Boundary Conditions Accuracy Effect on the Numerical Simulations of the Thermal Performance of Building Elements
Numerical simulation is widely used in the field of computational building physics for the definition of the thermal performance of building elements. An integral component of numerical simulation using finite elements is the boundary conditions, which, in the case of simulating the thermal performa...
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| Format: | Article |
| Language: | English |
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MDPI AG
2018-06-01
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| Series: | Energies |
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| Online Access: | http://www.mdpi.com/1996-1073/11/6/1520 |
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| author | Paris A. Fokaides Angeliki Kylili Ioannis Kyriakides |
| author_facet | Paris A. Fokaides Angeliki Kylili Ioannis Kyriakides |
| author_sort | Paris A. Fokaides |
| collection | DOAJ |
| description | Numerical simulation is widely used in the field of computational building physics for the definition of the thermal performance of building elements. An integral component of numerical simulation using finite elements is the boundary conditions, which, in the case of simulating the thermal performance of a building element, are usually expressed in terms of the external surface temperature as a function of time. The purpose of this study is to examine the effect of the accuracy of the boundary conditions on the thermal performance simulation of building elements. The assumption that the temperature versus time is a sinusoidal function, applied in standard methods, is comparatively assessed with the actual function for diverse climatic conditions using finite elements simulation. The findings of the analysis indicate that the sinusoidal function fails to accurately simulate real boundary conditions. The originality of this study lies within the adoption of a signal reconstruction algorithm, which follows a novel approach by reconstructing the actual temperature versus time signal for the simulation of the actual boundary conditions. |
| first_indexed | 2024-04-13T08:41:15Z |
| format | Article |
| id | doaj.art-7d5caab48a9e482291bd4261aa046502 |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-04-13T08:41:15Z |
| publishDate | 2018-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-7d5caab48a9e482291bd4261aa0465022022-12-22T02:53:54ZengMDPI AGEnergies1996-10732018-06-01116152010.3390/en11061520en11061520Boundary Conditions Accuracy Effect on the Numerical Simulations of the Thermal Performance of Building ElementsParis A. Fokaides0Angeliki Kylili1Ioannis Kyriakides2School of Engineering, Frederick University, Nicosia 1036, CyprusSchool of Engineering, Frederick University, Nicosia 1036, CyprusDepartment of Electrical and Computer Engineering, University of Nicosia, Nicosia 2147, CyprusNumerical simulation is widely used in the field of computational building physics for the definition of the thermal performance of building elements. An integral component of numerical simulation using finite elements is the boundary conditions, which, in the case of simulating the thermal performance of a building element, are usually expressed in terms of the external surface temperature as a function of time. The purpose of this study is to examine the effect of the accuracy of the boundary conditions on the thermal performance simulation of building elements. The assumption that the temperature versus time is a sinusoidal function, applied in standard methods, is comparatively assessed with the actual function for diverse climatic conditions using finite elements simulation. The findings of the analysis indicate that the sinusoidal function fails to accurately simulate real boundary conditions. The originality of this study lies within the adoption of a signal reconstruction algorithm, which follows a novel approach by reconstructing the actual temperature versus time signal for the simulation of the actual boundary conditions.http://www.mdpi.com/1996-1073/11/6/1520building envelopenumerical simulationboundary conditionfinite element methodsinusoidal function |
| spellingShingle | Paris A. Fokaides Angeliki Kylili Ioannis Kyriakides Boundary Conditions Accuracy Effect on the Numerical Simulations of the Thermal Performance of Building Elements Energies building envelope numerical simulation boundary condition finite element method sinusoidal function |
| title | Boundary Conditions Accuracy Effect on the Numerical Simulations of the Thermal Performance of Building Elements |
| title_full | Boundary Conditions Accuracy Effect on the Numerical Simulations of the Thermal Performance of Building Elements |
| title_fullStr | Boundary Conditions Accuracy Effect on the Numerical Simulations of the Thermal Performance of Building Elements |
| title_full_unstemmed | Boundary Conditions Accuracy Effect on the Numerical Simulations of the Thermal Performance of Building Elements |
| title_short | Boundary Conditions Accuracy Effect on the Numerical Simulations of the Thermal Performance of Building Elements |
| title_sort | boundary conditions accuracy effect on the numerical simulations of the thermal performance of building elements |
| topic | building envelope numerical simulation boundary condition finite element method sinusoidal function |
| url | http://www.mdpi.com/1996-1073/11/6/1520 |
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