臺灣博碩士論文加值系統

研究熱源所造成的溫度分怖,多以圓盤熱源為研究對象,然而圓盤有明
顯高溫集中區較難達到溫度均云。在二維問題中以圓環內為同溫區,在三
維的情形其結果將是如何變化,將是本文所注意。 本文以圓柱內含圓環
熱源為研究領域,有三大部份: 1.數值方法 2.實驗方法
3.無因次參數分析 經由以上研究,距加熱環愈近則溫差斜率愈大,無因
次參數的比較可得到當圓柱高度與圓柱半徑之比值為0.8以上,三維圓環熱
源加熱平面之溫度分佈將呈現穩定不變。

The temperature distribution due to a heat source has been a
subject of studies in the literature. In the litreature, disk
shape heat source wasstudies. However, obvious peak temperature
is found for disk heat sourceever at a distance from the heat
source. This study analyzed a ring heatsource. particularly on
the effects of more even temperature distributionas resulted. In
two dimension problem, the inside of a constant patentialring is
a equal potential area.It is worth an analysis when a heated
ringis applied to a three dimensional solid body. This study
used an embedded ring heater in a cylinder as a subject
ofstudy, consists of three areas of work: 1.Numerical
analysis. 2.Experimental measurements. 3.Dimensionless
analysis. The above study found that the temperature at the
central point of thering decrease as the ring diameter
increase. Also, the temperature gradient is very steep
near the ring and the magnitude of the slope decreases fast
after a distance. It was also found that at a distance of0.8
diameter away from the ring, even temperature distribution
can be obtained.