Partitioned and Monolithic Algorithms for the Numerical Solution of Cardiac Fluid-Structure Interaction  

作　　者：Michele Bucelli Luca Dede Alfio Quarteroni Christian Vergara 

机构地区：[1]MOX,Dipartimento di Matematica,Politecnico di Milano,P.zza Leonardo da Vinci 32,20133Milan,Italy [2]Mathematics Institute,EPFL,Av.Piccard,CH-1015 Lausanne,Switzerland(Professor Emeritus) [3]LABS,Dipartimento di Chimica,Materiali e Ingegneria Chimica“Giulio Natta”,Politecnico di Milano,P.zza Leonardo da Vinci 32,20133Milan,Italy

出　　处：《Communications in Computational Physics》2022年第10期1217-1256,共40页计算物理通讯（英文）

基　　金：funding from the European Research Council(ERC)under the European Union’s Horizon 2020 research and innovation programme(grant agreement No 740132,iHEART-An Integrated Heart Model for the simulation of the cardiac function,P.I.Prof.A.Quarteroni).

摘　　要：We reviewand compare different fluid-structure interaction(FSI)numerical methods in the context of heart modeling,aiming at assessing their computational efficiency for cardiac numerical simulations and selecting the most appropriate method for heart FSI.Blood dynamics within the human heart is characterized by active muscular action,during both contraction and relaxation phases of the heartbeat.The efficient solution of the FSI problem in this context is challenging,due to the added-mass effect(caused by the comparable densities of fluid and solid,typical of biomechanics)and to the complexity,nonlinearity and anisotropy of cardiac consitutive laws.In this work,we review existing numerical coupling schemes for FSI in the two classes of strongly-coupled partitioned and monolithic schemes.The schemes are compared on numerical tests that mimic the flow regime characterizing the heartbeat in a human ventricle,during both systole and diastole.Active mechanics is treated in both the active stress and active strain frameworks.Computational costs suggest the use of a monolithic method.We employ it to simulate a full heartbeat of a human ventricle,showing how it allows to efficiently obtain physiologically meaningful results.

关 键 词：Heartmodeling activemechanics fluid structure interaction monolithic algorithms partitioned algorithms 

分 类 号：O17[理学—数学]