The Holub et al. (1992Holub et al. ( , 1993 phenomenological model for pressure drop and liquid holdup in trickle flow regime at atmospheric pressure was noted by Al-Dahhan and Dudukovic ´(1994) to systematically underpredict pressure drop at high pressure and high gas flow rates. In this study, the Holub et al. (1992, 1993) model has been extended to account for the interaction between the gas and liquid phases by incorporating the velocity and the shear slip factors between the phases. As a result, the prediction of pressure drop at the operating conditions of industrial interest (high pressure) has been improved noticeably without any significant loss in predictability of liquid holdup. The extended model and the comparison between its prediction and experimental high pressure and high gas flow rate data are presented and discussed.

Sesamol was used with furfurylamine, dehydroabietylamine, and stearylamine to prepare three fully‐bio‐based benzoxazines: S‐fa, S‐da, and S‐sa, respectively. Their structures were confirmed by Fourier transform infrared spectroscopy (FTIR), 1H‐NMR, and 13C‐NMR. FTIR and differential scanning calorimetry were performed to monitor the curing behaviors of S‐fa, S‐da, and S‐sa. The thermal stability of the corresponding polybenzoxazines was supported by thermogravimetric analysis, and all polymers showed high thermal stability. The limiting oxygen indexes of all three polybenzoxazines were higher than 30, suggestive of good flame retardancy. The use of polybenzoxazine for the corrosion protection of Q235 low‐carbon steel was also studied. The results of OCP curves and Tafel plots demonstrate that the polymer coatings provide good corrosion resistance and can be applied to this purpose. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 48255.

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A characteristic length scale and a time scale are proposed to describe the dynamic growth and departure process of bubbles. A correlation between bubble departure diameter and bubble growth time is established thereby, and a predication formula for bubble departure diameter is suggested by considering the analogue between nucleate boiling and forced convection. #

Green roofs are a sustainable, low-impact development technique. They can reduce peak stormwater runoff and runoff volume and improve the quality of runoff from individual buildings and developments, which can lower the risk of frequent urban flooding and improve the quality of receiving waters. Few studies have compared different types of green roof models under the same rainfall intensities; thus, in this study, the predictions of a non-linear storage reservoirs model, Storm Water Management Model (SWMM), and a physical process model (HYDRUS-1D) were discussed. Both models were compared against measured data obtained from a series of laboratory experiments, designed to represent different storm categories and rainfall events. It was concluded that the total runoff of the SWMM model is always less than that of HYDRUS-1D. The maximum flowrate of the SWMM model is more than that of HYDRUS-1D during all events.