TY - JOUR
TI - An analysis of incoming wind pulsation on the wind erosion
	processes on a hill
AU - Gnatowska, Renata
TI - An analysis of incoming wind pulsation on the wind erosion
	processes on a hill
AB - 
	The present analysis undertakes the problem of surface wind over topography. The main focus is placed upon the effect of oncoming wind oscillations on the velocity field structure around a single sinusoidal shaped 2D hill. Additional effort has been undertaken to recognize the inflow gust influence on the surface shear stress related to the mechanism of wind induced erosion. Numerical simulations have been performed through the use of the phase-averaged form of RNG version of k-ɛ turbulence model. Experimental verification of numerical data has been done in wind tunnels equipped with devices generating unsteady wind boundary layers. The main findings of the simulations reveal: a strong dependence between the characteristics of inflow periodicity and the structure of vortices of the separation region; the mean position of the reattachment point; the phase averaged velocity field; skin friction variability downstream from the hill. The results have significant implications for the prediction of sand transport in unsteady winds.
VL - 2015
IS - Budownictwo Zeszyt 2-B (12) 2015
PY - 2015
SN - 0011-4561
C1 - 2353-737X
SP - 273
EP - 280
DO - 10.4467/2353737XCT.15.136.4173
UR - https://ejournals.eu/czasopismo/czasopismo-techniczne/artykul/an-analysis-of-incoming-wind-pulsation-on-the-wind-erosion-processes-on-a-hill
KW - unsteady winds
KW - surface friction over the bump
KW - numerical modelling
KW - wind erosion