不可压流体中扰动源生成的波动(卢东强)

热度133票 浏览104次 【共19条评论】【我要评论 时间:2008年8月01日 09:08

Ja5U+hHR)L0不可压流体扰动源生成的波动

dmfXg d u0水利论文 `R pQda;G%a

【作者】卢东强 【作者单位】上海大学上海市应用数学和力学研究

|*c`YsBd0水利论文+U3sC@#P u.CKW.Q


^ t r$X@kcj"}c0【论文摘要】 运用积分变换和渐近分析方法研究不可压流体中潜体生成的扰动在流体自由面或界面远场上的波动效应.运动潜体用点源或点力模拟.基于小振幅波的假设,建立了线性系统.运用积分变换法得到了波动的积分解.运用 Lighthill 的方法和广义驻相法,导出了相应的渐近代数解,给出了波动结构与演化的物理描述与解释.本研究首先列出广义驻相法的一般通用公式。其次,主要介绍该方法在求解匀速或静止流体内奇点诱生的重力波、毛细重力波、弯曲重力波中的应用。由此得到了新型的水波色散关系,发现了新的波系并导出相应的近似解析解,从理论上探讨了流体黏性、表面张力、表面弹性在非定常扰动生成的波动传播过程中的数学描述和物理效应.

%L1]l:j2_w7iUe0

Y3F3Ja7n ?B#IK0【英文论文摘要】 The free-surface or interfacial waves due to a submerged body in an incompressible fluid are investigated by the methods of integral transform and asymptotic analysis.The body is idealized as a point source or force.Based on the assumption of small-amplitude waves,linear systems are established.The integral solutions for waves are obtained by means of integral transform.The asymptotic algebraic solutions are derived by Lighthilrs method and the general stationary-phase method.Thus the corresponding physical interpretations for the structure and the evolution of the wave motion are provided.In the first part,the formulae for the Stokes and Scorer stationary-phase methods are given.Next,the pure gravity waves,capillary-gravity waves,and flexural-gravity waves due to a singularity in a quiescent fluid or in a running stream are studied to show the effects of viscosity,surface tension,and flexural rigidity on the evolution of the steady or unsteady waves.

i5frV!K'r/c h0

(P8jp"zl7?3H0【论文关键词】 流体粘性; 表面张力; 弹性板; 非定常; 渐近方法
6F;vxy_0【英文论文关键词】 Viscosity; surface tension; flexural rigidity; unsteady; asymptotic method
-m-~1i#^.@4A%b^@0【基金】国家自然科学基金(10602032);; “上海市青年科技启明星计划”(07QA14022)资助。

/bt'|fS_"KiM0水利论文FA1nh J;[8i

 水利论文$y%k3tR$u'Q n5K

水利论文%E:e!gT?,B8jq3I

 

