Hareketli ısı kaynağı ile bir yüzeyinden ısıtılan plakada sıcaklık ve termal gerilme dağılımları

Bu çalışmada, durgun çevre şartları altında hareketli ısı kaynağı ile bir yüzeyinden ısıtılan plakadaki sıcaklık ve termal gerilme dağılımlarının sayısal analizi yapılmaktadır. Hareketli ısı akısı profili olarak Gauss dağılımı seçilmiştir. Isı kaynağı z ekseni etrafında sabit açısal bir hızla ($Omega$) dönerken, plaka da eksenel yönde ilerleme hareketi yapmaktadır. Sayısal çözümler, çeliğin farklı ısı iletim katsayıları ($lambda$ = 10’dan 50 W/m-K’ne kadar) ve ısı kaynağının farklı $Omega$’ları (5 ve 10 rpm) için gerçekleştirilmektedir. Isı kaynağı, plakanın çok küçük bir bölgesine etki etmesinden dolayı uniform olmayan dik sıcaklık gradyantları oluşturmaktadır.

Temperature and thermal stress distribution in a plate heated from one side surface with a moving heat source

In this study, temperature and thermal stress distributions in a steel plate heated from its one side surface under stagnant ambient conditions by a moving heat source are analyzed numerically. Gauss distribution was chosen as a moving heat source profile. While the heat source rotates with a constant angular speed ($Omega$) around the z axis, the plate moves forward the axial direction. The numerical solutions have been performed for the different thermal conductivity of steel ($lambda$ =10 to 50 W/m-K) and for the different $Omega$s of heat source (5 and 10 rpm). Heat source produces the non-uniform steep temperature gradients source due to the fact that the heat flux is subjected on a very small section of the plate.

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