Quantitative 10–50 kHz X-ray radiography of liquid spray distributions using a rotating-anode tube source. (December 2018)

• Record Type: Journal Article
• Authors: Halls, B.R.; Gord, J.R.; Schultz, L.E.; Slowman, W.C.; Lightfoot, M.D.A.; Roy, S.; Meyer, T.R.
• Is Part Of: International journal of multiphase flow. Volume 109(2018)
• Page Start: 123
• Page End: 130
• Publication Date: 2018-12
• Subjects: Multiphase flow -- Periodicals; Écoulement polyphasique -- Périodiques; Multiphase flow; Periodicals; 620.1064
• DOI: 10.1016/j.ijmultiphaseflow.2018.07.014
• Languages: English
• ISSNs: 0301-9322

Abstract

Highlights: High-speed (10–50 kHz) quantitative cinematographic X-ray radiographic imaging. Employed rotating anode portable X-ray source and high-speed intensified camera. Accounted for variable attenuation of broadband X-rays in spray mass distributions. Abstract: The feasibility of high-speed (10–50 kHz) cinematographic X-ray radiography of liquid sprays with correlated time sequences of thousands of images is demonstrated utilizing a high-flux, rotating-anode tube source. Quantitative path-integrated liquid distributions are acquired in an impinging jet spray by modeling the X-ray source spectrum, liquid attenuation coefficients, and scintillator absorption spectrum to account for beam hardening effects. The image contrast and signal-to-noise ratio are optimized for varying amounts of a contrast enhancing agent (potassium iodide) and X-ray source voltage. Measurement accuracy and spatial resolution are evaluated, along with applicability for interrogating primary jet break up in optically complex sprays.