Concentration Polarization of High-Density Lipoprotein and Its Relation with Shear Stress in an In Vitro Model
Figure 3
(a) Schematic diagram of the numerical simulation model (four different viewsorangles). (b) The schematic diagram of the experiment recirculate system. Indicating points are upstream reservoir, carotid bifurcation vascular model, manometer, flow meter, downstream reservoir, centrifugal pump, and slide pole. Working process of flow chamber system: according to the requirement of the experiment, the water flow system was controlled by the water levels of the upstream and downstream chambers to maintain the stability of flow rate for a long time, and 12 L measuring cylinder was applied in the current experiment to measure the flow rate at the spillway of the downstream. The water level of the chamber was regulated with the moving plate to stabilize the difference of water level between the upstream and downstream. A grid plate was used to separate the upstream chamber to maintain the stable water flow in the chamber. The horizontal status of the experimental platform was measured and regulated with the leveling instrument. After flowing out from the downstream chamber, the circulating liquid flew into the upstream chamber again with the help of the centrifugal pump and took part in the circulation.
