{"id":{"repo_id":"wichita-thes","oai_identifier":"oai:null:10057/11700"},"canonical_url":"https://search.dev.ndltd.org/etd/wichita-thes/oai:null:10057/11700","repository":{"repo_id":"wichita-thes","name":"Wichita State University","base_url":"https://soar.wichita.edu/oai/request"},"display":{"title":"Pellet ablation in Tokamak reactors","abstract":"We implemented a rotational cloud model for the simulation of pellet ablation in a Tokamak reactor. We have shown that the ablation rate in the rotational cloud model converges quickly to a steady state value independent of the plasma warmup time. In contrast, the ablation rate in the non-rotating cloud model converges slowly to a value that depends upon the warmup time. We have also extended the neutral gas shielding (NGS) model for Maxwellian plasma electrons. A tumbling pellet model has been implemented. We have also compared the simulation results using a MUSCL scheme and a Discontinuous Galerkin (DG) scheme with a specialized nonuniform grid suited to the pellet problem in one space dimension, and developed a localized Discontinuous Galerkin method to solve the pellet ablation problem. One and two dimensional results are presented.","abstract_html":"We implemented a rotational cloud model for the simulation of pellet ablation in a Tokamak reactor. We have shown that the ablation rate in the rotational cloud model converges quickly to a steady state value independent of the plasma warmup time. In contrast, the ablation rate in the non-rotating cloud model converges slowly to a value that depends upon the warmup time. We have also extended the neutral gas shielding (NGS) model for Maxwellian plasma electrons. A tumbling pellet model has been implemented. We have also compared the simulation results using a MUSCL scheme and a Discontinuous Galerkin (DG) scheme with a specialized nonuniform grid suited to the pellet problem in one space dimension, and developed a localized Discontinuous Galerkin method to solve the pellet ablation problem. One and two dimensional results are presented.","abstract_has_math":false,"creators":["Rinker, Patrick"],"institution":"Wichita State University","degree_name":null,"degree_level":null,"degree_discipline":null,"degree_department":null,"school":null,"contributors":[],"advisors":["Lu, Tianshi"],"committee_chairs":[],"committee_members":[],"year":2015,"date_issued":"2015-07","date_published":"2015-07","updated_at":"2026-08-21T16:50:43Z","subjects":[],"languages":["en_US"],"rights":["Copyright 2015 Patrick Rinker"],"rights_urls":[],"identifier_entries":[{"key":"dc:identifier.other","label":"Dc Identifier Other","values":["d15031"],"render_values":[{"text":"d15031","href":null,"code":true}]}]},"links":{"outbound_url":"http://hdl.handle.net/10057/11700","outbound_label":"Handle","outbound_source":"dc:identifier.uri"},"source_record":{"url":"https://soar.wichita.edu/oai/request?verb=GetRecord&metadataPrefix=dim&identifier=oai%3Anull%3A10057%2F11700","prefix":"dim"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor.advisor","label":"Advisor","values":["Lu, Tianshi"]},{"key":"dc:creator","label":"Author","values":["Rinker, Patrick"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date.accessioned","label":"Dc Date Accessioned","values":["2015-12-11T19:30:19Z"]},{"key":"dc:date.available","label":"Dc Date Available","values":["2015-12-11T19:30:19Z"]},{"key":"dc:date.issued","label":"Date","values":["2015-07"]},{"key":"dc:publisher","label":"Institution","values":["Wichita State University"]},{"key":"dc:type","label":"Dc Type","values":["Dissertation"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language.iso","label":"Language (ISO)","values":["en_US"]},{"key":"dc:rights","label":"Dc Rights","values":["Copyright 2015 Patrick Rinker"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier.other","label":"Dc Identifier Other","values":["d15031"]},{"key":"dc:identifier.uri","label":"Identifier URI","values":["http://hdl.handle.net/10057/11700"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["Thesis (Ph.D.)-- Wichita State University, Fairmount College of Liberal Arts and Sciences, Dept. of Mathematics, Statistics and Physics"]},{"key":"dc:description.abstract","label":"Abstract","values":["We implemented a rotational cloud model for the simulation of pellet ablation in a Tokamak reactor. We have shown that the ablation rate in the rotational cloud model converges quickly to a steady state value independent of the plasma warmup time. In contrast, the ablation rate in the non-rotating cloud model converges slowly to a value that depends upon the warmup time. We have also extended the neutral gas shielding (NGS) model for Maxwellian plasma electrons. A tumbling pellet model has been implemented. We have also compared the simulation results using a MUSCL scheme and a Discontinuous Galerkin (DG) scheme with a specialized nonuniform grid suited to the pellet problem in one space dimension, and developed a localized Discontinuous Galerkin method to solve the pellet ablation problem. One and two dimensional results are presented."]},{"key":"dc:title","label":"Title","values":["Pellet ablation in Tokamak reactors"]}]}],"canonical_facts":{"dc:contributor.advisor":["Lu, Tianshi"],"dc:creator":["Rinker, Patrick"],"dc:date.accessioned":["2015-12-11T19:30:19Z"],"dc:date.available":["2015-12-11T19:30:19Z"],"dc:date.issued":["2015-07"],"dc:description":["Thesis (Ph.D.)-- Wichita State University, Fairmount College of Liberal Arts and Sciences, Dept. of Mathematics, Statistics and Physics"],"dc:description.abstract":["We implemented a rotational cloud model for the simulation of pellet ablation in a Tokamak reactor. We have shown that the ablation rate in the rotational cloud model converges quickly to a steady state value independent of the plasma warmup time. In contrast, the ablation rate in the non-rotating cloud model converges slowly to a value that depends upon the warmup time. We have also extended the neutral gas shielding (NGS) model for Maxwellian plasma electrons. A tumbling pellet model has been implemented. We have also compared the simulation results using a MUSCL scheme and a Discontinuous Galerkin (DG) scheme with a specialized nonuniform grid suited to the pellet problem in one space dimension, and developed a localized Discontinuous Galerkin method to solve the pellet ablation problem. One and two dimensional results are presented."],"dc:identifier.other":["d15031"],"dc:identifier.uri":["http://hdl.handle.net/10057/11700"],"dc:language.iso":["en_US"],"dc:publisher":["Wichita State University"],"dc:rights":["Copyright 2015 Patrick Rinker"],"dc:title":["Pellet ablation in Tokamak reactors"],"dc:type":["Dissertation"]},"updated_at":"2026-08-21T16:50:43Z"}