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Full-Text Articles in Architecture
Average Speech Directivity, Samuel D. Bellows, Claire M. Pincock, Jennifer K. Whiting, Timothy W. Leishman
Average Speech Directivity, Samuel D. Bellows, Claire M. Pincock, Jennifer K. Whiting, Timothy W. Leishman
Directivity
Speech directivity describes the angular dependence of acoustic radiation from a talker’s mouth and nostrils and diffraction about his or her body and chair (if seated). It is an essential physical aspect of communication affecting sounds and signals in acoustical environments, audio, and telecommunication systems. Because high-resolution, spherically comprehensive measurements of live, phonetically balanced speech have been unavailable in the past, the authors have undertaken research to produce and share such data for simulations of acoustical environments, optimizations of microphone placements, speech studies, and other applications. The measurements included three male and three female talkers who repeated phonetically balanced passages …
Best Practices For Wake Model And Optimization Algorithm Selection In Wind Farm Layout Optimization, Nicholas F. Baker, Andrew P.J. Stanley, Jared J. Thomas, Andrew Ning, Katherine Dykes
Best Practices For Wake Model And Optimization Algorithm Selection In Wind Farm Layout Optimization, Nicholas F. Baker, Andrew P.J. Stanley, Jared J. Thomas, Andrew Ning, Katherine Dykes
Faculty Publications
This paper presents the results of two case studies regarding the wind farm layout optimization problem. We asked members of the computational optimization and wind communities to take part in the studies that we designed. Nine individuals participated. Case study 1 considered variations in optimization strategies for a given simple Gaussian wake model. Participants were provided with a wake model that outputs annual energy production (AEP) for an input set of wind turbine locations. Participants used an optimization method of their choosing to find an optimal wind farm layout. Case study 2 looked at trade-offs in performance resulting from variation …
Comparison Of Wind Farm Layout Optimization Results Using A Simple Wake Model And Gradient-Based Optimization To Large-Eddy Simulations, Jared J. Thomas, Jennifer Annoni, Paul Fleming, Andrew Ning
Comparison Of Wind Farm Layout Optimization Results Using A Simple Wake Model And Gradient-Based Optimization To Large-Eddy Simulations, Jared J. Thomas, Jennifer Annoni, Paul Fleming, Andrew Ning
Faculty Publications
The models used during wind farm layout optimization use simplifying assumptions that can alter the design space. Some characteristics of the simple models may negatively influence the resulting layouts. In this paper, we perform wind farm layout optimization using a simple wake model and compare the resulting improvements to large-eddy simulation (LES) results to confirm that the layout was actually improved. We begin by describing the models used, including changes specific for use with gradient-based optimization. We then compare our models’ output to previously published model and LES results. Using the models described, we performed gradient-based wind farm layout optimization …