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Jianhua Liu,Haihui Pu,Dejin Yin,Bin Gao,Hongyue Gao,Haitao Dai 한국물리학회 2010 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.56 No.4
An analytical method was applied for quantitative determinations of the initial rate coefficients of diffusion and reaction for a photo-curable recipe in holographic photo-polymerization. The results showed that the initial diffusion rate kept within small discrepancy despite an order of magnitude difference in the curing light power, while corresponding differences were found for the decay constants of diffusion and reaction in the curing process. Polymerization kinetics was analyzed for both curing and post curing processes.
Improved CEEMDAN-based aero-engine gas-path parameter forecasting using SCINet
Liuxin Song,Haihui Wang 대한기계학회 2023 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.37 No.3
Accurate gas-path parameter forecasting is very important for normal operations of aero-engines. In this study, the sample convolution and interaction network (SCINet), which is a variant of the temporal convolutional network, is applied to the forecasting of gas-path parameters for the first time. A new model, namely CEEMDAN-SCINet, is developed by improving SCINet based on complete ensemble empirical mode decomposition with adaptive noise (CEEMDAN). CEEMDAN-SCINet solves the problems of future "unknown" data involved in prediction and high computational complexity of traditional decomposition-based forecasting models. SCINet and CEEMDAN-SCINet are compared with three typical deep learning forecasting models on aero-engine gas-path parameter data provided by a laboratory in China. The experimental results indicate that SCINet significantly improves the accuracy and stability of single-step and multi-step forecasting for aero-engine gas-path parameters, and that the forecasting of CEEMDAN-SCINet outperforms that of SCINet. Therefore, SCINet and CEEMDANSCINet offer broad application prospects for aero-engine parameter forecasting.
Guolan Dou,Haihui Xin,Deming Wang,Botao Qin,Xiaoxing Zhong 한국화학공학회 2014 Korean Journal of Chemical Engineering Vol.31 No.5
In situ series diffuse reflectance FTIR was used to study the effects of poly(ethylene glycol) as a potentialchemical additive inhibiting coal oxidation process at low temperatures. Two coals with different volatile content and,different ash percentages were examined following treatment with 5 wt% poly(ethylene glycol) 200. The surfaces ofsamples both with and without the additive were analyzed at temperature up to 200 oC in air using in situ diffuse reflectanceFTIR. The results showed that poly(ethylene glycol) 200 is capable of inhibiting the oxidation of aliphaticmoieties such as methyl and methylene groups, and also reducing the quantity of surface hydroxyl groups through reactionsthat form more stable ether linkages, thus improving the thermal stability of the coal. A mechanism by whichthe additive interacts with the coal surfaces is proposed.
Xuwei He,Hongfu Fan,Fei Ni,Haihui Chen,Zhongwei Wu 보안공학연구지원센터 2016 International Journal of Smart Home Vol.10 No.1
Although started late, the development of ASP flooding technology in China was rapid. With the spread of the field test of ASP flooding, the effect of the emulsifying property of the composite system during the process of seepage on the oil displacement efficiency has gradually become the problem that people are concerning. In this paper, taking Jing-11 fault block reservoir in Huabei Oil Field as the research object, the influence rule of alkali, surfactant and polymer on the stability of the crude oil emulsion was inspected through indoor experiment. Besides, on the basis of the controlling variables method and under the circumstance of other conditions remains unchanged, the simulated displacement experiment was conducted using the physical model for ASP system of emulsion type and non-emulsion type surfactant respectively. It is proved that the emulsifying capacity of ASP flooding has significant effect on improving the oil displacement efficiency.