction of up to 50.50％in shell-side pressure drop relative to the unopened holes scheme.The heat transfer coefficient is the highest for φ=0％,exhibiting a range of 5.26％to 5.73％,5.14％to 5.99％,and 7.31％to 8.54％higher than φ=2.52％,4.06％,and 6.31％,respectively,within the calculated range.The composite index h/(Δp)1/3 was higher for all open-hole solutions than that for the unopened-hole solution.The best overall performance was for φ=6.31％,which improved the composite index by 15.29％to 17.18％over the unopened-hole solution.
      原文链接:
    • 国家科技期刊平台
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    • NSTL
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    Turbulent Agglomeration of Microparticles in a Cylinder Wake Flow Using LES-DEM:Focusing on the Effect of the Reynolds Number

    WANG ShuangMU LinLI XueXIE Jun...
    34-49页
    查看更多>>摘要：Turbulent agglomeration is viewed as a promising technology for enhancing fine particle removal efficiency.To better understand particle transport,agglomeration behaviors,and fluid-particle interactions,we numerically explored these phenomena under cylindrical vortex wake influence using a coupled large eddy simulation and discrete element method(LES-DEM)approach.The validity of the LES approach was verified by comparison with available direct numerical simulation(DNS)results.We adopted the Johnson-Kendall-Roberts(JKR)contact model for particle-particle interactions.The particle dispersion and agglomeration characteristics of particles with different diameters(dp=2-20 μm)in the laminar and transition of shear layer(TrSL)flow regimes were analyzed.Fine particles were concentrated at the vortex centers,while larger particles accumulated around the vortices.The agglomeration efficiency exhibited an M-shaped profile spanwise(y-direction).With increasing Reynolds number,the agglomeration efficiency and turbulence intensity improve.The particle agglomeration efficiency peaks at a certain Reynolds number.However,at higher Reynolds numbers,reducing the residence time of particles in the flow field decreases the agglomeration efficiency.
      原文链接:
    • 国家科技期刊平台
    • NETL
    • NSTL
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    Comparative Evaluation and Performance Analysis of Heat Exchangers Featured with Peened Surface

    DINESHBABU ChinnaduraiSHIVA SANKARAN NallasamyVENKATESH RAJA KrishnanVENKATESH Rathinavelu...
    50-61页
    查看更多>>摘要：Heat exchangers have the potential for various engineering applications,and their performance is enriched by surface modification.The proposed system enriches the heat exchanger's performance by adapting a peened stainless steel(SS)surface blasted with copper,grinding,sand,and iron.The influences peened SS surface modified with a copper blast,grinding,sandblast,and iron blast on the surface morphology of shell and tube heat exchanger surface(STHE)is analyzed via tungsten heated cathode electron gun featured scanning electron microscope and observed coarse grain surface.The SS surface featured STHE performance is experimentally evaluated by different flow rates(30,60,90,and 120 L/min)underwater fluid medium functioned by the temperature ranges of 25-75℃ and its results are compared with computational fluid dynamic(CFD)/heat transfer research(HTRI)analyzed results.The 60 L/min flow rate was spotted as an optimum value for both shell and tube side reasons.The STHE is operated with a 60 L/min flow rate under the different peened surfaces and evaluated its Stanton number,Nusselt number,logarithmic mean temperature difference(LMTD),overall heat transfer coefficient,number of transfer units(NTU),effectiveness,and exergy efficiency.The iron blasted SS peened surface was observed to have better SHTE performance like Stanton number(0.0012),Nusselt number(2180),reduced LMTD of 31℃,improved overall heat transfer co-efficient of 2400 W/(m2.K),better NTU of 0.5532,good effectiveness value of 0.451 62,and hiked exergy efficiency of 10％respectively.
      原文链接:
    • 国家科技期刊平台
    • NETL
    • NSTL
    • 万方数据

    Numerical Simulation of Radiation Transport to Improve Microalgae Cultivation in an Air-Lift Photobioreactor

