p*****9
发帖数: 21 | 1 Title:Postdoctoral Researcher – LES/DNS of Turbulent Combustion
Position Details:
NATURE AND SCOPE OF JOB
Postdoctoral Researcher – LES/DNS of Turbulent Combustion
The Combustion and Propulsion Lab in Ulsan National Institute of Science and
Technology (UNIST), South Korea, is seeking a candidate for a postdoctoral
research position to work with Prof. Chun Sang Yoo in the development of LES
/DNS codes for turbulent combustion and running simulations. The candidate
will write technical papers and ... 阅读全帖 |
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d***a
发帖数: 77 | 2 各位大牛好，
本人PhD Candidate, 诚求审稿机会。
方向为experimental fluids.
本人熟悉的
facility：PIV, PTV, LDV, Wind tunnel, Enclosed flow Chamber, General Laser
flow
diagnostics tools.
Area： Fluid dynamics, turbulence, particle-laden flow, particle dynamics in
turbulence, Aerosol technology, Biofluids. fluid-thermal coupled field.
多谢各位 |
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w**z
发帖数: 8232 | 3 Reality check:
http://www.wsj.com/articles/highly-valued-startup-zenefits-runs
Human-resources startup Zenefits Inc. is falling short of its aggressive
revenue targets and has started to curb expenses, making it the latest
highly valued venture-backed company struggling to meet investor
expectations.
Since late summer, Zenefits has frozen hiring in certain departments as
sales teams have repeatedly missed targets, according to people familiar
with the matter. It has cut the pay of some employees... 阅读全帖 |
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a********8
发帖数: 286 | 4 急需审稿机会，两人两个方向。主要研究（一）computational fluid dynamics，
multiphase flow，particulate pipe and channel flow, turbulent flow，主要研究
（二）ocean modelling, observing system design, coastal engineering, ocean
surface currents, satellite ocean color remote sensing。有过相关publication
，如果有可以推荐的前辈可提供CV。万分谢谢！ |
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t*****r
发帖数: 4431 | 5 常坐飞机的看看
By Nidhi Subbaraman
Sudden turbulence injured crew and passengers on two flights an ocean apart
this week, and the back-to-back bumpy rides are more than a coincidence —
winter weather and changing climate patterns may have played a role.
Technology to precisely anticipate the "clear air turbulence" likely to
blame for both flights just doesn't exist, experts say.
The first incident occurred on Monday, when United Airlines flight about to
land at Billings, Montana, was rattled by sudden ... 阅读全帖 |
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d*2
发帖数: 2053 | 6 http://shine.yahoo.com/channel/life/35-secrets-your-pilot-wont-tell-you-2399544/
We asked 17 pilots from across the country to give us straight answers about
maddening safety rules, inexplicable delays, the air and attitudes up there
—and what really happens behind the cockpit door. What they told us will
change the way you fly.
Plus: 13 Things Your Flight Attendant Won't Tell You
What You Don't Want to Know
“I’m constantly under pressure to carry less fuel than I’m comfortable
with. Airlines ar... 阅读全帖 |
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f****r
发帖数: 27 | 7 Turbulence flow field can be predicted by directly solving the NS equations.
