Natural convection in a vertical cylinder subject to constant heat flux

Hess, Cecil F.; Miller, Carl

doi:10.1016/0017-9310(79)90008-5

Cited by 37 publications

(12 citation statements)

References 4 publications

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“…These include electronic components design, air conditioning of buildings, design of storage of hot fluids in solar power plants and food sterilization (Hess & Miller, 1979;Lin & Akins, 1986;Ostrach, 1988). Liquid food material are sterilized in still retorts with steam flowing around the surface of the can.…”

Section: Introductionmentioning

confidence: 99%

CFD studies on natural convective heating of canned food in conical and cylindrical containers

Varma

Kannan

2006

Journal of Food Engineering

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Section: Introductionmentioning

confidence: 99%

CFD studies on natural convective heating of canned food in conical and cylindrical containers

Varma

Kannan

2006

Journal of Food Engineering

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“…Although the empirical correlations for the Nussle number are available in literature, they are mainly limited to simple geometries such as plates, cylinders, and circular disks. Considering that the heat transfer rate through the trapped fluids varies with the geometry and orientation of the enclosures, more precise way is needed to capture the detailed interaction between the finite-sized fluid volumes and the confined walls [10,11]. Moreover, the lack of available Nussle number for complex geometries (such as those found in subsea equipment) may complicate the FEA thermal analysis.…”

Section: Theoretical Considerationsmentioning

confidence: 99%

CFD Thermal Analysis of Subsea Equipment and Experimental Validation

Agrawal

Skeels

2011

All Days

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This paper presents a Computational Fluid Dynamics (CFD) approach for characterizing thermal performance of subsea equipment. With the CFD approach proposed, local convective coefficients between the subsea equipment and surrounding seawater are numerically determined in a coupled way; both well stream and various trapped fluids are modeled as real fluids with conduction and convection contributions; and temperature-dependent thermal properties of associated materials are also implemented. The CFD thermal approach has been validated against experimental data conducted at Southwest Research Institute with very good agreements, followed by successful applications in deepwater subsea tree, manifold, and flowline connector projects.

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“…Hess and Miller [5] carried out experiments using a laser-Doppler velocitymeter (LDV) to measure the axial velocity of a fluid contained in a cylinder subject to constant heat flux on the side walls. The results have been compared with available numerical results and showed good agreement.…”

Section: Introductionmentioning

confidence: 99%

Laminar air flow free convective heat transfer inside a vertical circular pipe with different inlet configurations

Mohammed

Salman

2007

Therm sci

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Free con vec tion heat trans fer has been ex per i men tally in ves ti gated for lami nar air flow in a ver ti cal cir cu lar pipe by us ing the bound ary con di tion of con stant wall heat flux in the ranges of lo cal Rayleight num ber (Ra L ) from 1.1·10 9 to 4.7·10 9 . The ex per i men tal setup was de signed for de ter min ing the ef fect of dif fer ent con fig u ra tions placed at the in let of a ver ti cal heated pipe, on the sur face tem per a ture, the lo cal and av er age heat trans fer co ef fi cients. The ap pa ra tus was made with an elec tri cally heated alu mi num pipe with length of 900 mm and in side di am e ter 30 mm. The in let con fig u ra tions included two cir cu lar pipes hav ing the same di am e ter as the heated pipe but with lengths of 600 and 1200 mm, sharp-edge and bell-mouth. It was found that the sur face tem per a ture along the pipe sur face for same heat flux would be higher val ues for in let con di tion with length of 1200 mm and would be lower val ues for bell-mouth in let con di tion. The re sults show that the lo cal Nusselt num ber Nu x and av er age Nusselt num ber ( ) Nu L val ues would be higher for bell-mouth in let con di tion and lower val ues for 1200 mm in let con di tion. For all in let con fig u ra tions, the re sults re veal that the Nu increases as the heat flux in creases. Em pir i cal cor re la tions have been proposed in a form of log Nu L vs. log Ra L for each case in ves ti gated and a general cor re la tion for all cases has been ob tained which re veals the ef fect of in let con di tions ex is tence on the free con vec tion heat trans fer pro cess in a ver ti cal cir cu lar pipe.

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Natural convection in a vertical cylinder subject to constant heat flux

Cited by 37 publications

References 4 publications

CFD studies on natural convective heating of canned food in conical and cylindrical containers

CFD studies on natural convective heating of canned food in conical and cylindrical containers

CFD Thermal Analysis of Subsea Equipment and Experimental Validation

Laminar air flow free convective heat transfer inside a vertical circular pipe with different inlet configurations

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