{"609779":{"#nid":"609779","#data":{"type":"event","title":"PhD Proposal by Amanda Grubb","body":[{"value":"\u003Cp\u003EComputational Characterization and Classification of Transient Stall Events in Rotating Systems\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u0026nbsp;\u003C\/p\u003E\r\n\r\n\u003Cp\u003EPh.D. Thesis Proposal\u003C\/p\u003E\r\n\r\n\u003Cp\u003EAmanda Grubb\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u0026nbsp;\u003C\/p\u003E\r\n\r\n\u003Cp\u003E11 a.m., Thursday, August 23\u003C\/p\u003E\r\n\r\n\u003Cp\u003EMontgomery Knight Building \u0026ndash; Room 317\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u0026nbsp;\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u0026nbsp;\u003C\/p\u003E\r\n\r\n\u003Cp\u003EAbstract\u003C\/p\u003E\r\n\r\n\u003Cp\u003ERotorcraft are highly complex dynamic systems and encounter a variety of aerodynamic phenomena not encountered by traditional fixed-wing aircraft.\u0026nbsp; One problem frequently encountered by rotorcraft is the appearance of stall events, which are transient due to the unsteady nature of rotating systems.\u0026nbsp; These complex aerodynamic phenomena are characterized by the convection of a strong vortex core along the rotor blade surface, and may include blade-vortex interactions and classic dynamic stall.\u0026nbsp; Large losses in lift and large negative pitching moments, both of which are detrimental to the integrity of the aircraft, appear during these events.\u0026nbsp; Fully understanding and being able to predict transient stall is of high importance as the rotorcraft community works towards next-generation vehicle design.\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u0026nbsp;\u003C\/p\u003E\r\n\r\n\u003Cp\u003EMost transient stall research to date has targeted two-dimensional analyses.\u0026nbsp; However, it has been shown that the inclusion of finite wing and rotational effects is necessary to fully capture and characterize stall behavior on rotorcraft.\u0026nbsp; Initial research into current computational approaches for analyzing stall on three-dimensional, rotating systems has identified several major shortcomings regarding turbulence and transition modeling, grid generation techniques, and the inclusion of aeroelastic effects.\u0026nbsp; The limitations of current computational approaches and recommendations to address these shortcomings are presented.\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u0026nbsp;\u003C\/p\u003E\r\n\r\n\u003Cp\u003EThe proposed research goals are to address issues with the computational approaches that currently limit the ability to fully characterize and classify these transient stall events on rotating systems.\u0026nbsp; Those changes will be integrated and applied to new high-fidelity computational fluid dynamics and aeroelastic simulations to evaluate their effects when dynamic flow separation is encountered.\u0026nbsp; The approach will then be applied to available rotor geometries to establish an initial database which characterizes and classifies these events on rotating systems.\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u0026nbsp;\u003C\/p\u003E\r\n\r\n\u003Cp\u003ECommittee\u003C\/p\u003E\r\n\r\n\u003Cp\u003EProf. Marilyn Smith (Advisor), Georgia Institute of Technology, Aerospace Engineering\u003C\/p\u003E\r\n\r\n\u003Cp\u003EProf. Ari Glezer, Georgia Institute of Technology, Mechanical Engineering\u003C\/p\u003E\r\n\r\n\u003Cp\u003EMr. Rohit Jain, U.S. Army AMRDEC, Aviation Development Directorate\u003C\/p\u003E\r\n\r\n\u003Cp\u003EDr. Marvin Moulton, U.S. Army AMRDEC, Aviation Engineering Directorate\u003C\/p\u003E\r\n\r\n\u003Cp\u003EProf. Stephen Ruffin, Georgia Institute of Technology, Aerospace Engineering\u003C\/p\u003E\r\n\r\n\u003Cp\u003EProf. Daniel Schrage, Georgia Institute of Technology, Aerospace Engineering\u003C\/p\u003E\r\n","summary":null,"format":"limited_html"}],"field_subtitle":"","field_summary":"","field_summary_sentence":[{"value":"Computational Characterization and Classification of Transient Stall Events in Rotating Systems"}],"uid":"27707","created_gmt":"2018-08-15 16:32:49","changed_gmt":"2018-08-15 16:32:49","author":"Tatianna Richardson","boilerplate_text":"","field_publication":"","field_article_url":"","field_event_time":{"event_time_start":"2018-08-23T12:00:00-04:00","event_time_end":"2018-08-23T14:00:00-04:00","event_time_end_last":"2018-08-23T14:00:00-04:00","gmt_time_start":"2018-08-23 16:00:00","gmt_time_end":"2018-08-23 18:00:00","gmt_time_end_last":"2018-08-23 18:00:00","rrule":null,"timezone":"America\/New_York"},"extras":[],"groups":[{"id":"221981","name":"Graduate Studies"}],"categories":[],"keywords":[{"id":"102851","name":"Phd proposal"}],"core_research_areas":[],"news_room_topics":[],"event_categories":[{"id":"1788","name":"Other\/Miscellaneous"}],"invited_audience":[{"id":"78761","name":"Faculty\/Staff"},{"id":"78771","name":"Public"},{"id":"174045","name":"Graduate students"},{"id":"78751","name":"Undergraduate students"}],"affiliations":[],"classification":[],"areas_of_expertise":[],"news_and_recent_appearances":[],"phone":[],"contact":[],"email":[],"slides":[],"orientation":[],"userdata":""}}}