The Averaging method assumes a steady state solution within the rotating region even for transient analyses.This approach cannot be used with high Mach number flow fields.Important to mention are a couple of limitations also associated with the averaging approach: If gravity needs to be considered in the analysis, it needs to be along the axis of rotation.The inlet and outlet flow fields should be axisymmetric with respect to the rotational axis this simply means the fluid needs to enter and exit the blades along their center axis.It is important to be aware of the following requirements when using the Averaging method: It’s important to be aware that using this method for anything other than geometry that reassembles a hub with axisymmetric blades may result in data that does not match reality this includes things like helixes or geometries with holes. It does a good job of producing results that correlate well with experimental data for these types of applications. The Averaging method, also sometimes called the Mixing Plane method, is an approach developed in order to approximate the flow of rotating blades such as fans, propellers, etc. The characteristics of the rotating components and the type of flow analyzed will determine which of these methods is appropriate. There are two additional formulations that can be used for a local rotating region, the Averaging method and the Sliding Mesh method.
#Solidworks flow simulation tutorial software#
The software will calculate the flow fields outside of the rotating reference frame and then transfer them to the rotating region at the boundary. The local rotating region requires that you specify a separate component that includes all the rotating components. This greatly increases the amount of applications where rotating reference frames within SOLIDWORKS Flow Simulation can be used. The local rotating region is very similar to the global except here you can specify a subset of components within the assembly that can be part of the rotating region. If the case comes up where all components are symmetric about the rotational axis but there is a stator (components that are not rotating), stator faces can be specified through the use of a moving wall boundary condition.
The global rotating region assumes you have a model that is completely symmetric about the rotating axis and all the components within the computational domain are rotating at the speed of the rotating reference frame.ĭue to the fact this type of rotating region has such narrow requirements, this type is often not suitable for most applications because most industrial applications have components that are not rotating or are not symmetric about the rotational axis. Both of these types are available for all fluid types Newtonian and Non-Newtonians fluids. There are two main types of rotating regions in Flow Simulation global and local rotating regions. This article is meant to be a comprehensive guide to everything related to rotating region problems within SOLIDWORKS Flow Simulation. This will include explaining the different types of rotating region problems as well as the best practices associated with each one of them. There are a lot of capabilities within the tool but, often times, there isn’t a lot of information about these capabilities. This can lead to your part warping out of shape or even cracking.SOLIDWORKS Flow Simulation offers some great tools for analyzing rotating region problems.
Non uniform filling and cooling can introduce stress. Most importantly, it reduces built in tension and stress as much as possible. It's also helpful in a larger surface area part to fill from the center of volume and vent at the outer most extents of the model. A properly designed part has enough gaps, vents, and avenues for the molten plastic to flow into and fill the part completely. When I have the point of material introduction at one end of the model and only allow for one avenue of venting, this is an exaggeration of the problems you may find. Think about trying to squeeze honey into your mold and what that honey would stick to. Depending on how thick it is, the harder it will be to completely pack into the mold. Different plastics have different characteristics while molten. Often, when forming a part, you'll be dealing with liquid material at one stage or another.