Effect of surface condition on high heat flux boiling phenomena in various liquids

表面条件对各种液体高热通量沸腾现象的影响

• 批准号: 15560728
• 负责人: FUKUDA Katsuya
• 金额: $ 2.37万
• 依托单位: Kobe University (2004)神戸商船大学 (2003)
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2003
• 资助国家: 日本
• 起止时间: 2003 至 2004
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-15560728/
• 关键词: surface condition; high wettability; rapid depressurization; heterogeneous spontaneous nucleation; critical heat flux; pool boiling; flow boiling; 流体力学的不安定性

1.Research on high heat flux boiling on horizontal test heater with various surface conditions in a pool of waterThe subcooled pool boiling critical heat fluxes on the horizontal cylinders with mirror finished and rough surfaces in a pool of water at the pressures up to about 2 MPa for the subcoolings up to 60 K were measured. The results compared with corresponding data for the cylinder with commercial surface already obtained for the same experimental conditions. The CHF values for rough surface were good agreement with those obtained by the correlation corresponding to commercial surface based on hydrodynamic instability (HI) and heterogeneous spontaneous nucleation (HSN) curves.2.Research on high heat flux boiling on horizontal test heater with various surface conditions in various wetting liquidsSteady-state and transient CHFs were measured by using a horizontal cylinder in a pool of water and highly wetting liquid such as Ethanol with various periods for wide ranges of subcooling … More and pressure. The steady-state CHFs were expressed by the correlation base on heterogeneous spontaneous nucleation at various pressures. The transient CHFs depending on the periods were divided into two principal groups. The CHFs increase with an increase in subcooling at pressures and they are independent of pressures at high subcoolings.3.Research on transient boiling due to rapid depressurization on horizontal heater in a pool of wetting liquidThe characteristics of the transient boiling processes for the transitions from the initial heat fluxes in natural convection and nucleate boiling regimes to film boiling regime caused by the exponentially decreasing system pressures using measured heat transfer processes for ethanol including transient CHFs caused by the rapid depressurizations decreasing exponentially with the periods were clarified.4.Research on subcooled flow boiling CHF with high heat flux enhancement.In the relation of deep research, the subcooled water flow boiling CHFs versus outlet subcoolings for a flow velocity with outlet pressures as a parameter in the horizontal and vertical tubes with enhancement having flowing subcooled water were clarified using the existing databases expanding quite recently derived the correlations representing the subcooled water flow boiling CHF versus outlet subcooling in tubes with various tube inside diameter and length-to-diameter ratios for a flow velocity with outlet pressure as a parameter. Less

1.水池中不同表面条件下卧式试验加热器的高热流密度沸腾实验测量了水池中镜面抛光的水平圆柱体和表面粗糙的水池中的过冷池沸腾临界热流密度，实验压力约为2 Mpa，过冷度可达60K。在相同的实验条件下，将计算结果与已获得商业表面的圆柱体的相应数据进行了比较。2.不同表面条件下卧式加热器在不同润湿液体中的高热流密度沸腾研究利用水平圆柱体在水和乙醇等高润湿液体的水池中测量了不同时间段过冷…的稳态和暂态CHF更多更多的压力。稳态CHF用不同压力下非均相自发成核的关联式表示。根据周期不同，一过性充血性心力衰竭可分为两个主要组。3.润湿液池中水平加热器快速降压的瞬变沸腾研究利用测量的乙醇换热过程，阐明了从自然对流和核沸腾状态下的初始热流密度到系统压力指数下降引起的膜沸腾状态的瞬变沸腾过程的特征，其中包括快速降压引起的瞬变CHF。4.高热流强化过冷流沸腾CHF的研究。在深入研究中，利用最近扩展的数据库，阐明了水平和垂直管内以出口压力为参数的过冷水流动沸腾CHF与出口过冷度之间的关系，导出了以出口压力为参数的不同管径和长径比的管内过冷水流动沸腾CHF与出口过冷度之间的关联式。较少

项目成果

Transition from natural convection or nucleate boiling to nucleate boiling or film boiling on a horizontal cylinder in pool subcooled wetting liquid by depressurization

通过减压在池过冷润湿液中的水平圆筒上从自然对流或核沸腾过渡到核沸腾或膜沸腾

• 发表时间: 2003
• 期刊: Proc.of the 10th International Topical Meeting on Nuclear Reactor Thermal Hydraulics
• 作者: Akira;Sakurai;Katsuya;Fukuda;福田 勝哉;Katsuya Fukuda;福田 勝哉;Akira Sakurai;Katsuya Fukuda
• 通讯作者: Katsuya Fukuda

圧力急減に伴うぬれやすい液体中の水平円柱における高圧下初期プール非沸騰又は沸騰から定常核沸騰又は膜沸騰への遷移

由于压力突然下降，在水平圆筒中可润湿液体中，从初始池不沸腾或沸腾转变为高压下的稳定核沸腾或薄膜沸腾

• 发表时间: 2004
• 期刊: 第41回日本伝熱シンポジウム講演論文集
• 作者: R.Taniguchi;T.Araki;T.Kojima;S.Okuda;K.Morita et al.;K.Morita et al.;福田 勝哉
• 通讯作者: 福田 勝哉

高濡れ性液体の沸騰伝熱現象に関する実験的研究

高润湿液体沸腾传热现象的实验研究

• 发表时间: 2004
• 期刊: 日本マリンエンジニアリング学会誌 第39巻第10号
• 作者: R.Taniguchi;T.Araki;T.Kojima;S.Okuda;K.Morita et al.;K.Morita et al.;福田 勝哉;朴 鍾徳;Katsuya Fukuda;福田 勝哉;福田 勝哉
• 通讯作者: 福田 勝哉

Photographic study on transient critical heat flux depending on surface conditions of test heater in various liquids due to exponential increasing heat inputs

由于热输入呈指数增加，瞬态临界热通量取决于各种液体中测试加热器的表面条件的摄影研究

• 发表时间: 2004
• 期刊: Proc.of the 6th International Symposium on Heat Transfer
• 作者: Katsuya;Fukuda;Qiusheng;Liu;Jongdock;Park;Hayato;Kida
• 通讯作者: Kida

Mechanisms of subcooled water flow boiling ultra-high CHFs in short small diameter tubes for high flow velocities at high pressures

过冷水流在短小直径管中沸腾超高 CHF 的机制，以实现高压下的高流速

• 发表时间: 2003
• 期刊: Proc.of the 10th International Topical Meeting on Nuclear Reactor Thermal Hydraulics
• 作者: Akira;Sakurai;Katsuya;Fukuda;福田 勝哉;Katsuya Fukuda;福田 勝哉;Akira Sakurai
• 通讯作者: Akira Sakurai