{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2015:LTSHYXJEPBV66RMNPWPEV3GI3L","short_pith_number":"pith:LTSHYXJE","schema_version":"1.0","canonical_sha256":"5ce47c5d24786bef458d7d9e4aecc8daed92bec501a7134c787f92d34cf50662","source":{"kind":"arxiv","id":"1505.06974","version":2},"attestation_state":"computed","paper":{"title":"Resolving vortices with an isothermal HLLC Riemann solver","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.IM","physics.flu-dyn"],"primary_cat":"physics.comp-ph","authors_text":"Manuel Jung, Tobias F. Illenseer, Wolfgang J. Duschl","submitted_at":"2015-05-26T14:47:27Z","abstract_excerpt":"The importance of contact discontinuities in 2D isothermal flows has rarely been discussed, since most Riemann solvers are derived for 1D Euler equations. We present a new contact resolving approximate Riemann solver for the isothermal Euler equations and show its performance for several one- and two-dimensional test problems. The new solver extends the well-known HLL solver, while retaining its computational simplicity. The significant gain in resolution of vortices is displayed by a simulation of the K\\'arm\\'an vortex street. We discuss the loss of Galilean invariance and its implications fo"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1505.06974","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.comp-ph","submitted_at":"2015-05-26T14:47:27Z","cross_cats_sorted":["astro-ph.IM","physics.flu-dyn"],"title_canon_sha256":"8c80fe3242ad23b428fb0cbb2b7e80d56ed0f45dac8689e47ba49f47def655d4","abstract_canon_sha256":"1f8d8eff2aa39d9d63c6d6ec957e66d5780a8fe9ec9d8bd1a7a149f5c9e99bcb"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:36:43.087645Z","signature_b64":"eNDd2oze1+JxUyyBKJzc5Mm1bcTsO+4nBathgr0tuNkEYYQQoS8UrLzA7HVn7N47799Oo0yfBXnB0nfkEIFSCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"5ce47c5d24786bef458d7d9e4aecc8daed92bec501a7134c787f92d34cf50662","last_reissued_at":"2026-05-18T01:36:43.087010Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:36:43.087010Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Resolving vortices with an isothermal HLLC Riemann solver","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.IM","physics.flu-dyn"],"primary_cat":"physics.comp-ph","authors_text":"Manuel Jung, Tobias F. Illenseer, Wolfgang J. Duschl","submitted_at":"2015-05-26T14:47:27Z","abstract_excerpt":"The importance of contact discontinuities in 2D isothermal flows has rarely been discussed, since most Riemann solvers are derived for 1D Euler equations. We present a new contact resolving approximate Riemann solver for the isothermal Euler equations and show its performance for several one- and two-dimensional test problems. The new solver extends the well-known HLL solver, while retaining its computational simplicity. The significant gain in resolution of vortices is displayed by a simulation of the K\\'arm\\'an vortex street. We discuss the loss of Galilean invariance and its implications fo"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1505.06974","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"aliases":[{"alias_kind":"arxiv","alias_value":"1505.06974","created_at":"2026-05-18T01:36:43.087103+00:00"},{"alias_kind":"arxiv_version","alias_value":"1505.06974v2","created_at":"2026-05-18T01:36:43.087103+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1505.06974","created_at":"2026-05-18T01:36:43.087103+00:00"},{"alias_kind":"pith_short_12","alias_value":"LTSHYXJEPBV6","created_at":"2026-05-18T12:29:29.992203+00:00"},{"alias_kind":"pith_short_16","alias_value":"LTSHYXJEPBV66RMN","created_at":"2026-05-18T12:29:29.992203+00:00"},{"alias_kind":"pith_short_8","alias_value":"LTSHYXJE","created_at":"2026-05-18T12:29:29.992203+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/LTSHYXJEPBV66RMNPWPEV3GI3L","json":"https://pith.science/pith/LTSHYXJEPBV66RMNPWPEV3GI3L.json","graph_json":"https://pith.science/api/pith-number/LTSHYXJEPBV66RMNPWPEV3GI3L/graph.json","events_json":"https://pith.science/api/pith-number/LTSHYXJEPBV66RMNPWPEV3GI3L/events.json","paper":"https://pith.science/paper/LTSHYXJE"},"agent_actions":{"view_html":"https://pith.science/pith/LTSHYXJEPBV66RMNPWPEV3GI3L","download_json":"https://pith.science/pith/LTSHYXJEPBV66RMNPWPEV3GI3L.json","view_paper":"https://pith.science/paper/LTSHYXJE","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1505.06974&json=true","fetch_graph":"https://pith.science/api/pith-number/LTSHYXJEPBV66RMNPWPEV3GI3L/graph.json","fetch_events":"https://pith.science/api/pith-number/LTSHYXJEPBV66RMNPWPEV3GI3L/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/LTSHYXJEPBV66RMNPWPEV3GI3L/action/timestamp_anchor","attest_storage":"https://pith.science/pith/LTSHYXJEPBV66RMNPWPEV3GI3L/action/storage_attestation","attest_author":"https://pith.science/pith/LTSHYXJEPBV66RMNPWPEV3GI3L/action/author_attestation","sign_citation":"https://pith.science/pith/LTSHYXJEPBV66RMNPWPEV3GI3L/action/citation_signature","submit_replication":"https://pith.science/pith/LTSHYXJEPBV66RMNPWPEV3GI3L/action/replication_record"}},"created_at":"2026-05-18T01:36:43.087103+00:00","updated_at":"2026-05-18T01:36:43.087103+00:00"}