垂直圆柱开口腔内共轭自然对流的数值研究

IF 2.8 4区工程技术 Q2 ENGINEERING, MECHANICAL

Journal of Heat Transfer-transactions of The Asme Pub Date : 2023-04-27 DOI:10.1115/1.4062428

Shafiq Mohamad, S. Rout, J. Senapati, S. Sarangi

{"title":"垂直圆柱开口腔内共轭自然对流的数值研究","authors":"Shafiq Mohamad, S. Rout, J. Senapati, S. Sarangi","doi":"10.1115/1.4062428","DOIUrl":null,"url":null,"abstract":"\n An extensive numerical analysis is performed on a vertical cylindrical open cavity made of aluminum with multiple thicknesses for conjugate natural convection. The key purpose of this study is to evaluate cylinder wall thickness effect on the natural convection at outer wall cylinder, which is coupled to inner cylinder wall that has a stable temperature of 450 K and the ambient air which temperature is 300 K. The Navier-Stokes equations, continuity equation and energy equations are solved numerically. The finite volume method is applied in the computational domain that includes the vertical cylindrical open cavity by using Ansys-Fluent 18 to specify the properties of flow and exchange of thermal energy. Couple of pertinent parameters are used for the numerical investigation like Rayleigh number within laminar regime (within range 104 to 108), aspect ratio (L/D) of the vertical cylindrical open cavity (2, 4, 6, 8, 10) and cylinder wall thickness (0, 1, 2, 3, 4 mm). This study presents the velocity vector field and thermal plume contours. An approximate Nusselt number to Rayleigh number equation is developed for the vertical cylindrical cavity within the range of Rayleigh numbers addressed by this work","PeriodicalId":15937,"journal":{"name":"Journal of Heat Transfer-transactions of The Asme","volume":"47 1","pages":""},"PeriodicalIF":2.8000,"publicationDate":"2023-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"2","resultStr":"{\"title\":\"Numerical Investigation of Conjugate Natural Convection From a Vertical Cylindrical Open Cavity\",\"authors\":\"Shafiq Mohamad, S. Rout, J. Senapati, S. Sarangi\",\"doi\":\"10.1115/1.4062428\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"\\n An extensive numerical analysis is performed on a vertical cylindrical open cavity made of aluminum with multiple thicknesses for conjugate natural convection. The key purpose of this study is to evaluate cylinder wall thickness effect on the natural convection at outer wall cylinder, which is coupled to inner cylinder wall that has a stable temperature of 450 K and the ambient air which temperature is 300 K. The Navier-Stokes equations, continuity equation and energy equations are solved numerically. The finite volume method is applied in the computational domain that includes the vertical cylindrical open cavity by using Ansys-Fluent 18 to specify the properties of flow and exchange of thermal energy. Couple of pertinent parameters are used for the numerical investigation like Rayleigh number within laminar regime (within range 104 to 108), aspect ratio (L/D) of the vertical cylindrical open cavity (2, 4, 6, 8, 10) and cylinder wall thickness (0, 1, 2, 3, 4 mm). This study presents the velocity vector field and thermal plume contours. An approximate Nusselt number to Rayleigh number equation is developed for the vertical cylindrical cavity within the range of Rayleigh numbers addressed by this work\",\"PeriodicalId\":15937,\"journal\":{\"name\":\"Journal of Heat Transfer-transactions of The Asme\",\"volume\":\"47 1\",\"pages\":\"\"},\"PeriodicalIF\":2.8000,\"publicationDate\":\"2023-04-27\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"2\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Heat Transfer-transactions of The Asme\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://doi.org/10.1115/1.4062428\",\"RegionNum\":4,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"ENGINEERING, MECHANICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Heat Transfer-transactions of The Asme","FirstCategoryId":"5","ListUrlMain":"https://doi.org/10.1115/1.4062428","RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENGINEERING, MECHANICAL","Score":null,"Total":0}

引用次数: 2

摘要

对具有多种厚度的铝制成的垂直圆柱开腔进行了广泛的数值分析，用于共轭自然对流。本研究的主要目的是评价筒壁厚度对外壁筒与稳定温度为450 K的内壁和环境温度为300 K的空气耦合的自然对流的影响。对Navier-Stokes方程、连续性方程和能量方程进行了数值求解。利用Ansys-Fluent 18软件，将有限体积法应用于包括垂直圆柱开口腔在内的计算域，以确定其流动特性和热交换特性。在层流状态下，采用了瑞利数(104 ~ 108)、垂直圆柱开口腔宽高比(L/D)(2、4、6、8、10)和圆柱壁厚(0,1、2、3、4 mm)等参数进行数值研究。本文给出了速度矢量场和热烟流等高线。在瑞利数范围内，建立了垂直圆柱腔的近似努塞尔数到瑞利数方程

本文章由计算机程序翻译，如有差异，请以英文原文为准。

查看原文本刊更多论文

Numerical Investigation of Conjugate Natural Convection From a Vertical Cylindrical Open Cavity

An extensive numerical analysis is performed on a vertical cylindrical open cavity made of aluminum with multiple thicknesses for conjugate natural convection. The key purpose of this study is to evaluate cylinder wall thickness effect on the natural convection at outer wall cylinder, which is coupled to inner cylinder wall that has a stable temperature of 450 K and the ambient air which temperature is 300 K. The Navier-Stokes equations, continuity equation and energy equations are solved numerically. The finite volume method is applied in the computational domain that includes the vertical cylindrical open cavity by using Ansys-Fluent 18 to specify the properties of flow and exchange of thermal energy. Couple of pertinent parameters are used for the numerical investigation like Rayleigh number within laminar regime (within range 104 to 108), aspect ratio (L/D) of the vertical cylindrical open cavity (2, 4, 6, 8, 10) and cylinder wall thickness (0, 1, 2, 3, 4 mm). This study presents the velocity vector field and thermal plume contours. An approximate Nusselt number to Rayleigh number equation is developed for the vertical cylindrical cavity within the range of Rayleigh numbers addressed by this work

求助全文

通过发布文献求助，成功后即可免费获取论文全文。去求助

来源期刊

Journal of Heat Transfer-transactions of The Asme 工程技术-工程：机械

自引率

0.00%

发文量

182

审稿时长

4.7 months

期刊介绍： Topical areas including, but not limited to: Biological heat and mass transfer; Combustion and reactive flows; Conduction; Electronic and photonic cooling; Evaporation, boiling, and condensation; Experimental techniques; Forced convection; Heat exchanger fundamentals; Heat transfer enhancement; Combined heat and mass transfer; Heat transfer in manufacturing; Jets, wakes, and impingement cooling; Melting and solidification; Microscale and nanoscale heat and mass transfer; Natural and mixed convection; Porous media; Radiative heat transfer; Thermal systems; Two-phase flow and heat transfer. Such topical areas may be seen in: Aerospace; The environment; Gas turbines; Biotechnology; Electronic and photonic processes and equipment; Energy systems, Fire and combustion, heat pipes, manufacturing and materials processing, low temperature and arctic region heat transfer; Refrigeration and air conditioning; Homeland security systems; Multi-phase processes; Microscale and nanoscale devices and processes.