鼓風機內部流場仿真

1 YINYAN

GUFENGJISHIYIZHONGCHANGJIANDEXIELUNJIXIE,ZAIXIANDAIGONGYEZHONGYINGYONGGUANGFAN。GUFENGJIDEXINGNENGQUJUEYUFENGJIDEZHENGTISHEJI,YOUQISHIFENGJIXIEPIANDESHEJI。CHUANTONGDEGUFENGJIDESHEJIFANGFATONGCHANGCAIYONGSHEJI→YANGJIXINGNENGSHIYANJIANCE→ZHIZAODEGUOCHENG,YANGPINDEZHIZAOHESHIYANYAOJINGGUODUOCI,SHEJIYEYAOZHONGFUDUOCI,LANGFEILEDALIANGDERENLI、WULIHESHIJIAN。CAIYONGJISUANLIUTILIXUEDEFANGFADUIGUFENGJINEIBULIUCHANGJINXINGFANGZHEN、YOUHUA,BIJIAOBUTONGSHEJIDEZENGYAXIAOGUO,NENGGOUYOUXIAODEJIANGDISHIYANCHENGBEN,TIGAOSHEJIXIAOLV。

2 GUFENGJIDECFDFANGZHEN

2.1 WULIMOXINGJIWANGGECHULI

BENCISHIYONGERWEIGUFENGJIMOXINGDUIXUANZHUANJIXIENEIBULIUCHANGDEFANGZHENFANGFAJINXINGJIANDANDEZHANSHI,QITADEXINGSHILEISIDEXUANZHUANJIXIERUBENG,KECAIYONGXIANGTONGDEFANGZHENFANGFA,BENCIJINXINGERWEILIUCHANGFANGZHENDELIXINGUFENGJIHUANYOU32GEXIEPIAN,MEIYIGEXIEPIANDEXIANCHANGWEI13.5mm,XIEPIANQIANYUANJULIZHONGXINWEIZHIDAYUE56.5mm。WAIBIMIANDEBANJINGYIZHISHUXINGSHICONG80mmZENGJIADAO146.5mm。JINKOUCHUZONGYASHEZHIWEI200Pa,RANHOUCHUKOULIURUHUANJING(JINGYAWEI0Pa)。SUOYOUDEXIEPIANDOUYI261rad/sJIAOSUDUJINXINGXUANZHUAN。

TU1 LIXINGUFENGJIWANGGESHITU

ZAIJIANLIWULIMOXINGSHI,ZHENGGEGUFENGJIDEMOXINGHUAFENWEISANGEQUYU,GUFENGJIDEXIEPIANQUYU、XIEPIANNEIBULIUCHANGQUYUHEXIEPIANWAIBULIUCHANGQUYU。YOUYUGUFENGJIDEXIEPIANLIUCHANGQUYUSUDUBIANHUABIJIAODA,YIDUIXIEPIANZHOUWEIDEJISUANWANGGEJINXINGWANGGEJIAMICHULI。

2.2 SHUXUEMOXING

TUANLIUMOXINGCAIYONGk-εMOXINGJINXINGJISUAN,SHEDINGJIEZHIWEIKONGQI,YOUYUZAIGUFENGJIDENEIBUKONGQILIUSUJIAODI,QISUYIBANBUCHAOGUO0.3Ma,SUOYIRENWEIGUFENGJINEIBUDEKONGQIBUKEYASUO。YINCIFANGZHENGUOCHENGZHONGYONGDAODEZHILIANGSHOUHENGFANGCHENG、DONGLIANGSHOUHENGFANGCHENG、TUANLIUDONGNENGFANGCHENGkFANGCHENGHEKUOSANFANGCHENGeFANGCHENGFENBIERUSHI(1)、(2)、(3)、(4)SUOSHI。QIZHONGGkHEGbFENBIEBIAOSHIYOUPINGJUNDESUDUTIDUYIJIFULIZUOYONGCHANSHENGDETUANLIUDONGNENG;YMBIAOSHIKEYASUOTUANLIUCHANSHENGDEMODONGCHENGDUDUIYUZHENGTIDEHAOSANLVDEZUOYONG;RεFANYINGLIUTIYIBIANXINGDECHENGDUDEYINGXIANG;SkHESεFENBIESHIZIDINGYIYUANXIANG;μt,kWEIYEXIANGTUANLIUDENIANDU。QITAWEICHANGSHU,QIZHIWEI:G1ε=1.42;G2ε=1.68;G3ε=1.3; Gμ=0.0845; σk=1.0;σε=1.3。

