上升暖气流是如何真的释放吗?- 江南体育网页版- - - - -地球科学堆江南电子竞技平台栈交换 最近30从www.hoelymoley.com 2023 - 08 - 22 - t03:06:03z //www.hoelymoley.com/feeds/question/7732 https://creativecommons.org/licenses/by-sa/4.0/rdf //www.hoelymoley.com/q/7732 9 上升暖气流是如何真的释放吗? 帕维尔•沃罗宁 //www.hoelymoley.com/users/5603 2016 - 03 - 24 - t15:43:07z 2016 - 07 - 27 - t09:13:58z < p >滑翔机、滑翔伞、滑翔机飞行员用于说< em >“热释放的触发”< / em >。< br / > < / p > < p >的区域对比反射率(土地/水、开垦的土地/森林)或地方地形剖面变化突然被触发/释放点。甚至有传说最后的希望当滑翔机飞行员潜入演习,使低通在过热的麦田,从而释放出热。< br / > < / p > < p >也有分裂倾向上升暖气流的行为对于区域——这是平地或山脉仿佛自然法则是不同的。< br / > < / p > < p >有两件事我不喜欢。< / p >

1) The claims are not supported by or at least reference any scientific proof.
2) My own humble experience of thermal soaring partially contradicts with common beliefs.

I have many times witnessed long living dust devils. They are good examples of a non stationary point of detachment of hot air from the land surface. They actively move instead of being fixed to some special point like top of the heel. Dust devils (not tornado) also can appear above water surface, so it looks like unstable layer of overheated air can magically ignore heat contrast between land and water.

Large thermals also behave similarly...Well, at least some of them.

In springs, when people burn old leaves, the smokes of fires converge and literally show you the point where thermal is. Being 1500 meters above the ground allows you to notice that the lowest part of the thermal moves quite noticeably even without background wind and do not stop where forest begins.

The only practically useful book about thermals I have read so far is Scorer R. S. Environmental aerodynamics, Ellis Horwood Limitid Publisher Chichester. — N. Y., 1978. Though Scorer writes much about thermals structure (jets, plumes, thermals), he says almost nothing about how exactly unstable air is perturbed to give a birth to a thermal.

//www.hoelymoley.com/questions/7732/-/7759 # 7759 2 kamran回答的是如何上升暖气流真的释放吗? kamran //www.hoelymoley.com/users/5697 2016 - 03 - 29 - t05:13:15z 2016 - 03 - 29 - t07:01:12z < p >我飞得,所以我有关于戒烟第一手的经验,与运动的空气下面13000英尺(Cessna 172)。我有简单的版本:在原本平静的天气热有三个阶段,从侧面看起来像一棵树。基础水平接近地球的根源。列是树干。冷却和消散在高海拔树冠。< / p >

The part that has lifting power most is column because it picks up speed and momentum while it spins and whirls like the water draining into a sinkhole. The rising column can be pushed and swivel around by wind or topology of area surrounding it. The source of energy is dark surface or topology or local climate that can create layered temperature gradient from hot near ground to cold at altitude. Of course as we pilots of small planes know there are many other factors involved specially in mountains. Fire fighters are keenly aware of the tunneling effect and unpredictability of thermal near the canyons.

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