广西快3

离心压缩机叶轮S2流面正反命题的研究

作者:劲锋机械发布日期:2018-06-08

离心压缩机叶轮S2流面正反命题的研究

  孙正中 苏莫明 钱泽球/西北工业大学动力与能源学院    

广西快3ZHAIYAO: FENBIEDUILIUXIANQULVFAZHENGFANLIANGLEIMINGTIJINXINGLEYANJIU。ZHENGWENTIZHONG,LIYONGBEILVESHIDAIFENLIUYEPIANLIXINYASUOJIYELUNSUANLI,JISUANCHUZIWUMIANLIUCHANG,DUIGAIYELUNJINXINGLEXINGNENGFENXI。ZAIFANWENTIZHONG,GENJUJIDINGSHEJIDIANCANSHU,SHEJICHULEYIBEILVESHIYELUN。JIANYUQITIWOFENBUDEZHONGYAOXING,TAOLUNLEBUTONGLEIXINGFENBUDUIYELUNXINGNENGDEYINGXIANG,DECHUHOUJIAZAIXINGFENBUSHIHELIXINYASUOJIYELUNDEJIELUN。

广西快3GUANJIANCI: LIXINSHIYASUOJI ; LIUXIANQULVFA;XINGNENGFENXI;QUANKEKONGWO;SHEJI

ZHONGTUFENLEIHAO: TH452 WENXIANBIAOSHIMA:B

WENZHANGBIANHAO: 1006-8155(2007)06-0012-06

Research on the Forward and Inverse Proposition of S 2 Surface of Centrifugal Compressor Impeller

Abstract: This paper focuses on the forward and inverse proposition of streamline curvature method. In the forward proposition, a back-swept impeller with splitters is employed as a sample, the flow field in meridian surface is calculated, and the performance of this impeller is further analyzed. In the inverse proposition, a back-swept impeller is designed upon the parameters of design point. For the significance of vortex distribution, different types of vortex distribution and corresponding flow fields are presented, and come to the conclusion that the later-loading type gives better performance for centrifugal impeller.

Key words: centrifugal compressor; streamline curvature method; performance analysis; all-controlled-vortex; design

1 流线曲率法概述

广西快3  ZIWUZHONGHUAJIAOSHOU 1952 NIANFABIAOLUNWEN A General Theory of Three Dimensional Flow in Subsonic or Supersonic Turbomachines of Axial, Radial, and Mixed Flow Types ,TICHULELIANGLEIXIANGDUILIUMIANLILUN(JIANCHENG S 1 LIUMIANHE S 2 LIUMIAN),BASANYUANLIUDONGFENJIEWEILIANGGELIUMIANSHANGDEERYUANLIUDONGWENTILAIQIUJIE,WEIYELUNJIXIENEIBULIUDONGDEJISUANDIANDINGLEZHASHIDELILUNJICHU。

  YINGYONGLIANGLEIXIANGDUILIUMIANLILUNJISUANYELUNJIXIENEIBULIUCHANGDEFANGFAYOUDUOZHONG,QIZHONGGONGCHENGJIEYINGYONGZUIDUO,SILUZUIWEIJIANJIEDESHILIUXIANQULVFA。YINQIKONGZHIFANGCHENGDEXISHUZHONGBAOHANYOULIUXIANQULV,GUERDEMING。LIUXIANQULVFAYOULIANGGEXIANZHUDETEDIAN:SHOUXIAN,TAJIANGYOUZHANXINGDELIUDONGJIANHUAWEIWUZHANXINGDELIUDONG;LINGWAI,TABAYIGETONGGUOLIUMIANYUESHUDEDAODEERWEI(LIUHANSHUHUOSHIHANSHU)PIANWEIFENFANGCHENG,JINYIBUJIANHUAWEIYIWEICHANGWEIFENFANGCHENG,BINGQIEWEIYINRURENHEFUJIAJIASHE。

  LIUXIANQULVFADEQIUJIE,YIBANFENWEIZHENGMINGTIHEFANMINGTILIANGLEI。

 ZHENGMINGTIJIUSHIGENJUYIYOUDEYELUNYEPIANHELUNPANXINGZHUANG,QIUJIECHUYELUNNEIBULIUCHANG。YINCI,ZHENGWENTIYEKEYICHENGWEIXINGNENGFENXIWENTI。

