Nitric oxide molecular tagging velocimetry of a free-flight model in a reflected shock tunnel.

• Tác giả: K A Daniel, E R Jans, S P Kearney, K P Lynch
• Ngôn ngữ: eng
• Thông tin xuất bản: United States : Optics letters , 2025
• Bộ sưu tập: NCBI
• ID: 707367

Tóm tắt

Nitric oxide molecular tagging velocimetry (NO MTV) is used to characterize the wake behind a free-flight spherical model in the test section of a free-piston reflected shock tunnel using a burst-mode laser operated at 100 kHz. A novel (to our knowledge) multi-delay timing scheme was implemented to measure velocity in a varying collisional environment in the wake of the free-flight model. Four simultaneous velocity profiles were measured in the wake of the model from -600 to 3600 m/s for flow enthalpies of 10.3 and 12.0 MJ/kg. The measured velocity distributions show good agreement when compared to computational fluid dynamics (CFD) modeling.