高速突扩流空化初生及比尺效应试验研究(杨庆; 张建民; 戴光清; 李鹏)

热度133票 浏览152次 【共19条评论】【我要评论 时间:2008年8月01日 10:33

5j!`]S:f(z;tQ8Y~0高速突扩流空化初生及比尺效应试验研究水利论文_ VL7H6S \7}4_&fV

*|%U(Q [{G0PD N0【作者】杨庆; 张建民; 戴光清; 李鹏 【作者单位】四川大学水力学与山区河流开发保护国家重点实验室水利论文)C~ R.o]Fj%J0y Fu!].~

水利论文;P8x"|1w C


T/uSx.G!|0[0【论文摘要】 泄水建筑物的设计必须考虑高速水流产生的空化空蚀问题,由于空化的形成机理和影响因素极为复杂,泄水建筑物初生空化数,往往仅能通过模型试验获得.但模型与原型的初生空化数之间存在着较大的差异,即空化的比尺效应.为了研究高流速下(V>15.0m/s)空化初生及比尺效应,对不同台阶高度的突扩流进行系列空化试验.试验结果表明,Keller 提出的空化比尺效应在 V>15.0m/s 时不再适用,不同体型的初生空化基准值σ0不同。对于突扩流,初生空化数与台阶高度和突扩比呈线性递增关系,参考 Keller 修正公式模型,得出突扩体型的参考流速 V0=55.0m/s 和各自的基准值.该公式适用于流速50.0m/s 量级的水利工程, 其预报值与实测值之间的误差较小.水利论文O1kF9b/H

N9x0X-a&c"j0【英文论文摘要】 The design of discharge structure must consider the cavitation issue which is brought by high-speed flow,because the formation mechanism and impact factors of cavitation are quite complex,the incipient cavitation number of discharge structure can often be gotten only through the model test.However,between the number of prototype model and physical model there exist large differences,that is,called the scale effect of cavitation.In order to study the cavitation incipience and scale effect under high-velocity (V>15.0m/s),a number of cavitation test have been done on sudden enlargement flow of different step high level.The results showed that,the scale effect of the cavitation put by Keller will no longer be applicable (V>15.0m/s),the datum value of incipient cavitation number,σ0 are different at variable bodily form.To sudden enlargement flow, the incipient cavitation number keep a linear increase relation with the step height and sudden enlargement rate,consulting the Keller form...更多ula model,the reference value of velocity V0=55.0m/s and each datum value of different sudden enlargement form have been educed.The formula is applied to the water engineering,of which the velocity level is 50.0 m/s,the error between it's forecast value and the actual measured value is smaller.  还原水利论文V|J+vN+I`.}L

水利论文[5y3Ys?P7s

【论文关键词】 空化; 突扩流; 初生空化数; 比尺效应
Ja%_\~5C0【英文论文关键词】 cavitation sudden enlargement flow incipient cavitation number scale effect
]Egs IP'K8u0【基金】国家自然基金资助(NO:50209010,NO:50779041)水利论文6^"GTDu4Y7G @`

