Question 1

What is water hammer?

Accepted Answer

Water hammer is a pressure surge in a pressurized pipeline when flow changes suddenly, such as a fast valve closure, pump trip, or pipe burst. It is a type of hydraulic transient.

Question 2

Can I run water transient simulation in the browser?

Accepted Answer

Yes. TSNet-TS runs Method of Characteristics (MOC) transient simulation in your browser. Upload an EPANET .inp file or try an example network — no server-side solver is required for the demo.

Question 3

Does TSNet-TS support EPANET .inp files?

Accepted Answer

Yes. TSNet-TS loads EPANET water distribution network models (.inp) and simulates valve closure, pump trip, pipe burst, leaks, demand pulse, and surge tanks.

Question 4

What is the difference between DD and PDD?

Accepted Answer

DD (demand-driven) assumes junctions take their full assigned demand. PDD (pressure-dependent demand) reduces demand when pressure is low, which is more realistic for leaks and bursts. Both use EPANET for the steady-state start.

Question 5

Is TSNet-TS free?

Accepted Answer

The online demo is free for noncommercial use. The TypeScript engine is published as @tsnet-ts/ts-net on npm under the MIT license.

Online water hammer and transient simulation