Beckmann, Herbert K.2018-12-182018-12-181981Fahrenthold, Eric P.. "Unsteady flow in a gas bubble plume." (1981) Master’s Thesis, Rice University. <a href="https://hdl.handle.net/1911/104895">https://hdl.handle.net/1911/104895</a>.https://hdl.handle.net/1911/104895Text includes handwritten formulasThe characteristics of a gas bubble plume produced by the discharge of gas from a submerged orifice at high flowrates is investigated. Flow of the gas and liquid mixture into the plume has been found to develop pulsations at high gas flowrates, resulting in a plume structure different from that produced by uniform bubble flow. The plume is modeled as a column of gas bubble "clouds." The frequencies of the flow pulsations in the plume are obtained by evaluation of the forces acting on a bubble cloud forming at the discharge nozzle. The vertical current in the plume is investigated by consideration of the wake produced by bodies of revolution traveling in line. Expressions for the drag force on cylinders (two-dimensional), spheres, and disks arranged in line are determined. Available experimental data on flow fluctuations in gas bubble plumes and drag forces on cylinders, spheres, and disks arranged in line are used to evaluate the derived expressions.50 ppengCopyright is held by the author, unless otherwise indicated. Permission to reuse, publish, or reproduce the work beyond the bounds of fair use or other exemptions to copyright law must be obtained from the copyright holder.Unsteady flow in a gas bubble plumeThesisRICE2542reformatted digitalTHESIS M.E. 1981 FAHRENTHOLD