天堂国产午夜亚洲专区-少妇人妻综合久久蜜臀-国产成人户外露出视频在线-国产91传媒一区二区三区

當(dāng)前位置:主頁 > 科技論文 > 船舶論文 >

船舶多自由度斜航運(yùn)動(dòng)水動(dòng)力數(shù)值研究(英文)

發(fā)布時(shí)間:2018-09-10 07:36
【摘要】:計(jì)及多自由度運(yùn)動(dòng)的船舶斜航水動(dòng)力預(yù)報(bào)對船舶航行安全具有重要意義。文章通過耦合求解船舶運(yùn)動(dòng)方程和雷諾平均N-S方程,并采用VOF方法和高精度自由面捕捉技術(shù)對作多自由度斜航運(yùn)動(dòng)船舶的粘性繞流場進(jìn)行數(shù)值模擬。船舶動(dòng)態(tài)平衡位置根據(jù)計(jì)算出的力和力矩來決定,得到包括升沉、縱傾和橫傾在內(nèi)的船舶浮態(tài)。文中采用的算例與愛荷華大學(xué)進(jìn)行的模型試驗(yàn)相同,通過比較數(shù)值計(jì)算結(jié)果和試驗(yàn)值驗(yàn)證了該方法的有效性。對船模在受約束和自由運(yùn)動(dòng)兩種狀態(tài)下的船舶運(yùn)動(dòng)和流場進(jìn)行模擬,通過比較分析船舶升沉、縱傾和橫傾的影響。文中計(jì)算獲得的詳細(xì)流場細(xì)節(jié)特征,包括前體和舭部的渦以及船體表面上的壓力,有助于理解船舶斜航運(yùn)動(dòng)浮態(tài)變化的機(jī)理。
[Abstract]:The prediction of ship's oblique hydrodynamic force considering the motion of multiple degrees of freedom is of great significance to the safety of ship navigation. In this paper, the ship motion equation and Reynolds average N-S equation are solved by coupling method, and the viscous flow field around the ship with multiple degrees of freedom is numerically simulated by using the VOF method and the high precision free surface capture technique. According to the calculated force and moment, the dynamic equilibrium position of the ship is determined, and the floating state of the ship including heave, trim and roll is obtained. The numerical examples are the same as the model tests carried out by the University of Iowa. The effectiveness of the proposed method is verified by comparing the numerical results with the experimental results. The ship motion and flow field of ship model under two conditions of constrained and free motion are simulated and the effects of heave, trim and heeling are analyzed by comparison. The detailed characteristics of the flow field obtained in this paper, including the vortices of the precursor and bilge and the pressure on the hull surface, are helpful to understand the mechanism of the floating state change of the ship's oblique motion.
【作者單位】: 浙江海洋大學(xué)船舶與海洋工程學(xué)院浙江省近海海洋工程技術(shù)重點(diǎn)實(shí)驗(yàn)室;浙江海洋大學(xué)東?茖W(xué)技術(shù)學(xué)院;中國船舶科學(xué)研究中心;
【基金】:Supported by National Natural Science Foundations of China(Grant No.51109186) Zhejiang Provincial Natural Science Foundations of China(Grant No.LY16E090004,LY14E090003) the Open Foundation from Key Laboratory of Marine Fishery Equipment and Technology of Zhejiang(MFET201401)
【分類號】:U661.1

【相似文獻(xiàn)】

相關(guān)期刊論文 前1條

1 李誼樂,劉應(yīng)中,繆國平;二階精度的VOF自由面追蹤方法及其應(yīng)用[J];船舶力學(xué);1999年01期

,

本文編號:2233799

資料下載
論文發(fā)表

本文鏈接:http://sikaile.net/kejilunwen/chuanbolw/2233799.html


Copyright(c)文論論文網(wǎng)All Rights Reserved | 網(wǎng)站地圖 |

版權(quán)申明:資料由用戶f2b18***提供,本站僅收錄摘要或目錄,作者需要?jiǎng)h除請E-mail郵箱bigeng88@qq.com
好吊日在线视频免费观看| 五月婷婷六月丁香亚洲| 大尺度剧情国产在线视频| 九九热这里只有精品视频| 欧美一区二区三区在线播放| 国产肥妇一区二区熟女精品| 久久这里只精品免费福利| 五月的丁香婷婷综合网| 欧美日韩成人在线一区| 美日韩一区二区精品系列| 中日韩美一级特黄大片| 视频一区日韩经典中文字幕| 亚洲欧美日本成人在线| 高清国产日韩欧美熟女| 国产亚洲欧美日韩精品一区| 老富婆找帅哥按摩抠逼视频| 亚洲熟女熟妇乱色一区| 亚洲男人的天堂就去爱| 小黄片大全欧美一区二区| 深夜福利亚洲高清性感| 国产中文字幕一区二区| 久久99夜色精品噜噜亚洲av| 亚洲国产精品国自产拍社区| 精品欧美一区二区三久久| 欧美夫妻性生活一区二区| 麻豆精品视频一二三区| 中文字幕欧美视频二区| 超碰在线播放国产精品| 日韩精品一区二区三区射精| 国内外免费在线激情视频| 国产精品一区二区视频成人| 国产精品白丝久久av| 婷婷开心五月亚洲综合| 日本美国三级黄色aa| 久久精品中文扫妇内射| 暴力三级a特黄在线观看| 欧美小黄片在线一级观看| 午夜精品一区免费视频| 亚洲av日韩一区二区三区四区| 丰满少妇被猛烈插入在线观看| 精品一区二区三区不卡少妇av |