Numerical simulation and experimental study of flow field in axial flow fixed bed;

The patterns with axial flow and without axial flow were mainly studied.

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.

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.

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%.

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.

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.

Differential quadrature method is used to deduce the eigen-equation of simply supported viscoelastic cylinder constituted by Kelvin s model in axial flow.

The axial flow in a pipe of the fractional generalized second order fluid is studied.

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.