Journal of Heat Transfer-transactions of The Asme最新文献_第5页

Investigation Of Fluid Flow And Heat Transfer Characteristics In Wavy Mini-Channel Heat Sink With Interconnectors 带接头的波浪形小通道散热器的流体流动和传热特性研究

4区工程技术

Journal of Heat Transfer-transactions of The Asme Pub Date : 2023-07-07 DOI: 10.1115/1.4062912

A. Morshed, Abdul Aziz Shuvo, Md. Omarsany Bappy, Amitav Tikadar, T. C. Paul

{"title":"Investigation Of Fluid Flow And Heat Transfer Characteristics In Wavy Mini-Channel Heat Sink With Interconnectors","authors":"A. Morshed, Abdul Aziz Shuvo, Md. Omarsany Bappy, Amitav Tikadar, T. C. Paul","doi":"10.1115/1.4062912","DOIUrl":"https://doi.org/10.1115/1.4062912","url":null,"abstract":"\u0000 In this paper, a novel sinusoidal wavy mini-channel heat sink (MCHS) with inter-connectors (IC w-MCHS) has been introduced, and the effectiveness of the proposed heat sink over conventional mini-channel heat sink (s-MCHS) has been numerically investigated. Different parameters, i.e., wavelengths, wave amplitudes, and phase shifts of the proposed sinusoidal wavy MCHS, were varied to study its effect on thermal and hydraulic performance. This study used three different wavelengths, three different amplitudes, and two different phase shifts, and Reynolds number (Re) varied from 300 to 800. The Nusselt number (Nu) of IC w-MCHS increased as the wave amplitude ratio (α) and Re increased, whereas it increased with the decrement of the wavelength ratio (β). Nu of the IC w-MCHS was also found to depend on phase shift (θp); for θp = π, the chaotic advection and increment of flow reversal were observed in the IC w-MCHS compared to θp = 0, resulting in higher Nu and higher pressure drop penalty. Nu of the IC w-MCHS was found to be 115% higher compared to s-MCHS at Re 550, θp = π,and a = 0.3,whereas it was found 77% higher for θp = 0. The maximum temperature of the IC w-MCHS heat sink was also found to decrease compared to that of the s-MCHS due to enhanced coolant mixing. A maximum26% decrease in the heat sink temperature was observed for the IC w-MCHS at Re 800 compared to the s-MCHS.","PeriodicalId":15937,"journal":{"name":"Journal of Heat Transfer-transactions of The Asme","volume":"19 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80092279","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Investigation of Thermal-Flow Behavior and Droplet Dynamics of Mist Sweeping Impinging Jet Cooling 扫雾冲击射流冷却的热流行为和液滴动力学研究

4区工程技术

Journal of Heat Transfer-transactions of The Asme Pub Date : 2023-06-30 DOI: 10.1115/1.4062877

Ting Wang, R. Abdelmaksoud

{"title":"Investigation of Thermal-Flow Behavior and Droplet Dynamics of Mist Sweeping Impinging Jet Cooling","authors":"Ting Wang, R. Abdelmaksoud","doi":"10.1115/1.4062877","DOIUrl":"https://doi.org/10.1115/1.4062877","url":null,"abstract":"\u0000 This paper presents a 2-D numerical study to investigate the fluid flow behavior and cooling characteristics caused by injecting tiny droplets into the sweeping air jet through a fluidic oscillator. An unsteady Reynolds-averaged Navier-Stokes simulation accompanied with the k-ω SST turbulence model is used in this study. The movement and evaporation of the mist are simulated by using the discrete phase model. The study has been conducted for a target wall with a constant heat flux of 3,000 W/m2, jet-to-wall distance of 4, ReD=2,500, and a mist /air mass ratio of 5% with a droplet size of 5 microns. A comparison between the cooling performance of steady and sweeping jets is presented for two impingement schemes. The approach of using a slip upper wall boundary condition as an alternative of the unconfined impingement scheme is investigated as well. The results show that adding mist provided a temperature reduction of 5-10% on the target wall in all cases when compared to the air cases. The liquid droplet coalescence phenomenon prevails in the sweeping jet case. For the confined impingement, both mist jets provided the similar average temperature reduction. However, the steady mist jet introduced a 58% more target wall shear compared to the sweeping mist jet. For the unconfined impingement, the steady mist jet achieved a better average cooling performance compared to that of the sweeping mist jet. However, the steady mist jet introduced a 72% more target wall shear.","PeriodicalId":15937,"journal":{"name":"Journal of Heat Transfer-transactions of The Asme","volume":"46 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77545411","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Theoretical Analysis For Condensation Heat Transfer Performance Inside Converging-Shaped Microchannel Under Varying-Gravity Conditions 变重力条件下聚敛型微通道内冷凝换热性能的理论分析

