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Biography

Turner has been with the University of Cincinnati since 2001. Initially Turner served as a Research Professor and, after six years, as an Associate Professor. Prior to his time with the University, he worked at Wright-Patterson AFB as a consultant with AP Solutions Inc., Open Mind Solutions and GE Aircraft Engines. He is currently co-director of the UC Gas Turbine Simulation Lab and also works with NASA Glenn Research Center on 3D Multistage Design Methods, AFRL on supersonic inlets, and Siemens Energy on Turbo machinery CFD. At UC, he teaches Fluids-Propulsion Classes (including the Senior Capstone Jet Engine Design Class), Numerical Methods (with Matlab), Rocket Propulsion, undergraduate Applied Aerodynamics, and graduate Turbo machinery Aerodynamics courses. Turner received his education from Virginia Tech in Blacksburg, VA. In 1986, he continued on to receive his Masters from the University of Cincinnati in Aeronautical Engineering. His Sc.D. (Doctor of Science) was awarded in 1990 by the department of Aeronautics and Astronautics at the Massachusetts Institute of Technology in Cambridge, MA. The Fellow designation is the highest elected grade of membership in ASME. Fellowship is conferred upon members with at least 10 years of active engineering practice who have made significant contributions to the profession. Turner was selected out of the 111,473 members of ASME.

Abstract

An abundant source of renewable energy is feasible by harnessing the kinetic energy of moving water bodies using hydro-kinetic energy conversion devices. The knowledge of wind-turbine design, turbomachinery and fluid dynamic principles of incompressible flow can be applied to design traditional and novel geometries of hydro-kinetic turbines behind a waterborne vehicle. A preliminary design is created using the Blade Element Momentum Theory (BEMT) which includes the Prandtl's correction for blade hub and tip losses. The axial and angular induction factors are calculated iteratively taking into account the coefficient of lift and drag of specific airfoils for a certain angle of attack obtained from Xfoil. Although BEMT does not account for the tip vortices and radial flow induced by the rotation, it provides a good initial geometry. The blade geometry can then be parametrically modified using an in-house 3D blade geometry generator (3DBGB) and analyzed further using a 3D CFD analysis system. Different configurations such as unshrouded single row, unshrouded counter rotating and shrouded single row hydro-kinetic turbines are designed based on a suitable power requirement. The shrouded design uses a traditional axial turbomachinery approach, a low subsonic design using 1-D meanline axisymmetric analysis suite (T-AXI). Novel geometries with solidity varying spanwise are also designed to take advantage of the flow across the turbine. Structural analysis of these shapes are crucial. A high fidelity design and analysis system for hydro-kinetic turbines is demonstrated. The turbine blade designs presented here are believed to revolutionize the renewable energy harness technology.