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September 10, 2020, 10:13 
Calculate Force over beam

#1 
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Join Date: Jan 2020
Posts: 31
Rep Power: 5 
Hi, I am trying to calculate the force on the beam! the formula is like this:
L is the length of the beam. and I am using this code(part of the code) in DEFINE_EXECUTE_AT_END macro: Domain *d= Get_Domain(1); Thread *t=Lookup_Thread(d,ID); face_t f; begin_f_loop(f, t) if (PRINCIPAL_FACE_P(f,t)) { F_CENTROID(x,f,t); yy = x[0]; F_AREA(area,f,t); phi = 1cos((PI/2)*(yy/L)); Fpy+=L*area[1]*F_P(f,t)*phi; } fout = fopen ("Pressure.out","a"); fprintf(fout," %f %f %f %f %f %f %f\n",time,area[1],Fpy,F_P(f,t),phi); fclose(fout); end_f_loop(f, t) Fy = Fpy; #if RP_NODE /* SERIAL or NODE */ Fy=PRF_GRSUM1(Fy); #endif /* RP_NODE */ Is this true?! should I multiply (L) for calculating Force (Fpy+=L*area[1]*F_P(f,t)*phi) THANKS 

September 15, 2020, 06:00 

#2 
Senior Member
Alexander
Join Date: Apr 2013
Posts: 2,347
Rep Power: 33 
unfortunately, I don't see any formula, may be, cause the picture is blocked.
I have no Idea, if you need L (length of the beam) in the formula or not, so I can comment the code only most likely you have problems in writing to file Code:
fout = fopen ("Pressure.out","a"); fprintf(fout," %f %f %f %f %f %f %f\n",time,area[1],Fpy,F_P(f,t),phi); fclose(fout); Read Ansys Fluent Customization manual for detailed information. Look for parallelization chapter if you remove that part, I think, code should work well
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September 16, 2020, 09:24 

#3  
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Join Date: Jan 2020
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Quote:
here is my question: should I multiply (L) for calculating Force or not?!(Fpy+=L*area[1]*F_P(f,t)*phi) and for more details I use the series form when I open fluent not parallel 

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beam, blade, piezoelectric, udf 
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