Cavitation Around Wedge CFD Simulation, Numerical Paper Validation
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€130.00
When a solid body moves through shallow water with a cavity, the shape and hydrodynamic performance of the cavity, as well as the motion, attitude, and stability of the body are greatly influenced by both the flexible free surface and the rigid bottom wall. Our current study delves into previously unexplored aspects of natural cavitation flow around a 2-D wedge in shallow water, yielding new insights into this phenomenon. As the title suggests, the CFD study benefits from a precious reference paper entitled “ PROPERTIES OF NATURAL CAVITATION FLOWS AROUND A 2-D WEDGE IN SHALLOW WATER” and we seek validation through it.
Figure 1: Drag and Lift coefficients plot
Simulation Process
This study considers both free surface and underwater regions. It asks for Volume Of Fluid (VOF) multiphase model. Bear in mind that the cavitation phenomenon leads to the generation of water vapor as well. It means a three-phase multiphase approach must be solved. The proper domain division is crucial. This is why a suitable blocking is initially done using Design Modeler to help us produce structured grid. Last but not the least, Schnerr-Sauer cavitation approximation governs the mass transfer.
Figure 2: Dense grid around the wedge
Post-processing
The research involved simulating cavitation around a wedge submerged in water to verify findings from the reference paper. The goal was to compare drag and lift coefficients at a cavitation number of 0.157. The previous study had reported drag and lift coefficients as 0.071 and 0.0855, respectively. In our simulation, we obtained values of 0.0712 for drag and 0.0873 for lift. These results demonstrate a small margin of error, with the drag coefficient having an error of roughly 0.28% and the lift coefficient having an error of around 2.10%. This high level of precision highlights the trustworthiness of our simulation model in replicating the physical behavior of cavitation around a wedge.
Cavitation Number=0.157 | Cd | Cl |
Reference Paper | 0.071 | 0.0855 |
CFD Simulation | 0.0712 | 0.0873 |
Error | 0.28% | 2.1% |
We pride ourselves on presenting unique products at CFDLAND. We stand out for our scientific rigor and validity. Our products are not based on guesswork or theoretical assumptions like many others. Instead, most of our products are validated using experimental or numerical data from valued scientific journals. Even if direct validation isn’t possible, we build our models and assumptions on the latest research, typically using reference articles to approximate reality.
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