Rafid Abdulrazaq Jabr, Kadhum Audaa Jehhef, Salah H. Abid Aun
{"title":"不同喷嘴布置对受热块射流冲击传热的影响","authors":"Rafid Abdulrazaq Jabr, Kadhum Audaa Jehhef, Salah H. Abid Aun","doi":"10.1134/S0965544125040073","DOIUrl":null,"url":null,"abstract":"<p>The current paper presents to study effect of consuming a direct slot jet inside a square channel to increase the heat transfer convection in a channel prepared with a heated block and slot jet with different nozzle arrangements. In numerical solution, to construct a two-dimensional domain for simulation, the SOLIDWORKS 2018 software was used, and the numerical tool (ANSYS Fluent Workbench 2020 R2) is employed. The study included the effects of the following parameters such as slot Nozzle opening <i>d</i> = 3, 4, and 5 mm, slot Nozzle distance to opening ratio <i>x/d</i> = 2, 4 and 8, slot Nozzle velocity <i>v</i><sub><i>j</i></sub> = 1, 2, 4 m/s, Heat flux <i>q</i>′′ = 1000 W/m<sup>2</sup>, Duct inlet velocity <i>u</i> = 1 m/s, slot Nozzle hit <i>h</i> = 3.5 cm and slot nozzle types flat, converge, diverges. The present numerical study uses a computational domain of a square duct with a length of 90 cm and a side dimension of 20 cm, which is used for air passage. The main airflow from the surroundings entered the channel inlet to achieve a fully developed flow is about 42.5 cm. The results showed that using the convergent nozzle, which increased in <i>Nu</i> by 73% compared to that of the divergent nozzle, and the enhancement of <i>Nu</i> is 77% associated with that of the flat nozzle when using the convergent Nozzle at <i>x</i><sub><i>j</i></sub> = 6 mm and <i>d</i><sub><i>j</i></sub> = 3 mm.</p>","PeriodicalId":725,"journal":{"name":"Petroleum Chemistry","volume":"65 5","pages":"609 - 623"},"PeriodicalIF":1.1000,"publicationDate":"2025-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Jet Impingement Heat Transfer on Heated Block by Using Different Nozzle Arrangements\",\"authors\":\"Rafid Abdulrazaq Jabr, Kadhum Audaa Jehhef, Salah H. Abid Aun\",\"doi\":\"10.1134/S0965544125040073\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>The current paper presents to study effect of consuming a direct slot jet inside a square channel to increase the heat transfer convection in a channel prepared with a heated block and slot jet with different nozzle arrangements. In numerical solution, to construct a two-dimensional domain for simulation, the SOLIDWORKS 2018 software was used, and the numerical tool (ANSYS Fluent Workbench 2020 R2) is employed. The study included the effects of the following parameters such as slot Nozzle opening <i>d</i> = 3, 4, and 5 mm, slot Nozzle distance to opening ratio <i>x/d</i> = 2, 4 and 8, slot Nozzle velocity <i>v</i><sub><i>j</i></sub> = 1, 2, 4 m/s, Heat flux <i>q</i>′′ = 1000 W/m<sup>2</sup>, Duct inlet velocity <i>u</i> = 1 m/s, slot Nozzle hit <i>h</i> = 3.5 cm and slot nozzle types flat, converge, diverges. The present numerical study uses a computational domain of a square duct with a length of 90 cm and a side dimension of 20 cm, which is used for air passage. The main airflow from the surroundings entered the channel inlet to achieve a fully developed flow is about 42.5 cm. The results showed that using the convergent nozzle, which increased in <i>Nu</i> by 73% compared to that of the divergent nozzle, and the enhancement of <i>Nu</i> is 77% associated with that of the flat nozzle when using the convergent Nozzle at <i>x</i><sub><i>j</i></sub> = 6 mm and <i>d</i><sub><i>j</i></sub> = 3 mm.</p>\",\"PeriodicalId\":725,\"journal\":{\"name\":\"Petroleum Chemistry\",\"volume\":\"65 5\",\"pages\":\"609 - 623\"},\"PeriodicalIF\":1.1000,\"publicationDate\":\"2025-07-18\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Petroleum Chemistry\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://link.springer.com/article/10.1134/S0965544125040073\",\"RegionNum\":4,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"CHEMISTRY, ORGANIC\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Petroleum Chemistry","FirstCategoryId":"5","ListUrlMain":"https://link.springer.com/article/10.1134/S0965544125040073","RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"CHEMISTRY, ORGANIC","Score":null,"Total":0}
Jet Impingement Heat Transfer on Heated Block by Using Different Nozzle Arrangements
The current paper presents to study effect of consuming a direct slot jet inside a square channel to increase the heat transfer convection in a channel prepared with a heated block and slot jet with different nozzle arrangements. In numerical solution, to construct a two-dimensional domain for simulation, the SOLIDWORKS 2018 software was used, and the numerical tool (ANSYS Fluent Workbench 2020 R2) is employed. The study included the effects of the following parameters such as slot Nozzle opening d = 3, 4, and 5 mm, slot Nozzle distance to opening ratio x/d = 2, 4 and 8, slot Nozzle velocity vj = 1, 2, 4 m/s, Heat flux q′′ = 1000 W/m2, Duct inlet velocity u = 1 m/s, slot Nozzle hit h = 3.5 cm and slot nozzle types flat, converge, diverges. The present numerical study uses a computational domain of a square duct with a length of 90 cm and a side dimension of 20 cm, which is used for air passage. The main airflow from the surroundings entered the channel inlet to achieve a fully developed flow is about 42.5 cm. The results showed that using the convergent nozzle, which increased in Nu by 73% compared to that of the divergent nozzle, and the enhancement of Nu is 77% associated with that of the flat nozzle when using the convergent Nozzle at xj = 6 mm and dj = 3 mm.
期刊介绍：
Petroleum Chemistry (Neftekhimiya), founded in 1961, offers original papers on and reviews of theoretical and experimental studies concerned with current problems of petroleum chemistry and processing such as chemical composition of crude oils and natural gas liquids; petroleum refining (cracking, hydrocracking, and catalytic reforming); catalysts for petrochemical processes (hydrogenation, isomerization, oxidation, hydroformylation, etc.); activation and catalytic transformation of hydrocarbons and other components of petroleum, natural gas, and other complex organic mixtures; new petrochemicals including lubricants and additives; environmental problems; and information on scientific meetings relevant to these areas.
Petroleum Chemistry publishes articles on these topics from members of the scientific community of the former Soviet Union.
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