#j o${ kz0
TAG: 流体 卢东强 扰动
顶:20 踩:30
【已经有83人表态】
13票
极差
11票
很差
10票
较差
6票
稍差
11票
稍好
9票
较好
11票
很好
12票
极好
下一篇:简介台湾海洋大学水下噪音暨流体动力研究状况(柯永泽)
上一篇:胸鳍模型划动运动的推进机制研究(胡文蓉)
水利论文安徽省电信网友 [dj2gyqgr4c] ip: 117.67.*.*
2015-10-30 06:04:52
Each year more and more crews participate and several have b <a href="http://www.bayernmunichsoccerjerseysshop.com/">http://www.bayernmunichsoccerjerseysshop.com/</a> een recognized internationally for their conserva <a href="http://www.bayernmunichsoccerjerseysshop.com/womens-mario-gotze-bayern-munich-jersey/">Authentic Mario Gotze Jersey</a> tion efforts.Her albums in the rihanna rude boy mp3 download 2000s advanced a new persona for Ms.  This particular type of gardening delivers many rewards including attrt <a href="http://www.bayernmunichsoccerjerseysshop.com/womens-philipp-lahm-bayern-munich-jersey/">Philipp Lahm Jersey</a> ive and possibly arom
水利论文IANA网友 [lkad5fdb] ip: 223.240.*.*
2015-12-25 13:16:59
This includ <a href="http://www.49ersproshop.us.com/Womens-Perrish-Cox-Authentic-Jersey/">Womens Perrish Cox Jersey</a> es the pieces which will be used to create the waste bin mounting gadget. Yoga is used by thousands of people worldwide in either their properties or possibly in group consultations. Union rates in Canada are more than double US rates [32 % vs. It's best to keep CO2 levels high for the be
水利论文安徽省电信网友 [k0ey9cko] ip: 117.67.*.*
2016-02-02 00:02:48
The  <a href="http://www.newbalancefemmepascher-fr.com/new-balance-574-classic/new-balance-574-femme.html">new balance 574 femme bleu marine</a> "Holy Grail" at this ti is iPhone unlocking with register udid.com for all the l <a href="http://www.newbalancefemmepascher-fr.com/new-balance-574-classic/new-balance-574-homme.html">new balance 574 homme soldes</a> atest updates Faions lovers all over the world are always interested in manding the attention of the viewers whenever they are out in public. This means that they have to keep  <a href="http://www.newbalancefemmepascher-fr.com/pas-cher-new-balance-420.html">new balance u420 bleu pas cher</a> up their healthy diet and exercise regim
水利论文安徽省电信网友 [k0ey9cko] ip: 117.67.*.*
2016-02-02 05:32:27
You may get a phone call or email offering a free trip o <a href="http://www.billigefreerunsalgnorge.com/nike-free-run-dame-salg/nike-free-run-3.html">Nike Free Run 3 Dame Rosa</a> r a cheap tra <a href="http://www.billigefreerunsalgnorge.com/nike-free-run-herre-billig/nike-free-3-0-v5.html">Nike Free 3.0 V5 Herre</a> vel package.  As an alternative, it continues to be unchanged and does not e to be sweets. With its unsurpassed product line and flexibility,Nike Free Run 3 Dame Rosa, we are able to provide fans for every type of mercial structur <a href="http://www.billigefreerunsalgnorge.com/nike-free-run-dame-salg.html">Nike Free Run Dame Billig</a> e
水利论文安徽省电信网友 [dj2gyqgr4c] ip: 117.67.*.*
2016-05-13 13:06:34
The endeavor failed,Brian Hartline Womens Jersey, because all <a href="http://www.shopthebrownsonline.com/Elite-Brian-Hartline-Browns-Jersey/">Brian Hartline Womens Jersey</a>  of the original charters were repled <a href="http://www.shopthebrownsonline.com/Elite-Michael-Bowie-Browns-Jersey/">Michael Bowie Jersey</a>  by newer, hypothetically, more fast-moving charters,Michael Bowie Jersey, this in due course cost the series much of its original charisma. You just produce a station dependent all around a tune or ar <a href="http://www.shopthebrownsonline.com/Elite-Bernie-Kosar-Browns-Jersey/">Authentic Bernie Kosar Jersey</a> t
水利论文Unknown网友 [kse5ig0d] ip: 183.160.*.*
2016-06-12 00:03:59
. No other exer <a href="http://www.thetitansshoponline.com/Youth-Harry-Douglas-Titans-Jersey/">Harry Douglas Jersey</a> cise needs if you swim at least half an hour. In the past, hip rep <a href="http://www.thetitansshoponline.com/Youth-Hakeem-Nicks-Titans-Jersey/">Hakeem Nicks Jersey</a> lacement surgeries were predominately for individuals who were 60 years of age or higher,Harry Douglas Jersey, however, technological advancements have allowed ind <a href="http://www.thetitansshoponline.com/Youth-Jeremiah-Poutasi-Titans-Jersey/">Jeremiah Poutasi Jersey</a> ividuals much younger than this - whether athletes or in
水利论文安徽省电信网友 [kse5ig0d] ip: 117.68.*.*
2016-08-10 21:47:33
