Pencil drawing style illustration of a transparent pipe seen from the outside

Pencil drawing style illustration of a transparent pipe seen from the outside. The pipe runs diagonally across the image from left to right.. Inside the pipe, A bright blue liquid flow is seen with white arrows indicating the direction of movement. Small colored particles or bubbles floating in liquid to represent mass flow. Simple background with pastel colors. Visual style similar to an educational diagram or infographic, not realistic."