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Mechanical Engineering

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Portland State University

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2014

Stochastic analysis

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Full-Text Articles in Engineering

Identification Of Markov Process Within A Wind Turbine Array Boundary Layer, Matthew Scott Melius, Murat Tutkun, Raúl Bayoán Cal Mar 2014

Identification Of Markov Process Within A Wind Turbine Array Boundary Layer, Matthew Scott Melius, Murat Tutkun, Raúl Bayoán Cal

Mechanical and Materials Engineering Faculty Publications and Presentations

The Markovian properties within a wind turbine array boundary layer are explored for data taken in a wind tunnel containing a model wind turbine array. A stochastic analysis of the data is carried out using the mathematics of Markov processes. The data were obtained using hot-wire anemometry thus providing point velocity statistics. The theory of Markov process is applied to obtain a statistical description of longitudinal velocity increments inside the turbine wake. Comparison of two- and three-scale conditional probability density functions indicates the existence of Markovian properties in longitudinal velocity increments for scale differences larger than the Taylor microscale. This …