Film flow measurements for high-pressure diabatic annular flow in tubes with various axial power distributions

Adamsson, Carl; Anglart, Henryk

doi:10.1016/j.nucengdes.2006.03.002

Cited by 26 publications

(2 citation statements)

References 6 publications

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“…Even if the correlation used and its implementation in the model via an UDF are not changed, going through the C language script of the UDF it has been noticed that the value of the steam velocity used in eq. 9and (10) in the previous model is the one in the interface between steam and liquid film. However, Okawa's correlation uses a bulk velocity value.…”

Section: Iii32 Entrainment Modelingmentioning

confidence: 99%

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CFD Modeling of Annular Flow With a Three-Field Approach

Raddino

Strömgren

Moigne

et al. 2018

Volume 8: Computational Fluid Dynamics (CFD); Nuclear Education and Public Acceptance

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Prediction of Critical Heat Flux and dryout is crucial for BWRs. Today 1-D models based on empirical correlations are used in order to model these phenomena. However, in order to get a better physical understanding and be able to model more complex geometries CFD modeling of annular flow is developed. The complexity of annular flows makes modeling of the different interactions involved challenging. In the present study a three-field approach is used in order to model annular flow; steam, liquid droplets and liquid film represent the different fields which are coupled to each other, i.e. both mass and momentum are exchanged between the modeled fields. The steam and droplets are modeled using Euler-Lagrangian multiphase CFD model and the liquid film is modeled through empirical models implemented at the wall boundary. The implemented model is validated against experimental data with good agreement. In order to enlarge the model validity range further improvements are needed especially concerning the entrainment modeling.

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Section: Iii32 Entrainment Modelingmentioning

confidence: 99%

“…In order to assess the accuracy of the model, experimental data taken by Adamsson and Anglart in 2006 are used [10]. A sketch of the experimental test section from the high-pressure two-phase flow loop at the Royal Institute of Technology (KTH) in Stockholm is shown in Figure 5.…”

Section: Iv1 Experimental Data From Adamsson and Anglartmentioning

confidence: 99%