  Many numerical studies of blood flow impose a rigid wall assumption due to
the simplicity of its implementation compared to a full coupling to a solid
mechanics model. In this paper, we present a localised method for incorporating
the effects of elastic walls into blood flow simulations using the lattice
Boltzmann method. We demonstrate that our approach is able to more accurately
capture the flow behaviour expected in an elastic walled vessel than a rigid
wall model and achieves this without a loss of computational performance. We
also demonstrate that our approach can capture trends in wall shear stress
distribution captured by fully coupled models in personalised vascular
geometries.
