Numerical Study of Bubble Behavior under Gradient Flows during Subcooled Flow Boiling in Vertical Flow Channel

In this study, we examined the condensing behavior of single and multiple bubbles of pure steam in a subcooled liquid phase using a fully compressible two-phase homogeneous mixture method that is solved by an implicit dual-time preconditioned technique. The interface between the liquid and vapor phases was determined by the advection equations using a compressive high-resolution interfacing capturing method. The spurious current reduced near the interface, a smoothing filter is applied to the progress curvature calculation. The sensitivity study carried out to predict the empirical constant by using Lee’s mass transfer model. A comparison of the numerical and experimental results highlighted that the proposed model accurately predicted the behavior of the definite condensing bubble. Furthermore, the single and multiple bubble condensation behaviors were investigated for different initial subcooled temperatures, and bubble diameters under various gradient flow, such as velocity gradient, temperature gradient, and velocity and temperature gradients. Subsequently, the effect of multiple bubbles flows in different bubble pattern forms, and their condensation was studied. The coalescence of bubbles depends on the subcooled temperature. Furthermore, the bubble diameter, the gap between the bubbles, and the flow rate of the bubbles were also observed.

[1]  I. Eames Momentum Conservation and Condensing Vapor Bubbles , 2010 .

[2]  Ephraim M Sparrow,et al.  Direct contact condensation of steam bubbles in water at high pressure , 1977 .

[3]  Goon-Cherl Park,et al.  Interfacial heat transfer of condensing bubble in subcooled boiling flow at low pressure , 2011 .

[4]  B. Sundén,et al.  Numerical Modeling of Multiple Bubbles Condensation in Subcooled Flow Boiling , 2015 .

[5]  N. Zuber,et al.  The dynamics of vapor bubbles in nonuniform temperature fields , 1961 .

[6]  J. Joshi,et al.  Bubble Dynamics of a Single Condensing Vapor Bubble from Vertically Heated Wall in Subcooled Pool Boiling System:Experimental Measurements and CFD Simulations , 2012 .

[7]  Cong-Tu Ha,et al.  Numerical simulations of compressible flows using multi-fluid models , 2015 .

[8]  G. Park,et al.  Numerical study of condensing bubble in subcooled boiling flow using volume of fluid model , 2011 .

[9]  T. Harada,et al.  Dependence of bubble behavior in subcooled boiling on surface wettability , 2010 .

[10]  Horst-Michael Prasser,et al.  Steam bubble condensation in sub-cooled water in case of co-current vertical pipe flow , 2007 .

[11]  W. Park,et al.  Axisymmetric simulation of bubble condensation of pure steam and steam–air mixture , 2018, Nuclear Engineering and Design.

[12]  G. Su,et al.  Numerical investigation on bubble dynamics during flow boiling using moving particle semi-implicit method , 2010 .

[13]  D. R. Stinebring,et al.  A preconditioned Navier–Stokes method for two-phase flows with application to cavitation prediction , 2000 .

[14]  A. Okhotsimskii The thermal regime of vapour bubble collapse at different Jacob numbers , 1988 .

[15]  C. Merkle,et al.  Development of a fully-compressible multi-phase Reynolds-averaged Navier-Stokes model , 2001 .

[16]  Dong-Hyun Kim,et al.  A compressive interface-capturing scheme for computation of compressible multi-fluid flows , 2017 .

[17]  Yoshiaki Oka,et al.  Numerical computation of thermally controlled steam bubble condensation using Moving Particle Semi-implicit (MPS) method , 2010 .

[18]  Somchai Wongwises,et al.  Modeling of Subcooled Flow Boiling with Nanoparticles under the Influence of a Magnetic Field , 2019, Symmetry.

[19]  Thanh-Hoang Phan,et al.  Numerical simulation of air–steam mixture condensation flows in a vertical tube , 2018, International Journal of Heat and Mass Transfer.

[20]  Warn-Gyu Park,et al.  Numerical analysis of cavitating flow past an axisymmetric cylinder with comparison to experiments , 2013 .

[21]  C. Merkle,et al.  Computation of Multiphase Mixture Flows with Compressibility Effects , 2002 .

[22]  Eyitayo James Owoeye,et al.  Computational modeling of bubble coalescence in a high-pressure steam-water flow , 2017 .

[23]  Wenxi Tian,et al.  Two-dimensional numerical simulation of single bubble rising behavior in liquid metal using moving particle semi-implicit method , 2013 .

[24]  SalaiSargunan S Paramanantham,et al.  Numerical investigation of single and multiple bubble condensing behaviors in subcooled flow boiling based on homogeneous mixture model , 2018 .

[25]  Chirag R. Kharangate,et al.  Review of computational studies on boiling and condensation , 2017 .

[26]  W. Park,et al.  Numerical study on heat transfer effects of cavitating and flashing flows based on homogeneous mixture model , 2017 .

[27]  S. Revankar,et al.  Numerical simulation of bubble formation and condensation of steam air mixture injected in subcooled pool , 2017 .

[28]  Mohamad Yaghoub Abdollahzadeh Jamalabadi,et al.  Electromagnetohydrodynamic two-phase flow-induced vibrations in vertical heated upward flow , 2019, J. Comput. Des. Eng..

[29]  Cong-Tu Ha,et al.  Evaluation of a new scaling term in preconditioning schemes for computations of compressible cavitating and ventilated flows , 2016 .

[30]  A. Ranjbar,et al.  Numerical simulation of bubble behavior in subcooled flow boiling under velocity and temperature gradient , 2015 .

[31]  G. Su,et al.  Numerical investigation on coalescence of bubble pairs rising in a stagnant liquid , 2011 .

[32]  J. Brackbill,et al.  A continuum method for modeling surface tension , 1992 .

[33]  N. Samkhaniani,et al.  Numerical simulation of bubble condensation using CF-VOF , 2016 .

[34]  Th. Frank,et al.  Extension of the inhomogeneous MUSIG model for bubble condensation , 2011 .