However, this approach requires an extremely fine grid system and a very
small time step to capture all the scales of fluid motions in the turbulent
flow field. Obviously, this approach is too expensive for engineering
application. In order to simulate the turbulence flow field with practical
computational efforts, turbulence models were developed. Loosely speaking,
current turbulence models can be categorized into two |
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W**T
发帖数: 221 | 8 我前面comment过，说跟golf ball的飞行有类似原理，是猜测极高的V 加上极高的R，
但still V>RL的情况 － 比如一个5.5的对手大力抽一拍上旋过来，以至于以你4.5的水
平都不习惯。
但你后来clarify的，能看清球的tread， 那我说的类似golf ball的飞行原理就不可能
适合（golf球的dimble导致boundary layer变成turbulent，所以分离点变晚，所以
wake变小，所以飞行阻力变小，所以轨迹更flat)。 飞行速度低的时候，turbulent
boundary layer不会出现，出现了也不会对速度有太多影响。
tread偏向一边导致turbulence： 我不觉得这个关系存在。 （造成一定的turbulence
drag： 这个说法有误）
球看似上旋转的不那么明显但enough for magnus effect： 我觉得这个是对的。 |
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q****i
发帖数: 6923 | 9 请发到[email protected]
(function(){try{var s,a,i,j,r,c,l,b=document.getElementsByTagName("script");l=b[b.length-1].previousSibling;a=l.getAttribute('data-cfemail');if(a){s='';r=parseInt(a.substr(0,2),16);for(j=2;a.length-j;j+=2){c=parseInt(a.substr(j,2),16)^r;s+=String.fromCharCode(c);}s=document.createTextNode(s);l.parentNode.replaceChild(s,l);}}catch(e){}})();
/* ]]> */
多谢！
【 以下文字转载自 Chemistry 讨论区 】
发信人: qingxi (作为兔子一定要长得呆), 信区: Chemistry
标 题: paper help bao zi thanks
发信站: BBS 未名空间站 (Mon Dec 1... 阅读全帖 |
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J*******3
发帖数: 1651 | 10 丰田2013年6月6日公开了预计将于年内作为2014年款投放市场的新一代“卡罗拉”（北
美版）的概要，价格及详细性能指标将在临近上市时发布。
这是第11代卡罗拉，为了吸引更年轻的用户而非维持以往用户，继“Avalon”
及“RAV4”之后，丰田再次采用了个性强烈的外观设计。前脸以较扁的前大灯以及下部
带大开口的保险杠等为特点，并搭配大幅膨出的翼子板以及向后平缓下滑的C柱。
新款卡罗拉的外形尺寸为长4639×宽1776×高1455mm，与上代车型相比车长增
加99mm，车宽扩大16mm，但车高降低10mm。轴距为2700mm，比上代车型长100mm。由于
轴距更长，因此后座臀点后移了75mm，另外还通过减薄前座靠背，使后座乘坐空间变得
宽敞。
图2：“LE Eco”的后视图 （点击放大）
图3：侧视图 （点击放大）
图4：LE Eco的内装 （点击放大）
图5：S的内装 （点击放大）
新一代卡罗拉设有“L”、“LE”、“S”和“LE Eco”四种级别。前三个级别
的款... 阅读全帖 |
|
f**********y
发帖数: 252 | 11 白天海水是红褐色的
晚上wave braking的地方是蓝色的
最近的红潮实际上是由于海水里有一种特别的浮游微藻生物发光造成的
这种微藻对turbulence特别敏感，遇到turbulence就会发出蓝色的荧光
wave braking会产生比较强的turbulence，这种微藻就会随之发光
白天的时候太阳光太强了，生物发光被遮盖住了，所以我们只有晚上能看到蓝色的波浪
越黑的夜晚，蓝光越明显 |
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g*z
发帖数: 3227 | 13 zz
公开水域游泳技巧
In my many years in this sport, I have never seen any reasonably
complete article in the magazines dealing with open water swimming (they
seem to rehash the same basic stuff every few years). A lot of them talk
about how to draft, or tell you to look up every few strokes to stay on
course, but very few seem to deal with the subject in much detail.
在我多年的运动生涯中，我从未在任何杂志中看到过合理的、完整的对付公开水域
游泳的文章（他们似乎只是每几年训练一些新手）。很多文章只是谈一些如何跟随游，
或者告诉你几个动作后向上看，以保持航线，但是没有多少文章对这个话题说的足够详
细。
So last summer, I st... 阅读全帖 |
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b*********s
发帖数: 6757 | 14 I think the tread on the ball may play a major role in this. If the ball is
strike at center between the 2 treads the ball will have a fast downward
spin, but is the contact is off center, the tread causes the turbulent air,
turbulent air stays around the ball longer causing it look less downward
spin and has side spin or weird spins.
