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data as boundary condition and not a expression

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Old   January 19, 2008, 10:24
Default data as boundary condition and not a expression
  #1
Rogerio Fernandes Brito
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Posts: n/a
How to put these experimental data as heat flux boundary condition on CFX-pre in a transient simulation of a solid sample within a fluid domain (air -> Pr = 0.70)?

Notes: a) I donīt want to use a Origin program (or Excel), for example, to extract a expression with these data.

b) Iīm using CFX-5.6

My timestep is o.22 [s] and total time is 1.107780e+02 [s].

t [s] q [W m^-2] 0.000000e+00 -5.987137e+01 2.220000e-01 -5.728233e+01 4.440000e-01 -5.685082e+01 6.660000e-01 -5.857685e+01 8.880000e-01 -5.943986e+01 1.110000e+00 -5.943986e+01 1.332000e+00 -6.246041e+01 1.554000e+00 -6.289192e+01 1.776000e+00 -6.548097e+01 1.998000e+00 -6.591247e+01 2.220000e+00 -6.763850e+01 2.442000e+00 -7.238508e+01 2.664000e+00 -7.195358e+01 2.886000e+00 4.954787e+02 3.108000e+00 2.687104e+03 3.330000e+00 4.489078e+03 3.552000e+00 6.102055e+03 3.774000e+00 7.009084e+03 3.996000e+00 6.729465e+03 4.218000e+00 7.354288e+03 4.440000e+00 8.421838e+03 4.662000e+00 9.476874e+03 4.884000e+00 1.042705e+04 5.106000e+00 1.126720e+04 5.328000e+00 1.199946e+04 5.550000e+00 1.264025e+04 5.772000e+00 1.320380e+04 5.994000e+00 1.370176e+04 6.216000e+00 1.413586e+04 6.438000e+00 1.452637e+04 6.660000e+00 1.487503e+04 6.882000e+00 1.518183e+04 7.104000e+00 1.545196e+04 7.326000e+00 1.570525e+04 7.548000e+00 1.593395e+04 7.770000e+00 1.613892e+04 7.992000e+00 1.632878e+04 8.214000e+00 1.650311e+04 8.436000e+00 1.666104e+04 8.658000e+00 1.680646e+04 8.880000e+00 1.694109e+04 9.102000e+00 1.706666e+04 9.324000e+00 1.718273e+04 9.546000e+00 1.728802e+04 9.768000e+00 1.738640e+04 9.990000e+00 1.747918e+04 1.021200e+01 1.756634e+04 1.043400e+01 1.764617e+04 1.065600e+01 1.772039e+04 1.087800e+01 1.779331e+04 1.110000e+01 1.785847e+04 1.132200e+01 1.791931e+04 1.154400e+01 1.797843e+04 1.176600e+01 1.803323e+04 1.198800e+01 1.808156e+04 1.221000e+01 1.813291e+04 1.243200e+01 1.817951e+04 1.265400e+01 1.822482e+04 1.287600e+01 1.826236e+04 1.309800e+01 1.830336e+04 1.332000e+01 1.834305e+04 1.354200e+01 1.837671e+04 1.376400e+01 1.841382e+04 1.398600e+01 1.844187e+04 1.420800e+01 1.847035e+04 1.443000e+01 1.849969e+04 1.465200e+01 1.852946e+04 1.487400e+01 1.855493e+04 1.509600e+01 1.857995e+04 1.531800e+01 1.860455e+04 1.554000e+01 1.862742e+04 1.576200e+01 1.865158e+04 1.598400e+01 1.867402e+04 1.620600e+01 1.869344e+04 1.642800e+01 1.871156e+04 1.665000e+01 1.873098e+04 1.687200e+01 1.874695e+04 1.709400e+01 1.876248e+04 1.731600e+01 