[shanheplus]

I defined the R134a_liquid material as following.
I referred the FLUENT database "propdb.scm"'s format.
However, it does work?
I don't know why.
Wish for answering me.
Thanks.

 
(r134a_liquid
  fluid
  (chemical-formula . r134a<l>)
  (density (polynomial piecewise-linear (268 . 1311.6) (268.1 . 1311.3) (268.2 . 1311) (268.3 . 1310.6) (268.4 . 1310.3) (268.5 . 1310) (268.6 . 1309.7) (268.7 . 1309.3) (268.8 . 1309) (268.9 . 1308.7) (269 . 1308.4) (269.1 . 1308) (269.2 . 1307.7) (269.3 . 1307.4) (269.4 . 1307.1) (269.5 . 1306.7) (269.6 . 1306.4) (269.7 . 1306.1) (269.8 . 1305.8) (269.9 . 1305.4) (270 . 1305.1) (270.1 . 1304.8) (270.2 . 1304.5) (270.3 . 1304.1) (270.4 . 1303.8) (270.5 . 1303.5) (270.6 . 1303.2) (270.7 . 1302.8) (270.8 . 1302.5) (270.9 . 1302.2) (271 . 1301.8) (271.1 . 1301.5) (271.2 . 1301.2) (271.3 . 1300.9) (271.4 . 1300.5) (271.5 . 1300.2) (271.6 . 1299.9) (271.7 . 1299.6) (271.8 . 1299.2) (271.9 . 1298.9) (272 . 1298.6) (272.1 . 1298.2) (272.2 . 1297.9) (272.3 . 1297.6) (272.4 . 1297.3) (272.5 . 1296.9) (272.6 . 1296.6) (272.7 . 1296.3) (272.8 . 1295.9) (272.9 . 1295.6) (273 . 1295.3) (273.1 . 1294.9) (273.2 . 1294.6) (273.3 . 1294.3) (273.4 . 1294) (273.5 . 1293.6) (273.6 . 1293.3) (273.7 . 1293) (273.8 . 1292.6) (273.9 . 1292.3) (274 . 1292) (274.1 . 1291.6) (274.2 . 1291.3) (274.3 . 1291) (274.4 . 1290.6) (274.5 . 1290.3) (274.6 . 1290) (274.7 . 1289.6) (274.8 . 1289.3) (274.9 . 1289) (275 . 1288.6) (275.1 . 1288.3) (275.2 . 1288) (275.3 . 1287.6) (275.4 . 1287.3) (275.5 . 1287) (275.6 . 1286.6) (275.7 . 1286.3) (275.8 . 1286) (275.9 . 1285.6) (276 . 1285.3) (276.1 . 1285) (276.2 . 1284.6) (276.3 . 1284.3) (276.4 . 1284) (276.5 . 1283.6) (276.6 . 1283.3) (276.7 . 1283) (276.8 . 1282.6) (276.9 . 1282.3) (277 . 1281.9) (277.1 . 1281.6) (277.2 . 1281.3) (277.3 . 1280.9) (277.4 . 1280.6) (277.5 . 1280.3) (277.6 . 1279.9) (277.7 . 1279.6) (277.8 . 1279.3) (277.9 . 1278.9)))
  (specific-heat (polynomial piecewise-linear (268 . 1327.5) (268.3 . 1328.3) (268.6 . 1329) (268.9 . 1329.8) (269.2 . 1330.6) (269.5 . 1331.3) (269.8 . 1332.1) (270.1 . 1332.9) (270.4 . 1333.7) (270.7 . 1334.5) (271 . 1335.3) (271.3 . 1336.1) (271.6 . 1336.9) (271.9 . 1337.7) (272.2 . 1338.5) (272.5 . 1339.3) (272.8 . 1340.1) (273.1 . 1340.9) (273.4 . 1341.7) (273.7 . 1342.5) (274 . 1343.4) (274.3 . 1344.2) (274.6 . 1345) (274.9 . 1345.9) (275.2 . 1346.7) (275.5 . 1347.5) (275.8 . 1348.4) (276.1 . 1349.2) (276.4 . 1350.1) (276.7 . 1351) (277 . 1351.8) (277.3 . 1352.7) (277.6 . 1353.6) (277.9 . 1354.4)))
  (thermal-conductivity (polynomial piecewise-linear (268 . 0.094308) (268.3 . 0.094174) (268.6 . 0.09404) (268.9 . 0.093905) (269.2 . 0.093771) (269.5 . 0.093637) (269.8 . 0.093503) (270.1 . 0.09337) (270.4 . 0.093236) (270.7 . 0.093102) (271 . 0.092969) (271.3 . 0.092835) (271.6 . 0.092702) (271.9 . 0.092568) (272.2 . 0.092435) (272.5 . 0.092302) (272.8 . 0.092169) (273.1 . 0.092036) (273.4 . 0.091903) (273.7 . 0.09177) (274 . 0.091637) (274.3 . 0.091504) (274.6 . 0.091371) (274.9 . 0.091239) (275.2 . 0.091106) (275.5 . 0.090974) (275.8 . 0.090841) (276.1 . 0.090709) (276.4 . 0.090577) (276.7 . 0.090444) (277 . 0.090312) (277.3 . 0.09018) (277.6 . 0.090048) (277.9 . 0.089916)))
  (viscosity (polynomial piecewise-linear (268 . 0.000268) (268.3 . 0.0002683) (268.6 . 0.0002686) (268.9 . 0.0002689) (269.2 . 0.0002692) (269.5 . 0.0002695) (269.8 . 0.0002698) (270.1 . 0.0002701) (270.4 . 0.0002704) (270.7 . 0.0002707) (271 . 0.000271) (271.3 . 0.0002713) (271.6 . 0.0002716) (271.9 . 0.0002719) (272.2 . 0.0002722) (272.5 . 0.0002725) (272.8 . 0.0002728) (273.1 . 0.0002731) (273.4 . 0.0002734) (273.7 . 0.0002737) (274 . 0.000274) (274.3 . 0.0002743) (274.6 . 0.0002746) (274.9 . 0.0002749) (275.2 . 0.0002752) (275.5 . 0.0002755) (275.8 . 0.0002758) (276.1 . 0.0002761) (276.4 . 0.0002764) (276.7 . 0.0002767) (277 . 0.000277) (277.3 . 0.0002773) (277.6 . 0.0002776) (277.9 . 0.0002779)))
  (molecular-weight (constant . 102.03))
  (reference-temperature (constant . 273.8221)))

[vinerm]

For user-defined materials, you do not need to write a scheme file manually. You can directly create a new material within Fluent using GUI. If you really want to save it in .scm, say, for sharing with others or for use in other cases, write it from Fluent's Materials Panel. Click on user-defined database and give it a new name. Then select materials from the case to save it in the database. You can write it manually but you have to follow rather strict format.

[khebab]

I have the same issue
I think because Refrigerants have a variable properties !

Hope you answer !
what was your solution for this case !!