4区工程技术

Journal of Heat Transfer-transactions of The Asme Pub Date : 2023-06-29 DOI: 10.1115/1.4062853

Chao Bai, Yan Qiu, Min Wei

{"title":"Theoretical Analysis For Condensation Heat Transfer Performance Inside Converging-Shaped Microchannel Under Varying-Gravity Conditions","authors":"Chao Bai, Yan Qiu, Min Wei","doi":"10.1115/1.4062853","DOIUrl":"https://doi.org/10.1115/1.4062853","url":null,"abstract":"\u0000 The fast increasing heat-dissipation requirements under different working conditions such as varying gravity for aerospace industry is drawing more and more attention. Condensation inside microchannel is proved to be a promising technique to tackle this task. To comprehensively and accurately describe the physical phenomenon, a theoretical method considering both momentum exchange caused by vapor condensation and interface temperature drop is developed in this study. Reliability of our theoretical method is verified with both the Comprehensive Shah Correlation and established data. Condensation heat transfer inside converging-shaped microchannel is investigated and the influences of channel size, refrigerant mass flow rate, gravity variation and converging angle are considered. Converging-shaped microchannel significantly enhances condensation heat transfer, especially for smaller channel with larger refrigerant mass flow rate. Influence of gravity change on condensation performance of vertically-configured microchannel both with converging shape and constant cross-sectional area is small.","PeriodicalId":15937,"journal":{"name":"Journal of Heat Transfer-transactions of The Asme","volume":"54 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82164711","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect Of A Sinusoidal Temperature Profile On Entropy Generation Due To Double-Diffusive Natural Convection In A Square Partly Porous Cavity 正弦温度分布对方形部分多孔腔中双扩散自然对流产生熵的影响

4区工程技术

Journal of Heat Transfer-transactions of The Asme Pub Date : 2023-06-29 DOI: 10.1115/1.4062856

Omara Abdeslam, Bourouis Abderrahim, Rabah Bouchair

{"title":"Effect Of A Sinusoidal Temperature Profile On Entropy Generation Due To Double-Diffusive Natural Convection In A Square Partly Porous Cavity","authors":"Omara Abdeslam, Bourouis Abderrahim, Rabah Bouchair","doi":"10.1115/1.4062856","DOIUrl":"https://doi.org/10.1115/1.4062856","url":null,"abstract":"\u0000 In this manuscript, entropy generation due double-diffusive natural convection and sinusoidal heating on one side inside a composite enclosure is numerically analyzed for various values of some governing parameters. Finite Volume method (FVM) is used to discretize the resulting dimensionless coupled partial differential equations while the SIMPLE algorithm is used to deal with pressure-velocity coupling. The validity of the results obtained by the in-house FORTRAN code is verified by comparison with previous numerical and experimental work.\u0000 It was found that in the case of comparable effects of temperature and concentration buoyancy forces (N=1), the heat transfer irreversibility increases with increasing α and becomes dominant for α=0.8, resulting in a values of average Bejan number, Beavg>0.5, while at high values of N (N=10), the fluid friction irreversibility dominates for all values of ?. Moreover, the results indicate that for the chosen values of Ra and Da, the entropy generation due to fluid friction is dominant when (Sψ)<1 (partly porous cavity), regardless of Rk, a and N values, whereas for pure porous cavity (Δ=1), Sθ(max) becomes dominant.","PeriodicalId":15937,"journal":{"name":"Journal of Heat Transfer-transactions of The Asme","volume":"20 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88494732","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Double Diffusive Convective Flow Study of a Hybrid Nanofluid in an Inverted T-shaped Porous Enclosure Under the Influence of Soret and Dufour Prameters Soret和Dufour参数影响下混合纳米流体在倒t形多孔腔内双扩散对流流动研究

