Simulated and Experimental Study of Seabed Sediments Sampling Parameters Based on the VOF Method

Abstract Sediments in the seabed hold vital clues to study of marine geology, microbial communities and history ocean life, remote operated vehicle (ROV) mounted tubular sampling is an important way obtain sediments. However, a particularly difficult complicated task due difficulty accessing deep water layers. The affected by sampler’s structural parameters, operation parameters interaction between tube sediments, which usually results low volume coring rate sediments obtained. This paper simulated soft viscous as non-Newtonian Herschel-Bulkley viscoplastic fluids established numerical model for based on fluid (VOF) method. influence rules diameter, drainage area rate, penetration velocity, dynamic viscosity were studied. showed that was negatively correlated with all except diameter. Furthermore, decreased increases viscosity. first increased then increasing peak value also influenced velocity. Then, simulation results, experimental platform set up real-world experiments conducted. tallied maximum absolute error only 4.6%, verified accurately reflected sampling. findings this can provide theoretical basis facilitating optimal design geometric structure samplers process.