Peter Jellitsch (kind of) draws the wind. Which is hard. Maybe you’ve seen pretty terrible representations of the wind in sections meant to illustrate cross-ventilation or in animations of how fans work, but these are better. What Jellitsch actually does is use wind analysis software to generates these fluid surfaces that he renders by hand. In his own words:
“‘The hand drawing’ is an essential part of my work. It allows me a physical acquisition of invisible digital calculatory work and includes, of course, mistakes and instinctive extension.”
What’s remarkable about these drawings, to me, is how such a simple drawing technique can achieve such visual depth. Essentially these drawings are a kind of hatching, but bear almost no resemblance to the hatching patterns that fill cross sections to delineate what is concrete or what is brick. This is the wind, and in tall buildings that use this kind of software analysis, the lateral forces from wind can become as important as gravity.