- **Main CFD Forum**
(*http://www.cfd-online.com/Forums/main/*)

- - **Reynolds number for flow over half cylinder?**
(*http://www.cfd-online.com/Forums/main/63921-reynolds-number-flow-over-half-cylinder.html*)

Reynolds number for flow over half cylinder?Hello :)
i am considering air flow over half the circumference of a horizontal cylinder..which is fixed.similar to this diagram: http://www.nurflugel.com/Nurflugel/H...y/Figure_1.gif the air velocity is 6.67 m/s and length of rod is 200 mm with diameter 32 mm..is the formula Re = UD/v still applicable..or should i divide by two :confused: i have another related question.. is there a way to directly calculate the thermal boundary layer thickness over this cylinder. for laminar flow over a flat plate the thermal boundary layer thickness is t=h * (Pr) ^ -0.333 h=5 * x * (Re)^ -0.5 h=hydrodynamic boundary layer thickness Pr- prandtl number Re-reynolds number x-distance. is there a way to have a similar formula for cylindrical co ordinates. i think it would require changing 'x' from cartesian to cylindrical co ordinates.but iv no idea how to go about it............ pls help. much appreciated. |

All times are GMT -4. The time now is 20:24. |