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Wind tunnel testingWind tunnel testing ofWind tunnel ground-mounted solar photovoltaicPhotovoltaic (PV) structures is the most accurate method of obtaining pressure coefficientsPressure coefficients for the design of their components (e.g. purlins, posts). However, the reliability of these results depends on accurate modelling of the geometric features (e.g. module chord to thickness ratio) and appropriate instrumentation of the models for capturing the pressure patterns. Due to the typical smaller scales of these models, it is challenging to model some of the small features accurately. In addition, to allow for internal instrumentation, the scaled model often requires exaggerated PV module thickness. A series of wind tunnel testsWind tunnel test were designed at a scale of 1:10 to test whether this issue could be resolved by treating the edges of the models. The optimum edge-treatment design, representing the most accurate aerodynamics of the prototype, was determined by comparing the overall pressure coefficientsPressure coefficients and pressure distributions of several load cases. In addition to that, the optimum number of pressure taps along the chord required to accurately account for the pressure distributions, and hence, the overall load coefficients have also been investigated and presented in this paper.

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Wind Tunnel Model Design for Ground-Mounted Solar: Selected Best Practices

  • 会议论文

  • 发表日期：

    2026年

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  • Abul F. Akon,
  • Eri Gavanski,
  • Yarrow J. Fewless

摘要

Wind tunnel testingWind tunnel testing ofWind tunnel ground-mounted solar photovoltaicPhotovoltaic (PV) structures is the most accurate method of obtaining pressure coefficientsPressure coefficients for the design of their components (e.g. purlins, posts). However, the reliability of these results depends on accurate modelling of the geometric features (e.g. module chord to thickness ratio) and appropriate instrumentation of the models for capturing the pressure patterns. Due to the typical smaller scales of these models, it is challenging to model some of the small features accurately. In addition, to allow for internal instrumentation, the scaled model often requires exaggerated PV module thickness. A series of wind tunnel testsWind tunnel test were designed at a scale of 1:10 to test whether this issue could be resolved by treating the edges of the models. The optimum edge-treatment design, representing the most accurate aerodynamics of the prototype, was determined by comparing the overall pressure coefficientsPressure coefficients and pressure distributions of several load cases. In addition to that, the optimum number of pressure taps along the chord required to accurately account for the pressure distributions, and hence, the overall load coefficients have also been investigated and presented in this paper.