1.877801e+04 1.753800e+01 1.879441e+04 1.776000e+01 1.880693e+04 1.798200e+01 1.882073e+04 1.820400e+01 1.883066e+04 1.842600e+01 1.884662e+04 1.864800e+01 1.885957e+04 1.887000e+01 1.887165e+04 1.909200e+01 1.888330e+04 1.931400e+01 1.889366e+04 1.953600e+01 1.890531e+04 1.975800e+01 1.891307e+04 1.998000e+01 1.892473e+04 2.020200e+01 1.892990e+04 2.042400e+01 1.894026e+04 2.064600e+01 1.895191e+04 2.086800e+01 1.895709e+04 2.109000e+01 1.896788e+04 2.131200e+01 1.897694e+04 2.153400e+01 1.898643e+04 2.175600e+01 1.899463e+04 2.197800e+01 1.900369e+04 2.220000e+01 1.901232e+04 2.242200e+01 1.902138e+04 2.264400e+01 1.902656e+04 2.286600e+01 1.903476e+04 2.308800e+01 1.904080e+04 2.331000e+01 1.904900e+04 2.353200e+01 1.905677e+04 2.375400e+01 1.906324e+04 2.397600e+01 1.907144e+04 2.419800e+01 1.907921e+04 2.442000e+01 1.908568e+04 2.464200e+01 1.909690e+04 2.486400e+01 1.910682e+04 2.508600e+01 1.910984e+04 2.530800e+01 1.911675e+04 2.553000e+01 1.912538e+04 2.575200e+01 1.913314e+04 2.597400e+01 1.914048e+04 2.619600e+01 1.914825e+04 2.641800e+01 1.915644e+04 2.664000e+01 1.916594e+04 2.686200e+01 1.917198e+04 2.708400e+01 1.917931e+04 2.730600e+01 1.919054e+04 2.752800e+01 1.919528e+04 2.775000e+01 1.920262e+04 2.797200e+01 1.921082e+04 2.819400e+01 1.921902e+04 2.841600e+01 1.923282e+04 2.863800e+01 1.923584e+04 2.886000e+01 1.924145e+04 2.908200e+01 1.924663e+04 2.930400e+01 1.925612e+04 2.952600e+01 1.926087e+04 2.974800e+01 1.926864e+04 2.997000e+01 1.927468e+04 3.019200e+01 1.928244e+04 3.041400e+01 1.928892e+04 3.063600e+01 1.929410e+04 3.085800e+01 1.930100e+04 3.108000e+01 1.930704e+04 3.130200e+01 1.930920e+04 3.152400e+01 1.931567e+04 3.174600e+01 1.931524e+04 3.196800e+01 1.932387e+04 3.219000e+01 1.932862e+04 3.241200e+01 1.933509e+04 3.263400e+01 1.933768e+04 3.285600e+01 1.933940e+04 3.307800e+01 1.934372e+04 3.330000e+01 1.934760e+04 3.352200e+01 1.935321e+04 3.374400e+01 1.935408e+04 3.396600e+01 1.936184e+04 3.418800e+01 1.936486e+04 3.441000e+01 1.937090e+04 3.463200e+01 1.937694e+04 3.485400e+01 1.937953e+04 3.507600e+01 1.938169e+04 3.529800e+01 1.938860e+04 3.552000e+01 1.938989e+04 3.574200e+01 1.939464e+04 3.596400e+01 1.940284e+04 3.618600e+01 1.940888e+04 3.640800e+01 1.941276e+04 3.663000e+01 1.941621e+04 3.685200e+01 1.941880e+04 3.707400e+01 1.942614e+04 3.729600e+01 1.943132e+04 3.751800e+01 1.943649e+04 3.774000e+01 1.943865e+04 3.796200e+01 1.944340e+04 3.818400e+01 1.945073e+04 3.840600e+01 1.945764e+04 3.862800e+01 1.946195e+04 3.885000e+01 1.946411e+04 3.907200e+01 1.947015e+04 3.929400e+01 1.947403e+04 3.951600e+01 1.948094e+04 3.973800e+01 1.948698e+04 3.996000e+01 1.949302e+04 4.018200e+01 1.950165e+04 4.040400e+01 1.951028e+04 4.062600e+01 1.951589e+04 4.084800e+01 1.952452e+04 