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<p>Understanding the development of turbulent jets in subsonic nozzles is essential for improving jet noise prediction models and for validating high-fidelity numerical simulations in aerospace applications. Within the framework of the NATO STO AVT-415 activity, a dedicated experimental campaign was carried out at the Italian Aerospace Research Center (CIRA) to investigate the velocity field and turbulence characteristics at the inlet and exit of a novel subsonic nozzle configuration using hot-wire anemometry (HWA). The results offer a comprehensive description of the flow evolution downstream of the nozzle exit and a detailed characterization of the turbulence properties upstream of the nozzle. These measurements are of significant importance for validating numerical simulations and establishing accurate boundary conditions.</p>

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Hot-Wire Velocity Measurements in Subsonic Nozzle Flows: An Experimental Test Campaign

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年7月8日

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  • Roberto Camussi,
  • Elisa De Paola,
  • Alessandro Talamelli,
  • Lorenzo Lazzarini,
  • Salvatore Palazzo,
  • Fabrizio De Gregorio,
  • Karl-Stéphane Rossignol

摘要

Understanding the development of turbulent jets in subsonic nozzles is essential for improving jet noise prediction models and for validating high-fidelity numerical simulations in aerospace applications. Within the framework of the NATO STO AVT-415 activity, a dedicated experimental campaign was carried out at the Italian Aerospace Research Center (CIRA) to investigate the velocity field and turbulence characteristics at the inlet and exit of a novel subsonic nozzle configuration using hot-wire anemometry (HWA). The results offer a comprehensive description of the flow evolution downstream of the nozzle exit and a detailed characterization of the turbulence properties upstream of the nozzle. These measurements are of significant importance for validating numerical simulations and establishing accurate boundary conditions.