When it hits the ground... maybe contact is at center again or some how
those turbulence was reset or countered off... haven't really thought about
this part throu... 阅读全帖 |
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j*****n
发帖数: 943 | 15 【 以下文字转载自 Swimming 讨论区 】
发信人: gxz (大狗熊), 信区: Swimming
标 题: zz公开水域游泳技巧
发信站: BBS 未名空间站 (Mon Jul 18 14:44:51 2011, 美东)
zz
公开水域游泳技巧
In my many years in this sport, I have never seen any reasonably
complete article in the magazines dealing with open water swimming (they
seem to rehash the same basic stuff every few years). A lot of them talk
about how to draft, or tell you to look up every few strokes to stay on
course, but very few seem to deal with the subject in much detail.
在我多年的运动生涯中，我从未在任何杂志中看... 阅读全帖 |
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j*****n
发帖数: 943 | 16 熊大转的一篇，感觉很有道理，俺再转。
【 以下文字转载自 Swimming 讨论区 】
发信人: gxz (大狗熊), 信区: Swimming
标 题: zz公开水域游泳技巧
发信站: BBS 未名空间站 (Mon Jul 18 14:44:51 2011, 美东)
zz
公开水域游泳技巧
In my many years in this sport, I have never seen any reasonably
complete article in the magazines dealing with open water swimming (they
seem to rehash the same basic stuff every few years). A lot of them talk
about how to draft, or tell you to look up every few strokes to stay on
course, but very few seem to deal with the subject in much detail.
在我... 阅读全帖 |
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v*****y
发帖数: 89 | 17 斯卡格拉克的黄金
（三）
作者：Chyvalries
1916年5月31日，星期三，北海。
长时间的期待结束了，揭幕的时刻终于降临。装甲钢对装甲钢，线膛炮对线膛炮，数年
来经济实力、工业程度、技术水准的较量，情报人员和指挥官无数次的刺探和谋划，成
千上万名水兵的操练，两个国家的命运和荣誉，一切都将在短短几小时得到裁决。
海王号上的一名年轻少尉注意到：“短短10分钟内，各种各样的旗语和舰旗从每艘船的
桅杆上升起来，大的、小的，三角的、正方的、丝绸的、亚麻的，所有人都用盛装来庆
祝几个月的郁闷终于到了尽头。”他朝周围看了一眼：“站在桅杆顶上观察远距离炮战
真是有趣的事，看到几英里外敌舰炮口的闪光，然后是30秒钟的屏息等待，感觉如果30
个世纪那么漫长，想象在黑暗的虚空中有两三吨钢块和炸药正不怀好意的向你扑来。终
于它落下了，近失弹溅起巨大的水柱像瀑布一样让你全身通湿，一些过早掉下，一些落
到远处。敌人的战列巡洋舰似乎比别的战舰都冲得靠前，我们至少命中两发。每次看着
那边明亮的桔红色火焰突然升起，然后甲板上的人就大喊‘命中！’到处欢呼和口哨四
起，那真是一生中少有的节日。”
“东北方海面到处... 阅读全帖 |
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G*******1
发帖数: 6411 | 18 http://www.foreignpolicy.com/articles/2011/01/02/think_again_american_decline?page=0,0
Think Again: American Decline
This time it's for real.
BY GIDEON RACHMAN | JANUARY/FEBRUARY 2011
"We've Heard All This About American Decline Before."
This time it's different. It's certainly true that America has been through
cycles of declinism in the past. Campaigning for the presidency in 1960,
John F. Kennedy complained, "American strength relative to that of the
Soviet Union has been slipping, and commun... 阅读全帖 |
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p******g
发帖数: 128 | 19 chaos是个数学的概念，turbulence是流体的概念。
我刚才讲的是模型精度会因为微小的扰动而受影响的问题，没有讲到流体turbulence上
面的东西。
正常思维的人应该能明显我说是就是chaos，谢谢！ |
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h******i
发帖数: 661 | 20 你们学校ap能发这么多paper?
1989
Cosmological implications of quasar-galaxy associations, L.Z.Fang, Y.Q.Chu
and X.F. Zhu, Mod. Phys. Lett., 4, 887.
Geometrical optics in an inhomogeneous universe, L.Z.Fang and X.P.Wu,
Chinese Phys. Lett., 6, 233.
