• Difference between Head and Pressure

    For reference, have looked at previous answers including the following: https://communities.bentley.com/products/hydraulics___hydrology/f/haestad-hydraulics-and-hydrology-forum/54400/pressure-and-pressure-head-what-are-the-differences https://communities…
  • inserimento air valve dopo evento transitorio arresto pompa (ho bisogno di aiuto)

    buongiorno, dopo tante domande siamo quasi arrivati alla fine del problema. Dopo aver calcolato un'analisi transitoria di arresto di una pompa con numero di giri variabile ho problemi relativi alla cavitazione e quindi ho inserito dove ho questi problemi…
  • Partially Closed Valves in water supply system

    Hello, I'm modeling a high pressured water supply system full of partially closed valves (which people use as some kind of "prv's" to reduce pressure because they don't have enough money to buy it). The information they gave me is D(mm) of a valve,…
  • Como superar o mejorar las presiones negativas en las " presión extrema cabezales"(extreme pressure and heads)

    Hola, tengo presiones negativas en las "presión extrema cabezales"(extreme pressure and heads),el sistema es un modelamiento transitorio en HAMMER(adjunto archivo) Ademas me sale este mensaje 44845 "Con tanque unidireccional" "Pipe" "209" "LINEA…
  • Getting reliable results from Bentley Hammer

    Hi, I am modelling a simple system to compare the results to some codes that I have. But, despite having all the configurations similar to codes, I cannot get similar pressure fluctuation. Could you please have a look and let me know the reason? …
  • SIG Virtual Workshop: Bentley Hydraulics & Hydrology − December 20, 2017 - You're Invited!

    Don't miss the next Bentley Hydraulics & Hydrology Special Interest Group (SIG) virtual workshop on Wednesday, December 20, 2017 at 9 a.m. EST or 7 p.m. EST . The discussion will be led by Dr. Tom Walski P.E., Senior Product Manager, and will cover water…
  • Pressure difference

    Hello everyone, I´m using both, Hammer Bentley v8i and Pipephase to model a pipe system where the discharge pressure in result should be 429.9 psig in “Compute Initial Conditions”. When I reproduce the network using pipephase I obtain the expected…
  • Hammer Analysis in Raw Water Transmission System

    I'm trying to evaluate the need for surge protection at new well locations in a raw water transmission system. I have a network of 6 wells all pumping to the water treatment plant. I'm new to Water Hammer and surge analysis so I'm just looking for some…