Organized Structure of Active Turbulence Over an Array of Cubes within the Logarithmic Layer of Atmospheric Flow

2010 ◽  
Vol 135 (2) ◽  
pp. 209-228 ◽  
Author(s):  
Atsushi Inagaki ◽  
Manabu Kanda
Keyword(s):  
Atmospheric Flow ◽  
Active Turbulence ◽  
Logarithmic Layer

scholarly journals Vertical cross-spectral phases in atmospheric flow

2014 ◽  
Vol 555 ◽  
pp. 012017 ◽  
Author(s):  
A Chougule ◽  
J Mann ◽  
M Kelly
Keyword(s):  
Atmospheric Flow

scholarly journals Progressive Monte Carlo rendering of atmospheric flow features across scales

2017 ◽  
Vol 2 (9) ◽  
Author(s):  
Tobias Günther ◽  
Alexander Kuhn ◽  
Hans-Christian Hege ◽  
Markus Gross ◽  
Holger Theisel
Keyword(s):  
Monte Carlo ◽  
Atmospheric Flow ◽  
Monte Carlo Rendering ◽  
Flow Features

scholarly journals An isolated logarithmic layer

2021 ◽  
Vol 916 ◽  
Author(s):  
Yongseok Kwon ◽  
Javier Jiménez
Keyword(s):  
Logarithmic Layer

Abstract

scholarly journals On the modelling of large-scale atmospheric flow

2021 ◽  
Vol 285 ◽  
pp. 751-798
Author(s):  
A. Constantin ◽  
R.S. Johnson
Keyword(s):  
Large Scale ◽  
Atmospheric Flow

scholarly journals Saharan dust and giant quartz particle transport towards Iceland

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
György Varga ◽  
Pavla Dagsson-Walhauserová ◽  
Fruzsina Gresina ◽  
Agusta Helgadottir
Keyword(s):  
Numerical Models ◽  
Saharan Dust ◽  
Atmospheric Environment ◽  
The Arctic ◽  
Dust Particles ◽  
Atmospheric Flow ◽  
Dust Transport ◽  
Strong Winds ◽  
Dust Events ◽  
Local Dust

AbstractMineral dust emissions from Saharan sources have an impact on the atmospheric environment and sedimentary units in distant regions. Here, we present the first systematic observations of long-range Saharan dust transport towards Iceland. Fifteen Saharan dust episodes were identified to have occurred between 2008 and 2020 based on aerosol optical depth data, backward trajectories and numerical models. Icelandic samples from the local dust sources were compared with deposited dust from two severe Saharan dust events in terms of their granulometric and mineralogical characteristics. The episodes were associated with enhanced meridional atmospheric flow patterns driven by unusual meandering jets. Strong winds were able to carry large Saharan quartz particles (> 100 µm) towards Iceland. Our results confirm the atmospheric pathways of Saharan dust towards the Arctic, and identify new northward meridional long-ranged transport of giant dust particles from the Sahara, including the first evidence of their deposition in Iceland as previously predicted by models.

Analysis of Neutrally Stable Atmospheric Flow over a Two-Dimensional Forward-Facing Step

AIAA Journal ◽  
1980 ◽  
Vol 18 (1) ◽  
pp. 32-38 ◽  
Author(s):  
Walter Frost ◽  
Juergen Bitte ◽  
Chih Fang Shieh
Keyword(s):  
Two Dimensional ◽  
Atmospheric Flow ◽  
Forward Facing Step

Vertical cross-spectral phases in neutral atmospheric flow

2012 ◽  
Vol 13 ◽  
pp. N36 ◽  
Author(s):  
A. Chougule ◽  
J. Mann ◽  
M. Kelly ◽  
J. Sun ◽  
D. H. Lenschow ◽  
...  
Keyword(s):  
Atmospheric Flow

Autothermal Reforming of Propane Over Ni Catalysts Supported on a Variety of Perovskites

2007 ◽  
Vol 7 (11) ◽  
pp. 4013-4016 ◽  
Author(s):  
SeungSoo Lim ◽  
DongJu Moon ◽  
JongHo Kim ◽  
YoungChul Kim ◽  
NamCook Park ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Storage Capacity ◽  
Flow Reactor ◽  
Oxygen Storage Capacity ◽  
Autothermal Reforming ◽  
Oxygen Storage ◽  
Hydrogen Yield ◽  
Impregnation Method ◽  
Ni Catalysts ◽  
Atmospheric Flow

Autothermal reforming of propane for hydrogen over Ni catalysts supported on a variety of perovskites was performed in an atmospheric flow reactor. Perovskite is known for its higher thermal stability and oxygen storage capacity, but catalytic activity of itself is low. A sites of the ABO3 structured perovskites were occupied by La while B sites by one of Fe, Co, Ni, and Al by citrate method. The composition of the reactant mixture was H2O/C/O2 = 8.96/1.0/1.1. The changes in the states of the catalysts after reaction were analyzed by XRD, TPD, and TGA. Ni/LaAlO3 catalyst maintained the perovskite structure after reaction. It showed higher hydrogen yield and thermal stability compared to those of the catalysts with Fe, Co, or Ni in B sites. Catalysts prepared by deposition-precipitation (DP) method showed higher activity than those prepared by impregnation method, presumably due to the smaller sizes of the NiO crystal particles.

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