Abstract
A formula that predicts the drag coefficient C D for a natural, irregularly shaped particle is presented. Particle shape is defined as a combination of particle flattening (measured by the Corey Shape Factor CSF) and particle rounding (measured by the Powers Index P). The formula is tested in a series of settling experiments and its validity seems to be very high. It appears that natural particles can have more than one terminal fall velocity (in the same fluid). Which one will be reached in a particular fall is dependent on the initial orientation of the particle once the settling process has started. A set of C D-Re curves for 56 different combinations of flattening and rounding degrees is given. This allows one to find very approximative values for the drag coefficient of a particle with any arbitrary shape.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
