FlowNet

• FlowNet is a Microsoft Windows-based computer-aided engineering program for fluid flow calculations. It automatically configures a simulation flow diagram and sorts out nodes or loop relationship while a user is drawing the diagram with a computer mouse. Flow elements and equipment items can be loaded to a flow segment by dragging from a carrousel and dropping to any flow segment without number limitations. Click any line or flow element to query information. Numerous dialog boxes let user enter/edit inputs and return simulation results.

fn –smartwater Version 2.103

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fn -PRO

All functional features are compatible with FlowNet.

Routinely handles network or loop problem without your defining nodes or loops.

Single phase and Vapor-Liquid Two Phase Flows.

Automatically configures simulation flow diagram while you are drawing it on screen.

Automatic flashing for downstream temperatures and pressures. Calculate enthaply at nodes. New

Print or export ASCII reports: Line Table

Drag and drop flow elements. Relief valves and headers sizing. Segment flow element/equipment count

View and edit all at once. Control valves sizing. Pressure Drop Summary Metric and conventional units. Thermodynamic correlations. New Equipment Operating Data Sheet.

No node or line number limitations. Component physical property data bank. New

Stream Properties. New Pressure Profile Plots. New

Technical Specifications: Pipe pressure drop : Darcy's equation with net expansion factor as seen in Crane. Adiabatic temperature: SRK equation of state for inerts, chemicals and petroleum fractions. Friction factor: Moody's chart/Colebrook equation (turbulent); 64/Re (laminar) Flow Resistance Coefficients: Fittings, Valves, Orifices, Nozzles: Built-in (2-K method) or Override Heater, Air Cooler, Heat Exchanger, Custom Item: User-supplied K Gravity flow Pumps, Hydraulic Turbines, Compressors, Expanders Incompressible or Compresssible Newtonian Flow Steady State

Few examples of application:

• Is pump flow evenly distributed to each of the parallel lines leading to the tube pass of the fired heater?

• Is your cooling water flow limited due to some unexpected resistance?

• How do you design or rate the relief header system to ensure that relief valves at different location of the same relief system will open to handle your calculated relief loads?

DI Water Distribution

Town Gas Distribution

Flow Distribution

Flare Gas System

Control Valve with Minimum Flow Bypass

Furnace Tube Coils

fn –Non-Newtonian

Version 2.2

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Flow Curve

0

10

20

30

40

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60

70

0 5 10 15 20 25 30 35 40 45

Shear Rate

Newtonian

Bingham

Power Law

Yield-Power

fn –manifold Version 1.1

Metering Stations Air Ducts Fuel Gas Distributors

Perforated Pipes, Spargers Air Distributors Contactor, Reactor, Distillation Column feed distributors

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(1) Frictional pressure drop:

(2) Pressure rise in the direction of flow due to a dividing flow:

where

=frictional fractor

= length of the flow segment between dividing flows

= diameter of the flow segment between dividing flows

= density of fluid

= velocity of the segment before the dividing flow

= velocity of the segment after the dividing flow

= an empirical constant

fn –manifold Version 1.1