Biphasic FSI problems from the FEBio test suite. These files are run through FEBio after each compilation to ensure that it is working as intended.
Owner: FEBio Team
biphasic fsi
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bi01.feb
A BFSI block of 10 elements is compressed in the zdirection by 0.1 units in time t=100, then allowed to relax to time t=1000.
biphasic fsi
bi02.feb
A BFSI block of 10 elements is compressed in the zdirection by 0.1 units in time t=100, then allowed to relax to time t=1000.
biphasic fsi
bi03.feb
A BFSI block of 10 elements is compressed in the zdirection by 0.1 units in time t=100, then allowed to relax to time t=1000.
biphasic fsi
bi04.feb
A BFSI block of 10 elements is compressed in the zdirection by 0.1 units in time t=100, then allowed to relax to time t=1000.
biphasic fsi
bi05.feb
A BFSI block of 10 elements is compressed in the zdirection by 0.1 units in time t=100, then allowed to relax to time t=1000.
biphasic fsi
bi06.feb
A fixed CFD/FSI wedge with 4000 elements where Newtonian fluid enters from a plug normal velocity boundary load that increases linearly to t=1 and run until t=10.
biphasic fsi
bi07.feb
A fixed CFD/FSI wedge with 4000 elements where Newtonian fluid enters from a plug normal velocity boundary load that increases linearly to t=1 and run until t=10. Normal flow constraint at outlet.
biphasic fsi
bi08.feb
BFSI Blood flow through wedge with resistance and pressure offset at outlet, pulsatile inlet. Newtonian fluid with MooneyRivlin solid. With must points.
biphasic fsi
bi09.feb
BFSI Blood flow through wedge with 0 pressure at outlet, pulsatile inlet. Carreau Yasuda fluid with MooneyRivlin solid
Material parameters from Cho YI and Kensey KR (1991). Biorheology, 28:241262.
biphasic fsi
bi10.feb
BFSI Blood flow through wedge with 0 pressure at outlet, pulsatile inlet. Powell Eyring fluid with MooneyRivlin solid
Material parameters from Cho YI and Kensey KR (1991). Biorheology, 28:241262.
biphasic fsi
bi11.feb
Tube where a rotational velocity is prescribed on inner and outer walls. This is a couette flow problem. Run one newton step and then use Broyden for rest. BFSI material.
biphasic fsi
bi12.feb
A 10x10x1 block of BFSI Newtonian fluid material undergoing Couette flow, with up to 1 units of fluid viscous traction in xdirection in 50 seconds
biphasic fsi
bi13.feb
BFSI Pulsatile flow through a bifurcated artery. Fluid normal velocity load prescribed at inlet and resistance with pressure offset prescribed on outlet. Uses a tet mesh and must points
Similar examples seen in results of Ateshian GA, Shim JJ, Maas SA, Weiss JA. (2018) J Biomech Eng, 140(2):02100102100117.
biphasic fsi
bi14.feb
Problem Description: BFSI Taylor slip problem that models Couette flow over a rigid porous layer. Tangential velocity prescribed on top of fluid layer, with no slip wall at bottom of porous domain, where an interface is shared between the two. 0 pressure and displacement throughout. Main Features: BFSI porous solid permeability tangential velocity Secondary Features: Broyden no ref each step no diverge reform Newtonian fluid PostBL Materials: NeoHookean Poroelastic Newtonian Constant Permeability Degrees of Freedom: 5664 Results: Steps Completed: 20 Equilibrium Iterations: 50 Right Hand Evaluations: 80 Siffness Reformations: 1 Other: The xnodal flux for node 220 at time t=2 is 0.834029 Comments: Similar examples seen in results of Shim JJ, Maas SA, Weiss JA, Ateshian GA. (2021) J Biomech Eng, In Press.
biphasic fsi
bi15.feb
BFSI Taylor slip problem that models Couette flow over a rigid porous layer. Tangential velocity prescribed on top of fluid layer, with no slip wall at bottom of porous domain, where an interface is shared between the two. 0 pressure and displacement throughout. Tet4
Similar examples seen in results of Shim JJ, Maas SA, Weiss JA, Ateshian GA. (2021) J Biomech Eng, In Press.
biphasic fsi
bi16.feb
BFSI Taylor slip problem that models Couette flow over a rigid porous layer. Tangential velocity prescribed on top of fluid layer, with no slip wall at bottom of porous domain, where an interface is shared between the two. 0 pressure and displacement throughout. Tet10
Similar examples seen in results of Shim JJ, Maas SA, Weiss JA, Ateshian GA. (2021) J Biomech Eng, In Press.
