{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,18]],"date-time":"2026-07-18T04:57:09Z","timestamp":1784350629468,"version":"3.55.0"},"reference-count":51,"publisher":"MDPI AG","issue":"3","license":[{"start":{"date-parts":[[2023,2,28]],"date-time":"2023-02-28T00:00:00Z","timestamp":1677542400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"National Science and Technology Major Project of China","award":["J2019-V-0001-0092"],"award-info":[{"award-number":["J2019-V-0001-0092"]}]},{"name":"National Science and Technology Major Project of China","award":["J2019-V-0013-0108"],"award-info":[{"award-number":["J2019-V-0013-0108"]}]},{"name":"Project of Sichuan Gas Turbine Establishment of Aero Engine Corporation of China","award":["J2019-V-0001-0092"],"award-info":[{"award-number":["J2019-V-0001-0092"]}]},{"name":"Project of Sichuan Gas Turbine Establishment of Aero Engine Corporation of China","award":["J2019-V-0013-0108"],"award-info":[{"award-number":["J2019-V-0013-0108"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Entropy"],"abstract":"<jats:p>An automatic hole-cutting method is proposed to search donor cells between a structured Cartesian mesh and an overlapping body-fitted mesh. The main flow is simulated on the structured Cartesian mesh and the viscous flow near the solid boundary is simulated on the body-fitted mesh. Through the spatial interpolation of flux, the surface boundary information on the body-fitted mesh is transferred to the Cartesian mesh nodes near the surface. Cartesian mesh box near a body-fitted mesh cell is selected as a local inverse map. The Cartesian nodes located inside the donor cells are marked by the relative coordinate transformation, so that all Cartesian nodes can be classified and the hole boundaries are implicitly cut. This hole-cutting process for overset grid assembly is called Local Inverse Mapping (LIM) method. In the LIM method, spatial interpolation of flux is carried out synchronously with the marking of Cartesian nodes. The LIM method is combined with the in-house finite-difference solver to simulate the unsteady flow field of moving bodies. The numerical results show that the LIM method can accurately mark the Cartesian hole boundary nodes, the search efficiency of donor cells is high, and the result of spatial interpolation is accurate. The calculation time of overset grid assembly (OGA) can be less than 3% of the total simulation time.<\/jats:p>","DOI":"10.3390\/e25030432","type":"journal-article","created":{"date-parts":[[2023,2,28]],"date-time":"2023-02-28T06:09:52Z","timestamp":1677564592000},"page":"432","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Local Inverse Mapping Implicit Hole-Cutting Method for Structured Cartesian Overset Grid Assembly"],"prefix":"10.3390","volume":"25","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-8996-9915","authenticated-orcid":false,"given":"Jingyuan","family":"Wang","sequence":"first","affiliation":[{"name":"State Key Laboratory of HydroScience and Engineering, Department of Energy and Power Engineering, Tsinghua University, Beijing 100084, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Feng","family":"Wu","sequence":"additional","affiliation":[{"name":"AECC Sichuan Gas Turbine Establishment, Mianyang 621000, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Quanyong","family":"Xu","sequence":"additional","affiliation":[{"name":"Institute for Aero Engine, Tsinghua University, Beijing 100084, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5415-787X","authenticated-orcid":false,"given":"Lei","family":"Tan","sequence":"additional","affiliation":[{"name":"State Key Laboratory of HydroScience and Engineering, Department of Energy and Power Engineering, Tsinghua University, Beijing 100084, China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2023,2,28]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"479","DOI":"10.1017\/S0962492902000077","article-title":"The immersed boundary method","volume":"11","author":"Peskin","year":"2002","journal-title":"Acta Numer."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"77","DOI":"10.1016\/j.compfluid.2018.04.033","article-title":"Immersed boundary method for viscous compressible flows around moving bodies","volume":"170","author":"Khalili","year":"2018","journal-title":"Comput. 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