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APPENDIX E. Flow straightener design
1. Fig.E.1 shows the design of flow straightener of A type that is manufac-
tured according to the following rules:
a) the thickness of the flow straightener board is equal to the diameter of
the holes; depending on the material, the board may consist of one or
more plates;
b) all hole diameters in the board are the same;
c) holes are more densely distributed in the center of the board and rarer
in the periphery;
d) holes on the flow inlet side are chamfered.
D
– internal diameter of the pipeline where the flow straightener is inserted.
Fig.E.1. Design of flow straightener of A type
2. To reduce the weight and amount of material, the flow straightener of B
type (Fig.E.2) can be used according to the following rules:
a) tubes are inserted into the board holes;
b) length of the tubes is equal to the diameter of the tubes;
c) all hole diameters in the board are the same;
d) holes are more densely distributed in the center of the board and rarer
in the periphery;
e) holes on the flow inlet side are chamfered.
