基础知识:潜在流虽有其局限性(无边界层特效、电流流),但潜在流求解器给出的解决方案速度非常快,并可用于某些配置快速近似流水例子中,在潜在流解解后,压力传递到固态机械求解器(线性FSI),结构振荡可分析//www.cannycloudtech.com/icfd/basics-examples/potentialflow//www.cannycloudtech.com/@@site-logo/LS-DYNA-Examples-Logo480x80.png
基础知识:潜在流
虽有其局限性(无边界层特效、电流流),但潜在流求解器给出的解决方案速度非常快,并可用于某些配置快速近似流水例子中,在潜在流解解后,压力传递到固态机械求解器(线性FSI),结构振荡可分析
流压边缘
*KEYWORD *TITLE *DATABASE_BINARY_D3PLOT *DEFINE_CURVE_TITLE *ICFD_BOUNDARY_FSI *ICFD_BOUNDARY_NONSLIP *ICFD_DATABASE_DRAG *ICFD_CONTROL_GENERAL *ICFD_CONTROL_FSI *ICFD_MAT *ICFD_PART *ICFD_PART_VOL *ICFD_SECTION *INCLUDE *MESH_SURFACE_ELEMENT *MESH_SURFACE_NODE *MESH_VOLUME *PARAMETER *END
18luck快乐彩Uniteds-LSSC-LSST-E-Mail-info@de-web:http://www.dyamore.de$ $X------------------------------------------------------------------------------ $X $X 1.运行文件原封不动X需要LSDYNAMPR10.1(或更高)双精度$X---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------$X------------------------------------------------------------------------------ $X *KEYWORD *TITLE ICFD Linear FSI with potential Flow $---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8 $ $ $ PARAMETERS $ $ $ $---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8 *PARAMETER R T_end 10.0 R dt_plot 0.1 $ $--- Fluid $ R v_inlet 50.Rrho_fluid 1.2 R mu_fluid 1.8-5 R dt_fluid 0.000 $ $ $---Struc $ Rrho_struc 7200.0 R E_struc 20000.0 R nu_struc 0.4 R stiff_y 7000.0 Rstiff_rot 4000.0 R dt_ascii 0.005 *INCLUDE struc.k $*END *INCLUDE mesh.k $---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8 $ $ $ ICFD CONTROL CARDS $ $ $ $---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8 *ICFD_CONTROL_GENERAL 1 2 *ICFD_CONTROL_FSI 0 *ICFD_BOUNDARY_FSI 4 $---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8 $ $ $ ICFD PARTS/ SECTION/ MATERIAL $ $ $ $---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8 *ICFD_SECTION $# sid 1 *ICFD_MAT $# mid flg ro vis 1 1&rho_fluid &mu_fluid *ICFD_PART $# pid secid mid 1 1 1 *ICFD_PART $# pid secid mid 2 1 1 *ICFD_PART $# pid secid mid 3 1 1 *ICFD_PART $# pid secid mid 4 1 1 *ICFD_PART_VOL $# pid secid mid 10 1 1 $# spid1 spid2 spid3 spid4 1 2 3 4 $---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8 $ $ $ ICFD BOUNDARY/INITIAL CONDITIONS $ $ $ $---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8 *ICFD_BOUNDARY_PRESCRIBED_VEL $# pid dof vad lcid 1 1 1 1 *ICFD_BOUNDARY_PRESCRIBED_VEL $# pid dof vad lcid 1 2 1 2 *ICFD_BOUNDARY_PRESCRIBED_PRE $# pid lcid sf death birth 2 2 *ICFD_BOUNDARY_FREESLIP $# pid 3 *ICFD_BOUNDARY_NONSLIP $# pid 4 *DEFINE_CURVE_TITLE Velocity inlet $# lcid sidr sfa sfo offa offo dattyp 1 &v_inlet $# a1 o1 0.0 1.0 10000.0 1.0 *DEFINE_CURVE_TITLE Pressure outlet $# lcid sidr sfa sfo offa offo dattyp 2 $# a1 o1 0.0 0.0 10000.0 0.0 $---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8 $ $ $ ICFD MESH KEYWORDS $ $ $ $---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8 *MESH_VOLUME $# volid 1 $# pid1 pid2 pid3 pid4 1 2 3 4 $*MESH_BL $$# pid nelth $ 4 2 $---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8 $ $ $ DATABASE (OUTPUT) $ $ $ $---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8 *ICFD_DATABASE_DRAG $# pid 4 1 *DATABASE_BINARY_D3PLOT &dt_plot *END
虽有其局限性(无边界层特效、电流流),但潜在流求解器给出的解决方案速度非常快,并可用于某些配置快速近似流水例子中,在潜在流解解后,压力传递到固态机械求解器(线性FSI),结构振荡可分析片段集拖动也是输出并可用于后续固态分析