Extended Pipe Properties

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Diameter

The elements pipe, pump, valve and check valve have a length that is defined by their geometrical dimensions and a nominal diameter that you can adjust on the mask. These two values are used together with the viscosity, the density and the speed of flow to calculate the flow resistance. In fact it is a rough estimate only, since it depends on many more factors and to record all of them would go beyond the scope of TrySim. We tried to do without the calculation of the flow resistance but it turned out that a sufficient realistic behaviour of the fluids cannot be obtained without it. Therefore it is important to adjust the nominal diameter of all above mentioned elements at least order of magnitude wise to your machine. If you, for example, connect two containers with 1 l volume each to a pipe 100 mm in nominal diameter you will not be able to expect reasonable results.

In View|Options|Machine you can specify a default value which will be used for new elements.

Number of sections

In TrySim each pipe is treated as if it is composed of several (at least 2) sections. For most applications it will be sufficient to maintain the default of two sections, but if you want to simulate a siphon* for example, you will have to raise this number. Another necessity to raise the number of sections will be if it is important for your use that the pipes have got a limited volume and that the mixture of the fluid along the pipe can be changed. But do not select the number higher than necessary because this is payable by the simulation speed.

Warn if not connected

Normally there will be a warning when simulation is started and a pipe end which is not connected to a container or flange is found.

But if you want to fill dynamics that reach the place of filling during the simulation in general this control will be quite annoying. By deselecting this check box the control is switched off.