关于cmatrix电容提取结果的疑问
本帖最后由 garnettwch 于 2012-12-27 16:31 编辑我在做一个线圈的分布电容提取，如图里所示，线圈是层叠排布的。
低下实线为大地。
提取出来的结果是：
________________ CMATRIX SOLUTION SUMMARY ___________________
*** Ground Capacitance Matrix ***
Self Capacitance of conductor1. = 0.38010E-10
Self Capacitance of conductor2. = 0.60321E-10
Self Capacitance of conductor3. = 0.60320E-10
Self Capacitance of conductor4. = 0.38029E-10
Mutual Capacitance between conductors1. and2. = -0.29001E-10
Mutual Capacitance between conductors1. and3. = -0.32393E-11
Mutual Capacitance between conductors1. and4. = -0.35667E-11
Mutual Capacitance between conductors2. and3. = -0.27104E-10
Mutual Capacitance between conductors2. and4. = -0.32361E-11
Mutual Capacitance between conductors3. and4. = -0.28992E-10
Ground capacitance matrix is stored in 3d array parameter cmatrix ( 4., 4.,1)
*** Lumped Capacitance Matrix ***
Self Capacitance of conductor1. = 0.22034E-11
Self Capacitance of conductor2. = 0.97975E-12
Self Capacitance of conductor3. = 0.98366E-12
Self Capacitance of conductor4. = 0.22334E-11
Mutual Capacitance between conductors1. and2. = 0.29001E-10
Mutual Capacitance between conductors1. and3. = 0.32393E-11
Mutual Capacitance between conductors1. and4. = 0.35667E-11
Mutual Capacitance between conductors2. and3. = 0.27104E-10
Mutual Capacitance between conductors2. and4. = 0.32361E-11
Mutual Capacitance between conductors3. and4. = 0.28992E-10
Lumped capacitance matrix is stored in 3d array parameter cmatrix ( 4., 4.,2)
Capacitance values are per unit length
Capacitance matricies are stored in file cmatrix .txt
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我比较疑惑的是，为什么分布在上下边缘的两个导体对地电容一样呢？
如图中所示，对地电容应该是越往上越小才对啊。
按照ansys help里面的解释，集总电容里面Cl11应该是与Cl12没有关系的才对啊。
为什么2、3号线圈会对1号线圈的地电容造成影响呢？
我做了个试验，如果只有两根导线的时候，导线1比导线2的对地电容小，结果容易理解。
但是变成三个了之后就会出现这种“两头冒尖”的现象。
哪位大侠能够帮我解释一下啊？我现在十分的困惑。
为什么木有人啊？
难道都回家过元旦了吗？ 放假回来了还是没有人帮忙啊！
有没有哪位能帮忙解释一下啊，实在是着急加困惑！ 为什么米有人来帮我啊？:'(
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