4区工程技术

Journal of Heat Transfer-transactions of The Asme Pub Date : 2023-06-29 DOI: 10.1115/1.4062854

Suman Kumar, B. Kumar, S. V. K. Krishna Murthy

{"title":"Double Diffusive Convective Flow Study of a Hybrid Nanofluid in an Inverted T-shaped Porous Enclosure Under the Influence of Soret and Dufour Prameters","authors":"Suman Kumar, B. Kumar, S. V. K. Krishna Murthy","doi":"10.1115/1.4062854","DOIUrl":"https://doi.org/10.1115/1.4062854","url":null,"abstract":"\u0000 This numerical investigation is dedicated to explore the impact of Soret and Dufour parameters in the double-diffusive convective flow of a hybrid nanofluid in an inverted T-shaped porous enclosure. The thermophysical properties and the numerical values of the hybrid nanofluid are adopted from the experimentally published data. The mathematical model is formulated based on the generalized equation of the Darcy-Brinkmann-Forchheimer model, which is further numerically simulated with the penalty finite element method. As a parametric study, broad values of parameters are considered, including the Rayleigh number, Darcy number, porosity value, buoyancy ratio, Lewis number, Soret, and Dufour parameter. The fluid flow, heat, and mass transfer in the physical domain have been characterized through the results of streamlines, isotherms, and isoconcentration plots, respectively. Additionally, quantitative numerical results for heat and mass transfer rate at the heated(concentrated) wall are expressed through the mean Nusselt and mean Sherwood number at various combinations of flow parameters. The comprehensive study of the present mathematical model reveals that the flow characteristics are directly influenced by the Rayleigh number, Darcy number, porosity value, Lewis numbers, and buoyancy ratio. Moreover, a combined impact of Soret and Dufour parameters is observed in the heat and mass transfer rate.","PeriodicalId":15937,"journal":{"name":"Journal of Heat Transfer-transactions of The Asme","volume":"43 8","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72425210","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Analysis Of Liquid Film Evaporation In Porous Particles: Towards Optimal Wick Parameters For Heat Transfer In Heat Pipes 多孔颗粒中的液膜蒸发分析:探讨热管传热的最佳芯参数

4区工程技术

Journal of Heat Transfer-transactions of The Asme Pub Date : 2023-06-29 DOI: 10.1115/1.4062857

Xiaokang Mei, Xie Yingxi, Shitong Chai, Xiaohua Wu, Longsheng Lu

{"title":"Analysis Of Liquid Film Evaporation In Porous Particles: Towards Optimal Wick Parameters For Heat Transfer In Heat Pipes","authors":"Xiaokang Mei, Xie Yingxi, Shitong Chai, Xiaohua Wu, Longsheng Lu","doi":"10.1115/1.4062857","DOIUrl":"https://doi.org/10.1115/1.4062857","url":null,"abstract":"\u0000 Evaporation of working fluids inside capillary wicks determines the heat transfer capability of heat pipes. However, the relationship between wick parameters and evaporative heat transfer remains unclear. To establish a correlation between wick parameters of sintered porous particles and evaporation characteristics, a boundary condition model was developed, incorporating wick parameters such as particle radius (R), particle distance (d), apparent contact angle (θa), and initial liquid height (H). In the absence of significant size effect, the profile of the liquid-vapor interface was determined using the boundary model by numerically solving the augmented Young-Laplace equation. Ammonia was used as an example to investigate evaporation characteristics, including the thin film profile, pressure distribution, interfacial mass flux (m'), and heat flux (q). The curvature radius of the intrinsic meniscus (Re) was found to serve as a bridging factor between these wick parameters and evaporation characteristics. When Re exceeds 40.3 µm, a limitation in evaporative heat transfer within the thin film region is observed. The relationship between R, d, θa, and H was quantitatively described based on this evaporative heat transfer limit. Furthermore, a non-dimensional analysis of the governing equation for the evaporating liquid film profile was conducted, yielding an influencing factor (?) that governed the thin film profile. The proposed model and its outcomes can offer valuable theoretical insights for the structural design of sintered porous particles, the optimization of surface modification levels, and the determination of the appropriate working fluid charging ratio during the manufacturing process of heat pipes.","PeriodicalId":15937,"journal":{"name":"Journal of Heat Transfer-transactions of The Asme","volume":"174 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82957238","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Development Of A New Heat Transfer Correlation For Flow Of Supercritical Steam In Spiral Tubes Under Deteriorated Heat Transfer Regime 变质传热条件下螺旋管内超临界蒸汽流动传热关系式的建立

