Multilevel inverters are readily used in renewable energy applications to overcome issues such as high harmonics distortion, higher switching losses and high voltage stress. This paper highlights a control scheme for ...
详细信息
Uniform watering and equal distribution of pesticides/fertilizers are very important for the growth of plants in nurseries, green houses and other micro farms. Though many modern techniques are being practiced, a mult...
详细信息
Automatic detection and classification of electrocardiogram (ECG) signals is of great importance for diagnosis of cardiac abnormalities. A method is proposed here to classify different cardiac abnormalities like Cardi...
详细信息
Corrugated structures have various applications in industry, civil engineering, offshore systems, and aerospace because of their excellent energy absorption property. When we use corrugated structures as cushioning or...
详细信息
This paper presents a comparative analysis of different control strategies applied to a two-link robotic manipulator. Robot control is crucial when it comes to real-time implementation of the control algorithms, hence...
详细信息
High voltage overhead reticulation lines are particularly vulnerable to lightning activity due to the lower basic insulation level (BIL) inherent to their design. Furthermore, in the South African context, these feede...
详细信息
Power management in a microgrid (MG) with various renewable energy sources (RES) and energy storage systems (ESS) is a primary concern nowadays. A number of factors are adding to the surge in power consumption, includ...
详细信息
Supernode is proposed in this paper to represent the subnets in the network, where the connection between the nodes in the subnet is tighter than the connections with others. The scenario on the module partition for d...
详细信息
Volume of Fluid (VOF) is used to compute the flow of fluids past arbitrarily shaped solid objects using Cartesian grids. The approach allows one to handle both stationary and moving boundaries with at least second ord...
详细信息
ISBN:
(纸本)1853128643
Volume of Fluid (VOF) is used to compute the flow of fluids past arbitrarily shaped solid objects using Cartesian grids. The approach allows one to handle both stationary and moving boundaries with at least second order accuracy at the boundary. The scheme uses a basic finite-difference scheme on a staggered grid, which can be enhanced to higher order using defect corrections. The boundary treatment is done by a variant of the Volume of Fluid (VOF) method. The VOF approach is employed only in cells that are affected by the boundary. The grid system includes option of locally refined grids. The system of equations is solved using a multi-grid method that utilises the global and local grid structure. The current implementation eliminates the problem of slow convergence due to the irregular cells at and near the boundaries. The numerical scheme is tested and evaluated first for a simple problem;namely the Stokes flow past a sphere. The results confirm the second order behaviour for smooth surfaces. A more difficult problem is the laminar pipe flow with an area constriction. Different Reynolds numbers are considered and the results are compared to those obtained using a standard body-fitted solver. The real advantage of the method is demonstrated for a flow past a rotating propeller placed in a square channel.
In recent years, simulation systems of the emergency evacuation have been proposed. It is required for the development of the simulation systems to verify them by comparing the results of the simulation with the actua...
详细信息
暂无评论