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In the current article, we will use a CFD approach for the scrubber wash water dilution simulation, by considering the current MEPC (Marine Environment Protection Committee, a subsidiary of IMO—International Maritime Organization) regulations that are in force. The necessity for scrubber wash water pH modelling and its importance in the current env...
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... a better comparison and understanding of the simulation results, we used the peak volume fraction results for the area of interest (4 m radius probe sphere). The values obtained in the presented cases are shown in Table 3. The achieved differences are small, established in a range of max 3% variation, related to the initial mesh setting, which leads to the conclusion that the solution is stable and can also be considered acceptable. ...Similar publications
Heart disease, which is on the rise, particularly in developing countries like Indonesia, is the leading cause of mortality worldwide. Pandemic COVID-19 should cause concern for those who currently have cardiovascular disease as it may exacerbate their condition. This study aims at investigating how dietary and lifestyle factors influence the preva...
Citations
... The checks require predetermined test conditions, such as the highest engine load, maximum sulfur fuel oil, and different washwater flows. 141 Moreover, the alkalinity of the reference water for the test should be 2200 μmol/L or pH 8.2. 140 The disruptive effect of scrubber discharge on water alkalinity in harbors is now proven. ...
The article provides a analysis of pulsating water jets, utilizing three distinct head models. It research the impact of tool geometry on water velocity and pressure scientifically. The emergence of vortices due to increased flow through additional holes is identified as the primary cause of the observed pulsations. Laboratory tests contributed measured impulses at various pressures, revealing a direct correlation between longer impulses (ranging from 15 mm to 60 mm) and increased erosion potential. Notably, at 35 MPa, longer impulses exhibited a minor decrease in force deviation by 0.068.
Additionally, the research indicates that pressure variations affect impulse frequencies: 0.55 ms at 15 MPa and approximately 1 ms at higher pressures, highlighting the dynamic nature of water streams based on applied pressures.
The study emphasizes the exploitable aspects of self-excited pulsating heads, meticulously examining their design, parameter variations, and their impact on impulse generation. Such comprehensive research serves as a fundamental for enhancing the efficiency of surface pulsating water jet.
