vqdt-

Suppose we have a steel pipe with Dlt = 10, I% air bubbles, B1 =250,000 psi, and Bg = 500 psi. The Bg value of 500 psi assumes the system operating point pressure is 500 psia and slow (isothermal) pressure changes. [For rapid (adiabatic) changes Bg would be lAp= 700 psi.] The relative importance of the three terms in Eq. (4-49) is:

application and from designer to designer but typically might be about 75,000 psi. The concept of an effective or equivalent bulk modulus which combines all three compliance effects into one number can be defined from Eq. (4-48).