4.107000e+01 1.953488e+04 4.129200e+01 1.954523e+04 4.151400e+01 1.955429e+04 4.173600e+01 1.956681e+04 4.195800e+01 1.957414e+04 4.218000e+01 1.957803e+04 4.240200e+01 1.958493e+04 4.262400e+01 1.959572e+04 4.284600e+01 1.960263e+04 4.306800e+01 1.960737e+04 4.329000e+01 1.961687e+04 4.351200e+01 1.961773e+04 4.373400e+01 1.962593e+04 4.395600e+01 1.963283e+04 4.417800e+01 1.963628e+04 4.440000e+01 1.964318e+04 4.462200e+01 1.964923e+04 4.484400e+01 1.965225e+04 4.506600e+01 1.965441e+04 4.528800e+01 1.965915e+04 4.551000e+01 1.966821e+04 4.573200e+01 1.966908e+04 4.595400e+01 1.967382e+04 4.617600e+01 1.967900e+04 4.639800e+01 1.967900e+04 4.662000e+01 1.968116e+04 4.684200e+01 1.967814e+04 4.706400e+01 1.968461e+04 4.728600e+01 1.968634e+04 4.750800e+01 1.968806e+04 4.773000e+01 1.969195e+04 4.795200e+01 1.969583e+04 4.817400e+01 1.969410e+04 4.839600e+01 1.969410e+04 4.861800e+01 1.969238e+04 4.884000e+01 1.968979e+04 4.906200e+01 1.969065e+04 4.928400e+01 1.969324e+04 4.950600e+01 1.969367e+04 4.972800e+01 1.969496e+04 4.995000e+01 1.969799e+04 5.017200e+01 1.969842e+04 5.039400e+01 1.969367e+04 5.061600e+01 1.969367e+04 5.083800e+01 1.969971e+04 5.106000e+01 1.969756e+04 5.128200e+01 1.969496e+04 5.150400e+01 1.969195e+04 5.172600e+01 1.969281e+04 5.194800e+01 1.968893e+04 5.217000e+01 1.968849e+04 5.239200e+01 1.968332e+04 5.261400e+01 1.968677e+04 5.283600e+01 1.968763e+04 5.305800e+01 1.968634e+04 5.328000e+01 1.968547e+04 5.350200e+01 1.968375e+04 5.372400e+01 1.968159e+04 5.394600e+01 1.967771e+04 5.416800e+01 1.967555e+04 5.439000e+01 1.967425e+04 5.461200e+01 1.967253e+04 5.483400e+01 1.967469e+04 5.505600e+01 1.967339e+04 5.527800e+01 1.966951e+04 5.550000e+01 1.966605e+04 5.572200e+01 1.966433e+04 5.594400e+01 1.966045e+04 5.616600e+01 1.966260e+04 5.638800e+01 1.965915e+04 5.661000e+01 1.965311e+04 5.683200e+01 1.965527e+04 5.705400e+01 1.965354e+04 5.727600e+01 1.965311e+04 5.749800e+01 1.965095e+04 5.772000e+01 1.965182e+04 5.794200e+01 1.965138e+04 5.816400e+01 1.964793e+04 5.838600e+01 1.964491e+04 5.860800e+01 1.964491e+04 5.883000e+01 1.964578e+04 5.905200e+01 1.964448e+04 5.927400e+01 1.964275e+04 5.949600e+01 1.963973e+04 5.971800e+01 1.963499e+04 5.994000e+01 1.963585e+04 6.016200e+01 1.963499e+04 6.038400e+01 1.963240e+04 6.060600e+01 1.962894e+04 6.082800e+01 1.962549e+04 6.105000e+01 1.962679e+04 6.127200e+01 1.962506e+04 6.149400e+01 1.962506e+04 6.171600e+01 1.962247e+04 6.193800e+01 1.961859e+04 6.216000e+01 1.961773e+04 6.238200e+01 1.961384e+04 6.260400e+01 1.960910e+04 6.282600e+01 1.960953e+04 6.304800e+01 1.960953e+04 6.327000e+01 1.961082e+04 6.349200e+01 1.939593e+04 6.371400e+01 1.808329e+04 6.393600e+01 1.648067e+04 6.415800e+01 1.494105e+04 6.438000e+01 1.355117e+04 6.460200e+01 