Two-dimensional computational fluid dynamics (CFD) simulations are employed to investigate the effects of adding a circular-arc-shaped windshield on performance Banki type vertical axis wind turbine (VAWT), particularly application where VAWT is harnessing energy in highway caused by passing vehicles. Unsteady Reynolds-Averaged Navier-Stokes (URANS) approach used calculate turbulent flow within...

This study aims to investigate the aerodynamic analysis of a Darrieus-type vertical axis wind turbine (VAWT) using Lattice Boltzmann Method (LBM). The objective is assess accuracy and performance meshless LBM approach in predicting torque coefficients, velocity, turbulence intensity, vorticity distributions for VAWT analysis. Two modelling approaches, Large Eddy Simulation (LES) Reynolds-Averag...

The authors describe a novel suture fixation technique that combines a doubled suture with a sliding knot. The knot can be tied in both open and arthroscopic surgery to fix torn tendons/ligaments and fractured/osteotomized bones. The advantages of the doubled-suture Nice knot include strength, adjustability, simplicity, and versatility. This technique, which has proven useful in the authors' pr...

Vertical-axis wind turbines (VAWTs) have a long history, with wide variety of turbine archetypes that been designed and tested since the 1970s. While few utility-scale VAWTs currently exist, placement generator near base could make advantageous over tradition horizontal-axis for floating offshore applications via reduced platform costs improved scaling potential. However, there are numerical de...

Technological advancements have improved energy efficiency and increased requirements requiring density solutions to optimally utilize the existing landscape. The renewable of urban rooftops can be by introducing micro wind farms consisting vertical axis turbines (VAWT). VAWTs do not require directed flow thus a feasible choice. In this paper, preliminary study for parametric design horizontal ...

Objective: An experiment was conducted at Wondo Genet Agricultural Research Center in the production season of 2013/14 and 2014/15 with the objective of identifying the best combination of intra and inter-row spacing for optimum plant population density of stevia. Methods: The experiment was conducted using five intra-row spacing (20cm, 25cm, 30cm, 35cm, and 40...