Fluid Stream Modelling

TAITherm- Fluid Streams Modelling

Introduction :

Fluid streams can be used as parts of large fluid system models via advection links to other fluid parts or streams. Mainly used in CFD-Thermal calculation of Exhaust pipes etc.


                                                       Fig :1.Model Feeder Pipe

Creation of Fluid Streams

1. Select the Add Part button and enter the new part name “Fluid Stream”.

2. Select {Calculated} as the Temperature Type (this is the default) and  [Fluid Stream] as the Part Type.    

3. Engine Oil, Unused (Liquid)] as the fluid material ( Refer to Fig :2)



                                                      Fig :2 .Part management and Property arrangement


4. Enter 10 as the Number of Nodes in the Fluid Stream. Select the Node Biasing button, use Center node biasing with a Proportion of 5.Select {Bypass SS} as the Initial Temperature and enter a temperature of 25 Celsius on that part and to use the steady state temperature to seed the transient calculation.

5. Press the Add Button under Advection Links. Select [Oil Source Temperature] as the Upstream PartSelect the {Volume} radio button under Flow Type.

6. Select the {Curve} radio button under the Flow Rate section and select Oil Inlet as the curve (Refer Fig :3)


                                                           Fig :3- Boundary creation &  manipulation


Define Fluid Stream Boundaries

Select the appropriate points to decide on the inlet and outlet of the pipe.

This is followed by select the part where the fluid streams should be made (as shown in Fig :4).


                                                  Fig :4- Boundary creation &  manipulation

Then apply Generate node option ,fluid streams will be created in a continuous node biasing fashion ( as shown in Fig :5)



                                                    Fig:5-Fluid stream creation