Numerical Research on the Heat Transfer Properties of Pulsating Flow Around the Vibrating Tube

The heat transfer properties of pulsating flow around the tube with simple harmonic vibration were analyzed. The effect of the angle theta between the flow direction and the tube vibrating direction, which changes from 0 to 150 degrees, on heat transfer properties was numerically investigated by the dynamic mesh technology of FLUENT. The results showed that the transient surface heat transfer coefficient decreases with increasing theta when amplitudes of pulsating flow or vibrating tube increase. Comparing with the still tube, the angle between the temperature gradient and the velocity vector is smaller when the tube vibrates along different directions, hence the field synergy performance is better, and the heat transfer performance is more enhanced.