Hello all, I have come across what may be an error in genbox. It concerns reading in data. If instead of 8 elements, 7 are used or if the trailing zeros are removed, all is fine. It almost seems as if genbox has a limitation on the length of the lines defining the element edges. Cheers, Frank Reading 32 = 8 4 4 elements for box 1. Reading 2 = error: 8 9 error: 0 5 The following is the input file: openboat2D.rea -2 spatial dimension 2 number of fields #======================================================== # # Open boat with the Marangoni effect at the top surface. # #======================================================== # Box 8 4 -4.000000 -3.946236 -3.806717 -3.497438 -3.000000 -2.500000 -2.000000 -1.500000 -1.000000 -5.000000 -3.347128 0.000000 3.754690 5.000000 W ,W ,W ,shl, V bc's ! NB: 3 characters each ! t ,t , , , T bc's ! You must have 2 spaces!! -- Frank Herbert Muldoon, Ph.D. Mechanical Engineering Technische Universität Wien (Technical University of Vienna) Inst. f. Strömungsmechanik und Wärmeübertragung (Institute of Fluid Mechanics and Heat Transfer) Resselgasse 3 1040 Wien Tel: +4315880132232 Fax: +4315880132299 Cell:+436765203470 fmuldoo (skype) http://tetra.fluid.tuwien.ac.at/fmuldoo/public_html/webpage/frank-muldoon.ht...