[nv4dll]

I had resend the email via gmail , please check for it.

[nv4dll]

Dear Sam,

Thanks for your help and time! It helped me a lot.

Best wishes,

nv4dll

[nv4dll]

If I want to convert the surface tension converted into lattice units which fator shold I use? Since The units of surface tension is N/M.
Should I use 0.133333/0.0144?

Voxel length(m):                  physDeltaX=     0.133333
Time step(s):                     physDeltaT=     0.148148
Velocity factor(m/s):             physVelocity=   0.9
Density factor(kg/m^3):           physDensity=    1
Mass factor(kg):                  physMass=       0.00237037
Viscosity factor(m^2/s):          physViscosity=  0.12
Force factor(N):                  physForce=      0.0144
Pressure factor(N/m^2):           physPressure=   0.81

[nv4dll]

Dear Sam,
Thank you very much! When I set kappa1=kappa2 it do solve the problem!
But I got another question, let’s take contactAngle2d for example. If I use the formula you give me then the kappa1&2 should be 30, but in the code it is 0.005. Why it that? Should I convert it again?

Best wishes,
nv4dll

[nv4dll]

I had send you a email, please check your inbox.
You are welcome:)

[nv4dll]

And I use only 2 lattice in the \microFluidics2d example and deleted all the velocity boundary except inlet1 ( dx, yl1, {0., ny/2.} );

And I used \contactAngle2d to find some h1&h2 for different angles:

h1 = 0.0002948;                  // Contact angle 120 degrees   
h2 = -0.0002948;                  // Contact angle 120 degrees   

h1 = 0.0002048;                  // Contact angle 110 degrees   
h2 = -0.0002048;                  // Contact angle 110 degrees   

h1 = 0.0001448;                  // Contact angle 100 degrees   
h2 = -0.0001448;                  // Contact angle 100 degrees   

[nv4dll]

the velocity filed: https://imgur.com/weEpqk4

[nv4dll]

Dear iJokerify,
I’m using Clion for debug, here is my cmakelist:

cmake_minimum_required(VERSION 3.10)
project(LBM)
SET (CMAKE_USE_RELATIVE_PATHS ON)
#OpenLB库文件
set(LINK_DIR ${PROJECT_SOURCE_DIR}/lib/olb/build/precompiled/lib)
link_directories(${LINK_DIR})
set(CMAKE_CXX_STANDARD 14)
#OpenLB库文件
include_directories(${PROJECT_SOURCE_DIR}/lib/olb/src)
include_directories(${PROJECT_SOURCE_DIR}/lib/olb/src/external/zlib)
include_directories(${PROJECT_SOURCE_DIR}/lib/olb/src/external/tinyxml)

include_directories(SYSTEM ${MPI_INCLUDE_PATH})
set(CMAKE_CXX_COMPILE_FLAGS ${CMAKE_CXX_COMPILE_FLAGS} 
#your source code PATH
add_executable(LBM ${PROJECT_SOURCE_DIR}/src/main3d.cpp )

target_link_libraries(LBM olb)
target_link_libraries(LBM z)

you should precompiled opeblb first and put everthing in opeblb libary under the /lib/olb/ (make new dir named lib&olb)

or you can just give me your email I can send you files

[nv4dll]

Dear Mathias,
I’m very appreciate for your help. Sorry for the late reply ,I definit want to attend the school I was plan for it ,but I’m in China right now. I will see if there will be any chance depending on whether the epidemic situation has improved.

[Author]

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