本文關(guān)鍵詞： 激光光學(xué) 強(qiáng)激光 導(dǎo)光鏡 溫度場(chǎng) 計(jì)算流體力學(xué)　出處：《中國(guó)激光》2017年10期 　論文類(lèi)型：期刊論文

【摘要】：為降低導(dǎo)光鏡面激光輻照區(qū)的溫度梯度,利用有限體積法求解三維湍流傳熱方程,得到激光輻照區(qū)溫度場(chǎng)分布,研究了矩形流道尺寸參數(shù)、冷卻液的濃度與流速等因素對(duì)導(dǎo)光鏡面平均溫升和溫升差的影響,并設(shè)計(jì)了雙流道結(jié)構(gòu)。結(jié)果表明,對(duì)于單流道,鏡面輻照區(qū)溫度場(chǎng)不隨其幾何中心呈對(duì)稱(chēng)分布,最高溫度點(diǎn)位于流道下游;增大流道截面尺寸和冷卻液流速可以提高換熱效果;流道不同面之間的溫度分布并不相同;乙二醇冷卻液濃度越高,換熱效果越差;相比于單流道結(jié)構(gòu),雙流道結(jié)構(gòu)的平均溫升降低幅度最大可達(dá)17.79%,溫升差降低幅度最大可達(dá)67.97%。
[Abstract]:In order to reduce the temperature gradient in the laser irradiated area of light guide mirror, the three-dimensional turbulent heat transfer equation was solved by the finite volume method, and the temperature field distribution in the laser irradiated area was obtained. The size parameters of the rectangular channel were studied. The effects of the concentration and flow rate of the coolant on the average temperature rise and the temperature rise difference of the light guide mirror are studied. The results show that for the single channel, the temperature field does not distribute symmetrically with the geometric center. The maximum temperature point is located downstream of the channel, the heat transfer effect can be improved by increasing the channel cross section size and coolant flow rate, the temperature distribution between different surfaces of the channel is different, the higher the concentration of ethylene glycol coolant is, the worse the heat transfer effect is. Compared with the single channel structure, the maximum decrease range of the average temperature rise of the double channel structure can be as high as 17.79, and the maximum decrease of the temperature rise difference can be as high as 67.97.
【作者單位】： 中國(guó)科學(xué)院長(zhǎng)春光學(xué)精密機(jī)械與物理研究所;中國(guó)科學(xué)院大學(xué);
【基金】：中國(guó)科學(xué)院長(zhǎng)春光學(xué)精密機(jī)械與物理研究所三期創(chuàng)新工程資助項(xiàng)目(09J52SCN90)
【分類(lèi)號(hào)】：TN24

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