Numerical simulation of condensation induced waterhammer
Samo za registrovane korisnike
2006
Konferencijski prilog (Objavljena verzija)
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Prikaz svih podataka o dokumentuApstrakt
A numerical model for the simulation and analyses of the condensation induced waterhammer is presented. The modelling approach is based on the one-dimensional homogeneous two-phase flow model, tracking of the liquid-vapour interface and modelling of the direct condensation on subcooled liquid. The mass, momentum and enthalpy conservation equations are solved with the method of characteristics. The interface of vapour and liquid column is approximated with the cross section area of the flow channel. The liquid-vapour interface tracking is achieved with a third-order accurate solving of the enthalpy equation in space, where the thermodynamic quality (calculated from the enthalpy value) determines the presence of liquid, two-phase mixture or vapour. Heat transfer of condensation latent heat from the vapour-liquid interface to the subcooled liquid is described with a delta function term in enthalpy conservation equation, which integrates the heat flux at the interface. The transient fricti...on is included in the momentum equation due to intensive accelerations of the liquid column. The model is applied to simulations and analyses of condensation induced water hammer in experimental facilities and of an interface tracking benchmark test. Numerical results are validated with measured data and verified with results of other computer codes and analytical solutions.
Ključne reči:
condensation / waterhammer / method of characteristicsIzvor:
Međunarodna konferencija Elektrane 2006, Vrnjačka Banja, Srbija, 2006., 2006Izdavač:
- Društvo termičara Srbije
Kolekcije
Institucija/grupa
Mašinski fakultetTY - CONF AU - Prica, Sanja AU - Stevanović, Vladimir AU - Maslovarić, Blaženka PY - 2006 UR - https://machinery.mas.bg.ac.rs/handle/123456789/7654 AB - A numerical model for the simulation and analyses of the condensation induced waterhammer is presented. The modelling approach is based on the one-dimensional homogeneous two-phase flow model, tracking of the liquid-vapour interface and modelling of the direct condensation on subcooled liquid. The mass, momentum and enthalpy conservation equations are solved with the method of characteristics. The interface of vapour and liquid column is approximated with the cross section area of the flow channel. The liquid-vapour interface tracking is achieved with a third-order accurate solving of the enthalpy equation in space, where the thermodynamic quality (calculated from the enthalpy value) determines the presence of liquid, two-phase mixture or vapour. Heat transfer of condensation latent heat from the vapour-liquid interface to the subcooled liquid is described with a delta function term in enthalpy conservation equation, which integrates the heat flux at the interface. The transient friction is included in the momentum equation due to intensive accelerations of the liquid column. The model is applied to simulations and analyses of condensation induced water hammer in experimental facilities and of an interface tracking benchmark test. Numerical results are validated with measured data and verified with results of other computer codes and analytical solutions. PB - Društvo termičara Srbije C3 - Međunarodna konferencija Elektrane 2006, Vrnjačka Banja, Srbija, 2006. T1 - Numerical simulation of condensation induced waterhammer UR - https://hdl.handle.net/21.15107/rcub_machinery_7654 ER -
@conference{ author = "Prica, Sanja and Stevanović, Vladimir and Maslovarić, Blaženka", year = "2006", abstract = "A numerical model for the simulation and analyses of the condensation induced waterhammer is presented. The modelling approach is based on the one-dimensional homogeneous two-phase flow model, tracking of the liquid-vapour interface and modelling of the direct condensation on subcooled liquid. The mass, momentum and enthalpy conservation equations are solved with the method of characteristics. The interface of vapour and liquid column is approximated with the cross section area of the flow channel. The liquid-vapour interface tracking is achieved with a third-order accurate solving of the enthalpy equation in space, where the thermodynamic quality (calculated from the enthalpy value) determines the presence of liquid, two-phase mixture or vapour. Heat transfer of condensation latent heat from the vapour-liquid interface to the subcooled liquid is described with a delta function term in enthalpy conservation equation, which integrates the heat flux at the interface. The transient friction is included in the momentum equation due to intensive accelerations of the liquid column. The model is applied to simulations and analyses of condensation induced water hammer in experimental facilities and of an interface tracking benchmark test. Numerical results are validated with measured data and verified with results of other computer codes and analytical solutions.", publisher = "Društvo termičara Srbije", journal = "Međunarodna konferencija Elektrane 2006, Vrnjačka Banja, Srbija, 2006.", title = "Numerical simulation of condensation induced waterhammer", url = "https://hdl.handle.net/21.15107/rcub_machinery_7654" }
Prica, S., Stevanović, V.,& Maslovarić, B.. (2006). Numerical simulation of condensation induced waterhammer. in Međunarodna konferencija Elektrane 2006, Vrnjačka Banja, Srbija, 2006. Društvo termičara Srbije.. https://hdl.handle.net/21.15107/rcub_machinery_7654
Prica S, Stevanović V, Maslovarić B. Numerical simulation of condensation induced waterhammer. in Međunarodna konferencija Elektrane 2006, Vrnjačka Banja, Srbija, 2006.. 2006;. https://hdl.handle.net/21.15107/rcub_machinery_7654 .
Prica, Sanja, Stevanović, Vladimir, Maslovarić, Blaženka, "Numerical simulation of condensation induced waterhammer" in Međunarodna konferencija Elektrane 2006, Vrnjačka Banja, Srbija, 2006. (2006), https://hdl.handle.net/21.15107/rcub_machinery_7654 .