Sources of the Measurement Error of the Impact Pressure in Sloshing Experiments

Abstract

Sloshing experiments have increasingly received academic attention. Understanding the measurement errors in the sloshing impact pressures is an important parts of the sloshing experiments since these errors, which arise from experimental conditions, affect the subsequent results. As part of the research on the sources of the measurement errors, focused on the effects of surface conditions of pressure sensors on the measurement of impact pressures. Thirty-six integrated circuit piezoelectric pressure sensors were placed on the upper surfaces of a two-dimensional tank to measure the sloshing impact pressures under surge or pitch motions. For each motion, the experimental conditions were divided in two based on whether the surfaces of the sensors were dry or wet. The peak pressures of each test were measured as twenty repeated experiments to ensure reliability. The flow in the tank was visualized using a high-speed camera to observe and analyze macroscopic and microscopic phenomena along the sensor surface. Thermal shock effects were confirmed by varying the experimental temperature and that of the sensor surface. The effects of the wet surface and droplets formed on the sensor surface on pressure measurements are discussed.

Roll Motion of a Water Filled Floating Cylinder—Additional Experimental Verification

“…For example, Jiang et al [21] studies the free surface inside a rectangular tank introduced by a big jet. More common is the usage of an oscillation machine [22] or 6-DoF sloshing platforms [23]. Those experimental investigations are used as a validation experiment for numerical simulation and, in particular, the meshless Smoothed Particle Hydrodynamics (SPH) method which has the potential to combine big motions of floating structures with sloshing [24][25][26][27][28][29].…”

Numerical Investigation of Sloshing in Rectangular Tank with Permeable Baffle

“…Therefore, lots of research has been devoted to investigate sloshing [3][4][5][6] and to search for effective ways to suppress violent sloshing. Kim et al [7] investigated the measurement errors of sloshing basing on a six-degree of freedom motion simulation platform. Trimulyono et al [8] performed a parametric analysis of smooth particle hydrodynamics (SPH) parameters in a numerical model of sloshing basing on a graphics processing unit (GPU) acceleration technique.…”