Study on the Development of Automatc Line-Heating System

自动线加热系统的研制研究

基本信息

  • 批准号:
    10555340
  • 负责人:
  • 金额:
    $ 7.42万
  • 依托单位:
  • 依托单位国家:
    日本
  • 项目类别:
    Grant-in-Aid for Scientific Research (B)
  • 财政年份:
    1998
  • 资助国家:
    日本
  • 起止时间:
    1998 至 2000
  • 项目状态:
    已结题

项目摘要

In order to automate Line-heating process, an estimation method of heat transfer between flame and plate is developed. The major results obtained are as follows.1) It is found that the temperature distribution near the plate can be estimated by calculating the heat flow of non-combustion impinging-jet in place of the combustion flame. In this approach, it is needed to give the temperature and velocity of the Virtual non-combustion gas at the nozzle exit as the calculation Conditions. For 2-dimensional gas flame, close agreement, between observed and calculated temperature near the plate surface was obtained when the highest temperature within the flame and the velocity of gas mixture at the upstream side of the nozzle was employed as the temperature and velocity of the virtual gas at the exit.2) It is found that the local heat transfer coefficient can evaluated by the logarithmic law (wall law). Appropriateness of this formulation was proved experimentally for 2-dimensional gas flame.3) The transient 3-dimensional temperature distribution within the gas flame during line heating is measured in detail by a high performance L.I.F. measurement system. It has been found that the relative distribution of gas temperature around the torch is almost the same as that in spot heating. It has also been found that this relative distribution is almost unchanged regardless of the temperature increase in the steel plate. These results lead us to a new hypothesis that the relative distributions of gas temperature and local heat transfer coefficient around the torch remain unchanged and they are almost the same as those in spot heating during line heating process. A new method of heat input estimation for line heating process based on this hypothesis has been propounded.
为了实现水火弯板生产过程的自动化,提出了火焰与板间传热的估算方法。主要结果如下:1)通过计算非燃烧冲击射流的热流,可以代替燃烧火焰来估算平板附近的温度分布。在该方法中,需要给出喷管出口虚拟非燃烧气体的温度和速度作为计算条件。对于二维气体火焰,当火焰内最高温度和喷嘴上游侧混合气体速度作为出口处虚拟气体的温度和速度时,平板表面附近温度的计算值与实测值吻合较好。2)发现局部换热系数可用对数定律(壁面定律)计算。3)利用高性能激光干涉荧光仪(L.I.F.)详细测量了水火弯板加热过程中燃气火焰内的三维瞬态温度分布。测量系统结果表明,火焰周围的相对温度分布与点加热时的基本一致。还发现,无论钢板中的温度升高如何,该相对分布几乎不变。这些结果使我们提出了一个新的假设,即在线加热过程中,火炬周围的气体温度和局部传热系数的相对分布保持不变,它们几乎与点加热相同。在此基础上,提出了水火弯板热输入估算的新方法。

