Question

(2) Nusselt number of horizontal enclosures with a hot top plate and cold bottom plate is 1. Explain why. (2 Pts]

Answer 1

2) Nusseut nunbea al horizontal enclosures with a hot bottom plat plate and Cold ) explain as the atio of nusselt numbesa is defined Gewraly *ranse Convective heat toansker to Conductive heat heat transfer by and Convechon Conduction there can be in fuids It 9iven by mathematically hLC Nu Nu Nusselt number Coetbicient o Convechon heat transfe Leugeh Conductiviby Fleid Lc haacteustc undesstand ohat is Convective heat transfer Nouo onvechive heat transtu is transfes of eneagy rom body id the hot sua ces on the as fncudes o heat ít ncreases in convective heat transge2 So the top plate is of hot. ii contains hiq hes tempeiati Conductive heat transfe Conductive heat transfes is transge ot eneagy . tts depends tourier Law and its pod po rtonal to the tempesalun on (between hot end плnsp and the Cold end).

) Convective heat transker Coebicieut on cold fluid 8ide flouo velo citytuTbulen ce , feid viscosiy depемdя Convective heai tanske Coefficieut on hot fluid side Conduchve heat transter s Cold Fluid side on fouocoed in folloeong nusselt alooue Statement are So The nusseut increases heat tiansfei Lonvecon is number £s not ess than 1 . Convective hlat iranses than Conductive heat gretes tRansfa