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Mass flux

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1191: 1635: 2070: 937: 1481: 1913: 1041: 445: 1521: 2154: 268: 1953: 1034: 2223: 659: 1386: 468:- ignoring the area spanned by the holes in the filter/membrane. The spaces would be cross-sectional areas. For liquids passing through a pipe, the area is the cross-section of the pipe, at the section considered. 809: 1820: 1308:
When describing fluid flow (i.e. flow of matter), mass flux is appropriate. When describing particle transport (movement of a large number of particles), it is useful to use an analogous quantity, called the
1246: 176: 1749: 1401: 814: 550: 1833: 1941: 1509: 344: 721:. Suppose the pipe has a constant cross section and we consider a straight section of it (not at any bends/junctions), and the water is flowing steadily at a constant rate, under 593: 510: 2090: 181: 773: 950: 2170: 598: 1186:{\displaystyle j_{m}={\frac {1000\times \left(1.5\times 10^{-3}\right)}{\pi \times \left(2\times 10^{-2}\right)^{2}\times 2}}={\frac {3}{16\pi }}\times 10^{4},} 1323: 1630:{\displaystyle \langle \mathbf {u} \rangle ={\frac {1}{\rho }}\sum _{i}\rho _{i}\mathbf {u} _{i}={\frac {1}{\rho }}\sum _{i}\mathbf {j} _{{\rm {m}},\,i}} 1760: 1305:
of substances (technically contains a number of component substances), the mass fluxes must be considered separately for each component of the mixture.
2065:{\displaystyle \langle \mathbf {u} \rangle ={\frac {1}{n}}\sum _{i}c_{i}\mathbf {u} _{i}={\frac {1}{c}}\sum _{i}\mathbf {j} _{{\rm {n}},\,i}.} 1209: 115: 1709: 2267: 932:{\displaystyle {\begin{aligned}\Delta m&=\rho \Delta V\\m_{2}-m_{1}&=\rho (V_{2}-V_{1})\\m&=\rho V\\\end{aligned}}} 2160: 2311: 2156:
which is a statement of the mass conservation of fluid. In hydrodynamics, mass can only flow from one place to another.
784:(magnitude), we also need the amount of mass of water transferred through the area and the time taken. Suppose a volume 93:
Less commonly the defining equation for mass flux in this article is used interchangeably with the defining equation in
515: 2327: 2262: 453:
required to calculate the flux is real or imaginary, flat or curved, either as a cross-sectional area or a surface.
1269:
of mass elements flowing (i.e. at each point in space the velocity of an element of matter is some velocity vector
1918: 1486: 796: 739: 1476:{\displaystyle \mathbf {j} _{{\rm {m}},\,i}=\rho \left(\mathbf {u} _{i}-\langle \mathbf {u} \rangle \right),} 671:
of the unit vectors. That is, the component of mass flux passing through the surface (i.e. normal to it) is
2345: 2287: 1908:{\displaystyle \mathbf {j} _{{\rm {n}},\,i}=c\left(\mathbf {u} _{i}-\langle \mathbf {u} \rangle \right),} 569: 486: 2350: 440:{\displaystyle m=\int _{t_{1}}^{t_{2}}\iint _{S}\mathbf {j} _{m}\cdot \mathbf {\hat {n}} \,dA\,dt.} 74:
to indicate mass is the flowing quantity. Mass flux can also refer to an alternate form of flux in
2322:
Vectors, Tensors, and the basic Equations of Fluid Mechanics, R. Aris, Dover Publications, 1989,
2230: 301: 2149:{\displaystyle \nabla \cdot \mathbf {j} _{\rm {m}}+{\frac {\partial \rho }{\partial t}}=0,} 8: 2084: 722: 461: 110: 263:{\displaystyle I_{m}=\lim _{\Delta t\to 0}{\frac {\Delta m}{\Delta t}}={\frac {dm}{dt}}} 2242: 2306:
Fluid Mechanics, M. Potter, D.C. Wiggart, Schuam's outlines, McGraw Hill (USA), 2008,
2323: 2307: 475:
is a combination of the magnitude of the area through which the mass passes through,
465: 297: 1029:{\displaystyle j_{m}={\frac {\Delta m}{A\Delta t}}={\frac {\rho V}{\pi r^{2}t}}.} 101:
uses the definition of mass flux as the equation in the mass flow rate article.
2257: 1266: 94: 83: 79: 63: 35: 1706:
The molar flux is the number of moles per unit time per unit area, generally:
684:. While the component of mass flux passing tangential to the area is given by 2339: 2252: 2080: 1693: 75: 2218:{\displaystyle \nabla \cdot \mathbf {j} _{\rm {n}}=-\nabla \cdot D\nabla n} 709:
component of mass flux passing normal to the area is the cosine component.
