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(OP)
CADRE Flow was released on May 17, 2005.  This application is dedicated to the analysis of fluid flow networks including pipes, pumps, turbines, etc.  It will calculate pressure, flow rate, power, losses, pump and turbine performance parameters, joint forces, and many other results.  CADRE Flow is based on the finite element method and presented in a manner similar to CADRE Lite or CADRE Pro.

Jim Haynes

### RE: CADRE Flow 1 released

There is no stopping you Jim.  Keep up the good work.  Aren't we about due for a beer?

Nigel Waterhouse B Eng (Hon's)
Can-Am Aerospace,LLC, Canadian Aircraft Certification Centre
www.canamaero.com

### RE: CADRE Flow 1 released

Hi James,

I been using the demo and I have a quick question, I have a system which is a main line and 5 branches to nozzles at the ends, and I'm not quite sure how to specified the pump pressure the pump that I have is a 60l/m @ 5Bar, and I would like to know how can I do this on Cadre Flow.

Thanks

### RE: CADRE Flow 1 released

(OP)
Simply model a schematic system with a pump at the inlet, a main line, and 5 branches.  Assign lengths and pipe properties to all the elements.  Model the nozzles as short (zero length) pipes with a K loss factor.  The pump can be set with a 60l/m flow rate but the actual pressure across the pump will be established by the resistance of the system which is dictated by pipe sizes, pipe friction and mostly by the nozzles loss factors.  If you want to achieve the 5bar pressure you must increase the loss factor until and resolve until you get it.  That is equivalent to tightening down on the nozzles to create the back pressure.  Once set up and solved, you can read pressures and flows throuout the system model and create flow diagrams along any selected pipe path.  It reality, the actual flow rate of the pump will be dictated by the power and setting of the motor driving the pump and not by the pump specification.

Jim Haynes

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