项目成果

期刊论文数量(42)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
新海信隆,冨田康光,大沢直樹,橋本聖史,澤村淳司: "線状加熱における熱源移動時の加熱ガス流場の解析方法に関する研究"関西造船協会誌. 234. 229-235 (2000)
新海信隆、富田康光、大泽直树、桥本雅志、泽村润二:“线性加热时热源移动时加热气体流场的分析方法研究”关西造船协会杂志234. 229-235(2000)。
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    0
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  • 通讯作者:
Sinkai N., Tomita Y., Osawa N., Hashimoto K. and Sawamura J.: "Experimental study on thermo-flow field during line heating process by using LIF measurement"Proc. 11th ISOPE. Vol. 4. 595-601
Sinkai N.、Tomita Y.、Osawa N.、Hashimoto K. 和 Sawamura J.:“利用 LIF 测量对管道加热过程中的热流场进行实验研究”Proc。
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    0
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冨田康光、橋本聖史、大沢直樹、澤村淳司、新海信隆: "線状加熱における燃焼流場の数値シュミレーション"関西造船協会誌. 232. 155-161 (1999)
富田康光、桥本正史、大泽直树、泽村淳二、新海信孝:“线性加热中燃烧流场的数值模拟”关西造船协会杂志 232. 155-161 (1999)。
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    0
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新海信隆, 冨田康光, 大沢直樹, 橋本聖史ほか: "線状加熱における熱源移動時の加熱ガス流場の解析方法に関する研究"関西造船協会誌. 234. 229-235 (2000)
新海信隆、富田泰光、大泽直树、桥本正史等:“线性加热时热源移动时加热气体流场的分析方法研究”关西造船协会杂志234. 229-235 (2000)。
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  • 影响因子:
    0
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  • 通讯作者:
Tomita Y., Hashimoto K., Osawa N., Yoshikawa M., Yorozu M., Shinkai N. and Kanada A.: "study on Approximate Analysis of Convective Heat transfer during Line-Heating Process"J. Soc. N. A. Japan. Vol. 184. 469-476 (1998)
Tomita Y.、Hashimoto K.、Osawa N.、Yoshikawa M.、Yorozu M.、Shinkai N.和 Kanada A.:“管道加热过程中对流换热的近似分析研究”J。
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OSAWA Naoki其他文献

OSAWA Naoki的其他文献

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{{ truncateString('OSAWA Naoki', 18)}}的其他基金

Elucidation of the generating mechanism of diffuse barrier discharge in air at atmospheric pressure
阐明大气压下空气中扩散势垒放电的发生机制
  • 批准号:
    19K04360
  • 财政年份:
    2019
  • 资助金额:
    $ 7.42万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
Concentration control of underwater products by electrical discharge inside barrier discharge treated gas bubbles and its application to plant growth promotion
阻挡放电处理气泡内放电控制水下产物浓度及其在促进植物生长中的应用
  • 批准号:
    16K06245
  • 财政年份:
    2016
  • 资助金额:
    $ 7.42万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
Reduction of By-products Emission from Air-fed Ozone Generator by Homogeneous Barrier Discharge
均质屏障放电减少空气供给臭氧发生器副产物排放
  • 批准号:
    25820111
  • 财政年份:
    2013
  • 资助金额:
    $ 7.42万
  • 项目类别:
    Grant-in-Aid for Young Scientists (B)
Increase in Ozone Generation Efficiency by Homogeneous Barrier Discharge in Air and Oxygen at Atmospheric Pressure
通过在大气压下对空气和氧气进行均匀阻挡放电来提高臭氧生成效率
  • 批准号:
    23760270
  • 财政年份:
    2011
  • 资助金额:
    $ 7.42万
  • 项目类别:
    Grant-in-Aid for Young Scientists (B)
Development of the crack detection system of the steel structures by using magnetic properties
利用磁特性的钢结构裂纹检测系统的研制
  • 批准号:
    16206084
  • 财政年份:
    2004
  • 资助金额:
    $ 7.42万
  • 项目类别:
    Grant-in-Aid for Scientific Research (A)
Study on Fatigue Crack Initiation and Propagation Process of Ship Structural Materials by Computational Mechanics Approach
计算力学方法研究船舶结构材料疲劳裂纹萌生和扩展过程
  • 批准号:
    14550859
  • 财政年份:
    2002
  • 资助金额:
    $ 7.42万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)

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H-GMP - 低氧环境中的良好生产规范
  • 批准号:
    131688
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    2014
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    Feasibility Studies
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    8000169
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TRP: Manufacturing Practice in Engineering Education
TRP:工程教育中的制造实践
  • 批准号:
    9413088
  • 财政年份:
    1994
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    06044266
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    1994
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Good Manufacturing Practice (GMP) and Immune Assessment Core
良好生产规范 (GMP) 和免疫评估核心
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Good Manufacturing Practice (GMP) and Immune Assessment Core
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