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| 1 | Concentration profile of jet gas in the feed injection zone of a FCC riser显示文摘喷气气体的集中侧面被使用一种氢踪迹技术在一个冷模型的 FCC 起床人的 feed 注射地区调查。试验性的结果表明喷气气体集中侧面的四种类型能被用来描述在喷气气体之间混合并且预先提起在 feed 注射地区的气体。四种类型是为弱混合,为完整的混合的为中等混合的模糊塑造 M 的侧面,为强壮的混合的锋利的侧面,和抛物线的侧面的不同塑造 M 的侧面。为起始、完整的混合还原剂的区域的高度当减少时喷气气体速度或增加预先提起气体速度。而且,动量比率, Mj/Mr,(在 Mj 是喷气气体的动量的地方,先生是混合动量预先提起煤气、稳固的粒子) 被介绍在喷气气体集中分发上描述煤气的稳固的物理性质,操作条件,和设备配置的效果。为区域的高度起始、完整在喷气气体之间混合并且预先提起气体被发现当时,是 0 0.375 和 0.375 0.675 m Mj/Mr <
0.29 , 0.375 0.675 和 1.075 1.375 m 什么时候 Mj/Mr >
0.54 ,和 0 0.375 和 0.675 1.075 m 什么时候在 0.29 和 0.54 之间的 Mj/Mr ,分别地。 | Chenglin E Yiping Fan Kai Zhang Hu Zhang | 2008 | Progress in Natural Science:Materials International2008，18，10： | 6 |
| 2 | Discrete Particle Simulation of Gas-Solid Flow in Air-Blowing Seed Metering Device显示文摘In this paper,the gas and seed flow characters in the air-blowing seed metering device are investigated by using the coupled computational fluid dynamics and discrete element method(CFD-DEM)in three dimensions(3D).The method of establishing boundary model based on the computer-aided design(CAD)drawing,has been used to build the boundary model of seed metering device.The 3D laser scanning technique and multi-element method are adopted to establish the particle model.Through a combined numerical and experimental effort,using 3D CFD-DEM software,which is based on the in-house codes,the mechanisms governing the gas and solid dynamic behaviors in the seed metering device have been studied.The gas velocity field and the effect of different rotational speeds and air pressures on the seeding performance and particle velocity have been studied,similar agreements between numerical and experimental results are gained.This reveals that the 3D CFD-DEM model established is able to predict the performance of the air-blowing seed metering device.It can be used to design and optimize the air-blowing seed metering device and other similar agriculture devices. | Zhengquan Li Pei Zhang Yongchang Sun Chenglin Zheng Liang Xu Dianyu E | 2021 | Computer Modeling in Engineering & Sciences2021，，6： | 2 |
| 3 | Research Progress on Genetic Diversity of Snap Bean(Phaseolus vulgaris)Germplasm Resources in China显示文摘In this paper,we reviewed the classification,genetic diversity and planting and application of snap bean(Phaseolus vulgaris)germplasm resources in China at the present stage were,analyzed the bottleneck of snap bean research in China,and prospected the development trend of snap bean germplasm research in the future.In the opportunity of the completion of the whole genome sequencing of kidney bean and the construction of high-density genetic map,it is necessary to strengthen the application of ISSR,SNP and other molecular methods and high-throughput proteomics to the study on the specific breeding of snap bean. | Hongbo GUAN Shuliang CHEN Chenglin E Xishan WANG Jing XIAO | 2022 | Agricultural Biotechnology2022，11，1： | 0 |
| 4 | Characteristics of flow and liquid distribution in a gas-liquid vortex separator with multi spiral arms显示文摘Fischer-Tropsch(F-T)synthesis is an important route to achieve the clean fuel production.The perfor-mance of gas-liquid separation equipment involving in the progressive condensation and separation of light and heavy hydrocarbons in the oil-gas products has become a bottleneck restricting the smooth operation of the F-T process.In order to remove the bottleneck,a gas-liquid vortex separator with simple structure,low pressure drop and big separation capacity was designed to achieve the efficient separation between gas and droplets for a long period.The RSM(Reynolds Stress Model)and DPM(Discrete Phase Method)are employed to simulate the flow characteristics and liquid distribution in the separator.The results show that the separation efficiency is influenced by the flow field and liquid phase concentration in the annular zone.The transverse vortex at the top of spiral arm entrains the droplets with small diam-eter into the upper annular zone.The entrained droplets rotate upward at an angle of about 37.4°.The screw pitch between neighbor liquid threads is about 0.3 m.There is a top liquid ring in the top of annular zone,where the higher is the liquid phase concentration,the lower is the separation efficiency.It is found that by changing the operating condition and the annular zone height the vortex can be strengthened but not enlarged by the inlet velocity.The screw pitch is not affected by both inlet velocity and annular zone height.The liquid phase concentration in the top liquid ring decreases with both the increases of inlet velocity and annular zone height.The total pressure drop is almost not affected by the annular zone height but is obviously affected by the inlet velocity.When the height of annular zone is more than 940 mm,the separation efficiency is not changed.Therefore,the annular zone height of 940 mm is thought to be the most economical design. | Xiuying Yao Peng Zuo Chunxi Lu Chenglin E Mengxi Liu | 2022 | Particuology2022，20，9： | 0 |
| 5 | Effects of Cultivation Density,Fertilizer Type and Fertilizer Amount on Yield of Jicaidou No.1显示文摘[Objectives]This study was conducted to explore the effects of planting density,fertilizer type and fertilizer amount on yield of Jicaidou No.1.[Methods]Three treatments of plant spacing,fertilizer type and fertilizer amount of Jicaidou No.1 were set up respectively to screen out the best combination mode.[Results]The best combination mode was:plant spacing 50 cm,fertilizer amount 1800 kg/hm^(2),and any one of the two fertilizers,as the difference between the two kinds of fertilizers was not significant.[Conclusions]This study provides a scientific basis for the standardized cultivation of kidney beans in Jilin Province. | Xishan WANG Shuliang CHEN Chenglin E Hongbo GUAN Jing XIAO | 2022 | Agricultural Biotechnology2022，11，6： | 0 |
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