4区工程技术

Journal of Heat Transfer-transactions of The Asme Pub Date : 2023-06-29 DOI: 10.1115/1.4062855

D. Kanungo

{"title":"Development Of A New Heat Transfer Correlation For Flow Of Supercritical Steam In Spiral Tubes Under Deteriorated Heat Transfer Regime","authors":"D. Kanungo","doi":"10.1115/1.4062855","DOIUrl":"https://doi.org/10.1115/1.4062855","url":null,"abstract":"\u0000 Heat transfer to supercritical steam flowing inside spiral tube under deteriorated heat transfer regime is investigated in this work using three-dimensional numerical simulations. The numerical solver is first validated with experimental results and subsequently multiple simulation cases are formulated with spiral tube by varying the flow and thermal conditions. The wall temperature and heat transfer co-efficient of spiral tubes are compared with the same of straight tubes. Over the parameters range considered, the heat transfer co-efficient is improved by 88% when straight tube is replaced with spiral tube, for similar flow and thermal conditions. Most significantly, the deteriorated heat transfer regime, which is otherwise witnessed in straight tubes is completely avoided by using spiral tubes, for the similar flow conditions. Tangential velocity, which arise due to centrifugal force is the primary reason of enhanced heat transfer in spiral tubes. Three standard heat transfer co-relations are tested for spiral geometry under deteriorated heat transfer regime and it is found that none of those can predict the heat transfer co-efficient accurately. Using the simulation results along with Buckingham p-theorem, a new co-relation for heat transfer co-efficient is proposed for spiral tubes carrying supercritical steam and operating under deteriorated heat transfer regime. The new co-relation can predict the wall temperature and heat transfer co-efficient accurately. The co-relation has an error band of +/-25%.","PeriodicalId":15937,"journal":{"name":"Journal of Heat Transfer-transactions of The Asme","volume":"26 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85449824","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Segmented Line Heat Source Model for Thermal Radiation Calculation of Jet Fires in Chemical Plants 化工厂房喷火热辐射计算的分段线热源模型

4区工程技术

Journal of Heat Transfer-transactions of The Asme Pub Date : 2023-06-20 DOI: 10.1115/1.4062782

Mingwei Liu, Yuanxin Wang, Lijia Luo, Bao Shiyi, Bo Jia, Xuesheng Li, Wuji Ding

{"title":"Segmented Line Heat Source Model for Thermal Radiation Calculation of Jet Fires in Chemical Plants","authors":"Mingwei Liu, Yuanxin Wang, Lijia Luo, Bao Shiyi, Bo Jia, Xuesheng Li, Wuji Ding","doi":"10.1115/1.4062782","DOIUrl":"https://doi.org/10.1115/1.4062782","url":null,"abstract":"\u0000 The jet fire caused by the leakage of combustible materials is one of the biggest threats to the safety of chemical plants. Thermal radiation of the jet fire brings severe damage to nearby facilities and people's health. To evaluate the damage of jet fires, a precise model for the calculation of heat radiation is indispensable. Classical thermal radiation models of jet fires either have a lower prediction accuracy or a higher computation complexity. To overcome such deficiencies, this paper proposes a novel segmented line heat source (SLHS) model for jet fires. Because the length of the jet fire is often much larger than the width, the jet fire is viewed as a line heat source, with all the heat radiated from the centerline of the jet fire. The jet fire is divided into three segments along the flame length according to the temperature distribution and thermal radiation characteristics of the flame. Based on the SLHS model, three types of thermal radiation models, called cone-cylinder-cone, ellipsoid-cylinder-ellipsoid and ellipsoid-cylinder-cone models, are built for computing the radiant heat flux distribution around the jet fire. The effectiveness and advantages of the proposed models are illustrated with the experimental data and a numerical simulation.","PeriodicalId":15937,"journal":{"name":"Journal of Heat Transfer-transactions of The Asme","volume":"54 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80349492","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Enhancing the Thermal Performance of a Central Tower Tubular Solar Receiver with Direct Steam Generation by Using Internal Fins and Thicknesses Variation 利用内翅片和厚度变化提高中央塔管式直接产汽太阳能接收器的热性能

