{"id":47249,"date":"2020-08-11T08:55:31","date_gmt":"2020-08-11T08:55:31","guid":{"rendered":"\/forum\/forums\/topic\/different-result-for-moment-from-monitoring-plot-and-result-report-forces\/"},"modified":"2020-08-11T08:55:31","modified_gmt":"2020-08-11T08:55:31","slug":"different-result-for-moment-from-monitoring-plot-and-result-report-forces","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/different-result-for-moment-from-monitoring-plot-and-result-report-forces\/","title":{"rendered":"Different result for moment from monitoring plot and result-report-forces"},"content":{"rendered":"
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Dear all,<\/p>\n

I am performing a 2D simulation of a savonius wind turbine using the MRF method. The material is air with default properties. A velocity inlet with 7 m\/s speed, a pressure outlet with 0 pa, symmetry for top and bottom border, a moving wall (relative to adjacent) for the rotor walls. I am using coupled solver with k-omega SST turbulence model.<\/p>\n

Convergence criteria is 10^-4 for residual and 10^-4 for rotor torque value. The simulation was run in steady state with no problem and convergence reach around 500-900 iteration. During the simulation run, i put a monitoring plot for the moment along Z axis, with moment center at 0,0. The center is exactly at the rotor center as i made it in spaceclaim.<\/p>\n

The value of the torque from the monitoring was stable at around 0.2417 N.m. however, when i print the result>report>forces>moment with the same moment center and axis and wall, the result is significantly different (0.0556 N.m).<\/p>\n

The question is, whether the torque from monitoring and result>report computed differently, eventhough on the same axis and center? Or is there any other factor which leads to this difference in value?<\/p>\n

SOme attachement related to the case. Thank you for your kind assistance.<\/p>\n

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