{"605349":{"#nid":"605349","#data":{"type":"event","title":"Phd Defense by Zhonghao Zun","body":[{"value":"\u003Cp\u003E\u003Cstrong\u003ESchool of Civil and Environmental Engineering\u003C\/strong\u003E\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u0026nbsp;\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u003Cstrong\u003EPh.D. Thesis Defense Announcement\u003C\/strong\u003E\u003C\/p\u003E\r\n\r\n\u003Cp\u003ECapillary Phenomena in Porous Media: Pore and Grain Scale Studies\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u0026nbsp;\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u003Cstrong\u003EBy\u003C\/strong\u003E\u003C\/p\u003E\r\n\r\n\u003Cp\u003EZhonghao Sun\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u0026nbsp;\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u003Cstrong\u003EAdvisor:\u003C\/strong\u003E\u003C\/p\u003E\r\n\r\n\u003Cp\u003EDr. J. Carlos Santamarina (CEE)\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u0026nbsp;\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u003Cstrong\u003ECommittee Members:\u003C\/strong\u003E\u003C\/p\u003E\r\n\r\n\u003Cp\u003EDr. J. David Frost (CEE), Dr. Susan E. Burns (CEE), Dr. Sheng Dai (CEE) and Dr. Guillermo Goldsztein (MATH)\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u0026nbsp;\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u003Cstrong\u003EDate \u0026amp; Time:\u003C\/strong\u003E Friday, May 4, 2018, 2:00 PM\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u003Cstrong\u003ELocation:\u003C\/strong\u003E Sustainable Education Building, 122\u003C\/p\u003E\r\n\r\n\u003Cp\u003EMultiphase flow is a common phenomenon in porous media in both natural and industrial processes such as hydrocarbon recovery, geological CO2 storage, remediation of contaminated ground, and flow in unsaturated soils. Capillary phenomena play a critical role in determining the flow regimes, residual fluid distribution, displacement efficiency, and all forms of fluid-solid interactions. This study aims to advance the physical understanding of key capillary phenomena in porous media using pore-scale and bench-scale experiments complemented with physical and mathematical analyses.\u003C\/p\u003E\r\n\r\n\u003Cp\u003EThe non-cylindrical pore geometry has profound effects on multiphase flow. The non-circular transverse pore geometry ensures the connectivity of wetting fluids along pore edges and corners. On the other hand, the converging-diverging longitudinal pore geometry results in non-constant capillary pressures across pore constrictions; interfacial instabilities such as Haines jumps and snap-offs may take place in this case. The evolution of instabilities depends on nearby interacting menisci.\u003C\/p\u003E\r\n\r\n\u003Cp\u003ESurfactants and particles adsorb to the fluid-fluid interface and change interfacial characteristics such as the interfacial tension and the contact angle. Transient changes in the surfactant surface density in converging-diverging pores alter capillary phenomena. The shell-like mechanical property of particle-coated interfaces results in profoundly different displacement behavior in pores and abnormal fingering instabilities as observed in Hele-Shaw cells.\u003C\/p\u003E\r\n\r\n\u003Cp\u003EThe interfacial tension resists the capillary pressure between immiscible fluids, and it transfers the tension onto the grains. In deformable porous media such as sediments, these forces may create openings that facilitate the migration of the non-wetting fluid. Opening-mode discontinuities vary from cavities to fractures depending on the stress state, the mechanical properties of the sediments, and the invaded volume.\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u0026nbsp;\u003C\/p\u003E\r\n","summary":null,"format":"limited_html"}],"field_subtitle":"","field_summary":"","field_summary_sentence":[{"value":"Capillary Phenomena in Porous Media: Pore and Grain Scale Studies"}],"uid":"27707","created_gmt":"2018-04-20 14:46:39","changed_gmt":"2018-04-20 14:46:39","author":"Tatianna Richardson","boilerplate_text":"","field_publication":"","field_article_url":"","field_event_time":{"event_time_start":"2018-05-04T15:00:00-04:00","event_time_end":"2018-05-04T17:00:00-04:00","event_time_end_last":"2018-05-04T17:00:00-04:00","gmt_time_start":"2018-05-04 19:00:00","gmt_time_end":"2018-05-04 21:00:00","gmt_time_end_last":"2018-05-04 21:00:00","rrule":null,"timezone":"America\/New_York"},"extras":[],"groups":[{"id":"221981","name":"Graduate Studies"}],"categories":[],"keywords":[{"id":"100811","name":"Phd Defense"}],"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":""}}}