ALDEN conducted a comprehensive, multi-faceted flow model study of the addition of a proposed powerhouse (including three turbines) at the Meldahl Locks and Dam facility on the Ohio River. Meldahl Locks and Dam are operated by the Huntington District of the U. S. Army Corps of Engineers (USACE) for navigation. As part of the powerhouse design optimization, Alden studied the effect of the power house addition on flow conditions in the approaches. Flow patterns approaching the powerhouse were also evaluated to ensure optimum turbine performance.
Alden designed, constructed and tested an undistorted, 1:120 scale comprehensive riverine model physical that included approximately 17,000 ft of the Ohio River. The model was used to evaluate and minimize the impact of the hydropower project on navigation.
In addition to the physical model, a 3D CFD model of the powerhouse intake was coupled with a 1:40 scale model of the intake canal and powerhouse structure to evaluate excavation requirements and ensure favorable flow patterns at the power house intake for increased turbine life and efficiency.