scholarly journals Development of local-scale high-resolution atmospheric dispersion model using large-eddy simulation. Part 4: turbulent flows and plume dispersion in an actual urban area

2014 ◽  
Vol 51 (5) ◽  
pp. 626-638 ◽  
Author(s):  
Hiromasa Nakayama ◽  
Bernd Leitl ◽  
Frank Harms ◽  
Haruyasu Nagai
Keyword(s):  
High Resolution ◽  
Large Eddy Simulation ◽  
Turbulent Flows ◽  
Dispersion Model ◽  
Atmospheric Dispersion ◽  
Local Scale ◽  
Plume Dispersion ◽  
Eddy Simulation ◽  
Large Eddy ◽  
Atmospheric Dispersion Model

scholarly journals Large eddy simulation using high-resolution and high-order methods

2009 ◽  
Vol 367 (1899) ◽  
pp. 2985-2997 ◽  
Author(s):  
D. Drikakis ◽  
M. Hahn ◽  
A. Mosedale ◽  
B. Thornber
Keyword(s):  
High Resolution ◽  
Large Eddy Simulation ◽  
Turbulent Flows ◽  
High Order ◽  
Complex Flows ◽  
Computing Power ◽  
Eddy Simulation ◽  
Large Eddy ◽  
Highly Turbulent Flows ◽  
Very High

Restrictions on computing power make direct numerical simulation too expensive for complex flows; thus, the development of accurate large eddy simulation (LES) methods, which are industrially applicable and efficient, is required. This paper reviews recent findings about the leading order dissipation rate associated with high-resolution methods and improvements to the standard schemes for use in highly turbulent flows. Results from implicit LES are presented for a broad range of flows and numerical schemes, ranging from the second-order monotone upstream-centered schemes for conservation laws to very high-order (up to ninth-order) weighted essentially non-oscillatory schemes.

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