# Shear stress tensor profiles along freeze-out surface

The curves are also labelled by the grid sizes in numerical calculation. For example, ${\displaystyle 0.1-0.04}$ means ${\displaystyle \Delta x=\Delta y=0.1}$ fm, ${\displaystyle \Delta \tau =0.04}$ fm/c.
• full I-S eqn-(R&R): ${\displaystyle \Delta _{j}^{m}\Delta _{k}^{n}{\dot {\pi }}^{jk}=-{\frac {1}{\tau _{\pi }}}(\pi ^{mn}{-}2\eta \sigma ^{mn})+{\frac {1}{2}}\pi ^{mn}\left(5D(\ln T)-\partial _{k}u^{k}\right)}$
• full I-S eqn-(S&H):${\displaystyle \Delta _{j}^{m}\Delta _{k}^{n}{\dot {\pi }}^{jk}=-{\frac {1}{\tau _{\pi }}}(\pi ^{mn}{-}2\eta \sigma ^{mn})-{\frac {1}{2}}\pi ^{mn}{\frac {\eta T}{\tau _{\pi }}}d_{k}\left({\frac {\tau _{\pi }}{\eta T}}u^{k}\right)}$