Numerical simulation analysis of spiral cavitation heat generator

Abstract A spiral cavitation heat generator is a new type of cavitation device. This article simulates and analyzes the spiral cavitation heat generator, uses Solidwork software to model, and the FLUENT software to simulate and calculate the distribution of flow field, temperature, and turbulent kinetic energy inside the spiral cavitation generator. When the outlet pressure is constant, the inlet pressure has an impact on the cavitation flow field, and within a certain range, the inlet pressure increases. The higher the maximum vapor content in the cavitation zone, the better the cavitation performance of the corresponding cavitation generator. The temperature of the liquid has an impact on the cavitation process. As the temperature increases, the saturated vapor pressure of the liquid increases, making it easier for cavitation to occur and bubbles to grow, thereby enhancing the cavitation effect; However, as the temperature increases, the amount of dissolved gas in the liquid decreases, thus reducing the number of gas nuclei that undergo cavitation. Both factors simultaneously affect the intensity of cavitation. The above research is of great significance and role in addressing the overall goal of peaking carbon emissions by 2030 and developing a key technical issue for a new heating method, namely the significant impact of mass transfer on reactions.