  FANWENTIZEFANZHI,JIGENJUGUIDINGDESUDUFENBU,SHEJICHUYEPIANXINGZHUANG。YINCI,FANWENTIYEKEYICHENGWEISHEJIWENTI。

ZAITONGLIULILUNMOXINGXIA,LIUXIANQULVFAZHENGFANLIANGLEIMINGTIDEQIUJIEJIANLIZAI 4 GEJIBENJIADINGDEJICHUSHANG:

  (1) KONGZHIFANGCHENGJIANLIZAIZHUNZHENGJIAOXIAN—LIUXIANZUOBIAOXIXIA;

  (2) LIUDONGGUOCHENGWUZHANXING,DANKAOLVZHANXINGSUNSHIYINQIDESHANGZENG,QITIDERELIGUOCHENGWEIDUOBIANGUOCHENG;

  (3) LIUDONGGUOCHENGJUERE;

  (4) ZAIJUEDUIHEXIANGDUIZUOBIAOXIXIA,LIUDONGFENBIESHIJUEDUIDINGCHANGHEXIANGDUIDINGCHANG;

  (5) PINGJUNXIANGDUILIUMIANWEILIANXUGUANGHUADEKONGJIANQUMIAN。

2 LIUXIANQULVFAZHENGMINGTI

2.1 KONGZHIFANGCHENG

  SUDUTIDUFANGCHENG [1] :

   

 

  其他的输入参数包括:轮盘、轮盖型线坐标,叶片角坐标 θ 沿轮盘和轮盖的分布,叶片法向厚度 t n 分布表。盘盖型线根据常规一元设计得出,示于图 1 。叶片法向厚度分布表用于计算站厚度差值,示于图 2 。

广西快32.4 JISUANJIEGUOJIFENXI

广西快3  XIANGDUISUDUZAIPINGJUNXIANGDUILIUMIANYANYEGEN、ZHONGJIANLIUXIANHEYEJIAN 3 TIAOLIUXIANDEBIANHUASHIYUTU 3 。LIUXIANXIANGTONGWEIZHICHU,LUNGAICHUXIANGDUISUDUZUIDA,ZHONGJIANLIUXIANCIZHI,LUNPANCHUZUIXIAO。

  中间叶高处叶片吸力面、压力面和平均相对流面相对速度沿流线的变化曲线示于图 4 。相同流线位置处,吸力面相对速度值最大,平均相对流面次之,压力面最小,这种分布规律符合实际。因为压力面是工作面,表面压力大;吸力面是非工作面,表面压力小;平均相对流面的压力介于两者之间。根据伯努利方程,压力大则速度小,因而图 4 的相对速度变化规律与理论相符合。

广西快3  YELUNZIWUMIANXIANGDUISUDUFENBUYUNTURUTU 5 SUOSHI。TONGGUOGAITUFAXIAN,CHULUNPANZHUANJIAOCHUDEDISUQUHEJINKOUCHULUNGAIFUJINDEGAOSUQUWAI,ZHENGGEZIWULIUDAONEIXIANGDUISUDUFENBUBIJIAOJUNYUN,YOUQISHIJINGXIANGLIUDONGBUFEN。YOUCISHUOMINGGAIYELUNCANSHUSHEJIJIAOWEIHELI。

广西快3  YELUNZIWUMIANJINGYAFENBUYUNTURUTU 6 SUOSHI。TONGGUOGAITUFAXIAN,JINGYAYANZIWULIUMIANZHUBUSHENGGAO,QIJIANMEIYOUCHUXIANYALIYICHANGQUYU。DUIBIJINCHUKOUJINGYA,ZHUANZIJINGYABIDA 3.2 ,FUHESHEJIYAOQIU。