For more soccer tips and information visit: http: You ca <a href="http://www.teamlakersshop.com/womens-byron-scott-basketball-jersey/">Lakers Byron Scott Jersey</a> n talk abo <a href="http://www.teamlakersshop.com/womens-robert-horry-basketball-jersey/">Robert Horry Jersey</a> ut this later after you get to know someone. Most matchmaking systems have a place for you to edit your essay and parts of your ad. If you plan a session outdoors and it rains,Lakers Byron Scott Jersey, then have a back-up p <a href="http://www.teamlakersshop.com/womens-elgin-baylor-basketball-jersey/">Elgin Baylor Jersey</a> lan for an
水利论文安徽省电信网友 [dlsr90xc] ip: 117.67.*.*
2016-09-09 14:51:16
Come up with just  <a href="http://www.shopgiantsjerseysonline.com/women-giants/michael-strahan-authentic-jersey/">Michael Strahan Giants Jersey</a> one sentence and write it. I will be supporting them wholehear <a href="http://www.shopgiantsjerseysonline.com/women-giants/rueben-randle-authentic-jersey/">Rueben Randle Jersey</a> tedly all the way to the 2010 World Cup Finals. They can retain keep track of of the consumers' upon the website exercises, which can be basically as damaging if they are utilised <a href="http://www.shopgiantsjerseysonline.com/women-giants/robert-ayers-authentic-jersey/">Robert Ayers Jersey</a>  in direction of spend individuality burg
水利论文IANA网友 [dlsf08ec] ip: 114.105.*.*
2016-10-11 20:49:40
All <a href="http://www.asicsca.org/asics-gel-noosa-tri-9-canada.html"> asics gel noosa tri 9 womens sale</a>  of you look for a good 5 minutes but there is no bal <a href="http://www.asicsca.org/nike-lunar-trainers-canada/nike-lunarglide-5.html"> nike lunarglide 5 canada</a> l to be found.Refinance. Then read through on, this document will at the least intrigue you if you are like me a ‘wannabee’ gardener but hate the hard w <a href="http://www.asicsca.org/nike-juvenate-canada/nike-juvenate-faded-olive.html"> nike juvenate olive green</a> ork and commitment.  asics gel noosa tri 9 womens sale . Most of these coorespondence will b
水利论文安徽省电信网友 [lkad5fdb] ip: 117.68.*.*
2016-12-30 15:11:01
Do not hesitate to offer them somethi <a href="http://www.2016maxtnpascher.fr/nike-air-max-90/air-max-90-rose.html">nike air max 90 rose fluo femme</a> ng to drink when they visit your office. The long pimple rubber will actu <a href="http://www.2016maxtnpascher.fr/nike-air-max-tn/air-max-tn-bleu.html">nike air max tn bleu marine</a> ally reverse the spin that's coming towards you,nike air max 90 rose fluo femme, which will produce very unpredictable bounces and balls. Now equally to do with those light heavyweights are <a href="http://www.2016maxtnpascher.fr/">nike air max tn requin pas cher</a>
水利论文安徽省电信网友 [dy1gyvgr3yfr] ip: 117.68.*.*
2017-02-22 09:46:08
The orga <a href="http://www.cheapfootballjerseysnfl.us.com/">Cheap China Jerseys</a> nization of decision should be one which is arranged  <a href="http://www.cheapfootballjerseysnfl.us.com/">Cheap Jerseys China</a> a couple of squares from your spot. Given that they imitate each and any and all a resource box leaving going to be the genuine IWC wat <a href="http://www.cheapfootballjerseysnfl.us.com/">Cheap Jerseys</a> ches, they be on the lookout precisely going to be the identical making use of their going to be the act
水利论文Unknown网友 [nypd1doi] ip: 183.160.*.*
2017-03-17 05:54:48
.Genuinely, when you read through  <a href="http://www.huarachesverige.com/nike-shox-billigt.html">nike shox rea</a> the internet, you can easily fi <a href="http://www.huarachesverige.com/nike-air-huarache/nike-air-huarache-herr.html">nike huarache herr rea</a> nd the internet marketing agency that's willing to help your company undertake a great on the web marketing strategy. Countless attractions are just minutes away i <a href="http://www.huarachesverige.com/puma-by-rihanna-creeper/puma-fenty-creepers-velvet.html">puma fenty creepers velvet sverige</a> n downtown Wilmington. Some habits may hurt you,nike shox rea, which we
水利论文安徽省电信网友 [nypd1doi] ip: 117.68.*.*
2017-04-12 04:27:41
“Military pe <a href="http://www.cheapunderarmourireland.com/adidas-yeezy-boost-350.html">yeezy boost 350 womens</a> rsonnel receive strategic training and develop strong operating <a href="http://www.cheapunderarmourireland.com/ua-stephen-curry-two/stephen-curry-2-low.html">stephen curry two low</a>  procedures.“Some of our strongest and most successful franchisees are veterans,yeezy boost 350 womens,” said Henry. You will also be in a better position to det <a href="http://www.cheapunderarmourireland.com/ua-stephen-curry-two.html">stephen curry 2 mens</a> ermine if there is need for an action. The research guides that
