Numerical simulation of the atmospheric flow in a mountainous region of the North of Portugal

1998 ◽  
Vol 74-76 ◽  
pp. 219-228 ◽  
Author(s):  
A. Maurizi ◽  
J.M.L.M. Palma ◽  
F.A. Castro
Keyword(s):  
Numerical Simulation ◽  
Mountainous Region ◽  
Atmospheric Flow ◽  
The North

scholarly journals A SEA BREEZE NUMERICAL SIMULATION AND CIRCULATION ANALYSIS IN ORAN, ALGERIA, URBAN ATMOSPHERE

2016 ◽  
Vol 9 (2) ◽  
pp. 139-145
Author(s):  
Abdelkrim Benlefki ◽  
Benouada Douaiba ◽  
Azzi Abbes
Keyword(s):  
Numerical Simulation ◽  
Sea Breeze ◽  
Urban Atmosphere ◽  
Atmospheric Flow ◽  
The North ◽  
Grid Simulation ◽  
Surface Data ◽  
Spatio Temporal ◽  
North Algeria

In this paper the sea breeze dynamics in Oran agglomeration atmosphere, in the north Algeria, is investigated and analyzed by a numerical simulation of Oran agglomeration atmosphere, using SUBMESO model during diurnal cycle of June 24, 2010, in order to predict the spatio-temporal starting of sea breeze, its intensity and relative direction through atmospheric flow variations analysis, and to evaluate the role of thermal circulations on sea breeze direction, intensity and ventilation and its effect on pollutant transport. The study of this area has not been investigated or analyzed in any framework, the numerical simulation was preceded by a topographic and surface data processing in order to generate the grid simulation, with a specific characteristics used by the SUBEMESO and SM2-U (Soil Model for Sub-Meso scales Urbanized) models. This simulation allowed us to know all sea breeze characteristics during the study period.

scholarly journals A SEA BREEZE NUMERICAL SIMULATION AND CIRCULATION ANALYSIS IN ORAN, ALGERIA, URBAN ATMOSPHERE

2016 ◽  
Vol 9 (2) ◽  
pp. 139-145
Author(s):  
Abdelkrim Benlefki ◽  
Benouada Douaiba ◽  
Azzi Abbes
Keyword(s):  
Numerical Simulation ◽  
Sea Breeze ◽  
Urban Atmosphere ◽  
Atmospheric Flow ◽  
The North ◽  
Grid Simulation ◽  
Surface Data ◽  
Spatio Temporal ◽  
North Algeria

In this paper the sea breeze dynamics in Oran agglomeration atmosphere, in the north Algeria, is investigated and analyzed by a numerical simulation of Oran agglomeration atmosphere, using SUBMESO model during diurnal cycle of June 24, 2010, in order to predict the spatio-temporal starting of sea breeze, its intensity and relative direction through atmospheric flow variations analysis, and to evaluate the role of thermal circulations on sea breeze direction, intensity and ventilation and its effect on pollutant transport. The study of this area has not been investigated or analyzed in any framework, the numerical simulation was preceded by a topographic and surface data processing in order to generate the grid simulation, with a specific characteristics used by the SUBEMESO and SM2-U (Soil Model for Sub-Meso scales Urbanized) models. This simulation allowed us to know all sea breeze characteristics during the study period.

scholarly journals Optimal design of the solar tracking system of parabolic trough concentrating collectors

2020 ◽  
Vol 15 (4) ◽  
pp. 613-619
Author(s):  
Li Kong ◽  
Yunpeng Zhang ◽  
Zhijian Lin ◽  
Zhongzhu Qiu ◽  
Chunying Li ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Solar Radiation ◽  
Tracking System ◽  
Low Cost ◽  
Parabolic Trough ◽  
The North ◽  
Tracking Mode ◽  
Solar Tracking ◽  
East West

Abstract The present work aimed to select the optimum solar tracking mode for parabolic trough concentrating collectors using numerical simulation. The current work involved: (1) the calculation of daily solar radiation on the Earth’s surface, (2) the comparison of annual direct solar radiation received under different tracking modes and (3) the determination of optimum tilt angle for the north-south tilt tracking mode. It was found that the order of solar radiation received in Shanghai under the available tracking modes was: dual-axis tracking > north-south Earth’s axis tracking > north-south tilt tracking (β = 15°) > north-south tilt tracking (β = 45) > north-south horizontal tracking > east-west horizontal tracking. Single-axis solar tracking modes feature simple structures and low cost. This study also found that the solar radiation received under the north-south tilt tracking mode was higher than that of the north-south Earth’s axis tracking mode in 7 out of 12 months. Therefore, the north-south tilt tracking mode was studied separately to determine the corresponding optimum tilt angles in Haikou, Lhasa, Shanghai, Beijing and Hohhot, respectively, which were shown as follows: 18.81°, 27.29°, 28.67°, 36.21° and 37.97°.

Lagrangian data in a high-resolution numerical simulation of the North Atlantic

2001 ◽  
Vol 29 (1-4) ◽  
pp. 157-176 ◽  
Author(s):  
Zulema D Garraffo ◽  
Arthur J Mariano ◽  
Annalisa Griffa ◽  
Carmela Veneziani ◽  
Eric P Chassignet
Keyword(s):  
Numerical Simulation ◽  
High Resolution ◽  
North Atlantic ◽  
The North ◽  
The North Atlantic ◽  
Lagrangian Data

Turbulent behavior of a fine mesh (1/12°) numerical simulation of the North Atlantic

1999 ◽  
Vol 21 (1-4) ◽  
pp. 307-320 ◽  
Author(s):  
A.M Paiva ◽  
J.T Hargrove ◽  
E.P Chassignet ◽  
R Bleck
Keyword(s):  
Numerical Simulation ◽  
North Atlantic ◽  
Fine Mesh ◽  
The North ◽  
The North Atlantic

Numerical Simulation of Atmospheric Flow Field around Bridge

2013 ◽  
Vol 368-370 ◽  
pp. 1379-1382
Author(s):  
Ying Jia ◽  
Li Zhang ◽  
Sheng Zhang
Keyword(s):  
Numerical Simulation ◽  
Flow Field ◽  
Pressure Distribution ◽  
Cross Section ◽  
Horizontal Plane ◽  
Atmospheric Flow ◽  
Airflow Field ◽  
Distribution Laws ◽  
The Cross

This paper carries out a numerical simulation of the atmospheric flow field around bridge. The variation law of airflow field around bridge is studied. Velocity and pressure distribution laws of flow field in horizontal plane and the cross-section are discussed, and influence range of flow field around bridge area is identified.

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