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Estimation of Thermal Barrier Coating Surface Temperature and Heat Flux Profiles in a Low Temperature Combustion Engine Using a Modified Sequential Function Specification Approach

机译:使用改进的序贯函数规范方法估算低温内燃机的热障涂层表面温度和热通量曲线

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摘要

A modified form of the sequential function specification method (SFSM) is developed with specific consideration given to multiple time scales in an effort to avoid overregulariza-tion of the solution estimates. The authors extend their approach to solve the inverse heat conduction problem (IHCP) associated with the application of thermal barrier coatings (TBC) to in-cylinder surfaces of an internal combustion engine. Subsurface temperature measurements are used to calculate surface heat flux profiles. The modified inverse solver is validated ex situ using a custom fabricated radiation chamber. The solution methodology is extended in situ to evaluate temperature data collected from a single-cylinder research engine operating in homogeneous charge compression ignition (HCCI) mode. Crank angle resolved, thermal barrier coating surface temperature and heat flux profiles are produced-enabling correlation of thermal conditions at the gas-wall boundary with engine performance, emission, and efficiency metrics.
机译:开发了一种顺序函数规范方法(SFSM)的改进形式,其中特别考虑了多个时间范围,以防止解决方案估计值过规。作者扩展了他们的方法来解决与导热涂层(TBC)应用于内燃机缸内表面相关的逆导热问题(IHCP)。地下温度测量用于计算表面热通量曲线。修改后的逆求解器使用定制的辐射室进行了非现场验证。该解决方案方法已在原位扩展,以评估从均质充量压缩点火(HCCI)模式下运行的单缸研究发动机收集的温度数据。产生了曲柄角,产生了隔热涂层表面温度和热通量曲线,从而使气壁边界处的热状况与发动机性能,排放和效率指标相关联。

著录项

  • 来源
    《Journal of Heat Transfer》 |2017年第4期|041201.1-041201.9|共9页
  • 作者单位

    International Center for Automotive Research, Department of Automotive Engineering, Clemson University, 4 Research Drive, Greenville, SC 29607;

    International Center for Automotive Research, Department of Automotive Engineering, Clemson University, 4 Research Drive, Greenville, SC 29607;

    International Center for Automotive Research, Department of Automotive Engineering, Clemson University, 4 Research Drive, Greenville, SC 29607;

    International Center for Automotive Research, Department of Automotive Engineering, Clemson University, 4 Research Drive, Greenville, SC 29607;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    inverse heat conduction; thermal barrier coatings; low temperature combustion;

    机译:逆导热隔热涂层;低温燃烧;

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