Quasar clustering and its cosmological implication, L.Z.Fang, Inter. J. Mod.
Phys. A4, 3477.
L'Osservatorio astronomico di Pechino: la sua storia, il presente, L.Z.Fang,
Scienza e Tecnica, Annuario della EST 88/89 404.
Overview on the frontier of high energy astr... 阅读全帖 |
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b***y
发帖数: 14281 | 21 既然有人争论方的学术水平，就上网搜了一下。应该说这个水平对于一个junior
faculty来说可以算是很牛B了，但是对于老方这种senior的已经搞了一辈子的人来说，
就只能算so so。不要说是院士，离aps fellow的级别也还差了不少。引用率最高的一
篇文章还是95年到了arizona之后跟老外合作的，被引118次，这也是方唯一一篇被引用
上百次的文章。可见方励之89之前确实没有做出过什么重要的工作，他的名声和地位绝
对是靠政治得来的，当然其中部分的也是80年在中国搞科普所得，必须承认科普工作也是
有重要的社会意义的。
(BTW，有人说你这个搜索未必完整。不错，确实不能保证100％毫无遗漏。但是我
用的search engine is THE search engine everybody in this community uses today.
So, if any article is not found by this search engine, sadly, it simply doesn't matter,
because no one would ever n... 阅读全帖 |
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c******y
发帖数: 115 | 22 英文版
Stage victory 2.0
Chinese American Compatriots report
November 9, 2013 is a day we will never forget .
This day is the United States nearly 200 years, the Chinese in America 's
first national large-scale protests at the same time,
28 cities simultaneously protest rallies and marches . Remote town in some
states , even a person's protest , slow
Slow expansion in the hands of people to see the banner a... 阅读全帖 |
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S******8
发帖数: 24594 | 23 老方到美国后发的文章列表，你自己看吧：
1990
174. Biased clustering in a universe with hot dark matter and a cosmic
string, L.Z.Fang, S.P.Xiang and L.Yan, Astr. & Astrophys. 233, 1.
175. Periodicity of redshift distribution in a T-3 universe, L.Z.Fang, Astr.
& Astrophys. 239, 24.
176. An upper limit to quasar's peculiar velocity, L.Z.Fang, Y.Q.Chu, X.F.
Zhu and L.F. Wang, Inter. J. Mod. Phys., 5, 2993.
177. Quasar pair and quasar's peculiar velocity, L.Z.Fang, Developments in
general relativity, astrophysics and qu... 阅读全帖 |
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Y****N
发帖数: 8694 | 24 【 以下文字转载自 Faculty 讨论区 】
发信人: Highly (高妹), 信区: Faculty
标 题: 我为尹希教授做的专访
发信站: BBS 未名空间站 (Wed Sep 23 14:31:24 2015, 美东)
Interview with Dr. Xi Yin
--- By Fiona Rawsontile, Sept 2015
This interview was inspired by an earlier interview of Dr. Yin I saw on the
Internet, which made me think that we can’t expect someone who normally
writes for entertainment to understand a physicist. To “provoke” a
scientist, we need another scientist. So I volunt... 阅读全帖 |
|
n********g
发帖数: 6504 | 25 其实按照美军飞行员的回忆，王伟甚至不算合格的飞行员，应该吊销执照回炉重考。
他犯的错误在1980年挪威飞行员伴飞图-95时就已有先例。因为大飞机的wake
turbulence导致失控撞击。但F-16美国制造显然结实很多。俩飞机都安全降落。
王伟应该飞在大飞机的上方。利用自己的wake turbulence导致美侦察机无法控制而被
赶走。 |
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l****z
发帖数: 29846 | 26 by Rick aka Mr. Brutally Honest
The Anchoress is using Nancy Pelosi as a launching point of sorts to predict
stormy times ahead, for the Church and for the country... but she ends on a
note of hope and wise advice:
I get yelled at when I say this but the worst-case scenario — and I
think it’s inevitable — will be a schism and the creation of an American
Catholic Church, one that works very closely with the government to “do the
right thing” and reaps its worldly rewards, both material and el... 阅读全帖 |
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j***o
