The optical fiber probe gas-holdup meter is a new logging tool, which can be used to measure the of oil-gas-water three-phase flow during production logging. In this paper, wavelet transform denoise measured signal probe. For threshold de-noising method, existing hard and soft functions have certain defects. So we propose denoising method with an improved function, use signal-to-noise ratio, ro...

Particle size reduction in spiral jet mills is induced by high velocity gas jets, causing interparticle and particle wall collisions leading to breakage. Despite extensive research on the design operational parameters, underlying mechanics of still poorly understood. Discrete Element Method Computational Fluid Dynamics are used here analyse fluid motions. A fast shearing dense bed formed wall, ...