biphasic fsi
bi17.feb
BFSI Taylor slip problem that models Couette flow over a rigid porous layer. Tangential velocity prescribed on top of fluid layer, with no slip wall at bottom of porous domain, where an interface is shared between the two. 0 pressure and displacement throughout. Hex20
Similar examples seen in results of Shim JJ, Maas SA, Weiss JA, Ateshian GA. (2021) J Biomech Eng, In Press.
biphasic fsi
bi18.feb
BFSI Taylor slip problem that models Couette flow over a rigid porous layer. Tangential velocity prescribed on top of fluid layer, with no slip wall at bottom of porous domain, where an interface is shared between the two. 0 pressure and displacement throughout. Hex20G8
Similar examples seen in results of Shim JJ, Maas SA, Weiss JA, Ateshian GA. (2021) J Biomech Eng, In Press.
biphasic fsi
bi19.feb
Problem Description: BFSI Generalized Taylor slip problem that models Couette and Poiseuille flow over a deformable porous layer. Tangential velocity prescribed on top of fluid layer, with no slip wall at bottom of porous domain, where an interface is shared between the two. Prescribed pressure and displacement allowed in x direction. Main Features: BFSI porous solid permeability tangential velocity prescribed pressure moving boundary Secondary Features: Broyden no ref each step no diverge reform Newtonian fluid PostBL Materials: NeoHookean Poroelastic Newtonian Constant Permeability Degrees of Freedom: 20008 Results: Steps Completed: 400 Equilibrium Iterations: 640 Right Hand Evaluations: 1415 Siffness Reformations: 10 Other: The xdisplacement for node 1718 at time t=8 is 0.105845 Comments: Similar examples seen in results of Shim JJ, Maas SA, Weiss JA, Ateshian GA. (2021) J Biomech Eng, In Press.
biphasic fsi
bi20.feb
Problem Description: BFSI ultrafiltration of viscous fluid through biphasic layer. Step pressure prescribed on rigid top platen interfacing viscous fluid, which interfaces a porous media domain, which interfaces a rigid porous platen with 0 p. Up to t=100s when steady state is reached. Main Features: BFSI porous solid permeability Newtonian Fluid Rigid Body BFSI Traction Secondary Features: Broyden no ref each step no diverge reform PostBL must points Materials: NeoHookean Poroelastic Newtonian Constant Permeability Degrees of Freedom: 3675 Results: Steps Completed: 882 Equilibrium Iterations: 2877 Right Hand Evaluations: 3930 Siffness Reformations: 52 Other: The ydisplacement for node 250 at time t=100 is 0.4.98356e06 Comments: Similar examples seen in results of Shim JJ, Maas SA, Weiss JA, Ateshian GA. (2021) J Biomech Eng, In Press.
biphasic fsi
bi21.feb
Problem Description: BFSI compression of a block with HolmesMow permeability model. Smoothly compress by 99.99% to t=1s. Main Features: BFSI porous solid non linear permeability Secondary Features: Broyden no ref each step no diverge reform Moving boundary Materials: NeoHookean Poroelastic Newtonian Holmes Mow Permeability Degrees of Freedom: 1204 Results: Steps Completed: 111 Equilibrium Iterations: 1060 Right Hand Evaluations: 1609 Siffness Reformations: 36 Other: The zpermeability for element 100 at t=1 is 0.0100048 Comments:
biphasic fsi
bi22.feb
Problem Description: BFSI onedimensional isothermal dilatational wave propagation problem. Transient, but no viscous, friction effects, no intertia. Prescribed fluid dilatational disturbance, creating two solid disturbances. Energy conserved with rhoi=1. Multistep used to prescribe correct boundary conditions. Main Features: BFSI non zero gen alpha Porous solid Secondary Features: Broyden no ref each step no diverge reform Materials: NeoHookean Poroelastic Newtonian Constant Permeability Degrees of Freedom: 40016 Results: Steps Completed: 600 Equilibrium Iterations: 1231 Right Hand Evaluations: 1834 Siffness Reformations: 14 Other: The xvelocity for element 700 at time t=0.002 is 5.49727e07 Comments: Similar examples seen in results of Shim JJ, Maas SA, Weiss JA, Ateshian GA. (2021) J Biomech Eng, In Press.
biphasic fsi
bi23.feb
BFSI 1D flow of fluid through a porous domain driven by gravity. 0 p at both ends
biphasic fsi
bi24.feb
This example uses the mixed biphasic formulation (i.e. mixed_formulation = 1)
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