HAREKETLİ ISI KAYNAĞI İLE BİR YÜZEYİNDEN ISITILAN PLAKADA SICAKLIK VE TERMAL GERİLME DAĞILIMLARI

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 (Ω) dönerken, plaka da eksenel yönde ilerleme hareketi yapmaktadır. Sayısal çözümler, çeliğin farklı ısı iletim katsayıları (λ = 10’dan 50 W/m-K’ne kadar) ve ısı kaynağının farklı Ω’ları (5 ve 10 rpm) için gerçekleştirilmektedir. Isı kaynağı, plakanın çok küçük bir bölgesine etki etmesinden dolayı uniform olmayan dik sıcaklık gradyantları oluşturmaktadır.

Anahtar Kelimeler:

Hareketli ısı kaynağı; sıcaklık dağılımı; termal gerilme.

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