NOTE: ANY USE OF THIS DATA SHOULD PROPERLY ACKNOWLEDGE THE NASA/LEWIS RESEARCH CENTER. COORDINATES FOR THE NASA LOW SPEED CENRIFUGAL COMPRESSOR AS REPORTED IN ASME PAPER 92-GT-213,"EXPERIMENTAL AND COMPUTATIONAL INVESTIGATION OF THE NASA LOW-SPEED CENTRIFUGAL COMPRESSOR FLOW FIELD" BY HATHAWAY, CHRISS, WOOD, STRAZISAR. SURFACE NUMBER 1 IS THE HUB SURFACE NUMBER 11 IS THE TIP OF THE BLADE - NOT THE CASING (OR SHROUD) Z IS AXIAL DISTANCE IN CENTIMETERS. R IS RADIAL DISTANCE IN CENTIMETERS THETA 1 IS THE TANGENTIAL COORDINATE OF THE LOWER SURFACE IN RADIANS. THETA 2 IS THE TANGENTIAL COORDINATE OF THE UPPER SURFACE IN RADIANS. ROTATION IS SUCH THAT SURFACE 1 IS THE LEADING OR PRESSURE SIDE OF THE BLADE AND SURFACE 2 IS THE TRAILING OR SUCTION SIDE OF THE BLADE. WITH THE BLADE TANGENTIAL COORDINATES DEFINED AS SUCH, THE ROTATION RATE WILL HAVE A NEGATIVE SIGN TO BE ALGEBRAICALLY CONSISTENT. NUMBER OF IMPELLER BLADES = 20 BACKSWEEP FROM RADIAL = 55 DEGREES Tested RPM = -1862 REVOLUTIONS PER MINUTE TESTED MASS FLOW RATE WAS 30 KILOGRAMS/SECOND. TIP CLEARANCE BETWEEN THE IMPELLER TIP AND THE STATIONARY CASING WAS 0.254 CM. A GAP OF APPROXIMATELY 0.250 CENTIMETERS EXISTED BETWEEN THE IMPELLER DISK AT EXIT AND THE STATIONARY DIFFUSER HUB BACK WALL. THIS GAP WAS SEALED WITH A ROPE SEAL TO REDUCE OR ELIMINATE ANY LEAKAGE INTO THE FLOW. ANY QUESTIONS SHOULD BE DIRECTED AS FOLLOWS: TEST PROGRAM AND DATA: DR. MICHAEL HATHAWAY 216-433-6250 GEOMETRY: JERRY WOOD 216-433-5880 MAILING ADDRESS OF BOTH: NASA/LEWIS RESEARCH CENTER MAIL STOP 5-11 21000 BROOKPARK ROAD CLEVELAND, OHIO 44135 THE FOLLOWING WAS USED TO WRITE THE DATA: j1=1 j2=75 ktip=6 do 1392 k=1,ktip write(6,1393)k 1393 format('L'/' SURFACE NUMBER ',i5,' FROM THE HUB.'/4x,'J',6x,'Z', & 11x,'R', & 9x,'THETA 1',5x,'THETA 2') do 1391 j=j1,j2 z1=zg(1,j,k) r1=rg(1,j,k) 1391 write (6,1491)j-j1+1,z1,r1,tg(1,j,k),tg(2,j,k) 1491 format(i5,4f12.7) 1392 continue SURFACE NUMBER 1 FROM THE HUB. J Z R THETA 1 THETA 2 1 0.0000000 21.4701117 -0.0082765 -0.0082765 2 0.0036576 21.4716357 -0.0059905 -0.0107602 3 0.0073152 21.4728549 -0.0051243 -0.0118667 4 0.0109728 21.4743789 -0.0044710 -0.0127175 5 0.0146304 21.4755981 -0.0039456 -0.0134690 6 0.0182880 21.4771221 -0.0035054 -0.0141351 7 0.0219456 21.4783413 -0.0030936 -0.0147445 8 0.0256032 21.4798653 -0.0027387 -0.0153110 9 0.0292608 21.4810845 -0.0024122 -0.0158494 10 0.0329184 21.4826085 -0.0021282 -0.0163732 11 0.0365760 21.4841325 -0.0018585 -0.0168544 12 0.0402336 21.4853517 -0.0015889 -0.0173216 13 0.0435864 21.4868757 -0.0013618 -0.0177743 14 0.0472440 21.4880949 -0.0011490 -0.0182130 15 0.0527304 21.4902285 -0.0008652 -0.0188353 16 0.0606552 21.4932765 -0.0004963 -0.0197260 17 0.0704088 21.4969341 -0.0001134 -0.0207435 18 0.0844296 21.5021157 0.0003260 -0.0221135 19 0.1051560 21.5100405 0.0008360 -0.0239900 20 0.1356360 21.5213181 0.0013455 -0.0265409 21 0.1792224 21.5377773 0.0017831 -0.0298605 22 0.2401824 21.5606373 0.0019933 -0.0340416 23 0.3233928 21.5917269 0.0017928 -0.0392016 24 0.4364736 21.6334845 0.0009581 -0.0455224 25 0.5763768 21.6849957 -0.0006747 -0.0526109 26 0.7269480 21.7398597 -0.0029443 -0.0595724 27 0.8891016 21.7986861 -0.0058027 -0.0664728 28 1.0634472 21.8614749 -0.0092856 -0.0733785 29 1.2508992 21.9291405 -0.0133850 -0.0802685 30 1.4523720 22.0016829 -0.0181481 -0.0871523 31 1.6687800 22.0797117 -0.0236472 -0.0940502 32 1.9013424 22.1641413 -0.0299380 -0.1012143 33 2.1512784 22.2552765 -0.0371015 -0.1087159 34 2.4198072 22.3534221 -0.0452562 -0.1165971 35 2.7084528 22.4594925 -0.0539994 -0.1248270 36 3.0184344 22.5740973 -0.0631498 -0.1334423 37 3.3515807 22.6981509 -0.0726745 -0.1424083 38 3.7091111 22.8319581 -0.0825813 -0.1517328 39 4.0934639 22.9764333 -0.0928338 -0.1614178 40 4.5064679 23.1321861 -0.1034746 -0.1714783 41 4.9499519 23.3004357 -0.1144221 -0.1818693 42 5.4263543 23.4824012 -0.1256717 -0.1925703 43 5.9381135 23.6796068 -0.1372266 -0.2035423 44 6.4873631 23.8938812 -0.1490458 -0.2147285 45 7.0765415 24.1267484 -0.1610491 -0.2260852 46 7.7090015 24.3797324 -0.1732178 -0.2375916 47 8.3871815 24.6555764 -0.1854718 -0.2491872 48 9.1144343 24.9567188 -0.1977552 -0.2608117 49 9.8941127 25.2855980 -0.2100099 -0.2723908 50 10.7292646 25.6461764 -0.2221271 -0.2838331 51 11.6235478 26.0418068 -0.2340617 -0.2950877 52 12.5806198 26.4767564 -0.2457348 -0.3060806 53 13.6038334 26.9562068 -0.2570472 -0.3167155 54 14.6971510 27.4856444 -0.2679427 -0.3269495 55 15.8642302 28.0717748 -0.2783635 -0.3367355 56 17.1087285 28.7219132 -0.2882991 -0.3460502 57 18.4336941 29.4439844 -0.2977298 -0.3549135 58 19.8427845 30.2480467 -0.3067342 -0.3634055 59 21.3384381 31.1450731 -0.3154372 -0.3716702 60 22.9230933 32.1472555 -0.3240637 -0.3799564 61 24.5973596 33.2692243 -0.3329699 -0.3886451 62 26.3612372 34.5274387 -0.3426584 -0.3982821 63 28.2122876 35.9407963 -0.3538960 -0.4096475 64 30.1450243 37.5321570 -0.3676799 -0.4237475 65 32.1493891 39.3286482 -0.3852330 -0.4417543 66 34.2077035 41.3616642 -0.4079631 -0.4649560 67 36.2931451 43.6690001 -0.4374018 -0.4947128 68 38.3630418 46.2942425 -0.4751126 -0.5323668 69 40.3573482 49.2837209 -0.5226233 -0.5791876 70 42.1959018 52.6807168 -0.5811082 -0.6364147 71 43.7872625 56.5160152 -0.6515101 -0.7052260 72 45.0460865 60.7984551 -0.7342257 -0.7861784 73 45.9165953 65.5173686 -0.8284222 -0.8783031 74 46.3911689 