{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,7]],"date-time":"2026-01-07T08:11:42Z","timestamp":1767773502715,"version":"build-2065373602"},"reference-count":20,"publisher":"MDPI AG","issue":"7","license":[{"start":{"date-parts":[[2022,7,7]],"date-time":"2022-07-07T00:00:00Z","timestamp":1657152000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"AECC Sichuan Gas Turbine Establishment Stable Support Project","award":["GJCZ-0011-19","2017-V-0015-0067","2019-V-0010-0104"],"award-info":[{"award-number":["GJCZ-0011-19","2017-V-0015-0067","2019-V-0010-0104"]}]},{"name":"National Science, Technology Major Project","award":["GJCZ-0011-19","2017-V-0015-0067","2019-V-0010-0104"],"award-info":[{"award-number":["GJCZ-0011-19","2017-V-0015-0067","2019-V-0010-0104"]}]},{"name":"Technology Major Project","award":["GJCZ-0011-19","2017-V-0015-0067","2019-V-0010-0104"],"award-info":[{"award-number":["GJCZ-0011-19","2017-V-0015-0067","2019-V-0010-0104"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Symmetry"],"abstract":"<jats:p>To solve the modeling problem of altitude ground test facility (AGTF) exhaust systems, which is caused by nonlinearity along the gas path and the difficulty of ejection factor calculation, a multi-cavity iterative modeling method is presented. The components of exhaust systems, such as the exhaust diffuser and cooler, are built with a series of volumes. It overcomes the disadvantage that traditional lumped-parameter models have, whereby they cannot calculate the dynamic parameters along the gas path. The exhaust system model is built with an iterative method based on multi-cavity components, and simulations are carried out under experimental conditions. The simulation results show that the maximum error of pressure is 2 kPa in the steady state and less than 6 kPa in the transient process compared with experimental data. Closed-loop simulations are also carried out to further verify the accuracy and effectiveness of the multi-cavity iterative exhaust system modeling method.<\/jats:p>","DOI":"10.3390\/sym14071399","type":"journal-article","created":{"date-parts":[[2022,7,7]],"date-time":"2022-07-07T22:11:47Z","timestamp":1657231907000},"page":"1399","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":5,"title":["A Multi-Cavity Iterative Modeling Method for the Exhaust Systems of Altitude Ground Test Facilities"],"prefix":"10.3390","volume":"14","author":[{"given":"Keqiang","family":"Miao","sequence":"first","affiliation":[{"name":"School of Energy and Power Engineering, Beihang University, Beijing 100191, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Xi","family":"Wang","sequence":"additional","affiliation":[{"name":"School of Energy and Power Engineering, Beihang University, Beijing 100191, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7764-0530","authenticated-orcid":false,"given":"Meiyin","family":"Zhu","sequence":"additional","affiliation":[{"name":"Beihang Hangzhou Innovation Institute Yuhang, Hangzhou 310023, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Song","family":"Zhang","sequence":"additional","affiliation":[{"name":"Science and Technology on Altitude Simulation Laboratory, AECC Sichuan Gas Turbine Establishment, Mianyang 621703, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Zhihong","family":"Dan","sequence":"additional","affiliation":[{"name":"Science and Technology on Altitude Simulation Laboratory, AECC Sichuan Gas Turbine Establishment, Mianyang 621703, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jiashuai","family":"Liu","sequence":"additional","affiliation":[{"name":"School of Energy and Power Engineering, Beihang University, Beijing 100191, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Shubo","family":"Yang","sequence":"additional","affiliation":[{"name":"School of Energy and Power Engineering, Beihang University, Beijing 100191, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Xitong","family":"Pei","sequence":"additional","affiliation":[{"name":"Research Institute of Aero-Engine, Beihang University, Beijing 100191, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Xin","family":"Wang","sequence":"additional","affiliation":[{"name":"Science and Technology on Altitude Simulation Laboratory, AECC Sichuan Gas Turbine Establishment, Mianyang 621703, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Louyue","family":"Zhang","sequence":"additional","affiliation":[{"name":"School of Energy and Power Engineering, Beihang University, Beijing 100191, China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2022,7,7]]},"reference":[{"key":"ref_1","unstructured":"Hou, M.J. 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