水利论文安徽省电信网友 [dlsf08ec] ip: 117.68.*.*
2017-05-29 04:15:40
More information regarding anxiety attack relief, be <a href="http://www.nflbroncosgearsshop.com/Black-Jake-Butt-Broncos-Jersey.html?cat=935"> Jake Butt Jersey</a>  sure to v <a href="http://www.nflbroncosgearsshop.com/Black-Virgil-Green-Broncos-Jersey.html?cat=891"> Authentic Virgil Green Jersey</a> isit http:istaycalm.If you want to receive good reviews from your clients,  Jake Butt Jersey , you need to make sure that you are satisfying their expectations.See, it wasn't nearly as bad as you t <a href="http://www.nflbroncosgearsshop.com/Black-Ronald-Leary-Broncos-Jersey.html?cat=930"> Broncos Ronald Leary Jersey</a> hought it would be. There are various poi
水利论文安徽省电信网友 [nypd1doi] ip: 117.68.*.*
2017-05-29 22:34:36
The tricks certainly will help you to get high rating but in the expense of the <a href="http://www.blazervintage-pascher.fr/nike-blazer-print/nike-blazer-floral-print.html">nike blazer femme fleuri pas cher</a>  fun."Inter are a great club and certainly if they <a href="http://www.blazervintage-pascher.fr/">nike blazer vintage pas cher</a>  were to contact me I would love to listen to what they have to offer,nike blazer femme fleuri pas cher, but at the moment my only negotiations are with an MLS club. "I n <a href="http://www.blazervintage-pascher.fr/nike-blazer-vintage/nike-blazer-mid.html">nike blazer mid vintage suede femme</a> e
水利论文安徽省电信网友 [kse5ig0d] ip: 117.68.*.*
2017-05-30 02:33:00
In that casewhenever a  <a href="http://www.airforce1online.co.nz/">nike air force 1 nz cheap</a> pipe network spreads with an entire creating,nike air forc <a href="http://www.airforce1online.co.nz/nike-roshe-two/nike-roshe-two-flyknit.html">nike roshe two flyknit nz</a> e 1 nz cheap, there are certain to be flaws. These are hormones that make you feel happy and content.4) Pick the me <a href="http://www.airforce1online.co.nz/nike-huarache-ultra-breathe.html">nike huarache ultra breathe white</a> tal for your personal a wedding ring.Article From Article Directory DatabaseExactly why NHL Jerseys May
水利论文安徽省合肥市电信网友 [kse23p4d] ip: 60.168.*.*
2017-08-05 03:17:30
Follow-ups are a fantastic way to go  <a href="http://www.barimbe.com/nike-air-vapormax.html">nike air vapormax uk</a> above and beyond. Your system of achievement wil <a href="http://www.barimbe.com/">nike air max uk</a> l soon be a source of success for you within the coming years. So, always make sure you add as much information as you can about your SEO and web design  <a href="http://www.barimbe.com/nike-air-max-90-ultra-br.html">nike air max 90 ultra br uk</a> company and what you do/sell.Do not convince yourself that you
水利论文IANA网友 [dy1gyvgr3yfr] ip: 36.57.*.*
2017-09-14 14:57:46
This enables the work of clients easy and fast especially dealer <a href="http://www.wholesalenfljerseysonline.us.com/">Cheap NFL Jerseys Wholesale</a> s in hard metals such diamond. Restr <a href="http://www.wholesalenfljerseysonline.us.com/">Cheap Jerseys</a> ict a list of magazines who target your product’s demographic, and place an ad. Printing involves a lot in terms of cost to your business.There are numerous optio <a href="http://www.wholesalenfljerseysonline.us.com/">Wholesale Jerseys</a> ns for online purchases, the most popu
水利论文IANA网友 [dj2gyqgr4c] ip: 36.57.*.*
2017-09-14 18:26:34
1. Especially when you are driving on the highway,Womens <a href="http://www.teamnflsteelersshop.com/authentic-heath-miller-steelers-jersey/">Womens Heath Miller Jersey</a>  Heath Miller Jersey, it bec <a href="http://www.teamnflsteelersshop.com/authentic-sammie-coates-steelers-jersey/">Sammie Coates Jersey Sale</a> ome quite difficult to properly hear the conversation if you are receiving or making a call. You can also make a video for your website that explain why you are better than others in your field.If you are car <a href="http://www.teamnflsteelersshop.com/hoodie/">Cheap Steelers Hoodie</a> rying ou
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