Numerical simulation and experimental study of flow field in axial flow fixed bed;
轴向流固定床内流场的数值模拟与实验验证
The patterns with axial flow and without axial flow were mainly studied.
主要研究了清水介质时无轴向流和有轴向流条件下流型的划分 ,并将无轴向流时的流型分成了 6种 :Couette层流 ,层流泰勒涡 ,层流波涡 ,层流调制波涡、湍流泰勒涡和湍流 ;有轴向流时的流型分成了 4种 :Couette层流、层流泰勒涡、湍流泰勒涡和完全湍流。
Using the estalished theory of eccentric annulus laminar helical flow of Binghamfluid, numeral simulation of the field of laminar axial flow of Bingham fluid in eccentricannulus is accomplished.
应用所建立的宾汉流体偏心环空螺旋流理论,对偏心环空中宾汉流体轴向流流场进行了数值模拟,使流场分析定量化,得到了速度及视粘度分布图像。
To these situations, study on Chang2 low permeable oilfield of Sai39 well district in Suijing oilfield has been conducted and the results show that when flowing time reaches three times of the starting time of radial flow, error of interpreting formation parameters and formation pres.
结果表明,当油井的流动时间达到3倍的地层径向流开始时间后,利用此时的压力数据,解释地层参数和地层压力,其结果的误差就会比较小,同时能较准确地判断边界类型。
The results show that when the time of shut-in pressure survey triples the occurrence time of radial flow,the error of well-testing results about the formation parameters and formation pressure gained by pressure data at this moment is smaller than 5%.
结果表明,当油井关井测压时间达到3倍地层径向流开始出现的时间后,利用此时的压力数据解释地层参数和地层压力,其结果的误差小于5%,同时能较准确地判断边界类型。
This paper introduces application of spherical and radial flow model in FMT wire line testing and puts forward a new method for verti- cal permeability estimation in homogeneous anisotropy formation.
介绍了球形流和径向流渗流模型在FMT地层测试中的应用,提出了一种在均质各向异性地层中确定水平渗透率和垂直渗透率的新方法,并用现场实例进行了验证,其计算结果和岩心分析渗透率基本吻合。
Based on the theoretical analysis and case study of metal flow in axial direction during radial rolling process of welding neck flange,it is clarified that axial flow of metal and the volume of flow is depended on the section shapes between the blank and the workpiece.
通过对长颈法兰径向轧制过程中金属沿轴向的流动规律进行理论分析和实例计算,提出了径向轧制过程中存在着轴向流动以及流动量取决于环坯与成品截面形状的观点,指出了传统环坯设计方法存在的问题。
Differential quadrature method is used to deduce the eigen-equation of simply supported viscoelastic cylinder constituted by Kelvin s model in axial flow.
采用微分求积法,推导了轴向流动中简支Kelvin模型粘弹性圆柱体的特征方程,给出了在不同无量纲延滞时间和质量比下前三阶无量纲复频率的实部和虚部随无量纲流动速度变化的曲线图,并得到了在不同无量纲延滞时间下,圆柱体发生发散失稳及耦合模态颤振的无量纲速度的范围。
The axial flow in a pipe of the fractional generalized second order fluid is studied.
研究了分数阶广义二阶流体的管内轴向流动问题 。
Because radial flow reactor has such merits as shorter flow path,lower resistance,smaller catalyst granularity and larger space velocity permitted,it has been abroad used in oil and chemical industry.
径向流动反应器具有流道短、阻力小、可使用小颗粒催化剂、空速大等优点 ,已在石油与化学工业中推广应用。