Defects in porous materials can change how fluids flow through them. These defects, like inclusions, disrupt the movement of fluid in the pores. This disturbance alters the path of fluid flow, affecting how sound waves travel through the material. The study uses Darcy's law to understand how these defects impact the tortuosity, or winding path, of fluid flow in the material. This research helps us understand how defects in porous materials can affect the movement of fluids and sound waves.