Abstract
Cavitation is a complex phenomenon to measure, depending on site conditions in specific regions of the Earth, where there is water with various physical properties. The development of ship and propulsion technology is currently intended to further explore territorial waters that are difficult to explore. Climate differences affect the temperature and physical properties of water on Earth. This study aimed to determine the effect of cavitation related to the physical properties of water. Numerical predictions of a cavitating propeller in open water and uniform inflow are presented with computational fluid dynamics (CFD). Simulations were carried out using Ansys. Numerical simulation based on Reynolds-averaged Navier–Stokes equations for the conservative form and the Rayleigh–Plesset equation for the mass transfer cavitation model was conducted with turbulent closure of the fully turbulent K-epsilon (k-ε) model and shear stress transport (SST). The influence of temperature on cavitation extension was investigated between 0 and 50 ° C . The results obtained showed a trend of cavitation occurring more aggressively at higher water temperature than at lower temperature.
Highlights
Along with the development of technology, the development of transportation facilities for people and logistics can be done quickly at large scale
We investigated the flow around a model scale propeller called the Potsdam Propeller Test Case (PPTC), in this study PPTC model VP1304, in oblique flow
The results were consistent with experiments conducted by Alarabi [10], who observed the effect of water temperature on centrifugal pumps under cavitation conditions
Summary
Along with the development of technology, the development of transportation facilities for people and logistics can be done quickly at large scale. The fluid fraction of both water and vapor will move to a higher pressure region. This makes the bubbles implode and generate an intense explosion [6]. Jan Meijn [12], who used numerical CFX-TASCflow (AEA Technology, Waterloo, Canada) with constant enthalpy vaporization (CEV) model, found that different types of fluids greatly affect the growth pattern of cavitation bubbles, and stability of turbulent model is an important parameter to consider. Chivers [13], on other hand, who used numerical and experimental studies, noted that at higher operational water temperatures, total upstream head minus vapor pressure, which can be achieved, was lower. To assess the influence of transition turbulent flow, first we used the shear stress transport (SST) with automatic wall treatment, we applied the standard k-ε for the fully turbulent model with scalable wall function
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