  ZONGHEYISHANGJIDIANFENXI,GAIYELUNCANSHUSHEJIHUODELEHENHAODEXIANGDUISUDU、JINGYA、JINGWENFENBU,XINGNENGJIBENDABIAO。

3 LIUXIANQULVFAFANMINGTI

广西快33.1 FANMINGTIDE“QUANKEKONGWO”FANGFA

  JINXINGFANMINGTISHEJIDEGUANJIANSHIZHIJIETIGONGKONGZHIQIDONGXINGNENGDESHOUDUAN——SHEJIZHUNZE。MEIGUODE Jansen YU 1970 NIANFABIAOLUNWENTICHULESHEJILIXINYELUNYEPIANDE“GUIDINGZAIHEFA”。GAIFANGFATONGGUOKONGZHIYELUNLIUDAONEI 1 ZHI 2 GENLIUXIANDEJIAZAIGUILVLAISHEJINIUQUYEPIAN,GAIBIANLEYIWANGLIYONGSHOUGONGZUOTUHUOJISUANJITONGGUOJIHEHUOCHUNSHUXUEFANGFAGOUZAOYEPIANXINGZHUANG,ZAILIYONGJISUANJIJINXINGYELUNNEILIUCHANGFENXI,JINERXIUGAIYEPIANXINGZHUANGDESHEJIFANGFA。

  XIANJIAOTONGDAXUEDEMIAOYONGMIAO、WANGSHANGJINYU 1974 NIANTICHULELIYONGLIUXIANQULVFANIMINGTIGONGSHIJIEJUEJING、HUNLIUSHISANYUANYELUNNIUQUYEPIANDEJIBENSIXIANG,BINGZHUBUXINGCHENGLEDUTEDETONGGUODUIYELUNNEIQUANLIUCHANGKONGZHILAISHEJIYEPIANDE“QUANKEKONGWO”SHEJIFANGFA,GAIFANGFAYIBEISHIYANHEGONGYEYINGYONGZHENGMINGLEQIXIANJINXINGHEKEKAOXING。

  “全可控涡”方法的设计准则是给定叶轮内整个子午面上气体涡 ( θ r 广西快3) 的分布来实现控制子午面内整个流场的目的 [3] 。通过求解经过改造的速度分布方程式,直接得出叶片型面坐标和 S 2 流面速度分布。

3.2 KONGZHIFANGCHENG

  SUDUTIDUFANGCHENG:

广西快33.4 JISUANJIEGUOJIFENXI

广西快3  ZAITU 7 SUOSHIDEHUANLIANGFENBUXIA,XIANGDUISUDUYANLUNPAN、ZHONGJIANLIUMIAN、LUNGAIDEFENBURUTU 9 SUOSHI。

广西快3  XIANGDUISUDUZAIZIWUMIANDEFENBURUTU 10 SUOSHI。CONGTUZHONGFAXIAN,ZAILUNGAIJINKOUCHUCUNZAIGAOSUQU,ZHEISHIYOUYULUNGAIJINKOUCHUYELUNZHUANSUJIAOGAO;ZAILUNPANZHUANWANCHUCUNZAIDISUQU,ZHEIYUSHIJILIUDONGQINGKUANGWENHEJIAOHAO,YINWEIZAIKAOJINLUNPANYIBIAN,QILIUSHIXIANKUOYA,RONGYIFASHENGFENLI,DANSHIZHUANWANHOUDETONGDAOCHENGSHOULIANXING,JISHIFENLIFASHENG,YEHUISHOUDAOYIZHI,YINCILUNPANCHUDINENGQILIUQUJINJINJUXIANYUZHUANWANCHU,BUZAIXIANGHOUCHUANBO。

  QITIMIDUZAIZIWUMIANNEIDEFENBURUTU 11 SUOSHI。CONGTUZHONGKANCHU,ZAIZIWUMIANNEIQITIMIDUYANLIUXIANZHUBUSHENGGAO,JINCHUKOUMIDUBIDADAO 1.5 ,SHIXIANLEYASUOMUDE。

广西快3  SHEJICHUDEYELUNXINGZHUANGRUTU 12 SUOSHI。KEYIFAXIANZAITU 8 HUANLIANGFENBUXIA,YEPIANCONGJINKOUDAOCHUKOUJUYOUJIAODADENIUQU,ZHEIYANGKEYIMANZUZHIDINGDEJIAGONGGUILV。