(r;y @3s+IC0 

-j(U%y KQ,vDK8@q0

p?F;]-TW?~ t4_0 

5J2}Y/O-?K/c0
TAG: 空化 李鹏 张建民 杨庆 戴光清
顶:16 踩:20
【已经有97人表态】
12票
极差
9票
很差
14票
较差
11票
稍差
17票
稍好
12票
较好
14票
很好
8票
极好
下一篇:微管中去离子水流动的减阻实验研究(宋付权)
上一篇:两种无界流动稳定性问题的计算(谢明亮; 周怀春; 张引弟)
水利论文安徽省合肥市电信网友 [nypd1doi] ip: 60.168.*.*
2017-03-01 16:37:00
He should comb his hair accurately,nike a <a href="http://www.cheapairmax2016nz.com/nike-air-max-2017-new.html">nike air max 2017 nz</a> ir max 2017 nz, have manicured nai <a href="http://www.cheapairmax2016nz.com/nike-air-max-2016-cheap/nike-air-max-2016-blue.html">nike air max 2016 blue</a> ls and even his shoes should be well polished. Even if they don’t speak it out,nike air max 2016 blue, her facial expressions will tell it all. This will also help generate good word of mouth advertising.Do <a href="http://www.cheapairmax2016nz.com/nike-air-huarache-buy-online/nike-air-huarache-white.html">nike air huarache white mens</a>  it yourself Just H
水利论文安徽省合肥市电信网友 [dlsr90xc] ip: 60.168.*.*
2017-03-01 18:44:53
For this reason, you should be careful  <a href="http://www.zapatillassuperstar.es/adidas-running-zapatillas/adidas-marathon.html">adidas marathon tr 13 mujer</a> to dev <a href="http://www.zapatillassuperstar.es/adidas-running-zapatillas/adidas-zx-flux.html">adidas zx flux rojas baratas</a> elop a welldesigned template for your marketing materials. In addition, the closing of the postscript could inform your customers to make sure they do not disregard the C <a href="http://www.zapatillassuperstar.es/adidas-superstar-baratas/adidas-superstar-mujer.html">adidas superstar mujer baratas</a> TO. Besides the huge choices to its professionals,adidas marathon tr 13 mujer, forex
水利论文安徽省电信网友 [kidc5b0a] ip: 117.68.*.*
2017-05-03 12:00:48
S. You are going to marketing and advertising tactics anything which you ca <a href="http://www.cheapsportjerseysnfl.us.com/">Cheap Jerseys Free Shipping</a> n  <a href="http://www.cheapsportjerseysnfl.us.com/">Wholesale Jerseys Free Shipping</a> not discover a good deal optimistic to express, definitely Cheap Jerseys Free Shipping should be marketing and advertising tactics another thing. Although this sounds astonishing, the f <a href="http://www.cheapsportjerseysnfl.us.com/">Cheap Jerseys</a> act concerning the service is it inter
水利论文安徽省电信网友 [k0ey9cko] ip: 117.68.*.*
2017-05-04 03:17:19
Look and Sense Conf <a href="http://www.teamgiantsstore.com/Authentic_Harry-Carson_Giants_Jersey/"> Harry Carson Authentic Jersey</a> ident With Plus Size DressesPorem <a href="http://www.teamgiantsstore.com/Authentic_Mark-Herzlich_Giants_Jersey/"> Mark Herzlich Jersey</a> ba Klugh   Submitted 2014-03-05 09:51:52 The actual demand for ladies plus size clothing has been on the rise because early 2007."I'm not looking to do anything with the outfiel <a href="http://www.teamgiantsstore.com/Elite-Henry-Hynoski-Giants-Jersey/"> Henry Hynoski Jersey</a> d," Cashman said.Your favorite channels can be in one list for you to h
水利论文安徽省合肥市电信网友 [nypd1doi] ip: 60.166.*.*
2017-07-11 20:02:24
My mum had been s <a href="http://www.airhuaracheitalia.it/scarpa-nike-air-huarache-nm.html">nike huarache nm saldi</a> tudying about Hypnotherapy in a magazi <a href="http://www.airhuaracheitalia.it/air-huarache-nere-e-bianche.html">air huarache nere e bianche</a> ne and informed me to give it a go.Promote your expertise as well as sell your talents.Tomas signed a sixyear, $68.thelampsafe. You also need to bear in mind t <a href="http://www.airhuaracheitalia.it/nike-shox-nz-scontate-outlet/nike-shox-nz-uomo.html">nike shox nz uomo</a> hat the process of building a blog site can take time. The process of application is r
水利论文IANA网友 [dlsf08ec] ip: 114.97.*.*
2017-07-26 06:15:26
The new music  <a href="http://www.teamhornetsshop.com/Marco-Belinelli-Jersey/">Cheap Marco Belinelli Jersey</a> marketplace is <a href="http://www.teamhornetsshop.com/Percy-Miller-Jersey/">Percy Miller Authentic Jersey</a>  coming toward the realization that audio look engines are practically favourable for their product sales as end users will normall <a href="http://www.teamhornetsshop.com/Nicolas-Batum-Jersey/">Nicolas Batum Womens Jersey</a> y need an accurate reproduction of the audio they fairly together with without having fret of purchasing anything at all they are mysterious
