Magdaleno Escar, Francesc XavierCasademunt i Viader, Jaume2011-07-072011-07-0720011539-3755https://hdl.handle.net/2445/18708We clarify the meaning of the results of Phys. Rev. E 60, R5013 (1999). We discuss the use and implications of periodic boundary conditions, as opposed to rigid-wall ones. We briefly argue that the solutions of the paper above are physically relevant as part of a more general issue, namely the possible generalization to dynamics, of the microscopic solvability scenario of selection.2 p.application/pdfeng(c) The American Physical Society, 2001Dinàmica de fluidsFluid dynamicsinfo:eu-repo/semantics/article175204info:eu-repo/semantics/openAccess