Boundary Element Method Output Files Conversion

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SUMMARY

The discussion centers on converting Boundary Element Method (BEM) output files, specifically focusing on the velocity potential values expressed in scientific notation. The user seeks clarification on interpreting the format, particularly the notation like +1.58625295E-06, which represents +1.58625295 x 10^-6. To calculate sound pressure using the equation p=(rho)*(velocity potential), understanding this format is crucial. The conversation highlights the importance of using appropriate software capable of reading scientific data formats, such as Fortran and C.

PREREQUISITES
  • Understanding of Boundary Element Method (BEM)
  • Familiarity with scientific notation and its applications
  • Basic knowledge of sound pressure calculations
  • Experience with programming languages like Fortran and C
NEXT STEPS
  • Research how to implement BEM in software tools
  • Learn about scientific notation in programming languages
  • Explore sound pressure calculation techniques in acoustics
  • Investigate data file formats for scientific computing
USEFUL FOR

Researchers and engineers working with acoustic modeling, particularly those utilizing the Boundary Element Method for sound pressure calculations and needing to interpret scientific data formats.

altgenn
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Hi there,

I have completed my analysis in BEM. The results gives me velocity potential in form of

37954305E-04 +1.58625295E-06 +2.10275811E-07 +...

I have real scattering values, imaginary and absolute scattering values in this form.

I am new to the method and from a different major, so my question may look silly.
In order to calculate the sound pressure, I have p=(rho)*(velocity potential) equation. (rho) is the density of the medium.

I do not know the format 0.0000E+00. What is it equal to? How may I convert it to calculate the equation?

Thanks.

A.
 
Last edited:
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This is the standard format for data where you want a fixed number of significant figures, but the numbers have a wide range.

+1.58625295E-06 means +1.58625295 x 10^-6

Software that is mean to read "scientific" data files will read and write this format automatically. Check out E, F, and G formats in Fortran, %e, %f and %g formats in C, and similar things in other languages.
 
Thank you very much.
 

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