    ZHANG XianbinLI MingjiaHUNG TzuchenZHANG Zixun...
    62-76页
    查看更多>>摘要：A comprehensive numerical model is developed to simulate the growth of microalgae under light/dark cycling conditions.The purpose of this study is to predict the growth rate of Chlorella vulgaris cultivated in photobioreactors(PBRs)in order to improve the light conditions for microalgae and enhance the photosynthetic efficiency.Computational fluid dynamics(CFD)is used to simulate its internal hydrodynamic behaviors.The Lagrangian method is employed to track the movement of microalgae cells.The radiative transfer equation(RTE)is used to obtain light intensity distribution.The combination of light radiation field and microalgae cell motions is used to construct the light history and they are integrated into the model of the photosynthetic units(PSU)to calculate the microalgae growth rate.The numerical results demonstrate that enhanced light/dark cycling frequency with ordered mixing can promote efficient microalgae cultivation.The effect of the vortex flow field generated by the baffles in an air-lift PBR is analyzed for increasing microalgae growth rate.When using the 1:1 baffle spacing,the biomass production of microalgae is increased by 41.8％compared to the original PBR.
      原文链接:
    • 国家科技期刊平台
    • NETL
    • NSTL
    • 万方数据

    Automatic and Rapid Throughflow-Based Optimal Design Method for Multi-Stage Axial-Flow Compressors

    LEI FanZHANG XiawenJU YapingZHANG Chuhua...
    77-91页
    查看更多>>摘要：Throughflow design has the advantages of less time consumption and large optimization space,and thus is the comer stone of advanced design system of multi-stage axial-flow compressors.The majority of relevant studies were limited to the throughflow inverse designs,and quite few works have been till now devoted to the throughflow optimal designs.In this work,an automatic and rapid throughflow-based optimal design method is proposed for axial-flow compressors in which a throughflow inverse design solver is embedded in optimal genetic algorithm to improve the design efficiency of axial-flow compressor.Two types of design parameters in the throughflow inverse design of axial-flow compressors,i.e.,swirl and shroud curve,are simultaneously used to optimize both the blade shape and flow path.The proposed method is validated by the redesign optimization of the benchmark axial-flow compressor NASA Stage 35,and the CFD predictions show that the throughflow-based optimization leads to 1.18％efficiency benefit at design condition.The proposed method is then utilized to the two-dimensional throughflow optimal design of a large-scale 6.5-stage axial-flow industrial compressor.The optimal design results are confirmed by CFD predictions,indicating that the proposed method can effectively improve the design adiabatic efficiency of the compressors by 1.09％within a few minutes on desk-top computer.Two throughflow design implications are also obtained for advanced axial-flow industrial compressors.This work could enhance the capability of throughflow design method and has engineering application value to explore the throughflow optimization space of multi-stage axial-flow compressors.
      原文链接:
    • 国家科技期刊平台
    • NETL
    • NSTL
    • 万方数据

    Aerodynamic Optimization and Flow Mechanism for a Compressor Cascade at Low Reynolds Number

    LI LinZHANG JiansheCHEN CaiyanTAN Wei...
    92-109页
    查看更多>>摘要：Low-Reynolds-number effect is an important factor affecting the performance of compressors and other main components of high-altitude long-endurance unmanned aerial vehicles.To improve the flow condition and reduce flow loss under the condition of high altitude and low Reynolds number(Re),this paper proposes an optimization process based on a surrogate model,which combines the class-shape transformation method(CST),the Latin hypercube sampling(LHS)method,the light gradient-boosting machine algorithm(LightGBM),and a genetic algorithm(GA)to optimize a high-subsonic compressor profile.The surrogate model is verified to be accurate and can be used in the optimization process.The accuracy of the GA is higher than the other algorithms under common test functions.The optimization results are verified by numerical simulation,and the flow differences before and after optimization are compared,especially the flow within the boundary layer.By changing the blade shape,the optimization process adjusts the loading distribution to delay the transition of the optimized blade on the suction surface,which changes the turbulent reattachment in the laminar separation bubble(LSB)into laminar reattachment.Therefore,the mixing loss induced by the turbulent reattachment of the LSB and the wake loss of turbulent separation at the trailing edge are significantly reduced,and the performance of the compressor profile is finally improved.In addition,turbulent separation of the optimized profile is delayed reducing the range of the wake region on the suction surface.By this optimization process,the reduction of total pressure loss coefficient at Re of 2.5×105,3.5×105,and 4.5×105 are 16.32％,20.76％,and 22.16％,respectively.
      原文链接:
    • 国家科技期刊平台
    • NETL
    • NSTL
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    Design and Application of Turbine Cascade Partitioned Endwall Profiling

