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Cooling circuit flow rate for RTM (transient from start-up) result

The Cooling circuit flow rate for RTM (transient from start-up) result shows the flow rate of the coolant inside the cooling circuit in an RTM process. It is a time dependant result, from the beginning of the first mold preheating stage.

Using this result

This result can be used with the Cooling circuit Reynolds number for RTM (transient from start-up) result. It can be used to determine whether a flow rate is suitable to achieve turbulent coolant flow.

The flow rate itself is not the dominant factor in heat transfer, but increasing the flow rate can achieve the necessary Reynolds number. The flow rate is constant for a serial circuit, but not for a parallel circuit.

You can use this result to identify slow flows in parallel circuits. A parallel circuit with slow flow may lead to inferior local cooling, or heating efficiency, thus uneven temperature distribution in the mold.

You can also use this result to check that the coolant flow rate is adequate during all cooling stages for which active temperature control is desired. Check the analysis log for the actual time when the cooling stage changes.

Note: Timing of this result should correspond to the cooling stage durations set in the Cool (FEM) Settings page of the Process Settings Wizard dialog. The same timing can also be set in the RTM Cooling tab of the Reactive molding process settings dialog.

Things to look for

When viewing the circuit flow rate result, check that the sum of the coolant flow rates in all circuits is less than the coolant pump capacity.

Parent page: Cool analysis results

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