Theoretical Research on Effect of Rolling Motion on Turbulent Flow

The turbulent flow in rectangular tube at rolling motion was investigated theoretically with Fluent code. The effects of several turbulent models and parameters on the flow were analyzed. At rolling motion, the velocity profile in tube center is more averaged. But the velocity gradient and frictional resistance coefficient on the wall increase. The effect of rolling motion on the turbulent flow can be depressed by the tube wall. At pitching motion, the velocity contour in small length-width ratio tube is in a dumbbell shape. As to the turbulent flow in the paper, the frictional resistance coefficient at rolling motion is in inverse ratio with the power of 0.47 of Reynolds number.