Investigation of submerged structures’ flexibility on sloshing frequency using a boundary element method and finite element analysis

Abstract

In this study, the boundary element method-finite element method (BEM-FEM) model is employed to investigate the sloshing and flexibility terms of elastic submerged structures on the behavior of a coupled domain. The methods are finite element and boundary elements which are utilized for structural dynamic and sloshing modeling, respectively. The applied models are used to assess dynamic parameters of a fluid-structure system. Based on the proposed model, a code is developed which can be applied to an arbitrary two-and three-dimensional tank with an arbitrarily shaped elastic submerged structure. Results are validated based on the existing methods represented in the literature and it is concluded that the absolute relative deviation is lower than 2%. Finally, the interactive influences of submerged components which are more meaningful are investigated.

Experimental estimation of temporal and spatial resolution of coefficient of heat transfer in a channel using inverse heat transfer method

“…For future research employing artificial intelligence methods, in particular, machine learning techniques (e.g. Farzaneh-Gord et al, 2019;Ghalandari, et al, 2019aGhalandari, et al, , 2019bMenad et al, 2019;Mosavi, Shamshirband, Salwana, Chau, & Tah, 2019;Mou, He, Zhao, & Chau, 2017) is encouraged considering higher accuracy and lower computational costs.…”

Numerical Modeling of Sloshing Frequencies in Tanks with Structure Using New Presented DQM-BEM Technique

“…As illustrated in Figure 3, the verification example [17,37] comprise rigid rectangular block-shaped walls located at the middle of the rigid container. Indeed, the submerged structure has a height ( h ) and a 30m width ( W ) with 13m liquid depth ( d ) of 13 m. Here, the computation is performed several times with several block heights (h).…”

“…Indeed, the submerged structure has a height (h) and a 30 m width (W) with 13 m liquid depth (d) of 13 m. Here, the computation is performed several times with several block heights (h). Table 1 lists the comparison between ANSYS, the present model, and what is extracted from the literature [17,37] in different h/d ratios. The study indicates a good agreement between the present model, ANSYS, and the literature for all the test cases.…”

Numerical calculations of the thermal-aerodynamic characteristics in a solar duct with multiple V-baffles

“…The study concerned with the treatment of enhancing the heat transfer by using the roughness structure for the duct walls, where its various effects on the hydrothermal behavior were determined, and the largest heat transfer was obtained for a relative pitch ranging between 1.5 and 3. Using the technique of boundary elements as well as the approach of finite elements, Ghalandari et al (2019) conducted numerical studies to examine various sloshing terms as well as the flexibility terms of elastic-type structures, submerged in a flow filed. According to the obtained data, the change in the dimensions of the elastic structures, such as width, thicknesses as well as height, strongly changes the hydrodynamic behavior of the coupled system.…”