{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:RAWGI6G3XFFPSMXSAZ4RXFADAW","short_pith_number":"pith:RAWGI6G3","canonical_record":{"source":{"id":"1807.08219","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.comp-ph","submitted_at":"2018-07-22T01:11:51Z","cross_cats_sorted":["physics.flu-dyn"],"title_canon_sha256":"83fa3729eb601cb25db8518156c684ac4cec432312e03905261abde8a0276a12","abstract_canon_sha256":"1362a9ed5e925030ea0e929d21689a60cd4d31315b8f32045090a807c1422674"},"schema_version":"1.0"},"canonical_sha256":"882c6478dbb94af932f206791b940305aa6e739ba9fea08229d29099bb3ce4d1","source":{"kind":"arxiv","id":"1807.08219","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1807.08219","created_at":"2026-05-17T23:51:49Z"},{"alias_kind":"arxiv_version","alias_value":"1807.08219v3","created_at":"2026-05-17T23:51:49Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1807.08219","created_at":"2026-05-17T23:51:49Z"},{"alias_kind":"pith_short_12","alias_value":"RAWGI6G3XFFP","created_at":"2026-05-18T12:32:50Z"},{"alias_kind":"pith_short_16","alias_value":"RAWGI6G3XFFPSMXS","created_at":"2026-05-18T12:32:50Z"},{"alias_kind":"pith_short_8","alias_value":"RAWGI6G3","created_at":"2026-05-18T12:32:50Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:RAWGI6G3XFFPSMXSAZ4RXFADAW","target":"record","payload":{"canonical_record":{"source":{"id":"1807.08219","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.comp-ph","submitted_at":"2018-07-22T01:11:51Z","cross_cats_sorted":["physics.flu-dyn"],"title_canon_sha256":"83fa3729eb601cb25db8518156c684ac4cec432312e03905261abde8a0276a12","abstract_canon_sha256":"1362a9ed5e925030ea0e929d21689a60cd4d31315b8f32045090a807c1422674"},"schema_version":"1.0"},"canonical_sha256":"882c6478dbb94af932f206791b940305aa6e739ba9fea08229d29099bb3ce4d1","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:51:49.246202Z","signature_b64":"fcE/TOhataeuuBLb0yg5XsZ3yqTUD12HuOPQSbcnur/R9t6uGppV96kuiyh4SAO5AqtHPX2s/OQfxjV/ULNLDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"882c6478dbb94af932f206791b940305aa6e739ba9fea08229d29099bb3ce4d1","last_reissued_at":"2026-05-17T23:51:49.245581Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:51:49.245581Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1807.08219","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-17T23:51:49Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"i5qUeRJlUv6vAZGCPqhrbm02gwBoWty8web8qefhG5NC86mszmz2jv1uHDsOLGbEC2EjkI64R0yXFplrbas7Bw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-07T16:37:24.861839Z"},"content_sha256":"9fbd3431aeb23eed20116adf6dd3b4e4ca1510fb5627318116638e22da22515a","schema_version":"1.0","event_id":"sha256:9fbd3431aeb23eed20116adf6dd3b4e4ca1510fb5627318116638e22da22515a"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:RAWGI6G3XFFPSMXSAZ4RXFADAW","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Immersed-finite-element method for deformable particle suspensions in viscous and viscoelastic media","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.flu-dyn"],"primary_cat":"physics.comp-ph","authors_text":"Amir Saadat, Chris J. Guido, Eric S. G. Shaqfeh, Gianluca Iaccarino","submitted_at":"2018-07-22T01:11:51Z","abstract_excerpt":"Deformable elastic bodies in viscous and viscoelastic media constitute a large portion of synthetic and biological complex fluids. We present a parallelized 3D-simulation methodology which fully resolves the momentum balance in the solid and fluid domains. An immersed boundary algorithm is exploited known as the immersed finite element method (IFEM) which accurately determines the internal forces in the solid domain. The scheme utilized has the advantages of requiring no costly re-meshing, handling finite Reynold's number, as well as incorporating non-linear viscoelasticity in the fluid domain"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1807.08219","kind":"arxiv","version":3},"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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-17T23:51:49Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"i9AXnvjdendnR+6hj74OXeFpGT4T/VP0CybVa4nia6BxczL0NJjWJKOgrMICCEKG4BsgbdHXx62cWJX0f2QoDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-07T16:37:24.862498Z"},"content_sha256":"0038db21b4dfb67212841d29eb6dc2b4166dec79d93dad9de04fdfdc3fdcbc13","schema_version":"1.0","event_id":"sha256:0038db21b4dfb67212841d29eb6dc2b4166dec79d93dad9de04fdfdc3fdcbc13"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/RAWGI6G3XFFPSMXSAZ4RXFADAW/bundle.json","state_url":"https://pith.science/pith/RAWGI6G3XFFPSMXSAZ4RXFADAW/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/RAWGI6G3XFFPSMXSAZ4RXFADAW/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-06-07T16:37:24Z","links":{"resolver":"https://pith.science/pith/RAWGI6G3XFFPSMXSAZ4RXFADAW","bundle":"https://pith.science/pith/RAWGI6G3XFFPSMXSAZ4RXFADAW/bundle.json","state":"https://pith.science/pith/RAWGI6G3XFFPSMXSAZ4RXFADAW/state.json","well_known_bundle":"https://pith.science/.well-known/pith/RAWGI6G3XFFPSMXSAZ4RXFADAW/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:RAWGI6G3XFFPSMXSAZ4RXFADAW","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"1362a9ed5e925030ea0e929d21689a60cd4d31315b8f32045090a807c1422674","cross_cats_sorted":["physics.flu-dyn"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.comp-ph","submitted_at":"2018-07-22T01:11:51Z","title_canon_sha256":"83fa3729eb601cb25db8518156c684ac4cec432312e03905261abde8a0276a12"},"schema_version":"1.0","source":{"id":"1807.08219","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1807.08219","created_at":"2026-05-17T23:51:49Z"},{"alias_kind":"arxiv_version","alias_value":"1807.08219v3","created_at":"2026-05-17T23:51:49Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1807.08219","created_at":"2026-05-17T23:51:49Z"},{"alias_kind":"pith_short_12","alias_value":"RAWGI6G3XFFP","created_at":"2026-05-18T12:32:50Z"},{"alias_kind":"pith_short_16","alias_value":"RAWGI6G3XFFPSMXS","created_at":"2026-05-18T12:32:50Z"},{"alias_kind":"pith_short_8","alias_value":"RAWGI6G3","created_at":"2026-05-18T12:32:50Z"}],"graph_snapshots":[{"event_id":"sha256:0038db21b4dfb67212841d29eb6dc2b4166dec79d93dad9de04fdfdc3fdcbc13","target":"graph","created_at":"2026-05-17T23:51:49Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"paper":{"abstract_excerpt":"Deformable elastic bodies in viscous and viscoelastic media constitute a large portion of synthetic and biological complex fluids. We present a parallelized 3D-simulation methodology which fully resolves the momentum balance in the solid and fluid domains. An immersed boundary algorithm is exploited known as the immersed finite element method (IFEM) which accurately determines the internal forces in the solid domain. The scheme utilized has the advantages of requiring no costly re-meshing, handling finite Reynold's number, as well as incorporating non-linear viscoelasticity in the fluid domain","authors_text":"Amir Saadat, Chris J. Guido, Eric S. G. Shaqfeh, Gianluca Iaccarino","cross_cats":["physics.flu-dyn"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.comp-ph","submitted_at":"2018-07-22T01:11:51Z","title":"Immersed-finite-element method for deformable particle suspensions in viscous and viscoelastic media"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1807.08219","kind":"arxiv","version":3},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:9fbd3431aeb23eed20116adf6dd3b4e4ca1510fb5627318116638e22da22515a","target":"record","created_at":"2026-05-17T23:51:49Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"1362a9ed5e925030ea0e929d21689a60cd4d31315b8f32045090a807c1422674","cross_cats_sorted":["physics.flu-dyn"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.comp-ph","submitted_at":"2018-07-22T01:11:51Z","title_canon_sha256":"83fa3729eb601cb25db8518156c684ac4cec432312e03905261abde8a0276a12"},"schema_version":"1.0","source":{"id":"1807.08219","kind":"arxiv","version":3}},"canonical_sha256":"882c6478dbb94af932f206791b940305aa6e739ba9fea08229d29099bb3ce4d1","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"882c6478dbb94af932f206791b940305aa6e739ba9fea08229d29099bb3ce4d1","first_computed_at":"2026-05-17T23:51:49.245581Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:51:49.245581Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"fcE/TOhataeuuBLb0yg5XsZ3yqTUD12HuOPQSbcnur/R9t6uGppV96kuiyh4SAO5AqtHPX2s/OQfxjV/ULNLDw==","signature_status":"signed_v1","signed_at":"2026-05-17T23:51:49.246202Z","signed_message":"canonical_sha256_bytes"},"source_id":"1807.08219","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9fbd3431aeb23eed20116adf6dd3b4e4ca1510fb5627318116638e22da22515a","sha256:0038db21b4dfb67212841d29eb6dc2b4166dec79d93dad9de04fdfdc3fdcbc13"],"state_sha256":"420e55f2c562952275e37bf3411cf53411bab7e4e4ada235edf8de29f18d1e61"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Ef8AZ6YSwhZQz1I3EMgRGdh6qiYuGcwFiIKP1/222LN9L3t5n28C8ikX4V4iXmv9Ce6dJs3KxTaRvB7d5AZIAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-07T16:37:24.866553Z","bundle_sha256":"2f0f344037d39ef08855218f8203d4db44f5164d7e9aff6b5fd27116dd7f7ad9"}}