请教一个求解斯特劳哈尔数（Strouhal number）的Open FOAM操作
-
-
-
https://ww2.mathworks.cn/help/matlab/ref/fft.html?requestedDomain=cn
这个你试试 我这没有matlab
我这个数据好像更容易提取
# Probe 0 (0.122 0.1 0.025) # Probe 0 # Time 0 0 0.5 0.000135843 1 0.000135702 1.5 -4.57744e-05 2 0.000123003 2.5 -2.79535e-05 3 0.00328874 3.5 0.000947001 4 0.000529907 4.5 0.000163593 5 5.03227e-05 5.5 8.54823e-05 6 0.000142415 6.5 0.000202754 7 0.000259332 7.5 0.000322295 8 0.000411347 8.5 0.000550698 9 0.000756106 9.5 0.0010256 10 0.00133246 10.5 0.00162223 11 0.00181988 11.5 0.00183703 12 0.00159657 12.5 0.00105721 13 0.000239534 13.5 -0.000755836 14 -0.0017403 14.5 -0.00245631 15 -0.00261804 15.5 -0.00198289 16 -0.000446355 16.5 0.0018778 17 0.00459975 17.5 0.0070047 18 0.00824328 18.5 0.00740803 19 0.00376827 19.5 -0.00310711 20 -0.0126158 20.5 -0.0233056 21 -0.033109 21.5 -0.0386603 22 -0.0377052 22.5 -0.028208 23 -0.0096092 23.5 0.0147556 24 0.0419193 24.5 0.0612856 25 0.0670999 25.5 0.0623559 26 0.0413666 26.5 -0.00193976 27 -0.0593574 27.5 -0.0923834 28 -0.123561 28.5 -0.148991 29 -0.118123 29.5 -0.0734106 30 -0.0222373 30.5 0.052546 31 0.129214 31.5 0.141769 32 0.23253 32.5 0.25828 33 0.221619 33.5 0.159757 34 0.105595 34.5 0.0654843 35 0.0356566 35.5 0.0132362 36 -0.00678391 36.5 -0.0300766 37 -0.0612481 37.5 -0.112846 38 -0.174946 38.5 -0.197402 39 -0.223917 39.5 -0.263897 40 -0.239721 40.5 -0.174663 41 -0.106599 41.5 -0.0531459 42 -0.0109459 42.5 0.0243137 43 0.0582165 43.5 0.100885 44 0.164319 44.5 0.20261 45 0.195353 45.5 0.252451 46 0.267618 46.5 0.227103 47 0.158297 47.5 0.0945265 48 0.0460365 48.5 0.00746259 49 -0.0244331 49.5 -0.0556687 50 -0.0948289 50.5 -0.156554 51 -0.199132 51.5 -0.195023 52 -0.248193 52.5 -0.267217 53 -0.229549 53.5 -0.161125 54 -0.0963399 54.5 -0.0468471 55 -0.00739381 55.5 0.0254448 56 0.0575924 56.5 0.098328 57 0.160981 57.5 0.201221 58 0.195093 58.5 0.251178 59 0.267264 59.5 0.227284 60 0.158497 60.5 0.0944746 61 0.0457636 61.5 0.0069333 62 -0.0253253 62.5 -0.0570372 63 -0.0972021 63.5 -0.159635 64 -0.200607 64.5 -0.19497 65 -0.250529 65.5 -0.267231 66 -0.22771 66.5 -0.158994 67 -0.0948115 67.5 -0.0459436 68 -0.00697044 68.5 0.0254434 69 0.0572901 69.5 0.0976684 70 0.160195 70.5 0.200853 71 0.195015 71.5 0.250821 72 0.267183 72.5 0.227388 73 0.158617 73.5 0.0945198 74 0.0457297 74.5 0.00682313 75 -0.0255261 75.5 -0.0573435 76 -0.0977332 76.5 -0.160282 77 -0.200903 77.5 -0.19501 78 -0.250982 78.5 -0.267195 79 -0.227279 79.5 -0.158505 80 -0.0944447 80.5 -0.0456958 81 -0.00680875 81.5 0.0255314 82 0.057342 82.5 0.0977186 83 0.160255 83.5 0.200873 84 0.195015 84.5 0.250906 85 0.267133 85.5 0.227221 86 0.158426 86.5 0.0943566 87 0.0455892 87.5 0.00669183 88 -0.0256605 88.5 -0.0575052 89 -0.0979937 89.5 -0.160594 90 -0.20104 90.5 -0.195034 91 -0.251217 91.5 -0.267147 92 -0.227 92.5 -0.158183 93 -0.0941945 93.5 -0.045506 94 -0.00665888 94.5 0.0256549 95 0.0574692 95.5 0.0979066 96 0.160479 96.5 0.200968 97 0.195029 97.5 0.251087 98 0.267084 98.5 0.226983 99 0.158153 99.5 0.094138 100 0.0454197如下图
