13551

1187 دكتري

دكتري

سازه

اصفهان: دانشگاه صنعتي اصفهان، دانشكده عمران

۱۳۹۶

۷، [۸۷]ص.: مصور، جدول، نمودار

بيژن برومند

مجتبي ازهري، فرشيد مسيبي

محمد مهدي سعادت پور، مهدي زندي، امير مهدي حلبيان

1397/03/07

كتابنامه

عمران

مهندسي عمران

ID1187 دكتري

Simulating Fluid and Structure Interaction Using Exponential Basis Functions Hanieh Pary Abarghooei abarghooei@cv iut ac ir March 14 2018 Department of Civil Engineering Isfahan University of Technology 84156 83111 Isfahan IranBijan Boromand Boromand@cc iut ac irMojtaba Azhari mojtaba@cc iut ac irFarshid Mossaiby Mossaiby@eng ui ac irMohammad Navid Moghim moghim@cc iut ac ir Professor Department of Civil enguneering Isfahan Univ of Technology 84156 83111 Isfahan Iran Professor Department of Civil enguneering Isfahan Univ of Technology 84156 83111 Isfahan Iran Associate Professor Department of Civil enguneering Isfahan Univercity 81746 73441 Isfahan Iran Department Graduate Program Coordinator Assistant Professor Department of Civil enguneering IsfahanUniv of Technology 84156 83111 Isfahan Iran ABSTRACTIn this research a meshless method using exponential basis functions is developed for fluid structure interaction in liquid tanks undergoing non linear sloshing The formulation in thefluid part is based on the use of Navier Stokes equations presented in Lagrangian descriptionas Laplacian of the pressure for inviscid incompressible fluids The use of exponential basisfunctions satisfying the Laplace equation leads to a strong form of volume preservation whichhas a direct effect on the accuracy of the pressure field In a boundary node style the bases areused to incrementally solve the fluid part in space and time The elastic structure is discretizedby the finite elements and analyzed by the Newmark method The direct use of the pressure asthe potential of the acceleration helps to find the loads acting on the structure in a straight forward manner The results show that the use of the proposed meshless analysis not only leadsto accurate hydrodynamic pressure but also reduces the computational time to one eighth ofthe time needed for the finite elements analysis Keywords Fluid structure interaction Meshless method Exponential basis functions Lagrangian description for fluids Nonlinear sloshing INTRODUCTIONFluid structure interaction is of particular importance in various applications in engineeringmechanics and especially in the designing process of industrial systems Examples of suchsystems are offshore structures dams fluid tanks bridges ships and spacecrafts Predictingthe hybrid fluid structure system response is a complex process and in many practical casesfinding an analytical solution is not possible On the other hand in this field laboratoryinvestigations are of limited ranges Therefore many researchers have attempted to developnumerical methods to study the dynamic behavior and fluid structure interaction 87

بيژن برومند

مجتبي ازهري، فرشيد مسيبي

محمد مهدي سعادت پور، مهدي زندي، امير مهدي حلبيان