On the basis of computational fluid dynamics theory

the flow and heat transfer law of sinusoidal corrugated tube with different wave periods and peak heights are analyzed comparably by numerical simulation method of full model

so as to optimize the sinusoidal corrugated tube structure for heat transfer enhancement. The results indicate that

the existence of spiral secondary flow in the sinusoidal corrugated tube improves the influence of Reynolds number on heat transfer coefficient and furtherly enhances the related heat transfer performance. Under turbulence condition

the sinusoidal corrugated tube with smaller wave period and larger peak height has better heat transfer performance. Under the same conditions

changing wave period of the sinusoidal corrugated tube can make its average heat transfer coefficient 4.1 times of that of the smooth straight tube to the maximum

while changing peak height of the sinusoidal corrugated tube can make its average heat transfer coefficient 4.5 times of that of the smooth straight tube. Thus

during the practical engineering application

the secondary flow of the sinusoidal corrugated tube could be strengthened by reducing the wave period or increasing the peak height

so as to lower down its flow resistance and enhance its related transfer performance.