tail_velocity.m

function F = Tail_velocity(f, L, b, n, a, d)
% Calculates tail velcotity analytically (including the head)

F = ((2.*f.*(pi.^2).*(b.^2))./L)...
    .*(1./(1+((4.*(pi.^2).*(b.^2))./(L.^2))...
    -((1+((2.*(pi.^2).*(b.^2))./L.^2)).^(1./2))...
    .*((3.*a)./(n.*L)).*(log10(d./(2.*L))+1)));

end