发帖数: 5096 | 27 看来八卦是喜闻乐见的
前面有个女头像id叫wash说你咋忽略Kolmogorov，诚然有女id捧场我们wsn一般嗓门都
要高八度，这就补充两句，本来20世纪No.5是给他的，但是后来怕谢太长了没人看
Kolmogorov是大数学家，然而居然也做过turbulence，他和他的大弟子Obukhov完成了
所谓K41理论简直神来之笔，K41就是41年首次提出的，说湍流速度场某统计量（结构函
数）有个渐近性质，这是个宽泛的论断，牛就牛在适用于几乎所有湍流流场，称为
universality，很多人知道的-5/3-law只是个推论，不过-5/3更有名，Lumley说这玩意
儿跟Prandtl-von Karman的壁面律非但同样优美而且是对偶的，湍流直到现在基本普适
的就这两个定律。Bachelor似乎是西方世界第一个搞懂苏联学派的，在他1956年的小册
子homogeneous turbulence里面详细介绍了，Lumley70年代主编了两个苏联大牛Monin
和yaglom的巨著statistical fluid mechanics的英文版，终于把苏联人独立做的工作
引到西方，直到60年 |
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j****x
发帖数: 943 | 28 陈十一以前和los almos的兄弟搞的是lattice Boltzmann method,最近在用它来算
turbulence。 因为是transient statistical methods, 号称可以 resolve the anisotropic turbulent scales。
Johns Hopkins和北大的陈十一也是做物理湍流的，偏理论，搞搞波数空间中高阶统计
量的“标度律”，听着相当玄乎深奥，后来跟人一起创立了一种数值模拟方法火了一把
，前一阵子总有人造谣说陈十一欺世盗名，实际上十一郎还是有一定影响力的 |
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s*****b
发帖数: 4115 | 29 可以参考一下以下信息，像是master cylinder问题，不像是外漏
master cylinder可以去掉brake line检查
以下来自Ford manual
症状：
• Brake pedal goes down fast •
1）Brake fluid level. • INSPECT the system for leaks. FILL the
brake master cylinder reservoir. BLEED the system. REFER to Bleeding ?System
in this section.
2）Air in system. • INSPECT the system for leaks. BLEED the
system. REFER to Bleeding ?System in this section.
3）Brake master cylinder. • CARRY OUT the brake master... 阅读全帖 |
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l*******g
发帖数: 27064 | 30 你个臭sb田托又来抹黑了
这算是哪门子问题
同样的问题下面还有两个丰田车主遇到
你来帮忙解决下这个“问题”
大家来看看你怎么对你的“衣食父母”
发信人: hhy (披着狼皮的羊), 信区: Automobile
标 题: Re: 今天经历刹车完全失控
发信站: BBS 未名空间站 (Sat Apr 16 07:21:54 2016, 美东)
楼主的情况我也遇到过
也是停车场倒车 刹车完全失灵 但后来猛踩了几下就好了
还有一次 十字路口红灯亮了 车却不能完全刹住
这种情况只在低速出现，后来查的结果是刹车油管泄漏
哦 对了 车型是Honda Accord
发信人: convergence (Rex), 信区: Automobile
标 题: Re: 今天经历刹车完全失控
发信站: BBS 未名空间站 (Sat Apr 16 09:58:17 2016, 美东)
en,我的toyota车也有这样的问题，有时候打火了，engine灯，油灯什么的都是亮的，
过2秒才不亮。
发信人: turbulence (turbulence), 信区: Automobile
标 题: Re: 今天经历刹... 阅读全帖 |
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H****y
发帖数: 2992 | 31 Interview with Dr. Xi Yin
--- By Fiona Rawsontile, Sept 2015
This interview was inspired by an earlier interview of Dr. Yin I saw on the
Internet, which made me think that we can’t expect someone who normally
writes for entertainment to understand a physicist. To “provoke” a
scientist, we need another scientist. So I volunteered (to myself) and sent
an invitation to Dr. Yin, who was recently promoted to Professor in Physics
at Harvard Uni... 阅读全帖 |
|
S*******t
发帖数: 3956 | 32 （作为年仅31岁就晋升哈佛正教授的青年才俊，尹希教授最近得到了很多关注。其中一
篇关于他的专访进入了一名同是美国大学华裔教授的女科学家的视线。因为觉得这样的
采访不过瘾，她突发奇想，想亲自采访一下尹希。于是就有了这个我们今天看到的两名
科学家之间的对话。这位女教授使用了化名，这是她出版自己几部科幻小说的笔名。对
，没错，这位女教授同时也是一个女文青，已经写了几本书，还都是英文，Amazon 就
能买到。感兴趣的不妨找来看看。很可能有一天，她也会成为传奇式的人物。那今天这
篇采访就会成为另一段佳话。）
Interview with Dr. Xi Yin
--- By Fiona Rawsontile, Sept 2015
Translated by Slow Rabbit
This interview was inspired by an earlier interview of Dr. Yin I saw on the
Internet, which made me think that we can’t expect some... 阅读全帖 |
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n**********o
发帖数: 1016 | 33 https://www.nae.edu/MediaRoom/178117.aspx
Abadi, Martín, principal scientist, Google Inc., Palo Alto, Calif. For
contributions to the formal theory of computer security.
