2D Mesh Issue

[hoover.a...@gmail.com]

Hi all,

I'm encountering an error that came from a recent install of IBAMR and seems to only affect 2D meshes:

P=00001:Program abort called in file ``/apps/project/pbs0334/ibamr/0.17-openmpi/tmp/unpack/IBAMR-0.17.0/src/IB/IBFEMethod.cpp'' at line 375
P=00001:ERROR MESSAGE:
P=00001:Failed assertion: mesh->mesh_dimension() == mesh->spatial_dimension()

I've run the code with 3D meshes and it seems to work correctly. Looking over my input file and main.C (which worked correctly in a previous install), I can't find the issue. My CMakeLists.txt is adjusted for 2D simulations:

PROJECT(mysolver)
CMAKE_MINIMUM_REQUIRED(VERSION 3.15.0)

# List your source files here - this example has just one.
SET(SOURCE_FILES main.C)
ADD_EXECUTABLE(main2d ${SOURCE_FILES})

FIND_PACKAGE(IBAMR 0.17.0 REQUIRED)
TARGET_LINK_LIBRARIES(main2d IBAMR::IBAMR3d)
# IBAMR saves the flags it used to compile - you can reuse them if you want to
SET(CMAKE_CXX_FLAGS ${IBAMR_CXX_FLAGS})

Any hints at what could be causing this?

Best,

Alex

[Chang Wei]

Hi Alex

There is a small issue in your CMakeLists.txt.  The following line TARGET_LINK_LIBRARIES(main2d IBAMR::IBAMR3d) should be changed into  TARGET_LINK_LIBRARIES(main2d IBAMR::IBAMR2d), so that the target links against the correct 2D IBAMR library. 

Best regards,

Chang

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发件人: ibamr...@googlegroups.com <ibamr...@googlegroups.com> 代表 hoover.a...@gmail.com <hoover.a...@gmail.com>
发送时间: 星期四, 一月 29, 2026 12:09 上午
收件人: IBAMR Users <ibamr...@googlegroups.com>
主题: [ibamr-users] 2D Mesh Issue

 

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[Wells, David]

Hi Alex,

That message typically appears when the loaded mesh has nonzero z coordinates: does it have all the z coordinates set to, for example, 1?

Best,

David Wells

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From: ibamr...@googlegroups.com <ibamr...@googlegroups.com> on behalf of Chang Wei <weichx...@gmail.com>
Sent: Wednesday, January 28, 2026 11:46 AM
To: ibamr...@googlegroups.com <ibamr...@googlegroups.com>
Subject: Re: [ibamr-users] 2D Mesh Issue

 

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