# Rectangular duct, roughened long base wall # # U1/Us # # X2/B= 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 # X3/B .99 .389 .377 .384 .368 .339 .347 .352 .519 .511 .472 .98 .555 .543 .549 .547 .532 .534 .533 .55 .53 .472 .97 .619 .612 .618 .617 .612 .618 .614 .617 .604 .554 .96 .654 .65 .65 .653 .65 .651 .657 .657 .647 .591 .95 .676 .672 .68 .683 .677 .68 .683 .685 .674 .619 .94 .697 .697 .703 .7 .701 .7 .702 .701 .69 .631 .93 .714 .716 .707 .713 .718 .721 .721 .721 .713 .651 .92 .724 .722 .724 .722 .719 .73 .732 .73 .714 .66 .91 .738 .737 .736 .735 .74 .744 .749 .748 .728 .672 .9 .751 .748 .75 .748 .754 .758 .76 .759 .741 .683 .88 .778 .775 .771 .769 .783 .786 .791 .776 .763 .698 .86 .797 .793 .791 .786 .804 .807 .808 .794 .78 .711 .84 .81 .809 .806 .803 .819 .824 .827 .812 .796 .721 .82 .826 .825 .817 .815 .834 .84 .841 .826 .804 .725 .8 .837 .836 .829 .829 .851 .852 .856 .838 .814 .729 .76 .86 .855 .851 .854 .875 .873 .881 .858 .828 .738 .72 .88 .88 .871 .87 .892 .895 .899 .874 .84 .747 .68 .899 .892 .888 .887 .913 .917 .913 .886 .85 .753 .64 .914 .908 .902 .905 .931 .931 .928 .899 .858 .76 .6 .92 .908 .894 .924 .939 .946 .941 .91 .859 .759 .52 .947 .934 .917 .948 .969 .968 .963 .929 .877 .771 .44 .968 .954 .94 .97 .987 .988 .98 .942 .891 .785 .36 .986 .971 .95 .987 1.001 1 .99 .956 .901 .794 .28 1 .983 .966 .998 1.009 1.007 .997 .96 .912 .803 .2 1.008 .992 .975 1.006 1.012 1.009 .998 .962 .915 .806 .1 1.014 .998 .976 1.007 1.013 .991 .991 .961 .914 .804 0 1.01 .995 .97 .998 1 .968 .979 .954 .91 .801 -.1 .995 .977 .962 .975 .95 .934 .946 .931 .882 .784 -.2 .975 .953 .937 .946 .924 .904 .913 .896 .864 .768 -.28 .955 .938 .915 .923 .899 .876 .882 .872 .842 .754 -.36 .927 .903 .893 .898 .873 .843 .851 .842 .821 .741 -.44 .899 .874 .856 .866 .832 .808 .815 .802 .784 .718 -.52 .856 .836 .826 .824 .804 .771 .778 .762 .754 .695 -.6 .813 .799 .789 .792 .76 .733 .735 .721 .713 .666 -.64 .79 .789 .766 .77 .74 .713 .701 .694 .688 .643 -.68 .762 .762 .744 .749 .715 .688 .68 .666 .668 .626 -.72 .737 .738 .712 .72 .693 .665 .651 .643 .633 .602 -.76 .699 .704 .683 .689 .661 .634 .627 .613 .607 .577 -.8 .665 .663 .65 .655 .632 .6 .594 .574 .57 .544 -.82 .639 .641 .63 .631 .609 .58 .571 .555 .546 .523 -.84 .62 .62 .603 .607 .584 .559 .552 .535 .53 .506 -.86 .585 .592 .579 .588 .562 .535 .53 .51 .501 .482 -.88 .56 .56 .553 .553 .538 .514 .506 .483 .478 .452 -.9 .527 .523 .516 .513 .506 .488 .47 .438 .443 .425 -.91 .506 .5 .502 .489 .486 .474 .452 .422 .424 .407 -.92 .474 .472 .471 .464 .462 .452 .43 .398 .398 .384 -.93 .475 .451 .451 .452 .472 .453 .444 .361 .372 .351 -.94 .423 .406 .405 .405 .435 .425 .403 .323 .332 .323 -.95 .362 .35 .354 .351 .364 .355 .341 .279 .291 .279 -.96 .292 .287 .294 .298 .245 .245 .23 .231 .234 .227 -.97 .228 .221 .225 .234 .142 .136 .131 .179 .189 .183 -.98 .175 .17 .175 .177 .101 .098 .093 .139 .143 .143 -.99 .176 .161 .166 .163 .1 .098 .093 .101 .104 .099 # Us (m/sec) 17.00 17.14 17.18 17.23 17.08 17.12 17.08 17.11 17.18 17.12 # Ub (m/sec) 14.28 14.28 14.28 14.28 14.23 14.23 14.23 14.23 14.29 14.29