Quantitative imaging of single-shot liquid distributions in sprays using broadband flash x-ray radiography

Journal Article · Thu Dec 01 04:00:00 EST 2016 · International Journal of Multiphase Flow

DOI:https://doi.org/10.1016/j.ijmultiphaseflow.2016.09.007· OSTI ID:1377889

Halls, B. R.; Roy, S.; Gord, J. R.; Kastengren, A. L.; Meyer, T. R.

Flash x-ray radiography is used to capture quantitative, two-dimensional line-of-sight averaged, single-shot liquid distribution measurements in impinging jet sprays. The accuracy of utilizing broadband x-ray radiation from compact flash tube sources is investigated for a range of conditions by comparing the data with radiographic high-speed measurements from a narrowband, high-intensity synchrotron x-ray facility at the Advanced Photon Source (APS) of Argonne National Laboratory. The path length of the liquid jets is varied to evaluate the effects of energy dependent x-ray attenuation, also known as spectral beam hardening. The spatial liquid distributions from flash x-ray and synchrotron-based radiography are compared, along with spectral characteristics using Taylor’s hypothesis. The results indicate that quantitative, single-shot imaging of liquid distributions can be achieved using broadband x-ray sources with nanosecond temporal resolution. Practical considerations for optimizing the imaging system performance are discussed, including the coupled effects of x-ray bandwidth, contrast, sensitivity, spatial resolution, temporal resolution, and spectral beam hardening.

• Research Organization: Argonne National Laboratory (ANL)
• Sponsoring Organization: USDOE Office of Science - Office of Basic Energy Sciences; Army Research Office; Air Force Research Laboratory (AFRL)
• DOE Contract Number: AC02-06CH11357
• OSTI ID: 1377889
• Journal Information: International Journal of Multiphase Flow, Journal Name: International Journal of Multiphase Flow Journal Issue: C Vol. 87; ISSN 0301-9322
• Publisher: Elsevier
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
flash x-ray
impinging jet
liquid disruption
spray imaging
synchrotron radiation
x-ray radiography