Description
A varicose vein is one in which the valves no longer function; therefore blood collects in the vein and it no longer contributes to the body's vascular system. Varicose veins are not only uncomfortable, but can lead to medical complications such as ulcers and blood clots. In foam sclerotherapy, a liquid foam containing sclerosant is injected into the vein to displace the blood and to trigger vein collapse. The choice of foam parameters such as liquid fraction and bubble size are critical in ensuring that the blood is displaced and that the foam then disperses quickly.Foams are used in the process because of their yield stress. We model foams as Bingham fluids to predict optimal parameter values for sclerotherapy. To allow investigation of realistic vein geometries we develop two-dimensional FEM calculations of uniformly curved and sinusoidal-shaped channels. We determine how the efficiency of the displacement process is affected by the Bingham number, representing the foam's yield stress, as well as the shape of the channel and wall slip.
| Period | 09 Apr 2025 |
|---|---|
| Event title | INNFM-BSR Spring Meeting on Rheology |
| Event type | Conference |
| Degree of Recognition | International |