Arjun looked out his window. It was raining now – the first serious rain of the monsoon. Water sheeted down the glass, and in the rippling distortions of the streetlight, he saw patterns. Streaklines. Pathlines. The dark outline of a woman holding an umbrella, her shape stretching and contracting like a vortex street.
And then he saw it.
"Everything is just a matter of pressure and velocity," Meera would whisper, pointing to a diagram of a venturi meter. "If you know the constraints, you can predict the outcome." The Transition Fluid Dynamics By Goyal And Gupta Pdf