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Cato edited Payam.tex
almost 11 years ago
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\item In \citet{2013PhRvE..87d2723R} page 5, second column, Payam uses dimensional analysis to justify a steady state approximation used in the paper: the time taken to establish the fluid velocity profile around a section of DNA must be much shorter than the time taken the DNA to move its own length.
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\begin{itemize}
\item I want to try to do a better job than Payam's scaling argument: what are the coefficients in the ``$\# \ll 1$'' relationship? This might be interesting because of a problem acknowledged in Payam's other paper:
that his predictions do not fit the experimental data.
\item Is there a mistake in the dimensional analysis? I think $t_{\rm h}\sim \ell/c_{\rm s}$ on physical grounds, but Payam says $t_{\rm h}\sim \ell^2\rho/\eta$ from dimensional analysis. Are these compatible?
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