Radioisotope investigations of compound two-phase flows in an open channel

• We analyze of two-phase flow by the gamma-ray and ultrasonic propagation.
• For investigations we apply only sealed radioactive materials.
• The velocity of the both solid and liquid phases were recorded.
• The sedimentation of solid particles in a hydrotransport could be observed.

The paper presents possibilities for use of gamma-ray sealed sources for analysis of two-phase compound flows in an open channel as an example of a mud slurry suspension hydrotransport investigation. The objective of the research was to model the Flysch Carpathian formation as a result of the suspension stream and measurements of slurry flow rate. Due to the specific properties of muds the gamma-ray absorption and ultrasonic methods were used for flow measuring and the correlation analysis was applied to the recorded signals. The constructed testing installation was described in details and examples of measurement results were given. The obtained data allow the vertical solid particle velocity distribution in a channel to be determined. That information facilitated with the additional photo documentation enables the forming geological structures to be identified.