Kelvin‐helmholtz billows – a visual example
نویسندگان
چکیده
منابع مشابه
Differential Diffusion in Breaking Kelvin–Helmholtz Billows
Direct numerical simulations are used to compare turbulent diffusivities of heat and salt during the growth and collapse of Kelvin–Helmholtz billows. The ratio of diffusivities is obtained as a function of buoyancy Reynolds number Reb and of the density ratio R (the ratio of the contributions of heat and salt to the density stratification). The diffusivity ratio is generally less than unity (he...
متن کاملVisual Showcase: Interactive Example-based Hatching
We exhibit two printouts of computer-generated pen-and-ink hatching illustrations. These illustrations were created semiautomatically using an interactive example-based hatching method [Gerl and Isenberg 2013]. We would need space for two picture frames of 30 cm × 30 cm.
متن کاملVertically pointing airborne Doppler radar observations of Kelvin-Helmholtz billows
A train of Kelvin–Helmholtz billows in a deep stratiform cloud over a mountain range is documented using data from a high-resolution vertically pointing airborne Doppler radar. The billows had a spacing of 2–2.5 km and a small aspect ratio. The formation and decay of the billows appear to be related to flow acceleration over a mountain.
متن کاملPrandtl number effects on mixing in Kelvin-Helmholtz billows
We use DNS to study the effect of Prandtl number on mixing in weakly density stratified Kelvin-Helmholtz (KH) billows at low to moderate Reynolds numbers. The time evolution of the density field of the flow and the mixing are significantly influenced by the Prandtl number. By increasing the Prandtl number, the final amount of mixing increases for Reynolds that are too low to sustain three-dimen...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Atmosphere
سال: 1973
ISSN: 0004-6973
DOI: 10.1080/00046973.1973.9648364