西华大学学报(自然科学版)
西華大學學報(自然科學版)
서화대학학보(자연과학판)
JOURNAL OF XIHUA UNIVERSITY(NATURAL SCIENCE EDITION)
2015年
4期
83-87
,共5页
唐孛%李庆刚%成华友%葛凯
唐孛%李慶剛%成華友%葛凱
당패%리경강%성화우%갈개
七喷嘴%细水雾%参数优化%CFX仿真
七噴嘴%細水霧%參數優化%CFX倣真
칠분취%세수무%삼수우화%CFX방진
seven-nozzle%water mist%parameter optimization%CFX simulation
为解决单喷嘴细水雾喷头雾化锥角较小及多喷嘴组合式细水雾喷头体积与流量较大等问题,设计一种新型直射混合旋流式七喷嘴的细水雾喷头,研究喷头结构参数与型式对喷头雾化效果的影响,并在多个压力工况下对最优结构配比喷头进行数值模拟。仿真结果表明:新型七喷嘴直射混合旋流式细水雾喷头能够获得较大轴向动量和径向动量,且由7个喷嘴有效地增大了喷头的雾化保护锥角,在1.2 MPa工况理想状况下喷雾保护锥角最大可达146.3°,流量特性系数K在3.82~3.87之间,具有足够的喷射强度。
為解決單噴嘴細水霧噴頭霧化錐角較小及多噴嘴組閤式細水霧噴頭體積與流量較大等問題,設計一種新型直射混閤鏇流式七噴嘴的細水霧噴頭,研究噴頭結構參數與型式對噴頭霧化效果的影響,併在多箇壓力工況下對最優結構配比噴頭進行數值模擬。倣真結果錶明:新型七噴嘴直射混閤鏇流式細水霧噴頭能夠穫得較大軸嚮動量和徑嚮動量,且由7箇噴嘴有效地增大瞭噴頭的霧化保護錐角,在1.2 MPa工況理想狀況下噴霧保護錐角最大可達146.3°,流量特性繫數K在3.82~3.87之間,具有足夠的噴射彊度。
위해결단분취세수무분두무화추각교소급다분취조합식세수무분두체적여류량교대등문제,설계일충신형직사혼합선류식칠분취적세수무분두,연구분두결구삼수여형식대분두무화효과적영향,병재다개압력공황하대최우결구배비분두진행수치모의。방진결과표명:신형칠분취직사혼합선류식세수무분두능구획득교대축향동량화경향동량,차유7개분취유효지증대료분두적무화보호추각,재1.2 MPa공황이상상황하분무보호추각최대가체146.3°,류량특성계수K재3.82~3.87지간,구유족구적분사강도。
In order to solve problem that atomization angle of the single- nozzle with water mist is too small and the problem that volume and flow of combined multi-nozzle with water mist is too big, a new type of seven-nozzle with perpendicular incidence rotation-al flow atomization water mist has been designed by studying the effect of the structural parameters and the type of the nozzle on nozzle atomization and having numerical simulation on the nozzle under optimal structural control and multi-pressure. The simulation result shows that:the new type of seven-nozzle can acquire greater axial and radial momentum;the structure of the seven-nozzle effectively enlarges the atomization angle;under the pressure of 1. 2Mpa, the maximum angle can enlarge to 146. 3°;the nozzle has enough jetting strength because the flow coefficient K of the seven-nozzle is between 3. 82 and 3. 87.