    ZENG FeiJIANG RuiqiXUE XingxuDU Wei...
    110-128页
    查看更多>>摘要：The influence of partitioned profiling design based on a large-pitch highly loaded cascade is studied by numerical simulation.The partitioned profile is mainly composed of a pressure-side convex structure near the leading edge and a suction-side convex structure at the midstream and downstream sides of the passage.The influence of the change in the vertex axial position and peak value of the B-line on the secondary flow control is analyzed.In this paper,air(ideal gas)is selected as the flow media.The average static pressure at the outlet and the average total temperature at the inlet are kept constant.SST γ-θ is used as the turbulence model.The results show that the pressure-side convex structure suppresses the spanwise and pitchwise migration of the inlet flow by adjusting the static pressure distribution of the flow field,so the development of the pressure-side leg of the horseshoe vortex is effectively limited.The suction-side convex structure adjusts the static pressure distribution of the flow field and increases the included angle between the cross-flow and suction surface,so the accumulation of low-momentum fluid,the development of a comer vortex and the flow separation at the trailing edge of the suction-side surface are all suppressed near the endwall-suction comer.Consequently,the energy loss coefficient of the large-pitch highly loaded cascade is decreased from 0.0564 to 0.0485,representing a 25％reduction in secondary flow losses.
      原文链接:
    • 国家科技期刊平台
    • NETL
    • NSTL
    • 万方数据

    Control of Corner Separation for a Linear Compressor Cascade via Bionic Slanting Riblets at the Endwall

    ZHANG PengLI YonghongCHENG Rixin
    129-144页
    查看更多>>摘要：A new passive control approach,utilizing bionic slanting riblets,is employed to mitigate the flow close to the blade endwall in a linear cascade,and its effectiveness and mechanism in controlling comer separation are investigated through numerical simulations.The slanting riblets are positioned at the endwall upstream of the cascade channel,and the influence of riblet height,yaw angle and relative position on the control of comer separation is investigated.The findings indicate that the application of slanting riblets can efficiently counteract comer separation across the stable operational range.Specifically,the introduction of riblets with a height of merely 0.1 times the boundary layer thickness results in a significant reduction in total pressure loss by up to 14.53％,while simultaneously enhancing the static pressure coefficient by 21.74％.Flow analysis reveals that minute vortices produced within the riblet channels tend to coalesce,forming a potent large-scale vortex near the boundary layer's base downstream.This phenomenon results in reduced additional losses compared to conventional vortex generators.Additionally,the induced vortex promotes enhanced mixing between the mainstream flow and boundary layer,inhibiting the lateral displacement of low-energy fluids within the endwall boundary layer.Consequently,this delays the onset of separation vortex formation and eliminates vortex rings in the comer region,ultimately enhancing the aerodynamic efficiency of the cascade.
      原文链接:
    • 国家科技期刊平台
    • NETL
    • NSTL
    • 万方数据

    A Wind Tunnel Experimental Study on the Wake Characteristics of a Horizontal Axis Wind Turbine

    GUO XingduoLI YinranLI RennianMA Yulong...
    145-158页
    查看更多>>摘要：The characteristics of wind turbine wakes are influenced by multiple factors,including the atmospheric boundary layer(ABL)wind and wind turbine operating conditions(e.g.,tip speed ratio and yaw angle).In this study,two types of ABL winds with different velocity gradients and turbulence intensities are generated in a wind tunnel through configurations of spires,baffles,and various numbers of roughness elements.A wind turbine with a rotor diameter of 0.8 m and a hub height of 0.6 m is tested under varying tip speed ratios,yaw angles,and ABL wind conditions.The results indicate that the streamwise velocity deficit in the near-wake region becomes more pronounced with an increase in the tip speed ratio,while the far-wake velocity deficit remains largely unaffected by changes in the tip speed ratio.As the yaw angle increases,the wake deflection becomes more prominent and the wake narrows;the offset of the wake center at various downstream positions grows linearly,reaching a maximum value of approximately half the rotor diameter.Furthermore,the turbulence level and influence range in the wake region are reduced when the turbine is yawed.Under ABL wind conditions,high turbulence intensity in the incoming flow accelerates wake recovery,and the Reynolds stress at different lateral positions tends to become consistent with increasing longitudinal distance.Additionally,turbulence has a significant impact on the meandering characteristics of the wind turbine wake,with greater fluctuations in the wake center observed under higher turbulence intensities.Overall,this study provides insights that could inform the optimal operation of wind farms.
      原文链接:
    • 国家科技期刊平台
    • NETL
    • NSTL
    • 万方数据