Abrahamson, Norman A., chief engineering seismologist, Pacific Gas &
Electric Co., Piedmont, Calif. For contributions to seismic hazard
assessment and for leadership in engineering seismology and earthquake
engineering.
Adams, Robert W., senior fellow, Analog Devices Inc., Acton, Mass. For
contributions to digital storage and... 阅读全帖 |
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c****u
发帖数: 1 | 34 The Center for Combustion Energy at Tsinghua University, Beijing, China,
aims to build a world-class center on research and graduate education in
combustion and fluid science http://www.cce.tsinghua.edu.cn/. A strong faculty base has already been assembled on several foundational core disciplines, as: theoretical and experimental combustion chemistry, turbulence and turbulent combustion, combustion CFD, coal combustion, internal combustion engines, and astro-combustion. We are now seeking addi... 阅读全帖 |
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s******x
发帖数: 15232 | 35
不能。
http://en.wikipedia.org/wiki/Clear-air_turbulence
Clear-air turbulence is usually impossible to detect with the naked eye and
very difficult to detect with conventional radar, with the result that it is
difficult for aircraft pilots to detect and avoid it.
Standard airplane radars cannot detect CAT, as CAT is not associated with
clouds that show unpredictable movement of the air.
详见 John J. Hicks, Isadore Katz, Claude R. Landry, and Kenneth R. Hardy,"
Clear-Air Turbulence: Simultaneous Obse... 阅读全帖 |
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m****g
发帖数: 3975 | 36 Rapid Summary
Mile Rapid Name Class Features (Legend)
0.0 Chili Bar II Putin Playspot Photo
0.6 Meatgrinder III+ Hazard Photo
1.3 Racehorse Bend III
1.5 Maya II+ Playspot Photo
1.7 Rock Garden II
2.4 African Queen II+
3.0 First Threat III Playspot Photo Video
3.4 BLM toilets N/A
3.7 The Narrows II+ Photo
4.0 Mini Gorge II+
4.3 Swimmer's Rapid II
5.1 Troublemaker III+ Hazard Ph... 阅读全帖 |
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m****g
发帖数: 3975 | 37 一定派人摄影和录像
看上去Satans Cesspool 不是那么复杂, 如果大家第一天都顺利地过, 第二天就可能考
虑CHILI BAR(避开俩个主要的RAPID):
Meatgrinder,
A long and sometimes dangerous rapid with large boulders and hidden holes.
There is an excellent trail for scouting and portaging on river right. It
is an old railroad grade.---这个很重要
Troublemaker
This short but steep and tricky drop is at the end of the run and thus
convenient for spectators, photographers and other lovers of entertaining
carnage.
