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This paper presents an experimental investigation using acoustic emission (AE) technology to monitor sand transportation in two-phase flow. The initial investigation consisted of a preliminary experiment where a single sand particle was dropped from a height onto metal plates to provide a basis for monitoring particle impingement on metal pipes in two-phase or three-phase flow systems. Further investigations were undertaken on two phase (air-sand) flow in a horizontal pipe for varying Superficial Gas Velocities (VSG). The objective of this research programme is to develop a simple, non-invasive technique for monitoring of sand particle concentration levels in multi-phase flow conditions. The experimental findings show that AE absolute energy can be correlated with the size of sand particles, number of sand particles and VSG.

MONITORING SAND PARTICLES IN TWO-PHASE FLOW WITH ACOUSTIC EMISSION