Determination of Drag and Lift Forces Around a Circular Cylinder by Using a Modied Immersed Finite-Element Method

Recently, an immersed finite-element method (IFEM) was proposed to resolve diverse multi-physics problems, such as fluid and electrical field simulations. The original IFEM has the advantages of delineating the whole system and of considering fluid-structure interaction effects just through the use of a fluid solver. In this paper, we introduce a modified IFEM with an enhanced algorithm for accuracy, which is applicable for analyses of rigid solid bodies under fluid flows. Especially, to verify the efficiency of the proposed method, we simulated the well-known flow past a circular cylinder. The encompassed circular cylinder is tied up by employing virtual forcing terms, for whose drag and lift forces are calculated and compared with corresponding reference solutions. Recently, an immersed finite-element method (IFEM) was proposed to resolve diverse multi-physics problems, such as fluid and electrical field simulations. The original IFEM has the advantages of delineating the whole system and of considering fluid-structure interaction effects just through the use of a fluid solver. In this paper, we introduce a modified IFEM with an enhanced algorithm for accuracy, which is applicable for analyses of rigid solid bodies under fluid flows. Especially, to verify the efficiency of the proposed method, we simulated the well-known flow past a circular cylinder. The encompassed circular cylinder is tied up by employing virtual forcing terms, for whose drag and lift forces are calculated and compared with corresponding reference solutions. KCI Citation Count: 1