Hydra — water distribution network simulation engine.

This crate is the published library for the Hydra workspace. It re-exports the complete user-facing API so that downstream users depend on a single crate with all internal dependency versions pre-pinned and known to be compatible.

Quick start

use hydra_sdk::{io, Simulation, NodeQuantity, LinkQuantity};

let bytes = std::fs::read("network.inp").unwrap();
let network = io::parse(&bytes).unwrap();

let mut sim = Simulation::create();
sim.load(network).unwrap();
sim.run().unwrap();

for t in sim.snapshot_times() {
    let head = sim.get_node_result("J1", NodeQuantity::Head, t).unwrap();
    let flow = sim.get_link_result("P1", LinkQuantity::Flow, t).unwrap();
    println!("t={t:.0}s  head={head:.3}  flow={flow:.6}");
}