Pattern conversion prediction about low water content water-oil flow based on terahertz time domain spectroscopy

Shaohua Chen; Wei Wang; Aifan Wang; Yunfei Wei; He Hao; Shining Sun; Kun Zhao

doi:10.1117/12.2210796

5 November 2015 Pattern conversion prediction about low water content water-oil flow based on terahertz time domain spectroscopy

Shaohua Chen, Wei Wang, Aifan Wang, Yunfei Wei, He Hao, Shining Sun, Kun Zhao

Author Affiliations +

Proceedings Volume 9795, Selected Papers of the Photoelectronic Technology Committee Conferences held June–July 2015; 979537 (2015) https://doi.org/10.1117/12.2210796
Event: Selected Proceedings of the Photoelectronic Technology Committee Conferences held June-July 2015, 2015, Hefei, Suzhou, and Harbin, China

Abstract

This paper aims at presenting an approach for the experimental flow pattern conversion prediction. The water-diesel mixture flowed in the horizontal square tube with water contents of 0, 0.7%, 1.5%, 2.0% and 2.3%, respectively. After the mixture flowed steadily, the sample cell, in horizontal direction, was transmitted by the terahertz radiation and the terahertz time domain spectra were obtained for all the water-diesel mixtures. There is a critical velocity VT to all of the mixtures. If the flow rate is slower than VT, the mixtures flow with water bubbly pattern, however, the mixtures will flow with the water foggy pattern and the loss of the THz ray increased rapidly when the rate is faster than VT. Consequently, the mixture pattern conversion can be predicted by detecting the turning point of the THz ray loss.

Citation Download Citation

Shaohua Chen, Wei Wang, Aifan Wang, Yunfei Wei, He Hao, Shining Sun, and Kun Zhao "Pattern conversion prediction about low water content water-oil flow based on terahertz time domain spectroscopy", Proc. SPIE 9795, Selected Papers of the Photoelectronic Technology Committee Conferences held June–July 2015, 979537 (5 November 2015); https://doi.org/10.1117/12.2210796

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