發(fā)布時間：2018-04-13 12:38

  本文選題：鋼渣 + 顆粒��； 參考：《工程科學(xué)學(xué)報》2016年09期

【摘要】：通過空冷固態(tài)高溫鋼渣顆粒實驗,由實驗數(shù)據(jù)擬合平均努塞爾數(shù)實驗關(guān)聯(lián)式.對空冷高溫鋼渣顆粒進(jìn)行三維數(shù)值模擬,研究不同繞流雷諾數(shù)下的準(zhǔn)則關(guān)系式,分析空氣外掠固態(tài)鋼渣顆粒影響因素.研究得出空氣冷卻固態(tài)鋼渣顆粒的實驗關(guān)聯(lián)式與數(shù)值計算關(guān)聯(lián)式,實驗與數(shù)值計算之間誤差較小,驗證了采用SST k-ω模型計算的可靠性.實驗結(jié)果表明:鋼渣顆粒的平均努塞爾數(shù)隨著繞流雷諾數(shù)、粒徑和氣體流速的增大而增大.在同等條件下,鋼渣粒徑對平均努塞爾數(shù)的影響作用大于氣體流速;模擬空冷高溫鋼渣顆粒時,直徑對鋼渣顆粒凝固時間的影響作用最大,導(dǎo)熱系數(shù)的影響作用次之,來流空氣溫度影響作用最小.
[Abstract]:The experimental correlation of average Nusselt number was fitted from the experimental data of air cooled solid steel slag particles.Three-dimensional numerical simulation of air-cooled high-temperature steel slag particles was carried out to study the criterion relationship under different flow Reynolds numbers and to analyze the influence factors of air swept solid steel slag particles.The experimental correlation formula and numerical calculation correlation formula of air-cooled solid steel slag particles are obtained. The error between experiment and numerical calculation is relatively small, which verifies the reliability of the calculation using SST k- 蠅 model.The experimental results show that the average Nusselle number of steel slag particles increases with the increase of Reynolds number, particle size and gas flow rate.Under the same conditions, the effect of the diameter of steel slag on the average Nussel number is greater than that of the gas flow rate, and the diameter has the greatest effect on the solidification time of the steel slag particle when simulating the air-cooled high-temperature steel slag particle, and the effect of the thermal conductivity is the second.The effect of air temperature is the least.
【作者單位】： 中南大學(xué)能源科學(xué)與工程學(xué)院;中南大學(xué)信息科學(xué)與工程學(xué)院;
【基金】：國家高技術(shù)研究發(fā)展計劃資助項目(2009AA064603)
【分類號】：X757
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本文編號：1744520