喷流

Based on the study of gas solid flow field in blowpipe of BF with oygen enriched PCI, the oxygen and coal concentration distribution inside the blowpipe were simulated and discussed, including the influence of position and inserting angle of the oxygen coal lance, the pattern of the oxygen enriched jet, as well as grain size of the coal.

在对高炉局部富氧喷煤直吹管内气固两相流流场研究的基础上，对直吹管内氧和煤粉的浓度场进行了数值研究，包括氧-煤喷枪的插入角度和枪位、局部富氧射流的漩流数以及煤粉粒度的影响。

On the basis of slip-diffusion model of multiphase flow, a three-dimensional mathematical model of gas-particle flow in blowpipe has been developed and debugged to calculate the gas-solid two phases flow, including gas velocity and particle velocity inside the blowpipe.

运用多相流的拟流体模型建立了高炉局部富氧喷煤直吹管内气粉两相流动的数学模型，对气粉两相流场进行了数值研究，探讨了气相和煤粉的速度分布规律及其影响因素，其中包括氧-煤喷枪的结构、漩流数和富氧率等。

The simulation results show that the flow field of cohesive particles in the spouted bed is different from the general flow field in spouted bed. There is no fountain at the surface of the bed.

模拟结果表明，喷动床内粘附性颗粒气固两相流场与一般的喷动床流场不同，仅有喷射区和环隙区，无喷泉区。

The interactions between gas and particles were considered by a two-way coupling method.The motion of particles in the spouted bed with complex geometry was solved by combining DEM and boundary element method.The minimal spoute...

通过采用BEM+DEM-CFD相结合的方法进行模拟计算，得到了喷动床的最小喷动速度，研究了不同表观气速下床内的流型，得到了二维导流管喷动床的床层压降与表观气速的关系，统计分析了喷射区、环隙区内颗粒的运动速度和相应的空隙率，全面地描述了二维导流管喷动床内的气固流动特征。

The simulation results demonstrated that flow field in sprayed calciner is mostly the symmetrical sprayed flow.

结果显示：喷腾分解炉内的流场基本为喷射流，且流场基本对称。

M/s. The following dimensionless relationships were obtained: Sh=2+0.073Re〓Sc〓〓〓 The desulphurization process by powder injection and blowing in RH refining of molten steel and its mechanism have been considered and analyzed. Based on the tworesistance mass transfer theory and the mass balance of sulphur in the system, a kinetic model for the process has been developed. The related parameters of the model have been reasonably determined. Modeling and calculations for the process by injecting and blowing the lime based powder flux under the assumed operating modes in a RH degasser of 300t capacity have been carried out using the model.

考虑颗粒与液流的相对速度，RH—PTB条件下熔池传质特性可由下式表征： Sh=2+0.073Re〓Sc〓考虑紊流中脉动速度引起的能量耗散，RH—PTB条件下熔池传质过程服从如下关系：〓将粉剂颗粒与钢液间的传质当作刚性的气泡与钢液间的传质处理，对RH—PTB过程有：〓考察和分析了RH喷粉脱硫过程及机理，基于双重阻力传质理论和体系内硫的质量衡算，建立了RH喷粉脱硫过程的动力学模型，确定了模型各有关参数，包括各传质系数和脱硫处理过程中钢液内参与脱硫反应的粉剂量等。

After the function of cutting lashing and scraping produced by the strong force and then becoming granule and being scatted a part of the disposed liquid will spurt out from the spurting mouth at the upper of the container .

部分由具有高转速的独特的轮机与具有放射状折流板之作用的定子的被处理液就任由高速回转中的轮械与定子之间所产生的强力的剪断，冲击，刮流等过程，而被细粒化及分散，而由上方之喷出口往上喷出。

After the functin of cutting lashing and scraping produced by the strong force and then becoming granule and being scatted a part of the disposed liquid will spurt out from the spurting mouth at the upper of the container .

部分由具有高转速的独特的轮机与具有放射状折流板之作用的定子的被处理液就任由高速回转中的轮械与定子之间所产生的强力的剪断，冲击，刮流等过程，而被细粒化及分散，而由上方之喷出口往上喷出。

The present objective is to evaluate the possibility of installing pump jet on fishing vessels, including simulation of flow field near the pump jet, comparison with traditional propeller on issues of tangling, and life-cycle cost for typical Taiwanese fishing methods.

本研究目标是评估泵喷推进器用於渔船上的可行性，包括泵喷推进器出入口流场模拟、泵喷推进器与传统螺桨绞缠性能的比较、台湾渔船使用情形下成本效益之评估，也针对一般的台湾渔船，进行改用泵喷推进器的初步线型与安装设计并比较其静水性能与稳度影响。

When the swirl variable device is part-opened, because swirl has some effect on the second injection, second injection timing has distinctly effect on fuel consumption, and the fuel consumption change fluctuantly with twice injection timing. When the tumble variable device is adopted, second injection timing also has effect on fuel consumption, but there is only one point that the fuel consumption is lowest. When the load is bigger, the second injection point where the fuel consumption is lowest is earlier than the smaller load.

在可变涡流结构中，当阀片处于非全开状态时，由于涡流运动对二次喷油的作用，二次喷油正时对发动机的比油耗存在明显影响，发动机比油耗随喷油正时改变呈较明显的波动状；在可变滚流结构中，二次喷油正时对发动机比油耗同样存在影响，但最低油耗点只有一个，当负荷较大时，最低比油耗所对应的喷油正时要更早一些。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。