徐治平2006-07-252018-06-282006-07-252018-06-282004http://ntur.lib.ntu.edu.tw//handle/246246/9368本研究中考慮電解質溶液在表面覆蓋 離子可穿透薄膜之橢圓微管中流動現象。 文中探討系統之體積流率、總電流、電黏 度效應與流場電位。結果顯示當中離子強 度時，這些量為幾何形狀比之函數，且有 一極大或極小值。此現象在一表面無覆蓋 離子可穿透薄膜之橢圓微管中並無出現。The electrokinetic flow of an electrolyte solution in an elliptical microchannel covered by an ion-penetrable charged membrane layer is examined theoretically. The present analysis extends previous results in that a two-dimensional problem is considered. The system under consideration simulates the flow of a fluid, for example, in vein. The electroosmostic volumetric flow rate, the total electric current, the streaming potential, and the electroviscous effect of the system under consideration are evaluated. We show that, for a constant hydraulic diameter, the variations of these quantities as a function of the aspect ratio of the microchannel may have a local minimum or a local maximum at a medium level of ionic strength, which depends on the thickness of the membrane layer. For a constant cross-sectional area, the electroosmostic volumetric flow rate, the total electric current, and the streaming potential increase monotonically with an increase in the aspect ratio. The electroviscous effect decreases monotonically with an increase in the aspect ratio.application/pdf125477 bytesapplication/pdfzh-TW國立臺灣大學化學工程學系暨研究所微流管電動力現象電黏滯效應幾何形狀比microchannelelectrokinetic phenomenonelectroviscous effectaspect ratioreporthttp://ntur.lib.ntu.edu.tw/bitstream/246246/9368/1/922214E002001.pdf