Steady and unsteady simulations for annular internal condensing flows, part II: Instability and flow regime transitions
Document Type
Article
Publication Date
6-2-2016
Abstract
© 2016, Taylor & Francis. The algorithm for the accurate and relevant numerical solution technique given in part I of this article is used to obtain the results for shear-driven annular condensing flows in horizontal channels—with or without transverse gravity. The unsteady wave simulation capability is used to implement a unique non-linear stability analysis. The steady and unsteady simulations’ results for millimeter scale (hydraulic diameter 4–8�mm), modest mass-flux (5–120�kg/m2/s), and refrigerant vapors (FC-72, R113, etc.) are used to mark the approximate location beyond which the annular regime typically transitions to a non-annular regime. These are used to develop correlations for local heat transfer coefficients and the approximate length that marks the transition from annular to non-annular regimes.
Publication Title
Numerical Heat Transfer, Part B: Fundamentals
Recommended Citation
Naik, R.,
&
Narain, A.
(2016).
Steady and unsteady simulations for annular internal condensing flows, part II: Instability and flow regime transitions.
Numerical Heat Transfer, Part B: Fundamentals,
69(6), 495-510.
http://doi.org/10.1080/10407790.2016.1138804
Retrieved from: https://digitalcommons.mtu.edu/michigantech-p/9368