Thermal analysis of a concrete dam taking into account insolation, shading, water level and spillover

Žvanut, Pavel (avtor), Turk, Goran (avtor), Kryžanowski, Andrej (avtor)

This study presents a procedure for modeling the heat transfer process in a concrete dam, taking into account the time-varying boundary conditions on the upstream and downstream sides of the dam (i.e., the water level of the reservoir, spillover, insolation, and shading) which affect the temperature conditions of the dam. The large concrete arch-gravity Moste Dam (in North West Slovenia) was analyzed, where an automated system for the measurement of concrete and water temperatures, and for the monitoring of meteorological effects, was installed. Thermal analyses (1D and 2D) for non-linear and non-stationary heat conduction through solids were performed using a finite element method (FEM) based program, TeEx, which was complemented by two specially developed programs for determining the effects of convection and insolation, considering also the effect of shading. A 15-day period was analyzed, as well as a period of one year. It was found that the results of the performed analyses fitted in well with the experimentally determined concrete temperature measurements. The results showed that at the insolated side of the dam, the temperature gradient was largest in a very narrow area along the concrete surface, but the temperature did not stabilize shallower than at a depth of about 6 m. As part of the thermal analyses, uncertainty analyses of the results of the calculations were also performed.

• Jezik: Angleški jezik
• Ključne besede: concrete dam, heat transfer, solar radiation, shading, convection, thermal analysis, finite element method, temperature monitoring, temperature field, uncertainty
• Vrsta gradiva: Članek v reviji
• Tipologija: 1.01 - Izvirni znanstveni članek
• Organizacija: FGG - Fakulteta za gradbeništvo in geodezijo
• Status publikacije: Objavljeno
• Različica publikacije: Objavljena publikacija
• Leto izida: 2021
• Št. strani: 19 str.
• Številčenje: Vol. 11, iss. 2, art. 705
• PID: 20.500.12556/RUL-125102
• UDK: 624.012:627.82:621.8.035
• ISSN pri članku: 2076-3417
• DOI: 10.3390/app11020705
• COBISS.SI-ID: 46998275
• Datum objave v RUL: 04.03.2021

Gradivo je del revije

• Naslov: Applied sciences
• Skrajšan naslov: Appl. sci.
• Založnik: MDPI
• ISSN: 2076-3417
• COBISS.SI-ID: 522979353

Licence

• Licenca: CC BY 4.0, Creative Commons Priznanje avtorstva 4.0 Mednarodna
• Povezava: http://creativecommons.org/licenses/by/4.0/deed.sl
• Opis: To je standardna licenca Creative Commons, ki daje uporabnikom največ možnosti za nadaljnjo uporabo dela, pri čemer morajo navesti avtorja.
• Začetek licenciranja: 13.01.2021

Sekundarni jezik

• Jezik: Slovenski jezik
• Ključne besede: betonski jez, prenos toplote, sončno sevanje, senčenje, konvekcija, toplotna analiza, metoda končnih elementov, interakcija človek-stroj