Problem about material numbers

[Bobbie]

Dear community:

I set up my microchannel geometry model according to examples, but the strange thing is that there is still a part of geometry with a material number of 0. However, in examples, the area with a material number of 0 is not displayed in Paraview. So, how can I remove this part? The relevant settings about material numbers are as follows:

OstreamManager clout( std::cout,”prepareGeometry” );
clout << “Prepare Geometry …” << std::endl;

// 将内部区域的材料数由0改为2，并将（1,1）区域的材料数由2改为1
superGeometry.rename(0,2,channel+branch);
superGeometry.rename(2,1,{1,1} );

// 定义流域入口并将入口1的材料数由2改为3
Vector<T,2> extend_in1( 0, lengthy );
Vector<T,2> origin_in1( 0, 0 );
IndicatorCuboid2D<T> inflow1( extend_in1, origin_in1 );
superGeometry.rename( 2,3,1,inflow1 );

// 定义流域入口并将入口2的材料数由2改为4
Vector<T,2> extend_in2( branchx, 0 );
Vector<T,2> origin_in2( extrude, lengthy+branchy );
IndicatorCuboid2D<T> inflow2( extend_in2, origin_in2 );
superGeometry.rename( 2,4,1,inflow2 );

// 定义流域出口并将出口的材料数由2改为5
Vector<T,2> extend_out( 0, lengthy );
Vector<T,2> origin_out( lengthx,0 );
IndicatorCuboid2D<T> outflow( extend_out, origin_out );
superGeometry.rename( 2,5,1,outflow );

// 几何模型自清洁及错误检查
superGeometry.clean();
superGeometry.innerClean();
superGeometry.checkForErrors();
superGeometry.getStatistics().print();
clout << “Prepare Geometry … OK” << std::endl;

Thank you for your help.
Best wishes!

[Adrian]

These are just cells in the overlap layer surrounding each block lattice in all direction, i.e. also the very outer boundary. You can safely ignore them.

[Bobbie]

OK, thank you for your help. Best wishes!

[Author]

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