70.6544677 -0.9316368 -0.9788228 75 46.5176609 76.1999989 -1.0401440 -1.0838521 SURFACE NUMBER 2 FROM THE HUB. J Z R THETA 1 THETA 2 1 0.0000000 25.8276975 -0.0060975 -0.0060975 2 0.0033538 25.8289167 -0.0044075 -0.0079872 3 0.0070132 25.8298921 -0.0037691 -0.0088255 4 0.0103703 25.8311113 -0.0033079 -0.0094982 5 0.0140299 25.8320866 -0.0029295 -0.0100764 6 0.0173843 25.8333058 -0.0026104 -0.0105954 7 0.0210439 25.8342812 -0.0023263 -0.0110672 8 0.0243972 25.8355004 -0.0020780 -0.0115152 9 0.0277543 25.8364758 -0.0018532 -0.0119398 10 0.0314140 25.8376950 -0.0016640 -0.0123525 11 0.0347675 25.8389142 -0.0014629 -0.0127294 12 0.0384272 25.8398895 -0.0012972 -0.0131066 13 0.0417825 25.8411087 -0.0011435 -0.0134719 14 0.0454421 25.8420841 -0.0010015 -0.0138136 15 0.0503210 25.8437910 -0.0008239 -0.0143081 16 0.0582498 25.8462294 -0.0005872 -0.0150265 17 0.0673981 25.8491554 -0.0003505 -0.0158387 18 0.0808187 25.8533007 -0.0001018 -0.0169448 19 0.1003369 25.8596406 0.0001827 -0.0184615 20 0.1293091 25.8686652 0.0004204 -0.0205292 21 0.1710906 25.8818351 0.0005170 -0.0232631 22 0.2293402 25.9001866 0.0003671 -0.0267300 23 0.3086329 25.9250633 -0.0002054 -0.0310425 24 0.4159827 25.9585405 -0.0014210 -0.0363914 25 0.5489494 25.9998231 -0.0033704 -0.0424520 26 0.6919915 26.0437956 -0.0058741 -0.0484765 27 0.8457070 26.0909990 -0.0088817 -0.0545083 28 1.0110254 26.1414434 -0.0124240 -0.0605805 29 1.1885417 26.1958502 -0.0165429 -0.0667237 30 1.3794930 26.2541711 -0.0212443 -0.0729111 31 1.5847779 26.3170133 -0.0266033 -0.0792633 32 1.8056062 26.3851132 -0.0326690 -0.0859370 33 2.0428983 26.4587783 -0.0395592 -0.0929596 34 2.2978709 26.5381914 -0.0472089 -0.1003464 35 2.5717619 26.6241424 -0.0552688 -0.1080970 36 2.8660844 26.7171928 -0.0636934 -0.1162115 37 3.1823553 26.8181375 -0.0725157 -0.1246987 38 3.5218314 26.9272838 -0.0817314 -0.1335786 39 3.8866356 27.0454268 -0.0913373 -0.1428570 40 4.2782804 27.1731025 -0.1013393 -0.1525389 41 4.6992128 27.3114537 -0.1117502 -0.1626351 42 5.1512500 27.4615576 -0.1225360 -0.1731098 43 5.6365358 27.6248186 -0.1336808 -0.1839339 44 6.1572068 27.8027634 -0.1451766 -0.1950753 45 6.7162963 27.9970480 -0.1569674 -0.2064982 46 7.3160315 28.2088865 -0.1690478 -0.2182080 47 7.9590167 28.4409866 -0.1813569 -0.2301590 48 8.6486862 28.6955302 -0.1938760 -0.2423094 49 9.3878457 28.9749302 -0.2065297 -0.2546029 50 10.1797311 29.2828264 -0.2192806 -0.2669844 51 11.0271325 29.6224956 -0.2320710 -0.2794038 52 11.9341075 29.9980549 -0.2448419 -0.2918074 53 12.9039489 30.4144929 -0.2575287 -0.3041340 54 13.9399899 30.8771184 -0.2700879 -0.3163427 55 15.0452704 31.3923802 -0.2824607 -0.3283857 56 16.2234672 31.9675048 -0.2946512 -0.3402576 57 17.4778276 32.6103940 -0.3066502 -0.3519691 58 18.8108303 33.3308726 -0.3184946 -0.3635692 59 20.2246600 34.1397051 -0.3303021 -0.3751966 60 21.7210736 35.0491217 -0.3422407 -0.3870278 61 23.3005360 36.0736154 -0.3545958 -0.3993758 62 24.9614277 37.2292341 -0.3677926 -0.4127032 63 26.7015972 38.5349744 -0.3824208 -0.4276127 64 28.5142910 40.0126829 -0.3993027 -0.4449520 65 30.3888161 41.6881786 -0.4194762 -0.4656904 66 32.3080426 43.5912584 -0.4440858 -0.4908859 67 34.2456333 45.7559175 -0.4744298 -0.5217041 68 36.1625002 48.2215970 -0.5118943 -0.5593513 69 38.0040408 51.0288075 -0.5578050 -0.6049755 70 39.6989091 54.2147193 -0.6133059 -0.6597619 71 41.1662975 57.8055960 -0.6793422 -0.7248001 72 42.3307072 61.8097713 -0.7564215 -0.8006762 73 43.1409723 66.2190944 -0.8439277 -0.8866318 74 43.5862088 71.0182008 -0.9398065 -0.9803692 75 43.7058987 76.1990946 -1.0408674 -1.0786158 SURFACE NUMBER 3 FROM THE HUB. J Z R THETA 1 THETA 2 1 0.0000000 30.1852833 -0.0046589 -0.0046589 2 0.0033553 30.1861977 -0.0033629 -0.0061363 3 0.0067170 30.1869293 -0.0028865 -0.0068036 4 0.0097676 30.1878437 -0.0025521 -0.0073396 5 0.0131282 30.1885752 -0.0022781 -0.0078046 6 0.0164793 30.1894896 -0.0020349 -0.0082189 7 0.0198397 30.1902211 -0.0018520 -0.0086129 8 0.0231963 30.1911355 -0.0016693 -0.0089764 9 0.0262468 30.1918670 -0.0015171 -0.0093200 10 0.0296075 30.1927814 -0.0013751 -0.0096431 11 0.0329639 30.1936958 -0.0012529 -0.0099662 12 0.0363245 30.1944273 -0.0011412 -0.0102692 13 0.0393758 30.1953417 -0.0010295 -0.0105619 14 0.0427375 30.1960733 -0.0009379 -0.0108445 15 0.0476161 30.1973534 -0.0008259 -0.0112582 16 0.0549465 30.1991822 -0.0006832 -0.0118435 17 0.0637954 30.2013768 -0.0005403 -0.0125193 18 0.0763095 30.2044857 -0.0003975 -0.0134271 19 0.0949254 30.2092432 -0.0002736 -0.0146969 20 0.1223955 30.2160097 -0.0002296 -0.0164395 21 0.1617698 30.2258878 -0.0003362 -0.0187444 22 0.2167090 30.2397308 -0.0007335 -0.0216997 23 0.2914868 30.2583922 -0.0015415 -0.0253936 24 0.3931239 30.2835813 -0.0029902 -0.0300122 25 0.5188722 30.3146354 -0.0051577 -0.0352893 26 0.6537838 30.3477036 -0.0078112 -0.0405723 27 0.7990736 30.3832814 -0.0109489 -0.0459003 28 0.9550560 30.4213662 -0.0145679 -0.0512924 29 1.1229467 30.4625116 -0.0187254 -0.0567634 30 1.3030505 30.5065959 -0.0234359 -0.0623792 31 1.4969005 30.5542361 -0.0287933 -0.0683273 32 1.7053981 30.6059835 -0.0348484 -0.0746043 33 1.9294485 30.6621455 -0.0415885 -0.0812254 34 2.1702974 30.7227931 -0.0487169 -0.0882053 35 2.4288364 30.7885841 -0.0562433 -0.0955570 36 2.7066141 30.8600216 -0.0641489 -0.1032918 37 3.0051522 30.9377888 -0.0724552 -0.1114202 38 3.3256781 