Lin W.W.Lee D.J.2019-05-142019-05-14199803681653https://scholars.lib.ntu.edu.tw/handle/123456789/407883This study numerically investigates the stability characteristics of methanol boiling on a smooth or a porous-layer coated heated surface. 'Equilibrium heat flux' describes the relative stability between nucleate and film boiling modes over a nonuniformly heated surface with or without a porous layer. In addition, the equal-area criterion is extended from a surface covered entirely by the same boiling curve to a surface having two different boiling curves. Nucleate boiling mode is relatively more stable than that on a smooth surface. Moreover, coating a porous layer on boiling surface not only enhances nucleate boiling, but also introduces a safer operation.This study numerically investigates the stability characteristics of methanol boiling on a smooth or a porous-layer coated heated surface. `Equilibrium heat flux' describes the relative stability between nucleate and film boiling modes over a nonuniformly heated surface with or without a porous layer. In addition, the equal-area criterion is extended from a surface covered entirely by the same boiling curve to a surface having two different boiling curves. Nucleate boiling mode is relatively more stable than that on a smooth surface. Moreover, coating a porous layer on boiling surface not only enhances nucleate boiling, but also introduces a safer operation.journal article2-s2.0-0032128851https://www.scopus.com/inward/record.uri?eid=2-s2.0-0032128851&partnerID=40&md5=f447162edee03d4bea8cc621641ad5d6