The flow field of a radial neutrally buoyant turbulent jet discharged horizontally into a wavy environment has been investigated. A set of laser induced fluorescence (LIF) measurement was conducted to measure instantaneous surface elevation and jet centerline movement simultaneously. The measurement shows dynamic changes on jet oscillation due to waves motion. The pattern of jet oscillation due to waves was classified into three categories. A simple physical model was proposed to estimate the jet oscillation in the near field.
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