Re: Numerical integration over an arbitrary 2D domain
- To: mathgroup at smc.vnet.net
- Subject: [mg127142] Re: Numerical integration over an arbitrary 2D domain
- From: Alexei Boulbitch <Alexei.Boulbitch at iee.lu>
- Date: Mon, 2 Jul 2012 05:27:02 -0400 (EDT)
- Delivered-to: l-mathgroup@mail-archive0.wolfram.com
Hi all, I am a new user of Wolfram Mathematica. I need to integrate (numerically of course) generic functions above complex 2D domains. For example, i would like to find the moments of inertia of an airfoil cross-section. Is it possible? My idea was to import a triangular mesh (list of nodes and element connectivity) of the integration domain. Then integrate my functions using a trapezoidal integration. How could i do this? Thank you very much, Alfonso Hi, Alfonso, Mathematica can solve multiple integrals, and there are function NIntegrate= [ ] doing them numerically with a possibility to use various numeric metho= ds and precisions. Check Menu/Help/NIntegrate. You can, of course, also do a custom program, but I recommend to first try = this function. If you already have done so and faced difficulties, post det= ails of your integrand and domain. Otherwise your question is too general t= o help you. Have fun, Alexei Alexei BOULBITCH, Dr., habil. IEE S.A. ZAE Weiergewan, 11, rue Edmond Reuter, L-5326 Contern, LUXEMBOURG Office phone : +352-2454-2566 Office fax: +352-2454-3566 mobile phone: +49 151 52 40 66 44 e-mail: alexei.boulbitch at iee.lu<mailto:alexei.boulbitch at iee.lu>