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RH-KTB氧枪射流特性的数值模拟

Jiangxi Metallurgy(2021)

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Abstract
以西昌钢钒200 t RH-KTB真空精炼装置为原型,借助CFD数值模拟的方法,通过分析射流马赫数、射流动压和半射流宽度,研究了常压及真空条件下超音速氧气射流的特性.研究结果表明:射流马赫数随着环境压力的降低而增加,但以牺牲流动稳定性为代价;尽管存在"流动不稳定"的情况,但适当降低环境压力至10000 Pa有助于减小半射流宽度;当环境压力降至1000 Pa时,射流变得非常不稳定,膨胀严重不足会使流动在0.9 m处出现真空断层.
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