Numerical simulation of heavy gas cloud dispersion within topographically complex terrain

1994 ◽  
Vol 7 (5) ◽  
pp. 391-396 ◽  
Author(s):  
Georgios A. Perdikaris ◽  
Franz Mayinger
Keyword(s):  
Numerical Simulation ◽  
Complex Terrain ◽  
Heavy Gas ◽  
Gas Cloud

Simulation Method for 3-D Wind Field over Complex Terrain with Asymmetrical Mountains

2013 ◽  
Vol 444-445 ◽  
pp. 549-554
Author(s):  
Huan Ran Hu ◽  
Guan Xin Hong
Keyword(s):  
Fluid Dynamics ◽  
Numerical Simulation ◽  
Turbulence Intensity ◽  
Potential Flow ◽  
Wind Field ◽  
Complex Terrain ◽  
Simulation Method ◽  
Engineering Practice ◽  
Characteristics Analysis ◽  
Flow Theories

It is important for the research of flight characteristics to master the distribution of wind field and the character of turbulence intensity in a complex-terrain mountain. Based on the potential flow theories in fluid dynamics, a numerical simulation method of complex terrain including asymmetrical and symmetrical mountains has been developed in this paper. In particular, asymmetrical mountains are simulated by the combination of two transformed quarter-semiellipsoids. Furthermore, mountain-induced airflow is calculated based on potential flow theory, which could reflect the characteristic of wind field. As an example, the wind field near Dingling airport in Beijing has been simulated and analyzed by this method. The results demonstrate that this method is suitable and accurate for engineering practice, and also applicable for flight dynamics characteristics analysis of aircrafts.

Sign in / Sign up

Export Citation Format

Share Document