2.3 QITAQIUJIETIAOJIANSHEZHI

BENCIFANGZHENHANYOUYIKUAIDONGQUYU,LIANGKUAIJINGQUYU,LIUCHANGFANGZHENCAIYONGDESHIMRFMOXING,ZAICell ZoneXUANXIANGZHONGSHEZHIXIEPIANQUYUWEIXUANZHUANDONGQUYU,XUANZHUANDEYUANXINWEI(0,0),XUANZHUANDEJIAOSUDUWEI261rad/s,QITALIANGPIANQUYUSHEZHIWEIJINGZHIQUYU。

ZAIBIANJIETIAOJIANZHONG,XIEPIANQUYUNEIWAILIANGCEBIANJIEBEIMORENSHEZHIWEIwall,DANYOUYUXIEPIANQUYUWEIYUGUFENGJINEIBU,XUYAOZAIFluentZHONGJIANGQIBIANJIETIAOJIANXIUGAIWEIinterior;TONGSHIGUFENGJIDEXIEPIANWEIYUXUANZHUANQUYUDENEIBU,XUYAOJIANGQIBIMIANSHEZHIWEIYUNDONGBIMIAN,ZAISHEZHIGUOCHENGZHONGXUANZERalative to Adjacent Cell Zone,SHEZHIXIANGDUISUDUWEI0 Rad/s,ZHEYANGNEIBUDEXIEPIANJIUKEYIGENSUIYUNDONGQUYUZHUANDONG。SHEZHIJISUANFANGFAWEISIMPLE,YALI、DONGLIANG、TUANDONGNENG、TUANLIUHAOSANLVJUNXUANZEERJIEYINGFENGSUANFABAOZHENGJISUANDEJINGDU。

3 FANGZHENJIEGUO

TONGGUOFANGZHENDEFANGFAHUODEGUFENGJINEIDESUDUYUNTU,SUDUSHILIANGTUHEYALIYUNTU。TU2HETU3FENBIEWEIGUFENGJINEIDESUDUYUNTUHESUDUSHILIANGTU。CONGSUDUYUNTUZHONGKEYIKANCHU,XIEPIANNEIBUQISUBIJIAOXIAO,KONGQIDAODAXUANZHUANXIEPIANBINGBEIJIASUHOU,ZAIYUCHUKOUXIANGQIEDEXIEPIANCHUSUDUDADAOZUIGAO,DAYUEWEI64.4m/s。

TU2 SUDUYUNTU

TU3 SUDUSHILIANGTU

TU4WEIGUFENGJINEIBUDEZONGYALITU。CONGTUZHONGZAIXIEPIANNEIBUDEQUYUYALIWEIJINKOUYALI200Pa,ZHIHOUJINGGUOXIEPIANJIASUZHIHOUZONGYAZENGDA,ZAIYUCHUKOUXIANGQIEDEXIEPIANCHUZONGYADADAOZUIDA,CISHIZONGYADEDAXIAOWEI1190Pa。

TU4 ZONGYAYUNTU

TU5WEIGUFENGJINEIBUDEJINGYAYUNTU。CONGTUZHONGKEYIKANCHU,GUFENGJINEIBUDEXIEPIANCHUCUNZAIDIYAQU,ZHESHIYINWEIZHEBUFENQUYUSUDUBIJIAODA,SUOYIJINGYABIJIAOXIAO,ERZHIHOUYOUYUGUFENGJIDECHUKOUCHULIUDAOBUDUANKUODA,ZAILIULIANGSHOUHENGDEQINGKUANGXIA,SUDUJIANXIAO,ZAICHUKOUCHUDEJINGYABUDUANSHENGGAO。JINGYAZUIGAODEDIFANGSHIZAIGUFENGJIDEGUAKEFUJIN,ZHESHIYOUYUGUFENGJIDEGUAKEFUJINCAIYONGWUHUAYIDEBIMIANTIAOJIAN,CICHULIUTIDESUDUJIHUWEI0,ZAIZONGYAXIANGJINDEQINGXINGXIA,CICHUDEJINGYAZUIDA。

TU5 JINGYAYUNTU

4 JIELUN

BENWENJIANLILEMOUGUFENGJIDEERWEIMOXING,CAIYONGk-εTUANLIUMOXINGHEMRFFANGFADUIXUANZHUANXIEPIANJINXINGLELIUCHANGSHUZHIFANGZHENCHULI,FANGZHENJIEGUOXIANSHIJINGGUOGUFENGJIDEXIEPIANJIASUHOUNEIBULIUTIZAIXIEPIANYUCHUKOUXIANGQIEDEDIFANGDADAOZUIDA,ZUIDASUDUWEI64.4m/s,ZONGYAYUNTUHEJINGYAYUNTUYULILUNFENXIYIZHI,YOUCISHUOMINGLECFDFANGFAYONGYUGUFENGJISHEJIDEYOUXIAOXING。

CANKAOWENXIAN: