Mass flow rate of granular material flowing from tilted bins

• A discharge rate correlation for orifices from tilted bins is proposed.
• The correlation is a function of the tilt angle, hole size and the wall thickness.
• The mass flow rate embraces the case of null sidewall thickness.
• The correlation agrees very well with experimental data for beach sand and granulated sugar.

We report experiments performed to describe the behavior of the experimental mass flow rate of cohesionless granular material, mβexpt, through circular orifices of diameter D made on sidewalls of tilted bins. In such experiments, the influence of the wall thickness of the bin, w, and the tilt angle with respect to the vertical, β, were also regarded. The experimental measurements, using beach sand and granulated sugar, yield a linear correlation among mβexpt and a theoretical piecewise correlation of the mass flow rate, mβ which is valid for the overall range of values of β.

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