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Area of Science:

  • Engineering
  • Aerodynamics
  • Structural Mechanics

Background:

  • Doubly curved membrane structures are increasingly used in architectural and engineering applications.
  • Understanding their aerodynamic behavior under wind loads is crucial for safe design.
  • Existing data on wind effects on these specific geometries is limited.

Purpose of the Study:

  • To generate a comprehensive dataset of aerodynamic measurements for common doubly curved membrane structures.
  • To investigate the influence of different flow conditions (atmospheric boundary layer, tornado, downburst) on aerodynamic forces.
  • To provide data for improving design guidelines and computational models for these structures.

Main Methods:

  • Experimental testing of 1:25 scale models of hypar, ridge valley, arch supported, cone, and umbrella geometries.
  • Testing under atmospheric boundary layer (ABL) flow at angles of attack from 0° to 180°.
  • Additional testing of cone geometry in row and group arrangements, and hypar geometry under tornado and downburst flows.

Main Results:

  • Collection of approximately 425 tests, yielding extensive pressure time series data.
  • Detailed aerodynamic measurements for isolated and grouped membrane structures.
  • Data captures structural responses under diverse wind scenarios, including extreme weather.

Conclusions:

  • The generated dataset provides critical insights into the wind loading of doubly curved membrane structures.
  • This data will aid in the development of more accurate design guidelines and computational fluid dynamics (CFD) models.
  • The open-source availability of the data supports further research and innovation in the field.