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Using method taught in Step 6, calculate the Strouhal Number for time steps size of 0.2 and 0.1. Following table summarized summarizes the result.
Time Step Size (s) | 0.1 | 0.2 | 0.4 |
Strouhal Number | 0.188 | 0.182 | 0.172 |
Difference (%) | 3 | 6 | 0 |
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Do note that with time step size of 0.1s, we have exceeded the experimental Strouhal value of 0.183. However, we have only investigated the time parameter. We will have to investigate other parameters such as grid convergence, residual, unsteady formulation, etc, before we can conclude on the accuracy of our model. |
Grid Convergence Investigation
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