THE SPEED OF SOUND IN TWO-PHASE FLOWS UNDER THE CONDITION OF VELOCITY-EQUILIBRIUM BETWEEN PHASES

Under the condition of velocity-equilibrium between phases, a general expression for the speed of sound in two-phase flows without phase change has been obtained. After introducing an adiabatic or thermo-equilibrium assumption between phases, the expression reduces to a particular expression for the complete or partial equilibrium speed of sound. Various expressions for the velocity-equilibrium speed of sound in two-phase flows published in literature can be derived from the general expression as special ex...