654:{\displaystyle \mathbf {j} _{m}\cdot \mathbf {\hat {n}} =j_{m}\cos \theta } 457: 325:, gives the total amount of mass flowing through the surface in that time ( 668: 480: 472: 464:, the real surface is the (generally curved) surface area of the filter, 24: 1381:{\displaystyle \mathbf {j} _{{\rm {m}},\,i}=\rho _{i}\mathbf {u} _{i}.} 2164: 729:
is the cross-sectional area of the pipe. Suppose the pipe has radius
39: 1815:{\displaystyle \mathbf {j} _{{\rm {n}},\,i}=c_{i}\mathbf {u} _{i}} 939:(since initial volume passing through the area was zero, final is 1944: 1512: 1302: 87: 20: 16:
Vector quantity describing mass flow rate through a given area
1291: 718: 1680:
The average is taken over the velocities of the components.
2247: 450: 30: 1206:
Using the vector definition, mass flux is also equal to:
566:
passes through the area at an angle θ to the area normal
67: 1241:{\displaystyle \mathbf {j} _{\rm {m}}=\rho \mathbf {u} } 171:{\displaystyle j_{m}=\lim _{A\to 0}{\frac {I_{m}}{A}},} 2173: 2093: 1956: 1921: 1836: 1763: 1744:{\displaystyle \mathbf {j} _{\rm {n}}=c\mathbf {u} .} 1712: 1524: 1489: 1404: 1326: 1212: 1044: 953: 812: 742: 601: 572: 518: 489: 347: 184: 118: 2217: 2148: 2064: 1935: 1907: 1814: 1757:is (number of moles per unit time per unit area): 1743: 1629: 1503: 1475: 1380: 1240: 1185: 1028: 931: 767: 653: 587: 544: 504: 439: 262: 170: 623: 579: 545:{\displaystyle \mathbf {A} =A\mathbf {\hat {n}} } 536: 496: 414: 307:, followed by an integral over the time duration 2337: 1950:of all the components in the mixture, given by: 199: 133: 1518:of all the components in the mixture, given by 1279:Sometimes this equation may be used to define 456:For example, for substances passing through a 1965: 1957: 1936:{\displaystyle \langle \mathbf {u} \rangle } 1930: 1922: 1894: 1886: 1533: 1525: 1504:{\displaystyle \langle \mathbf {u} \rangle } 1498: 1490: 1462: 1454: 109:Mathematically, mass flux is defined as the 1292:Mass and molar fluxes for composite fluids 1193:which is approximately 596.8 kg s m. 705:the area in the tangential direction. The 282:is the area through which the mass flows. 2053: 1854: 1781: 1621: 1422: 1344: 1301:In the case fluid is not pure, i.e. is a 427: 420: 2079:Mass flux appears in some equations in 1316:Using mass, the mass flux of component 1201: 1196: 2338: 2268:Defining equation (physical chemistry) 1644:= mass density of the entire mixture, 588:{\displaystyle \mathbf {\hat {n}} } 505:{\displaystyle \mathbf {\hat {n}} } 42:are kg m s. The common symbols are 13: 2209: 2200: 2188: 2174: 2128: 2120: 2108: 2094: 2045: 1846: 1773: 1721: 1613: 1414: 1336: 1221: 981: 970: 833: 817: 270:is the mass current (flow of mass 228: 220: 203: 14: 2362: 2263:Wave mass flux and wave momentum 2182: 2102: 2038: 2003: 1961: 1926: 1890: 1873: 1839: 1802: 1766: 1734: 1715: 1606: 1571: 1529: 1494: 1458: 1441: 1407: 1365: 1329: 1234: 1215: 1038:Substituting the numbers gives: 620: 604: 576: 533: 520: 493: 411: 395: 1753:So the molar flux of component 1683: 99:Fluid Mechanics, Schaum's et al 2316: 2300: 2280: 1296: 902: 876: 209: 140: 1: 2273: 104: 1655:= mass density of component 768:{\displaystyle A=\pi r^{2}.