Inverse heat conduction estimation of inner wall temperature fluctuations under turbulent penetration

Guo, Zhenjiang; Lü, Tao; Liu, Bo

doi:10.1007/s11630-017-0925-8

Cited by 9 publications

(2 citation statements)

References 11 publications

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“…Such solutions are to be avoided, as there is no physical phenomenon behind such oscillations, only computational peculiarity. An extensive list of IHTP methods was provided in [8, 20, 21].…”

Section: Methodsmentioning

confidence: 99%

Inverse heat transfer problem solution of sounding rocket using moving window optimization

Dąbrowski¹,

Dąbrowski²

2019

PLoS ONE

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An Inverse Heat Transfer Problem is solved for a sounding rocket module given its geometry and measured temperature profile. The solution is obtained via moving window optimization, a technique for solving inverse dynamics. An analysis is performed to modify the method to avoid oscillatory behavior of the resulting heat flux profile. The method parameters are tuned in relation to characteristic phases of the flight. Results are presented and correlated with measured flight data. Conclusions are drawn for better experiments for measuring heat flux on a sounding rocket skin.

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Section: Methodsmentioning

confidence: 99%

Inverse heat transfer problem solution of sounding rocket using moving window optimization

Dąbrowski¹,

Dąbrowski²

2019

PLoS ONE

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“…Inverse heat transfer problems encompass a spectrum of classifications, including inverse heat conduction problems (the most prevalent), inverse heat convection problems, inverse heat radiation problems, and inverse heat conjugation problems. Researchers have comprehensively explored inverse problems related to heat conduction [1][2][3][4][5][6][7][8][9], heat convection [10][11][12][13][14][15][16], and heat radiation [17][18][19], employing diverse algorithms. However, investigations into inverse conjugate heat transfer problems [20][21][22] remain notably scarce within the available literature.…”

Section: Introductionmentioning

confidence: 99%

An Inverse Problem for Estimating Spatially and Temporally Dependent Surface Heat Flux with Thermography Techniques

Huang,

Fang

2024

Mathematics

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In this study, an inverse conjugate heat transfer problem is examined to estimate temporally and spatially the dependent unknown surface heat flux using thermography techniques with a thermal camera in a three-dimensional domain. Thermography techniques encompass a broad set of methods and procedures used for capturing and analyzing thermal data, while thermal cameras are specific tools used within those techniques to capture thermal images. In the present study, the interface conditions of the plate and air domains are obtained using perfect thermal contact conditions, and therefore we define the problem studied as an inverse conjugate heat transfer problem. Achieving the simultaneous solution of the continuity, Navier–Stokes, and energy equations within the air domain, alongside the heat conduction equation in the plate domain, presents a more intricate challenge compared to conventional inverse heat conduction problems. The validity of our inverse solutions was verified through numerical simulations, considering various inlet air velocities and plate thicknesses. Notably, it was found that due to the singularity of the gradient of the cost function at the final time point, the estimated results near the final time must be discarded, and exact measurements consistently produce accurate boundary heat fluxes under thin-plate conditions, with air velocity exhibiting no significant impact on the estimates. Additionally, an analysis of measurement errors and their influence on the inverse solutions was conducted. The numerical results conclusively demonstrated that the maximum error when estimating heat flux consistently remained below 3% and higher measurement noise resulted in the accuracy of the heat flux estimation decreasing. This underscores the inherent challenges associated with inverse problems and highlights the importance of obtaining accurate measurement data in the problem domain.

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Experimental study on temperature fluctuations on plate surface induced by coaxial-jet flow

Xiong,

Liu,

Zhou

et al. 2024

NUCL SCI TECH

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Inverse heat conduction estimation of inner wall temperature fluctuations under turbulent penetration

Cited by 9 publications

References 11 publications

Inverse heat transfer problem solution of sounding rocket using moving window optimization

Inverse heat transfer problem solution of sounding rocket using moving window optimization

An Inverse Problem for Estimating Spatially and Temporally Dependent Surface Heat Flux with Thermography Techniques

Experimental study on temperature fluctuations on plate surface induced by coaxial-jet flow

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