1.230972e+04 6.482400e+01 1.121412e+04 6.504600e+01 1.024841e+04 6.526800e+01 9.393591e+03 6.549000e+01 8.633274e+03 6.571200e+01 7.974796e+03 6.593400e+01 7.371547e+03 6.615600e+01 6.828281e+03 6.637800e+01 6.337226e+03 6.660000e+01 5.897517e+03 6.682200e+01 5.498806e+03 6.704400e+01 5.136339e+03 6.726600e+01 4.805375e+03 6.748800e+01 4.499868e+03 6.771000e+01 4.221112e+03 6.793200e+01 3.974292e+03 6.815400e+01 3.739982e+03 6.837600e+01 3.519914e+03 6.859800e+01 3.321852e+03 6.882000e+01 3.133715e+03 6.904200e+01 2.964995e+03 6.926400e+01 2.801454e+03 6.948600e+01 2.652152e+03 6.970800e+01 2.512776e+03 6.993000e+01 2.378577e+03 7.015200e+01 2.253440e+03 7.037400e+01 2.136501e+03 7.059600e+01 2.028624e+03 7.081800e+01 1.928946e+03 7.104000e+01 1.832720e+03 7.126200e+01 1.743398e+03 7.148400e+01 1.657097e+03 7.170600e+01 1.577699e+03 7.192800e+01 1.499596e+03 7.215000e+01 1.425377e+03 7.237200e+01 1.355473e+03 7.259400e+01 1.289884e+03 7.281600e+01 1.225589e+03 7.303800e+01 1.168198e+03 7.326000e+01 1.109514e+03 7.348200e+01 1.056438e+03 7.370400e+01 1.004657e+03 7.392600e+01 9.558970e+02 7.414800e+01 9.075680e+02 7.437000e+01 8.670066e+02 7.459200e+01 8.273077e+02 7.481400e+01 7.858830e+02 7.503600e+01 7.453212e+02 7.525800e+01 7.095064e+02 7.548000e+01 6.741226e+02 7.570200e+01 6.357186e+02 7.592400e+01 6.046499e+02 7.614600e+01 5.714239e+02 7.636800e+01 5.416497e+02 7.659000e+01 5.136017e+02 7.681200e+01 4.842593e+02 7.703400e+01 4.588006e+02 7.725600e+01 4.294578e+02 7.747800e+01 4.044306e+02 7.770000e+01 3.837180e+02 7.792200e+01 3.595537e+02 7.814400e+01 3.336634e+02 7.836600e+01 3.133824e+02 7.858800e+01 2.931016e+02 7.881000e+01 2.710948e+02 7.903200e+01 2.525400e+02 7.925400e+01 2.374372e+02 7.947600e+01 2.188824e+02 7.969800e+01 2.029166e+02 7.992000e+01 1.878138e+02 8.014200e+01 1.705536e+02 8.036400e+01 1.524302e+02 8.058600e+01 1.360330e+02 8.080800e+01 1.248138e+02 8.103000e+01 1.114371e+02 8.125200e+01 9.547126e+01 8.147400e+01 8.468358e+01 8.169600e+01 7.346440e+01 8.191800e+01 6.353974e+01 8.214000e+01 5.102603e+01 8.236200e+01 3.980684e+01 8.258400e+01 3.074517e+01 8.280600e+01 2.082051e+01 8.302800e+01 9.601328e+00 8.325000e+01 -7.548738e-01 8.347200e+01 -1.067953e+01 8.369400e+01 -1.801516e+01 8.391600e+01 -2.837134e+01 8.413800e+01 -3.786450e+01 8.436000e+01 -4.822067e+01 8.458200e+01 -5.383027e+01 8.480400e+01 -5.900836e+01 8.502600e+01 -6.893303e+01 8.524800e+01 -7.756317e+01 8.547000e+01 -8.446729e+01 8.569200e+01 -9.180291e+01 8.591400e+01 -9.870705e+01 8.613600e+01 -1.051797e+02 8.635800e+01 -1.146728e+02 8.658000e+01 -1.220084e+02 8.680200e+01 -1.315016e+02 8.702400e+01 -1.366797e+02 8.724600e+01 -1.444468e+02 8.746800e+01 -1.504879e+02 8.769000e+01 -1.586866e+02 8.791200e+01 -1.582551e+02 8.813400e+01 -1.647277e+02 8.835600e+01 -1.668852e+02 8.857800e+01 -1.729263e+02 8.880000e+01 -1.776729e+02 8.902200e+01 -1.863030e+02 8.924400e+01 -1.875975e+02 8.946600e+01 -1.914811e+02 8.968800e+01 -1.919126e+02 8.991000e+01 -1.970907e+02 9.013200e+01 -1.979537e+02 9.035400e+01 -2.074469e+02 9.057600e+01 -2.070154e+02 9.079800e+01 -2.065839e+02 9.102000e+01 -2.096044e+02 9.124200e+01 -2.165085e+02 9.146400e+01 -2.186661e+02 9.168600e+01 -2.234127e+02 9.190800e+01 -2.242757e+02 9.213000e+01 -2.311798e+02 9.235200e+01 -2.311798e+02 9.257400e+01 -2.307483e+02 9.279600e+01 -2.324743e+02 9.301800e+01 -2.354949e+02 9.324000e+01 -2.367894e+02 9.346200e+01 -2.428305e+02 9.368400e+01 -2.428305e+02 9.390600e+01 -2.480086e+02 9.412800e+01 -2.484401e+02 9.435000e+01 -2.497346e+02 9.457200e+01 -2.514606e+02 9.479400e+01 -2.540497e+02 9.501600e+01 -2.583647e+02 9.523800e+01 -2.618168e+02 9.546000e+01 -2.639743e+02 9.568200e+01 -2.652689e+02 9.590400e+01 -2.652689e+02 9.612600e+01 -2.682894e+02 9.634800e+01 -2.687209e+02 9.657000e+01 -2.682894e+02 9.679200e+01 -2.730360e+02 9.701400e+01 -2.738990e+02 9.723600e+01 -2.743305e+02 9.745800e+01 -2.726045e+02 9.768000e+01 -2.743305e+02 9.790200e+01 -2.756250e+02 9.812400e+01 -2.786456e+02 9.834600e+01 -2.790771e+02 9.856800e+01 -2.829607e+02 9.879000e+01 -2.808031e+02 9.901200e+01 -2.833922e+02 9.923400e+01 -2.842552e+02 9.945600e+01 -2.902963e+02 9.967800e+01 -2.907278e+02 9.990000e+01 -2.907278e+02 1.001220e+02 -2.924538e+02 1.003440e+02 -2.937483e+02 1.005660e+02 -2.933169e+02 1.007880e+02 -2.937483e+02 1.010100e+02 -2.937483e+02 1.012320e+02 -2.928854e+02 1.014540e+02 -2.937483e+02 1.016760e+02 -2.941798e+02 1.018980e+02 -2.946114e+02 1.021200e+02 -2.954744e+02 1.023420e+02 -2.967689e+02 1.025640e+02 -2.950429e+02 1.027860e+02 -2.967689e+02 1.030080e+02 -2.937483e+02 1.032300e+02 -2.993580e+02 1.034520e+02 -2.980634e+02 1.036740e+02 -3.015155e+02 1.038960e+02 -2.980634e+02 1.041180e+02 -3.002209e+02 1.043400e+02 -3.019470e+02 1.045620e+02 -3.015155e+02 1.047840e+02 -3.023785e+02 1.050060e+02 -3.032415e+02 1.052280e+02 -3.028100e+02 1.054500e+02 -3.036730e+02 1.056720e+02 -3.023785e+02 1.058940e+02 -3.079881e+02 1.061160e+02 -3.088511e+02 1.063380e+02 -3.097141e+02 1.065600e+02 -3.097141e+02 1.067820e+02 -3.084196e+02 1.070040e+02 -3.088511e+02 1.072260e+02 -3.105772e+02 1.074480e+02 -3.105772e+02 1.076700e+02 -3.110087e+02 1.078920e+02 -3.118717e+02 1.081140e+02 -3.105772e+02 1.083360e+02 -3.092826e+02 1.085580e+02 -3.118717e+02 1.087800e+02 -3.183443e+02 1.090020e+02 -3.187758e+02 1.092240e+02 -3.183443e+02 1.094460e+02 -3.183443e+02 1.096680e+02 -3.209333e+02 1.098900e+02 -3.209333e+02 1.101120e+02 -3.209333e+02 1.103340e+02 -3.213648e+02 1.105560e+02 -3.209333e+02 1.107780e+02 -3.209333e+02

