Lin W.W.Liao Y.C.Lee D.J.2019-05-142019-05-14199602725673https://scholars.lib.ntu.edu.tw/handle/123456789/408092This is a continuation work of Lin and Lee (1996 National Heat Transfer Conference, Houston) while reporting the experimental results of multi-mode methanol flow boiling under atmospheric and subatmospheric pressures. An axial (discrete) heat flux distribution with neutral stability at which nucleate and film boiling can coexist steadily is identified under various system pressures and crossflow rates. Below this heat flux distribution, nucleate boiling mode is more stable. Above this distribution, film boiling becomes the more stable mode. An equal-area criterion based on the difference between bottom heat flux and surface boiling heat flux, and the wall superheat temperature relationship is employed for interpreting the experimental data. Effects of system pressure, mass flowrate, liquid subcooling and bottom heat flux on the relative stability of nucleate and film boiling modes are discussed.journal article2-s2.0-0030384325https://www.scopus.com/inward/record.uri?eid=2-s2.0-0030384325&partnerID=40&md5=c391942544bec78e4a7796d908f33abc