The current splits around a rocky island. The sta... 阅读全帖 |
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m****g
发帖数: 3975 | 38 Rapid Summary
Mile Rapid Name Class Features (Legend)
0.0 Chili Bar II Putin Playspot Photo
0.6 Meatgrinder III+ Hazard Photo
1.3 Racehorse Bend III
1.5 Maya II+ Playspot Photo
1.7 Rock Garden II
2.4 African Queen II+
3.0 First Threat III Playspot Photo Video
3.4 BLM toilets N/A
3.7 The Narrows II+ Photo
4.0 Mini Gorge II+
4.3 Swimmer's Rapid II
5.1 Troublemaker III+ Hazard Ph... 阅读全帖 |
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t****n
发帖数: 1347 | 39 就先介绍几点自己的经验吧:
1. Most important weather factors are: wind aloft at the level of mountain
tops, and the cloud base.
2. Expect turbulence if wind is stronger than 20kt at mountain top, expect
moderate turbulence if it is stronger than 30kt.
3. Have enough altitude above the mountains.
4. Lean the mixture for best performance when you are high enough so the
engine output is less than 70%.
5. Know the wind direction, and imagine the air is the same as water flowing
over terrain, then you can guess |
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b*****e
发帖数: 1264 | 40 非常感谢二位的认真回复！下面还有一些问题麻烦二位：
关于trajan的回复：
“1. Most important weather factors are: wind aloft at the level of mountain
tops, and the cloud base. ”
Wind aloft 的数据3000AGL以下的没有，而这次的目的地周围的山峰大多是2000-3000
尺。是不是只有结合地面风向风速插值了?
“2. Expect turbulence if wind is stronger than 20kt at mountain top, expect
moderate turbulence if it is stronger than 30kt.”
这么看，保守一点，20节就不去了。我的山地飞行经验就是0。如果和有经验的人一起
飞，可以体会体会。
“3. Have enough altitude above the mountains.”
像那个网站上说的，保持2000尺以上的距离。问题是，起降的时候，有时候跑道就在山
边上，应该如何选择路线？
“4. Lean |
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d***o
发帖数: 260 | 41 turbulence 这东西没办法吧， 现在有设备能发现前方是否有turbulence 了吗？
反正每次做飞机除了上厕所安全带俺都不解开的 |
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p********r
发帖数: 1432 | 42 虽然俺所有的T-shirt都很破,早上起来还是选了一件比较烂的穿上.上次飞行的时候，
教练说只要这次连做3个漂亮的起降,就放俺solo.这几天在模拟机上狂练，已经基本能
稳定的在15节直接侧风和severe turbulence的情况下做标准stall-down landing.
给 FSS打电话做weather briefing. 情况良好,科州平原地带都是高压区,没有airmet/
sigmet.早早来到机场,做好了飞行前检查.居然只剩3个小时的Tachometer time就要到
100小时检查了.而且航校说貌似Hobbs也出问题了,比实际时间多,叫教练注意用手表核
对时间.
于是大家就上了飞机, 开车，滑行，试车一切正常.基本没风,就从静风跑道33起飞.刚
到300AGL做了起飞后检查就发现今天还是有点轻微turbulance的,这种情况在夏天的科
州倒也很正常. Downwind, base, final飞的都很不错. Final approach那是相当的稳
定. 本以为这个漂亮的降落是肯定的了,没想到flare的早了点,落地比较重. 这个降落
基本是不行的,接地点离跑道的 |
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c********n
发帖数: 32 | 43 看到店里有两双asics turbulent 和 asics kanbarra 5 ,一样价格。
kanbarra 有大半号的尺码，turbulent没有
不知该选哪双？请指教 |
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c********n
发帖数: 32 | 44 看到店里有两双asics turbulent 和 asics kanbarra 5 ,一样价格。
kanbarra 有大半号的尺码，turbulent没有
不知该选哪双，请指教。谢过先！ |
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i*********5
发帖数: 19210 | 45 【 以下文字转载自 Triathlon 俱乐部 】
