Uploads by Samarsden
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| Date | Name | Thumbnail | Size | Description |
|---|---|---|---|---|
| 15:41, 19 April 2020 | Recirculating Reactor.png (file) |  |
527 KB | Example of a flow chemistry chip with liquid segmented flow, R 1–3 reagents, S separating fluid (prevents premature reaction between R1 and R3.) |
| 15:19, 19 April 2020 | Recirculating Plugs.png (file) |  |
155 KB | Adapted from (Bringer, 2004). This shows the movement of both the plugs and the internal fluid. In the top system, along a straight channel there is radially symmetrical mixing with constant vortices, only mixing certain sections of the plug. In the bottom system, along a curved channel there is no longer symmetry. Along a curve, the outside of the plug has more surface area in contact with the wall while the inside has less, resulting in a larger vortex on the outside of the curve and a smal... |
| 15:05, 19 April 2020 | Recirculation.png (file) |  |
517 KB | Comparing mixing in flow cavities and in plugs moving through microchannels. Mixing by (a) steady, recirculating flow and (b) chaotic advection. (i) Mixing represented by schemes of flow in a flow cavity; (ii) images of flow in a flow cavity (reproduced with permission of Cambridge University Press from Ottino (1989)); and (iii) schemes of flow in plugs moving through (a) a straight and (b) a winding channel (Bringer, 2004) |
| 15:03, 19 April 2020 | Recirculation Example.png (file) |  |
477 KB | Comparing mixing in flow cavities and in plugs moving through microchannels. Mixing by (a) steady, recirculating flow and (b) chaotic advection. (i) Mixing represented by schemes of flow in a flow cavity; (ii) images of flow in a flow cavity (reproduced with permission of Cambridge University Press from Ottino (1989)); and (iii) schemes of flow in plugs moving through (a) a straight and (b) a winding channel (Bringer, 2004) |
| 14:46, 19 April 2020 | No Slip BC.png (file) |  |
48 KB | No-slip (a) and slip (b) boundary conditions. In no-slip boundary conditions, the speed of the fluid at the wall is supposed to be zero, whereas in slip boundary conditions there is relative movement between the wall and the fluid. Most fluid mechanical problems on liquids can be considered using no-slip boundary conditions if the characteristic length scale Lchar is bigger than 300 nm (Rapp, 2017) |
| 14:39, 19 April 2020 | Chaotic Advection Aref.png (file) |  |
33 KB | "Stirring of a 'blob' of marked fluid by 2D, time-dependant, laminar flow" (Aref, 2002) Demonstrating Chaotic Advection |
| 17:52, 17 April 2020 | Chaotic Advection.png (file) |  |
101 KB | "Stirring of a 'blob' of marked fluid by 2D, time-dependant, laminar flow" (Aref, 2002) |
| 17:32, 8 March 2020 | No Slip.jpg (file) |  |
50 KB | An example of how the no-slip boundary condition affects microfluidic flow, especially in the case of plug flow. |
