The Effect of Heat Transfer on the Steady Flow Through a Poppet Valve 670479

A study was made to determine the effect of heat transfer from the backface of a poppet intake valve on the flow rate through the valve. All tests were made under steady flow conditions.The results show that for the same lift and same pressure drop across the valve, the flow rate through a hot valve is less than through a cold valve. This effect increases almost linearly with the heat transfer rate and decreases rapidly with lift. The results also show that the effective flow area is independent of pressure drop through the valve.A correlation of heat transfer from the back of the valve surface to the flowing air shows that the Nusselt number varies as the 1.27 power of the Reynolds number.


Subscribers can view annotate, and download all of SAE's content. Learn More »


Members save up to 43% off list price.
Login to see discount.
Special Offer: Purchase more aerospace standards and aerospace material specifications and save! AeroPaks off a customized subscription plan that lets you pay for just the documents that you need, when you need them.