*********************************
There is now a CONTENT FREEZE for Mercury while we switch to a new platform. It began on Friday, March 10 at 6pm and will end on Wednesday, March 15 at noon. No new content can be created during this time, but all material in the system as of the beginning of the freeze will be migrated to the new platform, including users and groups. Functionally the new site is identical to the old one. webteam@gatech.edu
*********************************
a research presentation by
and
a research presentation by
Abstract: Achyut Panchal
Injected fuel in a typical liquid fuel propulsion system undergoes through multiple physical processes such as cavitation, breakup, atomization, dispersion, evaporation, and finally reaction. These processes involve a wide range of length/time scales, length scales ranging approximately from a couple of nanometers to a few 100 millimeters, making their simulations challenging. In order to enable such computations, the spray is modeled as point particles, certain empirical models are used, and either Eulerian-Eulerian (EE) or Eulerian-Lagrangian (EL) methods are employed to compute their evolution. However, this approach is only valid in the dilute regimes, and cannot account for the near-injector physics. We present a hybrid EE-EL strategy in order to extend the previous approaches and account for non-zero volume fractions as well as nozzling terms when the spray is dense. This method employs the EE formulation in dense regimes, and later transitions to the EL formulation for dilute regimes, the transition being based on the local volume fraction. We present some applications and results of the dilute spray modeling approach, and then employ the new hybrid method for canonical and realistic test problems to verify, validate, and quantify its effectiveness.
Abstract: Marc Canellas
In Spring 2016, the Georgia Tech Graduate Student Government Association completed the first-ever graduate student experience survey conducted at Georgia Tech and the most comprehensive graduate student experience survey conducted at any major university in the United States. Over 3,028 of the 6,499 graduate students on-campus completed the survey (47%) with at least 30% of the graduate students in every school completing the survey. The survey asked questions regarding demographics, overall experience, program support, advising and mentoring, coursework and degree progress, financial considerations, university resources, student fees, and student well-being and stress. The broad results provide a general answer to the question, “What do graduate students want?” The results suggest the answers are, in order: 1) to be a meaningful participant in their communities, both within their program and Georgia Tech; 2) to have feedback and advice for academic training (research writing, etc.); 3) to have more career guidance for both academic and non-academic positions; 4) to have fair and clear qualifying exams; and 5) to be paid fairly for the work they do. These results have been presented to many groups across campus, including the President of Georgia Tech, the Associate Deans, the Associate School Chairs, and the leadership of the College of Sciences and Ivan Allen College. This talk will provide a general overview of the survey results along with a specific look at the results for the School of Aerospace Engineering.
