BY : Dr S V Zhubrin, CHAM Ltd
DATE : November, 2000
UPDATED: May 2006
FOR : Demonstration case for PHOENICS 3.3.3 / 3.6.2
Shapemaker has been used to create the helical coil object and the case presented makes use of it for the situation when the rotation of a helix attached to the shaft pumps the fluid.
This case deals with the fluid flow driven by the tangential movement of screw rotor in a an open ended pipe creating the pumping effect.
The independent variables of the problem are the three components of cylindrical polar coordinate system, namely X, Y and Z.
The main dependent (solved for) variables are:
The rotation of the central rotor and the coils is imparted by setting a fixed angular velocity as the surface 'slide velocity' for these objects. The angular rotation speed chosen, 8.333 rad/s, gives a velocity of 1m/s, thus reproducing the original version 3.3 setup.
The plots show the distribution of velocity within the pipe.
Pictures are as follows :
Geometry
Velocity contours near the shaft
Velocity vectors near the shaft
Yet another velocity field
All model settings have been made in VR-Editor of PHOENICS 3.6.2
The relevant Q1 file can be inspected by clicking here.
svz / jcl