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28 Nov 2013: J. Fluid Mech. (2013), vol. 737, pp. 205–231. c Cambridge University Press 2013 205doi:10.1017/jfm.2013.559. Stability of columnar convection in a porousmedium. Duncan R. Hewitt1,†, Jerome A. Neufeld1,2,3 and John R. Lister1. 1Institute of

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19 Oct 2013: Another importantwave activity measure is given by the pseudomomentum vector,. p = kA =h′ u′. ... Because of the ray-invariance of absolute frequency we have that |kA| = |kB | asympto-tically.

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19 Oct 2013: iσζ̂ kA sinh kh = 0. and from the second (pressure) (). gζ̂ iσA cosh kh = 0. Regarding these as a system of two linear algebraic equations for the two unknown constants ζ̂

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19 Oct 2013: GRAVITY WAVE GENERATION BY VORTICAL FLOWS. IN A ROTATING FRAME. Rupert Ford. Churchill College Cambridge. A dissertation sublnitted for the degree of Doctor of Philosophy. at the University of Cambridge. October, 1993. To my grandparents. Margaret

19 Oct 2013: GRAVITY WAVE GENERATION BY VORTICAL FLOWS. IN A ROTATING FRAME. Rupert Ford. Churchill College Cambridge. A dissertation sublnitted for the degree of Doctor of Philosophy. at the University of Cambridge. October, 1993. To my grandparents. Margaret

4 Oct 2013: if ψ = 0at r = a then Rnk(a) = Jn(ka) = 0 so for each n, ka = kni with i = 1, 2,.

4 Oct 2013: Its FT is easy to calculate:. f̃(k) =. aaeikx dx =. aa. cos(kx) dx =2 sin(ka). k. (41). so by the Fourier inversion theorem we get. ... 1. π. eikxsin ka. kdk =. {1 |x| < a,0 |x| > a.