North Carolina Agricultural and Technical State University
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New Farmers of America Association
No full textOutdoor ovens.https://digital.library.ncat.edu/photos/1367/thumbnail.jp
New Farmers of America Association
No full textTwo men looking at displays of crops and canned goods.https://digital.library.ncat.edu/photos/1341/thumbnail.jp
New Farmers of America Association
No full textHouse surrounded by bushes.https://digital.library.ncat.edu/photos/1338/thumbnail.jp
New Farmers of America Association
No full textBeautified Agriculture Building.https://digital.library.ncat.edu/photos/1321/thumbnail.jp
Computational Fluid Dynamics Simulation on Blade Geometry of Novel Axial FlowTurbine for Wave Energy Extraction
No full textWave energy converters (WECs) utilizing the Oscillating Water Column (OWC) principle have gained prominence for harnessing kinetic energy from ocean waves. This study explores an innovative approach by transforming the pivoting Denniss–Auld turbine blades into a fixed configuration, offering a simplified alternative. The fixed-blade design emulates the maximum pivot points during the OWC’s exhalation and inhalation phases. Traditional Denniss–Auld turbines rely on complex hub systems to enable controllable blade rotation for performance optimization. This research examines the turbine’s efficiency without mechanical actuation. The simulations were conducted using ANSYS™ CFX 2023 R2 to solve the three-dimensional, incompressible, steady-state Reynolds-Averaged Navier–Stokes (RANS) equations, employing the k-ω SST turbulence model to close the system of equations. A grid convergence study was performed, and the numerical results were validated against available experimental and numerical data. An in-depth analysis of the intricate flow field around the turbine blades was also conducted. The modified Denniss–Auld turbine demonstrated a broad operating range, avoiding stalling at high flow coefficients and exhibiting performance characteristics like an impulse turbine. However, the peak efficiency was 12%, significantly lower than that of conventional Denniss–Auld and impulse turbines. Future research should focus on expanding the design space through parametric studies to enhance turbine efficiency and power output
New Farmers of America Association
No full text1st place shop winner, Emanuel Bass.https://digital.library.ncat.edu/photos/1381/thumbnail.jp
New Farmers of America Association
No full textWinners of Soil and Water Management Contest: Clarence E. Branden, Lexa, Arkansas; and Odester Carter, Quincy, Florida.https://digital.library.ncat.edu/photos/1373/thumbnail.jp
New Farmers of America Association
No full textShrubbery before pruning and working.https://digital.library.ncat.edu/photos/1365/thumbnail.jp
New Farmers of America Association
No full textMen standing around with sacks of produce, with young boys in uniforms in the background.https://digital.library.ncat.edu/photos/1397/thumbnail.jp
New Farmers of America Association
No full textYoung man standing in a field of crops.https://digital.library.ncat.edu/photos/1394/thumbnail.jp