Inverse estimation of heat flux and temperature on nozzle throat-insert inner contour

Chen, Tsung-Chien; Liu, Chiun-Chien

doi:10.1016/j.ijheatmasstransfer.2007.10.029

Cited by 23 publications

(6 citation statements)

References 16 publications

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“…The inverse heat conduction problems (IHCP) are to measure the temperature at the heat conduction system boundary or internal point or points by using the experimental method to obtain partial temperature information and inverse some unknown parameters: the boundary condition, material thermophysical parameter, internal heat source and boundary geometry, and so on [1][2][3][4]. The IHCP researches have wide application background and are nearly applied in all fields of science engineering: the aerospace engineering, bioengineering, power engineering, machine manufacturing, chemical engineering, nuclear physics, metallurgy, material processing, equipment geometry optimization, nondestructive testing, and so on [5][6][7][8][9]. The domestic and foreign scholars have made many researches on IHCP.…”

Section: Introductionmentioning

confidence: 99%

Solving of Two‐Dimensional Unsteady Inverse Heat Conduction Problems Based on Boundary Element Method and Sequential Function Specification Method

2018

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The boundary element method (BEM) and sequential function specification method (SFSM) are used to research the inverse problem of boundary heat flux identification in the two-dimensional heat conduction system. The future time step in the SFSM is optimized by introducing the residual error principles to get the more accurate inversion results. For the forward problems, the BEM is used to calculate the required temperature value of discrete point; for the inverse problems, the impacts of different future time steps, measuring point position, and measuring error on the inversion results are discussed. Furthermore, the comparison is made for the optimal future time step obtained by introducing the residual error principle and the inherent future time step. The example analysis shows that the method proposed still has higher accuracy when the measuring error exists or the measuring point position is far away from the boundary heat flux.

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Section: Introductionmentioning

confidence: 99%

Solving of Two‐Dimensional Unsteady Inverse Heat Conduction Problems Based on Boundary Element Method and Sequential Function Specification Method

2018

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“…The developed model is created by FEM code based on the updated lagrangian formulation. Tsung-Chien Chen, and Chiun-Chien Liu [6] presented an analytical method for thermal design of the protection layer in the solid rocket motor by simulating the measured temperature on throat-insert of the nozzle to estimate the heat flux in the inner wall on-line with accuracy. The thermo-structural transient response of a composite rocket nozzle using a thin protective layer was predicted using FEM by Vandenboom and Heister [7], and a variety of structural and thermal results are presented for both the substrate and the protective layer.…”

Section: Introductionmentioning

confidence: 99%

Thermo-structural Analysis of Steel-Composite Wall Nozzle

Gomaa¹,

Huang²

2016

IJMO

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Abstract-Studying of the thermo-structural response of steel-composite rocket nozzle is carried out using ANSYS. A validation of ANSYS for thermal and structural analysis is done first for simple problems, then the analysis done with the nozzle. The result of thermal analysis shows that thermal loads have a great effect in generating a huge amount of stresses on the nozzle structure (more than 60% from the total stresses on the nozzle). The convictive heat transfer coefficient has a great effect on the temperature transferred to the nozzle wall. The composite material resists temperature augmentation, so it is regarded as a thermal protection material.

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“…Discovery of carbon-carbon composites in 1958 by Brennan Chance Vought Aircraft created an opportunity to these principle materials for heat shielding appliances due to their high strength and thermal resistance [1]. Rayon carbon fabric reinforced phenolic (C-Ph) composites are the broadly used thermal protection systems due to the low thermal conductivity of the rayon fabric and high char yields of the phenolic resin.…”

Section: Introductionmentioning

confidence: 99%

“…This incident paves way for a detailed research to enhance impact tolerances, thermal resistance, and fracture toughness of the RCC panels [3]. Polymer nanocomposites are the three phase composite systems invented by Toyota research group, wherein nanosize particles, dispersed in the two phase fiber reinforced composites, exhibit enhanced structural rigidity and ablation resistance [1]. Nanocomposites have the capability to withstand the simultaneous action of thermal stresses and mechanical impact loads.…”

Section: Introductionmentioning

confidence: 99%

Hybrid Carbon-Carbon Ablative Composites for Thermal Protection in Aerospace

Sanoj

Kandasubramanian

2014

Journal of Composites

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Composite materials have been steadily substituting metals and alloys due to their better thermomechanical properties. The successful application of composite materials for high temperature zones in aerospace applications has resulted in extensive exploration of cost effective ablative materials. High temperature heat shielding to body, be it external or internal, has become essential in the space vehicles. The heat shielding primarily protects the substrate material from external kinetic heating and the internal insulation protects the subsystems and helps to keep coefficient of thermal expansion low. The external temperature due to kinetic heating may increase to about maximum of 500 ∘ C for hypersonic reentry space vehicles while the combustion chamber temperatures in case of rocket and missile engines range between 2000 ∘ C and 3000 ∘ C. Composite materials of which carbon-carbon composites or the carbon allotropes are the most preferred material for heat shielding applications due to their exceptional chemical and thermal resistance.

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Inverse estimation of heat flux and temperature on nozzle throat-insert inner contour

Cited by 23 publications

References 16 publications

Solving of Two‐Dimensional Unsteady Inverse Heat Conduction Problems Based on Boundary Element Method and Sequential Function Specification Method

Solving of Two‐Dimensional Unsteady Inverse Heat Conduction Problems Based on Boundary Element Method and Sequential Function Specification Method

Thermo-structural Analysis of Steel-Composite Wall Nozzle

Hybrid Carbon-Carbon Ablative Composites for Thermal Protection in Aerospace

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