in order to evaluate the comparison of different intercropping patterns of cumin (cuminum cyminum l. ) with lentil (lens culinaris l.) in double crop, a field experiment was conducted based on a randomized complete block design with three replications and eight treatment at the farm located in west azerbaijan province - city nagadeh, iran during growing reason of 2011-2012. treatments included ...

Purpose The purpose of the paper is to predict aerodynamic performance a complete scale model H-Darrieus vertical axis wind turbine (VAWT) with end plates at different operating conditions. This aims understanding flow physics around VAWT for three tip speed ratios corresponding regimes. Design/methodology/approach study achieves first three-dimensional hybrid lattice Boltzmann method/very larg...

Front row burden is one of the key parameter to improve the bench blasting results. Improper design of the front row burden can create nuisances in the form of ground vibration, flyrock, back break or it may responsible for breakage of improper fragment size from the rockmass. Therefore, front row burden need to be optimised on the basis of proper scientific assessment. It has been proved that ...

Vernonia galamensis Cass is a huge potential industrial crop with very high content of vernolic acid in the seed oil. The experiment was carried out to determine the effect of inter- and intra- row spacing on the yield and yield related traits of Vernonia galamensis Cas.The experiment was conducted for two years during 2014-2015 on experimental field of Wondo Genet Agricultural research center,...

With the increasing demand for wind energy, vertical axis turbine (VAWT) is attracting more and attention. In order to design VAWT array better performance, wake model needs reflect characteristics well. Based on asymmetric characteristic, a new proposed in this paper, which combination of two semi Gaussian functions with different deviations, can be called “double model”. The simple has only f...

Vertical-axis wind turbines (VAWT) are excellent candidates to complement traditional and increase the total energy capacity. Development of VAWT has been hampered by their low efficiency structural unreliability, which related occurrence dynamic stall. Dynamic stall consists formation, growth, shedding large-scale vortices, followed massive flow separation. The vortex is detrimental turbine's ...

In order to shed light on the Vertical-Axis Wind Turbines (VAWT) wake characteristics, in this paper we present high-fidelity CFD simulations of flow around an exemplary H-shaped VAWT turbine, and propose apply Proper Orthogonal Decomposition (POD) computed field near rotor. The turbine under consideration was widely studied previous experimental computational investigations. first part study, ...