Analysis of the accuracy of the inverse marching method used to determine thermal stresses in cylindrical pressure components

• Autorzy: Jaremkiewicz Magdalena

Identyfikatory

DOI

10.24425/ather.2024.152000

• Języki publikacji: EN

Abstrakty

EN

This paper analyses the inverse marching method used to determine the thermal stresses on the inner surface of a thick-walled cylindrical element not weakened by holes in the transient state. The heat conduction problem was considered one-dimensional, i.e. it was assumed that heat is transferred only in the radial direction. The method is based on measuring the temperature inside the pipeline wall at a single point and assuming that the pipeline is thermally insulated. The paper undertook an evaluation of the influence of the measuring point's distance from the inner surface, the number of control volumes into which the inverted area was divided and the length of the time step on the accuracy of the calculated temper-ature, heat transfer coefficient and thermal stresses on the inner surface of the pressure element. Verification was performed by comparing the calculation results obtained from the direct analytical method perturbed by random errors with those obtained from the numerical inverse step method.

Słowa kluczowe

EN

thermal stresses; inverse heat conduction problem; finite volume method

• Wydawca: Wydawnictwo Instytutu Maszyn Przepływowych PAN ; Komitet Termodynamiki i Spalania PAN
• Czasopismo: Archives of Thermodynamics
• Rocznik: 2024
• Tom: Vol. 45, no. 4
• Strony: 95--105
• Opis fizyczny: Bibliogr. 30 poz.

Twórcy

autor

Jaremkiewicz Magdalena

• Cracow University of Technology, Faculty of Environmental and Energy Engineering, ul. Warszawska 24, Cracow 31-155, Poland

Bibliografia

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