31.0221956 -0.0811728 -0.1199526 39 3.6700373 31.1139124 -0.0902899 -0.1288968 40 4.0400460 31.2134372 -0.0998441 -0.1382795 41 4.4372324 31.3217555 -0.1098120 -0.1480953 42 4.8640313 31.4398579 -0.1202151 -0.1583449 43 5.3222491 31.5690398 -0.1310345 -0.1690079 44 5.8137676 31.7105025 -0.1422461 -0.1800502 45 6.3413367 31.8659480 -0.1538713 -0.1914817 46 6.9077092 32.0364302 -0.1658543 -0.2032845 47 7.5146732 32.2245325 -0.1781880 -0.2154476 48 8.1659333 32.4321826 -0.1908530 -0.2279404 49 8.8636707 32.6617630 -0.2038111 -0.2407236 50 9.6111356 32.9165428 -0.2170228 -0.2537710 51 10.4114611 33.1999255 -0.2304707 -0.2670444 52 11.2677535 33.5156526 -0.2441027 -0.2805163 53 12.1832924 33.8685094 -0.2578772 -0.2941298 54 13.1612061 34.2636927 -0.2717803 -0.3078760 55 14.2045670 34.7075450 -0.2857553 -0.3217098 56 15.3165909 35.2071249 -0.2998165 -0.3356456 57 16.4999784 35.7700854 -0.3139626 -0.3496850 58 17.7569881 36.4062868 -0.3282501 -0.3638899 59 19.0894901 37.1262955 -0.3427506 -0.3783466 60 20.4986173 37.9424382 -0.3576018 -0.3932202 61 21.9838732 38.8687457 -0.3730463 -0.4087588 62 23.5437280 39.9216849 -0.3894198 -0.4253315 63 25.1742264 41.1193660 -0.4071881 -0.4434239 64 26.8681501 42.4830132 -0.4270037 -0.4636996 65 28.6146896 44.0375338 -0.4497116 -0.4869495 66 30.3962989 45.8104995 -0.4762399 -0.5140378 67 32.1882435 47.8330964 -0.5076716 -0.5459608 68 33.9538026 50.1395967 -0.5451876 -0.5837623 69 35.6439439 52.7647019 -0.5899610 -0.6284910 70 37.1967475 55.7402738 -0.6430524 -0.6812266 71 38.5416953 59.0877600 -0.7053844 -0.7429805 72 39.6131688 62.8152735 -0.7774852 -0.8142938 73 40.3643256 66.9167638 -0.8588852 -0.8945476 74 40.7809999 71.3799908 -0.9478367 -0.9818343 75 40.8941365 76.1987847 -1.0415943 -1.0733789 SURFACE NUMBER 4 FROM THE HUB. J Z R THETA 1 THETA 2 1 0.0000000 34.5428666 -0.0034490 -0.0034490 2 0.0030615 34.5434762 -0.0024553 -0.0046095 3 0.0061125 34.5439639 -0.0021087 -0.0051494 4 0.0091651 34.5445735 -0.0018513 -0.0055744 5 0.0122232 34.5450612 -0.0016643 -0.0059547 6 0.0155814 34.5456708 -0.0014949 -0.0062907 7 0.0186406 34.5461585 -0.0013617 -0.0066094 8 0.0216936 34.5467681 -0.0012455 -0.0069099 9 0.0247462 34.5472558 -0.0011385 -0.0071927 10 0.0278044 34.5478654 -0.0010489 -0.0074666 11 0.0308590 34.5484750 -0.0009686 -0.0077232 12 0.0339169 34.5489626 -0.0008970 -0.0079792 13 0.0369692 34.5495722 -0.0008339 -0.0082264 14 0.0400215 34.5500599 -0.0007801 -0.0084650 15 0.0446049 34.5509159 -0.0007171 -0.0088009 16 0.0513319 34.5521351 -0.0006448 -0.0092954 17 0.0595841 34.5535981 -0.0005809 -0.0098605 18 0.0714954 34.5556708 -0.0005251 -0.0106282 19 0.0889117 34.5588407 -0.0005216 -0.0117048 20 