{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2017:ZRNEGZVF4RQWU3GPXWBGA7TASW","short_pith_number":"pith:ZRNEGZVF","schema_version":"1.0","canonical_sha256":"cc5a4366a5e4616a6ccfbd82607e60958a7a5abe183599d58874ca9c8caa7ac0","source":{"kind":"arxiv","id":"1702.04102","version":1},"attestation_state":"computed","paper":{"title":"A comment on `An improved macroscale model for gas slip flow in porous media'","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.flu-dyn","authors_text":"Chang Liu, Kun Xu, Lefki Germanou, Lei Wu, Minh Tuan Ho, Xiao-Jun Gu, Yonghao Zhang","submitted_at":"2017-02-14T07:42:55Z","abstract_excerpt":"In a recent paper by Lasseux, Vald\\'{e}s-Parada and Porter (J.~Fluid~Mech. \\textbf{805} (2016) 118-146), it is found that the apparent gas permeability of the porous media is a nonlinear function of the Knudsen number. However, this result is highly questionable, because the adopted Navier-Stokes equations and the first-order velocity-slip boundary condition are first-order (in terms of the Knudsen number) approximations of the Boltzmann equation and the kinetic boundary condition for rarefied gas flows. Our numerical simulations based on the Bhatnagar-Gross-Krook kinetic equation and regulari"},"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":"1702.04102","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.flu-dyn","submitted_at":"2017-02-14T07:42:55Z","cross_cats_sorted":[],"title_canon_sha256":"de1dc917fe6b5d41ff55a6f10085701980e7d6a3c0550bfb65e9882960dafb6b","abstract_canon_sha256":"b3572a9683ae004059a202d7dd7606398bdd7f56f2e32eb1727421f87da5a8f5"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:50:49.026310Z","signature_b64":"6rfC6FHST+OfpWqnBbZ1xmW2T/Lxo5IHV0EaJs03QOFv4xHrcpQHV0R6auhdgD0eFiU8aI/uQOJaVhkFR377Ag==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"cc5a4366a5e4616a6ccfbd82607e60958a7a5abe183599d58874ca9c8caa7ac0","last_reissued_at":"2026-05-18T00:50:49.025832Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:50:49.025832Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"A comment on `An improved macroscale model for gas slip flow in porous media'","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.flu-dyn","authors_text":"Chang Liu, Kun Xu, Lefki Germanou, Lei Wu, Minh Tuan Ho, Xiao-Jun Gu, Yonghao Zhang","submitted_at":"2017-02-14T07:42:55Z","abstract_excerpt":"In a recent paper by Lasseux, Vald\\'{e}s-Parada and Porter (J.~Fluid~Mech. \\textbf{805} (2016) 118-146), it is found that the apparent gas permeability of the porous media is a nonlinear function of the Knudsen number. However, this result is highly questionable, because the adopted Navier-Stokes equations and the first-order velocity-slip boundary condition are first-order (in terms of the Knudsen number) approximations of the Boltzmann equation and the kinetic boundary condition for rarefied gas flows. Our numerical simulations based on the Bhatnagar-Gross-Krook kinetic equation and regulari"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1702.04102","kind":"arxiv","version":1},"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":"1702.04102","created_at":"2026-05-18T00:50:49.025913+00:00"},{"alias_kind":"arxiv_version","alias_value":"1702.04102v1","created_at":"2026-05-18T00:50:49.025913+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1702.04102","created_at":"2026-05-18T00:50:49.025913+00:00"},{"alias_kind":"pith_short_12","alias_value":"ZRNEGZVF4RQW","created_at":"2026-05-18T12:31:59.375834+00:00"},{"alias_kind":"pith_short_16","alias_value":"ZRNEGZVF4RQWU3GP","created_at":"2026-05-18T12:31:59.375834+00:00"},{"alias_kind":"pith_short_8","alias_value":"ZRNEGZVF","created_at":"2026-05-18T12:31:59.375834+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/ZRNEGZVF4RQWU3GPXWBGA7TASW","json":"https://pith.science/pith/ZRNEGZVF4RQWU3GPXWBGA7TASW.json","graph_json":"https://pith.science/api/pith-number/ZRNEGZVF4RQWU3GPXWBGA7TASW/graph.json","events_json":"https://pith.science/api/pith-number/ZRNEGZVF4RQWU3GPXWBGA7TASW/events.json","paper":"https://pith.science/paper/ZRNEGZVF"},"agent_actions":{"view_html":"https://pith.science/pith/ZRNEGZVF4RQWU3GPXWBGA7TASW","download_json":"https://pith.science/pith/ZRNEGZVF4RQWU3GPXWBGA7TASW.json","view_paper":"https://pith.science/paper/ZRNEGZVF","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1702.04102&json=true","fetch_graph":"https://pith.science/api/pith-number/ZRNEGZVF4RQWU3GPXWBGA7TASW/graph.json","fetch_events":"https://pith.science/api/pith-number/ZRNEGZVF4RQWU3GPXWBGA7TASW/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/ZRNEGZVF4RQWU3GPXWBGA7TASW/action/timestamp_anchor","attest_storage":"https://pith.science/pith/ZRNEGZVF4RQWU3GPXWBGA7TASW/action/storage_attestation","attest_author":"https://pith.science/pith/ZRNEGZVF4RQWU3GPXWBGA7TASW/action/author_attestation","sign_citation":"https://pith.science/pith/ZRNEGZVF4RQWU3GPXWBGA7TASW/action/citation_signature","submit_replication":"https://pith.science/pith/ZRNEGZVF4RQWU3GPXWBGA7TASW/action/replication_record"}},"created_at":"2026-05-18T00:50:49.025913+00:00","updated_at":"2026-05-18T00:50:49.025913+00:00"}