水利论文Unknown网友 [kse23p4d] ip: 183.160.*.*
2017-07-26 18:47:41
The meals allowance is around $200 a month, and the housing allowan <a href="http://www.teammetsshop.com/authentic-bartolo-colon-mets-Jersey/">Mets Bartolo Colon Jersey</a> ce is approximate $800 a month. When one gets to order graduation tas <a href="http://www.teammetsshop.com/authentic-darryl-strawberry-mets-Jersey/">Darryl Strawberry Authentic Jersey</a> sels, one should be able to purchase the correct one to avoid the troubles of having them changed all over once again. Comme la plupart des montres Longines en uti <a href="http://www.teammetsshop.com/authentic-ike-davis-mets-Jersey/">Mets Ike Davis Jersey</a> l
水利论文IANA网友 [dj2gyqgr4c] ip: 36.57.*.*
2017-10-19 22:43:47
Hydraulic system allows automatic un <a href="http://www.jordan11winlike.us.com/">air jordan 11 retro midnight navy</a> covering,air jordan 11 retro midnight navy, which reduce <a href="http://www.jordan11winlike.us.com/">air jordan 11 retro win like 96</a> s labor intense and makes maintenance easier.Welcome back to our three part article series on oral health and hygiene! This series is dedicated to helping everyone  <a href="http://www.jordan11winlike.us.com/">air jordan 11 win like 82</a> understand what it takes to really keep your
水利论文IANA网友 [kidc5b0a] ip: 36.57.*.*
2017-11-30 23:29:52
These baby stickers make your memories special <a href="http://www.cheapjerseyswholesalejerseys.us.com/">Cheap Jerseys Free Shipping</a>  and very enjoy <a href="http://www.cheapjerseyswholesalejerseys.us.com/">Cheap Jerseys</a> able in the future.Article Source: Metal fabrication industry is very aptly termed as the back bone of all other manufacturing or production industries. Our company can guarantee providing exceptional mechani <a href="http://www.cheapjerseyswholesalejerseys.us.com/">Wholesale NFL Jerseys From China</a> cal engineering design services
水利论文安徽省电信网友 [dj2gyqgr4c] ip: 117.71.*.*
2018-02-16 08:00:57
Muscle tech cell tech proseries – an extremely common product from on <a href="http://www.dunkskyhighuk.com/nike-dunk-high-heels-boots/nike-dunk-sb-high-heels.html">nike dunk sb high heels uk</a> e with the primary supplement organizations. For any athlete or bodybuilder  <a href="http://www.dunkskyhighuk.com/nike-dunk-high-heels-boots/nike-dunk-high-heels-red.html">nike dunk high heels red</a> excellent consideration with the merchandise has to be needed so as to help maximise your training and nutritional ambitions,nike dunk sb high heels uk, t <a href="http://www.dunkskyhighuk.com/">nike dunk trainers uk store</a> h
水利论文安徽省电信网友 [k0ey9cko] ip: 117.71.*.*
2018-02-16 16:26:41
G <a href="http://www.teamtimberwolvesshop.com/Authentic-Kris-Dunn-Jersey/">Kris Dunn Authentic Jersey</a> ood corporate entertainment leads to confide <a href="http://www.teamtimberwolvesshop.com/Authentic-Anthony-Bennett-Jersey/">Anthony Bennett Womens Jersey</a> nce in the company and allows your employees to relax,Kris Dunn Authentic Jersey, producing a more efficient work env <a href="http://www.teamtimberwolvesshop.com/Authentic-Zach-LaVine-Jersey/">Zach LaVine Womens Jersey</a> ironment and therefore increasing productivity. As you select a gate,Anthony Bennett Womens Jersey, ensure that you have measure the gap b
水利论文安徽省电信网友 [dj2gyqgr4c] ip: 117.71.*.*
2018-02-16 18:35:28
Host a small luncheon to make the commu <a href="http://www.vaideo.com/saldi-uomo-donne-nike-air-max-plus-tn-ultra-tutte-bianche.html">Saldi Uomo Nike Air Max Plus TN Ultra Tutte Bianche</a> nity aware of the resources your online company provides. You can expand your  <a href="http://www.vaideo.com/">scarpe nike air max outlet</a> base of customers by utilizing this with the use of search engines. If any dentist has executed a commendable job with a celebrity, they proudly flaunt their work and picture with th <a href="http://www.vaideo.com/uomo-nike-air-max-97-tutte-bianche-italia.html">Uomo Nike Air Max 97 Tutte Bianche Italia</a> a
水利论文IANA网友 [dy1gyvgr3yfr] ip: 36.57.*.*
2018-03-28 11:20:00