0.1145789 34.5633543 -0.0006140 -0.0131865 21 0.1515476 34.5699405 -0.0008809 -0.0151522 22 0.2031741 34.5792725 -0.0014460 -0.0176973 23 0.2734434 34.5917159 -0.0024570 -0.0209085 24 0.3684669 34.6086145 -0.0041070 -0.0249422 25 0.4863955 34.6294273 -0.0064561 -0.0295766 26 0.6131855 34.6515888 -0.0092671 -0.0342404 27 0.7494610 34.6755283 -0.0125276 -0.0389473 28 0.8958179 34.7012433 -0.0162792 -0.0437200 29 1.0531891 34.7291071 -0.0205452 -0.0487139 30 1.2224705 34.7589444 -0.0253997 -0.0540173 31 1.4042954 34.7913574 -0.0309311 -0.0596398 32 1.5995579 34.8267142 -0.0369199 -0.0655951 33 1.8097845 34.8653400 -0.0432738 -0.0718976 34 2.0352969 34.9071636 -0.0499998 -0.0785620 35 2.2779258 34.9527439 -0.0570946 -0.0855924 36 2.5385793 35.0025127 -0.0645803 -0.0930102 37 2.8187868 35.0570363 -0.0724686 -0.1008266 38 3.1194865 35.1166145 -0.0807696 -0.1090613 39 3.4425145 35.1818011 -0.0895022 -0.1177238 40 3.7896932 35.2530405 -0.0986687 -0.1268411 41 4.1622357 35.3311861 -0.1082917 -0.1364187 42 4.5626309 35.4171092 -0.1183683 -0.1464617 43 4.9926262 35.5120087 -0.1288953 -0.1569554 44 5.4541732 35.6167862 -0.1398864 -0.1678987 45 5.9493068 35.7331563 -0.1513350 -0.1792895 46 6.4808792 35.8619572 -0.1632250 -0.1911303 47 7.0512393 36.0057872 -0.1755548 -0.2034247 48 7.6626305 36.1661222 -0.1883017 -0.2161415 49 8.3180574 36.3454818 -0.2014800 -0.2292837 50 9.0203163 36.5467133 -0.2150521 -0.2428294 51 9.7721045 36.7731949 -0.2290094 -0.2567579 52 10.5768784 37.0285157 -0.2433302 -0.2710543 53 11.4376374 37.3172146 -0.2579837 -0.2856919 54 12.3568880 37.6442930 -0.2729741 -0.3006716 55 13.3379104 38.0160194 -0.2882891 -0.3159759 56 14.3832867 38.4392266 -0.3039338 -0.3316221 57 15.4957247 38.9214811 -0.3199220 -0.3476179 58 16.6768882 39.4725748 -0.3362982 -0.3640242 59 17.9284109 40.1029062 -0.3531489 -0.3809263 60 19.2507974 40.8249063 -0.3705941 -0.3984582 61 20.6431192 41.6524027 -0.3888058 -0.4168097 62 22.1026474 42.6016922 -0.4080585 -0.4362625 63 23.6252590 43.6908695 -0.4287123 -0.4572090 64 25.2027110 44.9403717 -0.4512999 -0.4801658 65 26.8233165 46.3737648 -0.4764292 -0.5057292 66 28.4697801 48.0169289 -0.5048693 -0.5346148 67 30.1177981 49.8972579 -0.5375011 -0.5676491 68 31.7341448 52.0448989 -0.5753172 -0.6057336 69 33.2753152 54.4889352 -0.6193347 -0.6498170 70 34.6880556 57.2550637 -0.6705154 -0.7008627 71 35.9126912 60.3608766 -0.7297243 -0.7597701 72 36.8929076 63.8133842 -0.7974549 -0.8270066 73 37.5863530 67.6091246 -0.8732976 -0.9020320 74 37.9754912 71.7394541 -0.9557109 -0.9831944 75 38.0823769 76.1987746 -1.0423249 -1.0681411 SURFACE NUMBER 5 FROM THE HUB. 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