توجه: محتویات این صفحه به صورت خودکار پردازش شده و مقاله‌های نویسندگانی با تشابه اسمی، همگی در بخش یکسان نمایش داده می‌شوند.
۱DPD Simulation of Electroosmotic Flow in Nanochannels for Newtonian and Non–Newtonian Fluids
نویسنده(ها): ،
اطلاعات انتشار: سومین کنفرانس نانوساختارها، سال
تعداد صفحات: ۴
This Paper presents simulation of electroosmotic phenomenon in nanochannels using the dissipative particle dynamics (DPD) method. Most of the last electroosmotic studies in nanochannels have been concentrated on the continuum Newtonian fluids. In reality, there are many nano\microfluidic applications in analyzing bio–fluids, which may not be categorized in continuum Newtonian fluid flow studies. In such applications, it is very important to control the fluid flow rate. Therefore, it is necessary to know how the Newtonian fluid behaviour differs from the non– Newtonian one. In this paper, we simulate the electroosmotic flow in mesoscopic scale using the DPD method. The results show that there is a complex behaviour of velocity profile governed by the non–Newtonian fluid in various conditions. The current numerical results are in very good agreement with other available results.<\div>

۲The effect of carbon nanotubes in increasing the hydrogen storage capacity
نویسنده(ها): ،
اطلاعات انتشار: سومین کنفرانس نانوساختارها، سال
تعداد صفحات: ۴
We use the molecular dynamics method to simulate hydrogen adsorption in finite bundles of single walled carbon nanotubes. We examine the effects of temperature,compression of gas, and nanotube diameter on increasing the capacity for hydrogen storage. To expand our conclusions, we extend our study to several different bundles including (4,4), (7,7), and (10,10) nanotubes. The study shows a significant increase in the hydrogen density near the surface of nanotubes. This increase is more pronounced in lower gas temperatures.<\div>

۳Heat Transfer in Nanochannel Devices Using DSMC
نویسنده(ها): ،
اطلاعات انتشار: سومین کنفرانس نانوساختارها، سال
تعداد صفحات: ۴
High speed rarefied gas flows through 2D nanochannels, with inlet Mach number 4.15 and inlet Knudsen number 0.148, are investigated using the Direct Simulation Monte Carlo (DSMC) method. Pressure boundary condition is implemented benefiting from the characteristics theory. We show that high back pressures have large effects in flow configuration, wall heat flux, high temperature region, and high velocity region. In particular, a normal shock appears at the inlet at very large back pressure, and change the upstream condition from supersonic flow to subsonic one. We also show that the results with no pressure condition at outflow, are the same as vacuum outflow condition. In low back pressure, vacuum, and no pressure conditions, the outflow remains supersonic, however it approaches to sonic and subsonic conditions as the back pressure increases. In supersonic outflow cases, expansion waves are clearly observed at the outlet.<\div>
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