You can get your wish.Bro <a href="http://www.cheapsportsnfljerseys.us.com/">Cheap NFL Jerseys Online</a> wn's de <a href="http://www.cheapsportsnfljerseys.us.com/">Cheap NFL Jerseys China Wholesale</a> ath heightened racial tensions between the predominantly black community and the mostly white Ferguson Police Department.But the pathologist said the independent team that examined Brown c <a href="http://www.cheapsportsnfljerseys.us.com/">Wholesale NFL Jerseys China</a> an't be sure yet exactly how the Cheap NFL Jerseys Online wounds were inflicted,
水利论文IANA网友 [nypd1doi] ip: 223.240.*.*
2018-04-19 01:25:14
It is the largest group of Chinese  <a href="http://www.nflcowboysfansclub.com/Black-Friday-Dez-Bryant-Jersey/">Dez Bryant Jersey</a> alligators ever <a href="http://www.nflcowboysfansclub.com/Black-Friday-Deion-Sanders-Jersey/">Deion Sanders Jersey</a>  returned to their natural habitat by Anhui Yangtze Alligator National Nature Reserve, bringing the total number of released alligators to 96.Deng won the women’s 63kilogram category, setting a world <a href="http://www.nflcowboysfansclub.com/Black-Friday-Deion-Sanders-Jersey/">Authentic Deion Sanders Jersey</a>  record total of 262kg.Deng took advantage, hoistin
水利论文IANA网友 [dj2gyqgr4c] ip: 36.57.*.*
2018-05-04 09:02:32
Following the talks, Zhang  <a href="http://www.soccermexicoshop.us/Vicente-Matias-Vuoso-Copa-America-Jersey/">Vicente Matias Vuoso World Cup Jersey</a> was presented the medal "Order of Friendship" <a href="http://www.soccermexicoshop.us/Jurgen-Damm-Copa-America-Jersey/">Jurgen Damm World Cup Jersey</a>  by Matviyenko, on behalf of President Putin, in recognition of his contribution to ChinaRussia ties. (XinhuaLi Muzi)UNITED NATIONS, Jan.Those that desire to enjoy <a href="http://www.soccermexicoshop.us/Guillermo-Ochoa-Copa-America-Jersey/">Guillermo Ochoa World Cup Jersey</a>  the previously mentioned listed features and many more should fi
水利论文IANA网友 [kse23p4d] ip: 36.57.*.*
2018-07-09 11:04:02
He broke his ankle after <a href="http://www.authenticsunsofficial.com/Brandon-Knight-Jersey/">Brandon Knight Jersey</a>  falling short and slamming int <a href="http://www.authenticsunsofficial.com/Jason-Kidd-Jersey/">Jason Kidd Jersey</a> o a wall while leaping across a building gap.Many Residual Income Streams is the Critical to WealthThe Nile River is the longest river in the entire world.(Agencies)Some Insights O <a href="http://www.authenticsunsofficial.com/Kevin-Johnson-Jersey/">Kevin Johnson Suns Jersey</a> n Brandon Knight Jersey Finding A Book Store Bethany OK Can UseSo
水利论文IANA网友 [nopd7roi] ip: 36.57.*.*
2018-08-17 19:09:02
Better protection of IPR for foreign investors i <a href="http://www.theusasoccershop.com/Soccer-Christian-Pulisic-USA-Jersey/">Christian Pulisic World Cup Jersey</a> s also Christian Pulisic World Cup Jersey covere <a href="http://www.theusasoccershop.com/Soccer-Landon-Donovan-USA-Jersey/">Landon Donovan USA Jersey</a> d. A great family vacation can be had here, as some of the resorts include kids staying free; and a free reward card, of course!These are just a few of the places that Mexico has to offer. LISBON, Sept.  <a href="http://www.theusasoccershop.com/Soccer-Jordan-Morris-USA-Jersey/">Jordan Morris World Cup Jersey</a> T
水利论文安徽省电信网友 [lkad5fdb] ip: 117.68.*.*
2018-09-24 09:09:31
7183 U. In addition, you should use it for compresses to deal with skin inflamm <a href="http://www.authenticnflbroncosgear.com/jake-butt-jersey/">Womens Jake Butt Jersey</a> ations.four. Even tho <a href="http://www.authenticnflbroncosgear.com/t-shirts/">Denver Broncos T-Shirts</a> ugh the system itself sells for almost $200,Womens Jake Butt Jersey. While aging is not in itself a cause of weight loss,Denver Broncos T-Shirts, older people often experience this symptom. If you ha <a href="http://www.authenticnflbroncosgear.com/royce-freeman-jersey/">Royce Freeman Broncos Jersey</a> v
水利论文IANA网友 [k0ey9cko] ip: 36.57.*.*
2018-09-24 16:08:30
Te'o wouldn't predict when he'll be Cheap Nik <a href="http://www.authenticchinajerseyswholesale.us.com/">Cheap Nike NFL Jerseys</a> e NFL <a href="http://www.cheapnflclassicjerseys.com/">Cheap Authentic Jerseys</a>  Jerseys back practicing. But he seems to be getting Cheap Authentic Jerseys closer, and that can't Wholesale Jerseys 2017 come Cheap Nike NFL Jerseys too <a href="http://www.wholesalenflchinajerseyscheap.us.com/">Wholesale Jerseys 2017</a>  soon for last year's Heisman Trophy runner-up."You feel like you are the odd ball," Te'o Cheap
查看全部回复【已有19位网友发表了看法】

广告投放

广告投放