In the world of Computer-Aided Design (CAD), SolidWorks has long been the gold standard for parametric modeling. However, for engineers who need to understand not just how a part looks, but how it behaves in a real-world fluid environment, the conversation quickly turns to Computational Fluid Dynamics (CFD).
Flow Simulation Premium includes models for shear-thinning (pseudoplastic) and shear-thickening (dilatant) fluids, as well as viscoplastic materials that require a yield stress before they begin to move (like ketchup or toothpaste).
Standard simulation might show low-pressure zones, but only the Premium solver tracks the formation, transport, and implosion of vapor bubbles. It calculates the volume fraction of vapor and the erosive potential of the collapse. solidworks flow simulation premium
If your project involves anything that goos , pops bubbles , or flexes under pressure , the upgrade to Premium is not just an option—it is a necessity. For the rest of the world, the standard Flow Simulation package remains a capable, user-friendly entry point into fluid dynamics. Disclaimer: Features and naming conventions (e.g., "Premium") are based on standard Dassault Systèmes SolidWorks product tiers as of the current release cycle. Always verify specific module availability with your reseller.
As the fluid pushes against a solid (like a valve flapper or a sail), the solid deforms. That deformation changes the fluid boundary, which changes the pressure distribution, which pushes the solid again. Premium iterates these physics in real-time steps. In the world of Computer-Aided Design (CAD), SolidWorks
Use Case: A pump manufacturer testing a new impeller geometry. Premium simulation reveals cavitation clouds forming at the tip of the blades during high-RPM operation. By tweaking the blade angle virtually, the engineer eliminates the cavitation before cutting a single metal prototype, saving thousands in tooling costs. Perhaps the most powerful feature in the Premium suite is FSI. This allows the software to solve for fluid flow and structural stress simultaneously. While many tools offer "one-way" FSI (fluid pressure mapped to a solid), Premium supports two-way FSI for transient analysis.
Use Case: Designing a micro-pump for lab-on-a-chip devices. The flexible membrane deforms under hydraulic pressure. Standard simulation would assume a rigid wall, leading to inaccurate flow rates. Premium FSI captures the flutter and deflection, allowing precise prediction of pumping volume per cycle. One of the most underrated benefits of the Premium version is the "What If" study management . Because the solver is fully embedded in SolidWorks, engineers can use CAD parameters (like hole diameter or fin height) as design variables. The software can then run a "Design of Experiments" (DOE) automatically, ranking which geometric feature has the greatest impact on pressure drop or heat transfer. Limitations and Hardware Considerations No tool is perfect. SolidWorks Flow Simulation Premium operates on a Cartesian mesh with immersed boundary technology. While this is incredibly fast (no time-consuming body-fitted meshing), it struggles with extremely thin gaps or highly anisotropic geometries (like long, thin pipes versus large vessels). Standard simulation might show low-pressure zones, but only
Use Case: A medical device company designing a syringe for osteoarthritis treatment needs to simulate hyaluronic acid (a non-Newtonian fluid). Using Premium, engineers can accurately predict the injection force required, ensuring the device is usable by patients with limited hand strength. Cavitation occurs when local pressure in a liquid drops below its vapor pressure, causing bubbles to form and then violently collapse. This phenomenon can destroy impellers, valves, and propellers in minutes.