This erratum corrects errors in the originally published paper.

In Sec. 3.2, on page 041203-3, Eqs. (10g) and (10h) are corrected as follows:
$F1=[(λT12−λT22)/α2](−C1 cos 2θ+C2 sin 2θ)+(ζ2−ζ1)[C1 cos 4θ−C2 sin 4θ]$
(10g)
$F2=[(λT12−λT22)/α2](−C1 sin 2θ−C2 cos 2θ)+(ζ2−ζ1)[C1 sin 4θ+C2 cos 4θ]$
(10h)

In the “Nomenclature” section, on page 041203-7, wg,t is corrected as follows:

ωg,t = specific gravity of tube

In Appendix A, on page 041203-8, left column, line 1, “For a practical HEX, $(lT12+lT22)2−4a4<0$, so the homogeneous” is corrected as follows:

For a practical HEX, $(λT12+λT22)2−4α4<0$, so the homogeneous