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#1 |
Member
Tony
Join Date: Jun 2010
Posts: 54
Rep Power: 16 ![]() |
Hi,
I wanted to know if it is possible to multiply a tensor and a vector to obtain another vector as result. I tried using the multiplication sign but it is not possible. Thanks! |
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#2 |
Senior Member
Alberto Passalacqua
Join Date: Mar 2009
Location: Ames, Iowa, United States
Posts: 1,912
Rep Power: 36 ![]() ![]() |
Take a look at the programming guide.
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Alberto Passalacqua GeekoCFD - A free distribution based on openSUSE 64 bit with CFD tools, including OpenFOAM. Available as in both physical and virtual formats (current status: http://albertopassalacqua.com/?p=1541) OpenQBMM - An open-source implementation of quadrature-based moment methods. To obtain more accurate answers, please specify the version of OpenFOAM you are using. ![]() |
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#3 |
Member
Tony
Join Date: Jun 2010
Posts: 54
Rep Power: 16 ![]() |
Hey,
I did and tried the inner product but it won't give the right result. I just did manual matrix multiplication. Thanks, Tony |
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#4 | |
Senior Member
Alberto Passalacqua
Join Date: Mar 2009
Location: Ames, Iowa, United States
Posts: 1,912
Rep Power: 36 ![]() ![]() |
Quote:
Best,
__________________
Alberto Passalacqua GeekoCFD - A free distribution based on openSUSE 64 bit with CFD tools, including OpenFOAM. Available as in both physical and virtual formats (current status: http://albertopassalacqua.com/?p=1541) OpenQBMM - An open-source implementation of quadrature-based moment methods. To obtain more accurate answers, please specify the version of OpenFOAM you are using. ![]() |
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#5 |
Member
Tony
Join Date: Jun 2010
Posts: 54
Rep Power: 16 ![]() |
Hey,
Here is the code. The commented parts is the manual multiplication (which works) and the last line is what I tried. It compiles and runs but it doesnt give the right result. When it compiles it gives a warning "warning: suggest parentheses around + or - in operand of &" Code:
bladePointDummie=bladePoints[c][n][k]; //bladePoints[c][n][k][0]=RM.xx()*(bladePointDummie[0]-nacHubGrd[c][1][0])+RM.xy()*(bladePointDummie[1]-nacHubGrd[c][1][1])+RM.xz()*(bladePointDummie[2]-nacHubGrd[c][1][2])+nacHubGrd[c][1][0]; //bladePoints[c][n][k][1]=RM.yx()*(bladePointDummie[0]-nacHubGrd[c][1][0])+RM.yy()*(bladePointDummie[1]-nacHubGrd[c][1][1])+RM.yz()*(bladePointDummie[2]-nacHubGrd[c][1][2])+nacHubGrd[c][1][1]; //bladePoints[c][n][k][2]=RM.zx()*(bladePointDummie[0]-nacHubGrd[c][1][0])+RM.zy()*(bladePointDummie[1]-nacHubGrd[c][1][1])+RM.zz()*(bladePointDummie[2]-nacHubGrd[c][1][2])+nacHubGrd[c][1][2]; bladePoints[c][n][k]=RM&(bladePointDummie-nacHubGrd[c][1])+nacHubGrd[c][1]; |
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Tags |
multiply, tensor, vector |
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