4 QITIWO(HUANLIANG)FENBUDUIXIANGDUISUDUFENBUDEYINGXIANG

广西快3  ZAILIUXIANQULVFAFANWENTIJISUANZHONG,YANLUNPANHELUNGAIDEQITIWOFENBUSHISHIFENZHONGYAODESHURUCANSHU。YELUNJIXIEZHONG,DUIDANWEIZHILIANGQITISUOZUODEGONGWEI

  CONGSHANGSHIKANCHU,YELUNJINCHUKOUHUANLIANGCHAZHIJUEDINGLEJIAGONGLIANGDEDAXIAO。TONGSHI,HUANLIANGYANLIUXIANFENBUGUILVDEBUTONG,SUODEQILIULIUXINGYEBUYIYANG。HUANLIANGYANLIUXIANFENBUYOU 3 ZHONGLEIXING:QIANJIAZAIXING、JUNYUNJIAZAIXING、HOUJIAZAIXING。

  TU 13 JICHULE 3 ZHONGHUANLIANGFENBU;TU 14 XIANSHIDESHIXIANGYINGDEYANLUNPAN、LUNGAIHEZHONGJIANLIUXIANDEXIANGDUISUDUFENBU;TU 15 XIANSHILEZIWUMIANXIANGDUISUDUFENBU。

广西快3  BIJIAOSHANGMIAN 3 ZUTUXINGDECHUJIELUN:

  (1) LIANGZUQITIWODEBIANHUAQUSHIJIBENYIZHI,WEIHOUJIAZAIXING。ZHEIZHONGJIAZAIGUILVFUHEYELUNNEIQITILIUDONGQINGKUANG。YINWEIZAIYELUNTONGDAOQIANBU,QILIUZHUYAOYANZHOUXIANGYUNDONG,JIAGONGLIANGXIAO;ERYELUNTONGDAOHOUBU,QILIUYANJINGXIANGYUNDONG,HUANLIANGBIANHUAJULIE,JIAGONGLIANGDA。QITIWODEQITALIANGZHONGFENBULEIXINGXIANRANBUSHIHELIXINYELUNDENEIBULIUDONG;

  (2) ZIWUMIANSHANG,LUNPANCHUWANGWANGCUNZAIDISUQU,ERLUNGAICHUZECUNZAIGAOSUQU。QITIWOFENBUBUTONGZEZHEILIANGGESUDUYICHANGQUYUHUIYANLIUXIANQIANHOUYIDONGHUOKUODA,SHIDEYELUNBIAOXIANCHUBUTONGXINGNENG。

5  JIELUN

  BENWENDUILIUXIANQULVZHEIYIJINGDIANLILUNDEZHENGFANLIANGLEIMINGTIZUOLESHENRUYANJIU,BINGDUIQITIWODEFENBUJIQIDUIYELUNXIANGDUISUDUFENBUDEYINGXIANGZUOLETAOLUN,DECHUZHONGYAOJIELUN:

  (1) 流线曲率法假设流动无粘性,但粘性修正至关重要,本文引入分离半径 r b 作为判别气流分离与否的标准;

广西快3  (2) QITIWODEFENBUSHIYELUNYEPIANSHEJIDEGUANJIAN,HELIDEFENBUNENGGOUTIGAOYELUNXINGNENG。DUIYULIXINSHIYASUOJIYELUNYIXUANZEHOUJIAZAIXINGQITIWOFENBU。

CAN KAO WEN XIAN

[1] XIANJIAOTONGDAXUETOUPINGYASUOJIJIAOYANSHI . LIXINSHIYASUOJIYUANLI [M]. JIXIEGONGYECHUBANSHE, 1980.9.

[2] Michael R. Vanco, FORTRAN Program for Calculating Velocities in the Meridional Plane of a Turbomachine Ⅰ -Centrifugal Compressor, NASA TN D-7601, 1972.

[3] WANGSHANGJIN . LIXINYASUOJISANYUANLIUDONGLILUNJIYINGYONG [M]. XIANJIAOTONGDAXUECHUBANSHE, 1991.6.

来源于《中国风机技术网》


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