# calculation of angle_xy_noz and angle_xz_noz

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October 23, 2017, 08:36
calculation of angle_xy_noz and angle_xz_noz
#1
Member

Krishna
Join Date: Apr 2012
Posts: 50
Rep Power: 7
Hi,

I have initial and tail x, y z coordinates of 6 nozzle holes.

I have calculated angle_xy_noz and angle_xz_noz based on theory manual.

I can able to get angle_xz_noz correctly but angle_xy_noz are wrong.

can anyone suggest me how to calculate beam directions using initial and final beam positions (xi,yi,zi and xe,ye,ze for each nozzle hole).

Please find attached sample image of beam angle calculations.

Krishna
Attached Images
 angle_XY_noz.PNG (29.7 KB, 12 views)

November 3, 2017, 03:11
#2
Member

Krishna
Join Date: Apr 2012
Posts: 50
Rep Power: 7
We have a option to input nozzle coordinates and spray orientation unit vector for each direction (x,y,z). for this we need to use--> noz_init_flag=1
we can calculate pray orientation unit vector using initial and final x,y,z values of spray beam. Please refer attached image
Attached Images
 Rect_3D_unitVector.jpg (10.0 KB, 5 views)

 November 7, 2017, 17:59 #3 Member     Tristan Burton Join Date: Sep 2017 Posts: 77 Rep Power: 2 Krishna, Were you able to successfully define your nozzles using nozzle_init_flag=1? Best regards, Tristan __________________ Tristan Burton Senior Principal Engineer CONVERGECFD

 December 6, 2017, 10:55 #4 Member   Krishna Join Date: Apr 2012 Posts: 50 Rep Power: 7 No Tristan. But in one plane it is coming same but i am not getting how actually want. can you please suggest me the best way with initial and end coordinates of spray beam. Thank you in advance. Krishna

 December 6, 2017, 14:56 #5 Member     Tristan Burton Join Date: Sep 2017 Posts: 77 Rep Power: 2 Krishna, If you're having trouble with the coordinate system transformation, why don't you just enter the location and direction information for each hole individually in Cartesian coordinates by setting nozzle_init_flag=1? You can easily measure the Cartesian coordinate direction vectors in Studio if you place temporary vertices at the initial and final beam locations. Best regards, Tristan __________________ Tristan Burton Senior Principal Engineer CONVERGECFD

 December 6, 2017, 23:22 #6 Member   Krishna Join Date: Apr 2012 Posts: 50 Rep Power: 7 Hi Tristan, I am trying to calculate normals by manual method. this is good idea to calculate direction normal using with studio.. i will do it and inform you. Thank you so much. Krishna

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