Shawn Huang

March 18, 2013, 04:09 PM

It is quite often to hear some typical questions about InfoSurge. For example, is InfoSurge part of InfoWater? Why we need InfoSurge? What are differences between InfoSurge and InfoWater?

InfoSurge is quite different from InfoWater in many ways. The following describes a few differences, which will facilitate a deeper understanding about InfoSurge.

First, InfoWater is mainly used to model normal operations and master planning, while InfoSurge is used to model abnormal operations such as pump trip and valve closure.

Second, InfoSurge resides on InfoWater, which provides basic pipe network elements pipe/junction/pump/valve/tank/reservoir and creates initial conditions for surge runs.

Third, InfoSurge uses special configuration to simulate the effect of surge protection devices (SPD).

Fourth, InfoSurge and InfoWater use different numerical methods (see the following table).

......

InfoWater

InfoSurge

Model/Engine

EPANET

Wave Characteristic Method (WCM)

Governing Equations

Mass Conservation + Energy Equation

Mass Conservation + Momentum Equation

Numerical Scheme

Node-Based

Link-Based

Timestep

~minute/hour

~0.01 second

Flow

Steady State/EPS

Unsteady State/Transient/From Initial State to Final State

InfoSurge is quite different from InfoWater in many ways. The following describes a few differences, which will facilitate a deeper understanding about InfoSurge.

First, InfoWater is mainly used to model normal operations and master planning, while InfoSurge is used to model abnormal operations such as pump trip and valve closure.

Second, InfoSurge resides on InfoWater, which provides basic pipe network elements pipe/junction/pump/valve/tank/reservoir and creates initial conditions for surge runs.

Third, InfoSurge uses special configuration to simulate the effect of surge protection devices (SPD).

Fourth, InfoSurge and InfoWater use different numerical methods (see the following table).

......

InfoWater

InfoSurge

Model/Engine

EPANET

Wave Characteristic Method (WCM)

Governing Equations

Mass Conservation + Energy Equation

Mass Conservation + Momentum Equation

Numerical Scheme

Node-Based

Link-Based

Timestep

~minute/hour

~0.01 second

Flow

Steady State/EPS

Unsteady State/Transient/From Initial State to Final State