2016
DOI: 10.1088/1742-6596/753/8/082008
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Intercomparison of terrain-following coordinate transformation and immersed boundary methods in large-eddy simulation of wind fields over complex terrain

Abstract: Abstract. Accurate modeling of complex terrain, especially steep terrain, in the simulation of wind fields remains a challenge. It is well known that the terrain-following coordinate transformation method (TFCT) generally used in atmospheric flow simulations is restricted to non-steep terrain with slope angles less than 45 degrees. Due to the advantage of keeping the basic computational grids and numerical schemes unchanged, the immersed boundary method (IBM) has been widely implemented in various numerical co… Show more

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Cited by 9 publications
(16 citation statements)
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“…The centre of the hill is located at x/L x = 1/4 and y/L y = 1/2. The roughness height of the hill surface is z 0,IB = 2z 0 , see also Fang and Porté-Agel [32]. Figures 9 and 10 show that the vertical profiles of (…”
Section: Complex Terrain Simulations: Flow Over Three-dimensional Hillmentioning
confidence: 77%
See 3 more Smart Citations
“…The centre of the hill is located at x/L x = 1/4 and y/L y = 1/2. The roughness height of the hill surface is z 0,IB = 2z 0 , see also Fang and Porté-Agel [32]. Figures 9 and 10 show that the vertical profiles of (…”
Section: Complex Terrain Simulations: Flow Over Three-dimensional Hillmentioning
confidence: 77%
“…The figure shows that the agreement at z/h = 1 is also very good and that the maximum difference of the velocity and turbulence intensity obtained from the high resolution simulation and the experiments is only about 5% and 15%, respectively. We note that the simulations somewhat underestimate the velocity close to the ground (z/h = 0.125) [19,32]. The reason is that the large-eddy simulation in which the wall effect is modeled is less accurate close to the wall.…”
Section: Complex Terrain Simulations: Flow Over Three-dimensional Hillmentioning
confidence: 85%
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“…The melting of snow cover occurs faster with increasing slope inclination, but also with increasing wind speed (Grünewald et al 2010), which is indirectly influenced by the topography. This is because topography modifies the wind field, creating various types of effects increasing or decreasing the speed and direction of air flow (Kondo et al 2002;Hertenstein and Kuettner 2005;Lewis et al 2008;Fang and Porté-Agel 2016), thus changing the conditions of snow cover deposition and ablation.…”
Section: Snow Cover Of Svalbard Tundra Areas In the Light Of Literature 41 Snow Cover Relationship With Land Cover And Reliefmentioning
confidence: 99%