4区工程技术

Journal of Heat Transfer-transactions of The Asme Pub Date : 2023-06-20 DOI: 10.1115/1.4062785

V. M. Maytorena, J. Hinojosa, Saul F Moreno, Resty L. Duran

{"title":"Enhancing the Thermal Performance of a Central Tower Tubular Solar Receiver with Direct Steam Generation by Using Internal Fins and Thicknesses Variation","authors":"V. M. Maytorena, J. Hinojosa, Saul F Moreno, Resty L. Duran","doi":"10.1115/1.4062785","DOIUrl":"https://doi.org/10.1115/1.4062785","url":null,"abstract":"\u0000 This study provides a comprehensive analysis of the thermal behavior of tubular solar receivers used for direct steam generation, focusing on the effects of different wall thicknesses and longitudinal rectangular fins on the internal surface. The study evaluated six tubes, including two tubes with distinct wall thicknesses (5mm and 3mm) without fins and four tubes with fins but varying configurations. These tubes represent external tubular receivers used in solar central tower plants and operate at 4.5 MPa with a non-uniform solar flux averaging 0.8 MW/m2. Adding longitudinal fins to the tubes significantly reduced the maximum temperature on the irradiated surface and improved heat transfer to the fluid. The study concluded that the 45F5 receiver, which has three fins on the internal section, outperforms the other receivers, presenting a higher vapor generation. Furthermore, the 45F5 geometry enhances heat transfer, allowing the lowest maximum Biot number. These results are crucial for designing tubular solar receivers with direct steam generation systems and improving their efficiency in generating energy from renewable sources.","PeriodicalId":15937,"journal":{"name":"Journal of Heat Transfer-transactions of The Asme","volume":"45 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83545775","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of Flow Resistance of Floating-type Check Valves On Heat Transfer Characteristics of an Oscillating Heat Pipe 浮式止回阀流动阻力对振荡热管传热特性的影响

4区工程技术

Journal of Heat Transfer-transactions of The Asme Pub Date : 2023-06-20 DOI: 10.1115/1.4062783

M. Ando, Atsushi Okamoto, H. Nagai

{"title":"Effect of Flow Resistance of Floating-type Check Valves On Heat Transfer Characteristics of an Oscillating Heat Pipe","authors":"M. Ando, Atsushi Okamoto, H. Nagai","doi":"10.1115/1.4062783","DOIUrl":"https://doi.org/10.1115/1.4062783","url":null,"abstract":"\u0000 An Oscillating Heat Pipe with Check Valves (CVOHP) is an attractive heat transfer device for future spacecraft with considerable heat dissipation and ground applications. This study aims to clarify the effect of the flow resistance of floating-type check valves on the heat transfer characteristics of the CVOHP using a one-dimensional slug flow model, which simulates the five-turn CVOHP used in the on-orbit experiment by the authors. The numerical simulations were conducted for different flow resistances, positions, and numbers of check valves. The results showed that the thermal resistance of the CVOHP increases with the flow resistance of the check valves, while there is no significant effect on the startup characteristics. The thermal resistance increased by more than 100 % in the worst case, and the recommended flow resistance coefficient of the check valve was below 100 in this study for high thermal performance. The thermal resistance increases with an increasing number of high-resistance check valves but is less affected by the position of the valve. Additionally, the higher the heat input, the greater the effect of the flow resistance of the check valves. According to the findings in this study, it is necessary to control the flow resistance of the floating-type check valves at a low level for the high thermal performance of a CVOHP.","PeriodicalId":15937,"journal":{"name":"Journal of Heat Transfer-transactions of The Asme","volume":"12 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85151781","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0