can you count the letter "o" in:
abstract : we present high resolution numerical simulations of incompressible two-dimensional flows in tube bundles, staggered or in-line, as encountered in heat exchangers or chemical reactors. we study the time evolution of several flows in arrays of cylinders, squares and double-cruciform shaped tubes at a reynolds number of 200. the numerical scheme is either based on adaptive wavelet or fourier pseudo-spectral space discretization with adaptive time stepping. a volume penalization method is used to impose no-slip boundary conditions on the tubes. lift and drag coefficients for the different geometries of tube bundles are compared and perspectives for fluid–structure interaction are given.

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There are 43 "o"s in the text you provided.
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