ACCOUNTING FOR SENSOR ERRORS IN ESTIMATION OF SURFACE HEAT FLUX BY AN INVERSE METHOD

机译：逆方法估算表面热通量中的传感器误差

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Thermocouples or other measuring devices are often embedded into a solid to provide data for an inverse calculation. It is well-documented that such installations will result in erroneous (biased) sensor readings, unless the thermal properties of the measurement wires and surrounding insulation can be carefully matched to those of the parent domain. Since this rarely can be done, or doing so is prohibitively expensive, an alternative is to account for the sensor dynamics with an appropriate model.In this paper we simulate a thermocouple embedded in a sand mold near the interface of a solidifying aluminum casting. The effect of sensor errors is accounted for by generating correction kernels from a detailed model of the embedded thermocouple. The corrected sensor readings are used in the inverse heat conduction solution. The magnitude of the effect is shown by comparing surface heat fluxes computed with measured temperatures to the heat fluxes computed with corrected temperatures.

机译：通常将热电偶或其他测量设备嵌入到实体中，以提供用于逆计算的数据。有据可查的是，除非可以仔细地将测量导线和周围绝缘材料的热性能与母域的热性能相匹配，否则此类安装会导致传感器读数错误（有偏）。由于很少能做到这一点，或者这样做的成本过高，因此，另一种方法是使用合适的模型来考虑传感器的动态特性。在本文中，我们模拟了在凝固的铝铸件界面附近嵌入砂模中的热电偶。传感器误差的影响是通过从嵌入式热电偶的详细模型生成校正内核来解决的。校正后的传感器读数用于反向导热溶液中。通过将用测得的温度计算出的表面热通量与用校正后的温度计算出的热通量进行比较，可以显示出影响的大小。

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《HT2008;ASME summer heat transfer conference》|2009年|69-75|共7页
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Jonathan W. Woolley; Keith A. Wood bury;
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c_p: specific heat; E: distance between wire tip and heated surface; f: klk_w = ratio of thermal conductivities; g: R/E = ratio of wire radius to distance from heated surface; h(r, z, t): temperature rise at a point (r, z) due to a unit step increase in the surface heat flux q;

机译：c_p：比热; E：焊丝尖端与被加热表面之间的距离; f：klk_w ＝热导率比; g：R / E =焊丝半径与到加热表面的距离之比; h（r，z，t）：由于表面热通量q的单位阶跃增加，在点（r，z）处的温度上升;

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4. ACCOUNTING FOR SENSOR ERRORS IN ESTIMATION OF SURFACE HEAT FLUX BY AN INVERSE METHOD [C] . ASME heat transfer conference . 2009

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5. Estimation of surface temperature, surface heat flux and heat transfer coefficient in the platform of inverse heat conduction problems. [D] . Soujoudi, Ramin. 2013

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6. Estimation of Surface Heat Flux and Surface Temperature during Inverse Heat Conduction under Varying Spray Parameters and Sample Initial Temperature [O] . Muhammad Aamir, Qiang Liao, Xun Zhu, -1

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7. The Fundamental and Application of Surface Heat Flux Estimation by Inverse Method in Cryogen Spray Cooling [O] . Bin Chen, Jia-Meng Tian, Zhi-Fu Zhou 2020

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8. Estimation of Surface Temperature and Heat Flux by Inverse Heat Transfer Methods Using Internal Temperatures Measured While Radiantly Heating a Carbon/Carbon Specimen up to 1920 F. [R] . Pizzo, M., Daryabeigi, K., Glass, D. 2015

机译：使用内部温度进行反向传热方法估算表面温度和热流量，同时测量碳/碳样品的辐射直至1920 F.

ACCOUNTING FOR SENSOR ERRORS IN ESTIMATION OF SURFACE HEAT FLUX BY AN INVERSE METHOD

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