撞擊流內(nèi)顆粒旋轉(zhuǎn)特性的數(shù)值模擬
發(fā)布時(shí)間:2018-12-27 09:41
【摘要】:為了模擬撞擊流內(nèi)顆粒的旋轉(zhuǎn)特性,利用直接模擬蒙特卡洛(DSMC)方法,建立了考慮顆粒旋轉(zhuǎn)的氣固兩相撞擊流數(shù)理模型,并通過試驗(yàn)數(shù)據(jù)驗(yàn)證了該模型的正確性.利用所建模型模擬分析了撞擊流內(nèi)的顆粒旋轉(zhuǎn)特性,以及顆粒初速度、顆粒加料速率、顆粒直徑等對(duì)顆粒旋轉(zhuǎn)的影響.結(jié)果表明:撞擊流內(nèi)顆粒旋轉(zhuǎn)主要產(chǎn)生于撞擊區(qū);顆粒初速度越大,顆粒加料速率越大,顆粒直徑越小,均會(huì)造成撞擊區(qū)內(nèi)顆粒的平均轉(zhuǎn)速增大.
[Abstract]:In order to simulate the rotation characteristics of particles in an impinging stream, a mathematical model of gas-solid two-phase impingement flow considering particle rotation is established by using the direct simulation Monte Carlo (DSMC) method, and the correctness of the model is verified by experimental data. The effects of particle initial velocity, particle feeding rate and particle diameter on particle rotation were analyzed by using the model. The results show that the particle rotation in the impingement flow mainly occurs in the impact zone, and the larger the particle initial velocity, the larger the particle feeding rate and the smaller the particle diameter, which will result in the increase of the average speed of particle in the impingement zone.
【作者單位】: 江蘇大學(xué)能源與動(dòng)力工程學(xué)院;
【基金】:江蘇省自然科學(xué)基金資助項(xiàng)目(BK20130520) 江蘇省高校自然科學(xué)基金資助項(xiàng)目(13KJB470002) 江蘇省博士后科研資助計(jì)劃項(xiàng)目(1302024B)
【分類號(hào)】:O347.7
本文編號(hào):2392870
[Abstract]:In order to simulate the rotation characteristics of particles in an impinging stream, a mathematical model of gas-solid two-phase impingement flow considering particle rotation is established by using the direct simulation Monte Carlo (DSMC) method, and the correctness of the model is verified by experimental data. The effects of particle initial velocity, particle feeding rate and particle diameter on particle rotation were analyzed by using the model. The results show that the particle rotation in the impingement flow mainly occurs in the impact zone, and the larger the particle initial velocity, the larger the particle feeding rate and the smaller the particle diameter, which will result in the increase of the average speed of particle in the impingement zone.
【作者單位】: 江蘇大學(xué)能源與動(dòng)力工程學(xué)院;
【基金】:江蘇省自然科學(xué)基金資助項(xiàng)目(BK20130520) 江蘇省高校自然科學(xué)基金資助項(xiàng)目(13KJB470002) 江蘇省博士后科研資助計(jì)劃項(xiàng)目(1302024B)
【分類號(hào)】:O347.7
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