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Old   January 20, 2008, 17:49
Default Re: data as boundary condition and not a expressio
  #2
Glenn Horrocks
Guest
 
Posts: n/a
Hi,

This is easy - make a 1D interpolation function. To input the data, the easiest way is to set up the function in CFX-Pre with some dummy data (just two points say), then right click on the object and edit the CEL. You can then copy and paste the entire data set into the CEL. Make sure you match the CEL data format, that is comma separated.

Glenn Horrocks
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Old   January 20, 2008, 18:41
Default Re: data as boundary condition and not a expressio
  #3
Rogerio Fernandes Brito
Guest
 
Posts: n/a
Hello Glenn Horrocks,

sorry, but I canīt understanding very much! Could u give more details?

I studied tutorials from cfx-v5.6, but i have a doubt! Can I set up a time as an input? There, i only see a "coordinate and some other paramater" as an input data!

Iīm studying the files PreUserFunctions.pdf, Tut09ButterflyValve.pdf, and UserFortran.pdf.

Thanks!
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Old   January 20, 2008, 18:48
Default Re: data as boundary condition and not a expressio
  #4
Rogerio Fernandes Brito
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U said: "...to set up the function in CFX-Pre with some dummy data...", but i didnīt understand what you said. (sorry, my english isnīt very good!)
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Old   January 20, 2008, 18:52
Default Re: data as boundary condition and not a expressio
  #5
Rogerio Fernandes Brito
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what kind of function? Where i choose this function? For the heating, the equation is:

Heat flux [W m^-2] = (B*(19319.80036*(t/A)^3.2347)/(153.2668+(t/A)^3.2347)), where:

A = 1.0 [s] B = 1.0 [W m^-2]

I use Origin v7.5 program to extract this formula!
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Old   January 22, 2008, 17:56
Default Re: data as boundary condition and not a expressio
  #6
Glenn Horrocks
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Hi,

I can't remember how you set up 1D interpolation functions in V5.6, but I know it can be done. Yes, interpolation functions can use time as input data.

Another post of yours suggests you could define this function as a mathematical expression rather than using an interpolation function. This is always a better way of doing it if a mathematical function describes the function.

Glenn Horrocks
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Old   January 22, 2008, 20:34
Default Re: data as boundary condition and not a expressio
  #7
Rogerio Fernandes Brito
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Hi Glenn Horrocks,

I calculated two mathematical functions, one for heating e another for the cooling-off period. For the heating period (from 0 [s] up to 63.27 [s]), the mathematical function presented a little or nothing differences. The cooling-off period goes from 63.27 [s] up to 100.78 [s] !

Thanks again for your attention!
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Old   February 8, 2008, 20:26
Default Re: data as boundary condition and not a expressio
  #8
Rogerio Fernandes Brito
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It works out. I created an 1D interpolation. Itīs really so easy! Thank you very much, Mr. Horrocks!
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