作业帮ansys 中计算温度时的sf命令命令如下：lsel,s,1,4,1lsel,a,13,16,1nsll,s,1 SF,all,RDSF,0.85,-1,问：SF命令后0.85sgi代表的什么?后面的-1代表什么?
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ansys 中计算温度时的sf命令命令如下：lsel,s,1,4,1lsel,a,13,16,1nsll,s,1 SF,all,RDSF,0.85,-1,问：SF命令后0.85sgi代表的什么?后面的-1代表什么?
ansys 中计算温度时的sf命令
命令如下：
lsel,s,1,4,1
lsel,a,13,16,1
nsll,s,1
SF,all,RDSF,0.85,-1,
问：SF命令后0.85sgi代表的什么?后面的-1代表什么?
ansys 中计算温度时的sf命令命令如下：lsel,s,1,4,1lsel,a,13,16,1nsll,s,1 SF,all,RDSF,0.85,-1,问：SF命令后0.85sgi代表的什么?后面的-1代表什么?
RDSF (surface-to-surface radiation).面到面的辐射
If Lab = RDSF,VALUE is the emissivity value;0.85是辐射率,the following conditions apply:If VALUE is between 0 and 1,apply a single value to the surface.
If Lab = RDSF,VALUE2 is the enclosure number.Radiation will occur between surfaces flagged with the same enclosure numbers.If the enclosure is open,radiation will also occur to ambient.If VALUE2 is negative radiation direction is reversed and will occur inside the element for the flagged radiation surfaces.Negative value of enclosure number is applicable for FLUID141 and FLUID142 elements,to model radiation occurring between surfaces inside the fluid domain.-1代表向单元内部辐射