Ιδρυματικό Αποθετήριο
Πολυτεχνείο Κρήτης
Πολυτεχνείο Κρήτης
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| URI | http://purl.tuc.gr/dl/dias/7B314A99-AD16-45A2-99BF-C18BF73DEF9B | - |
| Αναγνωριστικό | https://doi.org/10.1115/IMECE2018-86831 | - |
| Αναγνωριστικό | https://asmedigitalcollection.asme.org/IMECE/proceedings-abstract/IMECE2018/52125/V08BT10A005/275478 | - |
| Γλώσσα | en | - |
| Μέγεθος | 10 pages | en |
| Τίτλος | Applying a radiative heat transfer finite-volume methodology to a geometrically complex furnace | en |
| Δημιουργός | Lygidakis Georgios | en |
| Δημιουργός | Λυγιδακης Γεωργιος | el |
| Δημιουργός | Leloudas Stavros | en |
| Δημιουργός | Λελουδας Σταυρος | el |
| Δημιουργός | Nikolos Ioannis | en |
| Δημιουργός | Νικολος Ιωαννης | el |
| Εκδότης | American Society of Mechanical Engineers | en |
| Περίληψη | Considering that radiative heat transfer is encountered in many engineering and industrial applications, significant efforts have been applied during the last decades for the development of relevant numerical methodologies. In this study, such an in-house academic radiative heat transfer method is presented in brief, whereas it is evaluated against a geometrically complex furnace. The proposed solver depends on the time-dependent RTE (Radiative Transfer Equation) aiming to predict radiative heat transfer in general enclosures through absorbing, emitting, and either isotropically or anisotropically scattering gray media. Spatial discretization is obtained with a node-centered finite-volume method on three-dimensional tetrahedral or hybrid unstructured grids. Increased accuracy is succeeded with a second-order scheme. The final steady-state solution is obtained with an iterative procedure, based on an explicit second-order accurate in time four-stage Runge-Kutta method and accelerated mainly via parallel processing and an agglomeration multigrid scheme. The proposed solver is assessed against an experimental three-dimensional furnace case, incorporating many of the geometric complexities encountered in industrial furnace systems. The predicted numerical results, regarding the incident wall fluxes, are compared with the available experimental data, revealing a satisfactory agreement and consequently demonstrating the proposed code's potential to predict accurately radiative heat transfer in complex enclosures. | en |
| Τύπος | Πλήρης Δημοσίευση σε Συνέδριο | el |
| Τύπος | Conference Full Paper | en |
| Άδεια Χρήσης | http://creativecommons.org/licenses/by/4.0/ | en |
| Ημερομηνία | 2019-10-07 | - |
| Ημερομηνία Δημοσίευσης | 2018 | - |
| Θεματική Κατηγορία | Experimental three-dimensional furnace | en |
| Θεματική Κατηγορία | Node-centered finite-volume method | en |
| Θεματική Κατηγορία | Radiative heat transfer | en |
| Θεματική Κατηγορία | Second-order accuracy | en |
| Θεματική Κατηγορία | Time-dependent RTE | en |
| Βιβλιογραφική Αναφορά | G.N. Lygidakis, S.N. Leloudas and I.K. Nikolos, "Applying a radiative heat transfer finite-volume methodology to a geometrically complex furnace," in ASME 2018 International Mechanical Engineering Congress and Exposition, 2018. doi: 10.1115/IMECE2018-86831 | en |
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