  This paper reports a single component two dimensional pseudo-potential phase
change model using lattice Boltzmann methodto investigatethe surface heat flux
inpool boiling inside a solidcyclinder array.The array has been conceptualized
by placing square shaped solid structure inside the pool of liquid on the
heated surface.The entire saturated pool boiling curve for the flat surface
comprising of different nucleate boiling regimes from boiling incipience (BI)
to critical heat flux (CHF), transition boiling regime between CHF to
Leidenfrost point (LP) and the film boiling regime has been obtained
numerically. The effect of a solid cylinder array in the nucleate boiling heat
transfer process has been quantitatively evaluated and expressed in the form of
its corresponding boiling curve. It is found that the boiling incipience in
presence of a solid cylinder array occurs at a lower surface superheat compared
to that of a plane surface. Further, the solid array effectively delays the
onset of film boiling. Qualitative analysis of pool boiling phenomenon shows
the bubble dynamics in such solid structure including bubble nucleation,
coalescence, growth, entrapment, splitting, and escape to be very different
compared to a flat surface. Finally, two different cylinder arrays of porosity
90% and 98% are studied to examine the effect of porosity which is found to be
significant at higher values of surface superheat.
