[[alternative]]Numerical Simulation of Incompressible Flow in Long Microchannels

[[abstract]]本研究主要是針對三維不可壓縮層流長微流道中，溫度效應對液態j紅燈流力與熱傳現象影響的探討，因此將研究重心放在摩擦與熱傳特性上。本研究發現受到溫度效應的影響，使得f.Re 較不考慮溫度效應時小，且黏滞係數改變進而造成雷諾數的變化較傳統大尺寸流道來得大，而增加管壁溫度或熱通量的輸入皆會使得磨擦因子降低。在熱傳方面，同樣受到溫度效應的影響，其熱傳效果較不考慮、溫度效應日幸好，而深寬比越大，熱傳效果也越好。此外在溫度效應影響下，等溫壁面條件的Nusselt number 會隨著雷諾數的加大而且良著增加，但固定熱通量條件的Nusselt number 卻不會改變。[[abstract]]The objective of this research is to investigate numerically the effect of temperature on friction and heat transfer characteristics of incompressible flow in microchannels. It was found that the temperature effect reduces f · Re .The reduction in iscosity due to rising temperature increases Reynolds number.Increasing wall temperature or heat flux reduces friction factor. In the heat transfer characteristics, the Nusselt number is increased by taking the temperature effect into account. Nusselt number also increases with increasing channel aspect ratio.[[sponsorship]]淡江大學航空太空工程學系[[cooperationtype]]Y[[conferencetype]]兩岸[[conferencetkucampus]]淡水校園[[conferencedate]]20060314~20060315[[booktype]]紙本[[iscallforpapers]]Y[[conferencelocation]]臺北縣, 臺