發(fā)布時(shí)間：2018-05-24 19:00

  本文選題：噴霧降塵 + 氣液兩相流　； 參考：《煤礦安全》2017年03期

【摘要】：為解決煤礦噴霧降塵效率低和噴霧用水量大易造成巷道水害問題,依據(jù)氣液兩相流理論,應(yīng)用Fluent軟件對霧滴在不同噴嘴壓力作用下粒徑分布和運(yùn)移規(guī)律進(jìn)行數(shù)值模擬,得到霧粒濃度和粒徑分布情況。研究表明:噴霧壓力影響霧粒的分布范圍。壓力過大,霧粒在巷道內(nèi)的分布面積逐漸減小。同一噴嘴壓力下霧粒粒徑分布不均勻,在橫截面上呈現(xiàn)中間粒徑小,兩邊粒徑大的規(guī)律。當(dāng)噴霧壓力為3 MPa時(shí),霧粒的分布利于降塵且距噴嘴2.8 m處霧化效果最好。
[Abstract]:In order to solve the problem of tunnel water hazard caused by low efficiency of spray dust control and large amount of spray water consumption, according to the theory of gas-liquid two-phase flow, the particle size distribution and migration law of droplets under different nozzle pressure were numerically simulated by Fluent software. The particle concentration and particle size distribution were obtained. The results show that spray pressure affects the distribution of aerosol particles. If the pressure is too large, the distribution area of fog particles in the roadway decreases gradually. Under the same nozzle pressure, the particle size distribution is not uniform, and the middle particle size is small and the size of both sides is large in the cross section. When the spray pressure is 3 MPa, the distribution of aerosol particles is favorable to dedusting and the atomization effect is the best at 2.8m from the nozzle.
【作者單位】： 中北大學(xué)機(jī)械與動(dòng)力工程學(xué)院;中北大學(xué)先進(jìn)制造技術(shù)山西省重點(diǎn)實(shí)驗(yàn)室;
【基金】：國家自然科學(xué)基金資助項(xiàng)目(U1261107) 先進(jìn)制造技術(shù)山西省重點(diǎn)實(shí)驗(yàn)室開放基金資助項(xiàng)目(XGZZ201601-06)
【分類號(hào)】：TD714.4

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1 聶濤;旋流式噴嘴霧化特性研究[D];太原理工大學(xué);2016年

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本文編號(hào)：1930190