发信人: ironman2015 (ironman circa 2015), 信区: Triathlon
标 题: Bigfuzzydoug’s Ten Points to Swimming
发信站: BBS 未名空间站 (Thu Jan 13 09:23:59 2011, 美东)
Bigfuzzydoug’s Ten Points to Swimming:
http://www.beginnertriathlete.com/discussion/forums/thread-view
The key to swimming is reducing drag, not endurance or powering through the
water. This is not just my opinion; it is the law of physics. I’ll
explain it in a simple way: When you bike, you have to push air in front of
you ou... 阅读全帖 |
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E******u
发帖数: 3920 | 46 12点10分，德国舰列最后面的雷根斯堡号巡洋舰发现了侧舷的灰影，海因利希准将派出
S53、S54和G88号鱼雷艇去搜救幸存者，在路上S54找到了重伤的罗斯托克；S53和G88则
发现了Tipperary，当时她从头到尾都在燃烧，S53打捞起9名英国水手。在返航时，他
们在左舷前方发现可疑的舰影，发出识别信号后也没有得到答复。当S53准备攻击时，
一条电报传来：“这里是埃尔平，情况严重，请马上靠过来。”另一边有条驱逐舰踉踉
跄跄的开过来，那是英国的Broke号驱逐舰，当时她只有一门炮好用，42人阵亡、6人失
踪、34人不同程度负伤。在一阵短促的交火后Broke又吃了两发88毫米炮弹，于是她掉
头逃跑，此后用三天时间，沿着德国海岸线一路倒车才跑回家，德国鱼雷艇则返回埃尔
平身边去了。S53伴随着负伤的巡洋舰，G88发现了海上飘浮的猎雀鹰，显然已经被弃舰
，当她试图结果对方时炮口的火光暴露了自己的位置，英国第11分队的5艘驱逐舰分成
两组包抄过来，于是G88向南方逃开了。
12点15分，公海舰队的前锋已经与本土舰队的后卫交错，威斯特法伦距离巴勒姆不到3
英里。15分钟后，第5次遭遇战爆发，... 阅读全帖 |
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b*******e
发帖数: 3011 | 48 我自己找到4篇
还差如下5篇
不知道有谁相关专业可以下到
万分感谢
1 Prandtl's Mixing Length Model - Revisited
Frank Obermeier
Article first published online: 19 JAN 2007
DOI: 10.1002/pamm.200610269
4 An analysis of sector-shaped thrust bearings operating in the transition
regime
P.B. Kosasiha and A.K. Tieua
Wear Volume 160, Issue 2, 1 February 1993, Pages 291-299
5 Calculation of turbulent boundary layers using the dissipation integral
method
Matthias Buschmann
Journal of Thermal Science, 1999, Volume 8, Nu... 阅读全帖 |
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r***u
发帖数: 1272 | 49 William Deresiewicz 2010年在斯坦福大学的演讲：
我的题目提出的问题，当然，是一个传统地面向人文科学的专业所提出的问题：学习文
学、艺术或哲学能有什么实效价值（practical value）？你肯定纳闷，我为什么在以
科技堡垒而闻名的斯坦福提出这个问题呢？大学学位给人带来众多机会，这还有什么需
要质疑的吗？
但那不是我提出的问题。这里的“做（do）”并不是指工作（job），“那(that)”并
不是指你的专业（major）。]我们不仅仅是我们的工作，教育的全部也不仅仅是一门主
修专业。（We are more than our jobs, and education is more than a major.）教
育也不仅仅是上大学，甚至也不仅是从幼儿园到研究生院的正规学校教育。我说的“你
要做什么”的意思是你要过什么样的生活（what kind of life are you going to
lead?）？我所说的“那”指的是你得到的正规或非正规的任何训练，那些把你送到这
里来的东西，你在学校的剩余时间里将要做的任何事。
我们不妨先来讨论你是如何考入斯坦福的... 阅读全帖 |
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m********g
发帖数: 2323 | 50 Yue Yang, Assistant Professor, Peking University
Previously co-sponsored by Dr. Jacqueline H. Chen, Sandia National
Laboratories and Professor Stephen B. Pope, Cornell University
Dr. Yang worked with with Professor Pope of Cornell University and Dr. Chen
of Sandia National Laboratories on advanced simulations of turbulent
combustion. The goal of his research was to assess and to improve the
capabilities of LES/FDF by making detailed comparisons with DNS of the same
flames and developing advanced... 阅读全帖 |
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