TY - JOUR
T1 - Some experiments on the secondary flow in pipe bends
JF - Proceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences
JO - Proc R Soc Lond A Math Phys Sci
SP - 335
LP - 346
M3 - 10.1098/rspa.1956.0038
VL - 234
IS - 1198
AU -
Y1 - 1956/02/21
UR - http://rspa.royalsocietypublishing.org/content/234/1198/335.abstract
N2 - Secondary vorticity in the direction of flow is developed after fluid with a non-uniform velocity passes through a bend. The secondary flow may be increased or decreased by reversal of the radius of curvature of the bend, depending on the location of the reversal. The general behaviour of the secondary flow in a bend in which the radius of curvature is repeatedly reversed is analyzed by assuming the centre line of the bend is a sine curve. The resulting differential equation describing the flow is non-linear, and a variety of solutions are obtained for different entry conditions. These solutions are compared with experimental results obtained from observations of the air flow through various configurations of pipe.
ER -