<html><body><div style="color:#000; background-color:#fff; font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:16px"><div id="yui_3_16_0_1_1437847311836_57276">Hi,</div><div id="yui_3_16_0_1_1437847311836_57355">I want to reduce navier stokes to something like boundary layer equations.</div><div id="yui_3_16_0_1_1437847311836_57354">I want to keep all the term (3D), just reduce viscosity term to something line mu*d2u/dy2 <br></div><div dir="ltr">(omitting other derivatives). Would you help me where to start?</div><div id="yui_3_16_0_1_1437847311836_57386" dir="ltr"><br></div><div id="yui_3_16_0_1_1437847311836_57368" dir="ltr">Hamid<br></div></div></body></html>