} 70:), sometimes with subscript 7: 2236: 943:, so corresponding mass is 775:To calculate the mass flux 717:Consider a pipe of flowing 701:mass flux actually passing 10: 2367: 712: 285:For mass flux as a vector 2074: 1692:by the "molar density", 1672:= velocity of component 947:), so the mass flux is 791:passes through in time 86:that includes the mass 2288:"Thesaurus: Mass flux" 2219: 2150: 2066: 1937: 1909: 1824:barycentric molar flux 1816: 1745: 1688:If we replace density 1631: 1505: 1477: 1382: 1242: 1187: 1030: 933: 769: 655: 589: 546: 506: 441: 264: 172: 38:per unit of area. Its 2231:diffusion coefficient 2220: 2159:Molar flux occurs in 2151: 2067: 1938: 1910: 1817: 1746: 1632: 1506: 1478: 1392:barycentric mass flux 1383: 1243: 1188: 1031: 934: 770: 656: 590: 547: 507: 442: 265: 173: 66:lowercase or capital 2171: 2091: 2083:, in particular the 1954: 1919: 1834: 1761: 1710: 1522: 1487: 1402: 1324: 1210: 1202:Alternative equation 1197:Equations for fluids 1042: 951: 810: 795:= 2 s. Assuming the 789:= 1.5 L = 1.5 × 10 m 740: 736:. The area is then 599: 570: 516: 487: 483:normal to the area, 345: 182: 116: 2346:Physical quantities 2085:continuity equation 723:standard conditions 382: 2243:Mass-flux fraction 2215: 2146: 2062: 2035: 1990: 1933: 1905: 1812: 1741: 1627: 1603: 1558: 1501: 1473: 1378: 1238: 1183: 1026: 929: 927: 765: 651: 585: 542: 512:. The relation is 502: 437: 354: 260: 216: 168: 147: 78:that includes the 2312:978-0-07-148781-8 2135: 2026: 2024: 1981: 1979: 1943:this time is the 1594: 1592: 1549: 1547: 1165: 1147: 1021: 988: 734:= 2 cm = 2 × 10 m 626: 582: 555:If the mass flux 539: 499: 417: 258: 235: 198: 163: 132: 36:rate of mass flow 2358: 2330: 2320: 2314: 2304: 2298: 2297: 2295: 2294: 2284: 2228: 2224: 2222: 2221: 2216: 2193: 2192: 2191: 2185: 2161:Fick's first law 2155: 2153: 2152: 2147: 2136: 2134: 2126: 2118: 2113: 2112: 2111: 2105: 2071: 2069: 2068: 2063: 2058: 2057: 2049: 2048: 2041: 2034: 2025: 2017: 2012: 2011: 2006: 2000: 1999: 1989: 1980: 1972: 1964: 1942: 1940: 1939: 1934: 1929: 1914: 1912: 1911: 1906: 1901: 1897: 1893: 1882: 1881: 1876: 1859: 1858: 1850: 1849: 1842: 1821: 1819: 1818: 1813: 1811: 1810: 1805: 1799: 1798: 1786: 1785: 1777: 1776: 1769: 1750: 1748: 1747: 1742: 1737: 1726: 1725: 1724: 1718: 1698: 1691: 1671: 1654: 1643: 1636: 1634: 1633: 1628: 1626: 1625: 1617: 1616: 1609: 1602: 1593: 1585: 1580: 1579: 1574: 1568: 1567: 1557: 1548: 1540: 1532: 1510: 1508: 1507: 1502: 1497: 1482: 1480: 1479: 1474: 1469: 1465: 1461: 1450: 1449: 1444: 1427: 1426: 1418: 1417: 1410: 1387: 1385: 1384: 1379: 1374: 1373: 1368: 1362: 1361: 1349: 1348: 1340: 1339: 1332: 1287: 1274: 1264: 1256: 1247: 1245: 1244: 1239: 1237: 1226: 1225: 1224: 1218: 1192: 1190: 1189: 1184: 1179: 1178: 1166: 1164: 1153: 1148: 1146: 1139: 1138: 1133: 1129: 1128: 1127: 1096: 1095: 1091: 1090: 1089: 1059: 1054: 1053: 1035: 1033: 1032: 1027: 1022: 1020: 1016: 1015: 1002: 994: 989: 987: 976: 968: 963: 962: 946: 942: 938: 936: 935: 930: 928: 901: 900: 888: 887: 865: 864: 852: 851: 805: 797:density of water 790: 783: 774: 772: 771: 766: 761: 760: 735: 696: 683: 666: 660: 658: 657: 652: 641: 640: 628: 627: 619: 613: 612: 607: 594: 592: 591: 586: 584: 583: 575: 565: 551: 549: 548: 543: 541: 540: 532: 523: 511: 509: 508: 503: 501: 500: 492: 446: 444: 443: 438: 419: 418: 410: 404: 403: 398: 392: 391: 381: 380: 379: 369: 368: 367: 340: 324: 315: 298:surface integral 295: 281: 277: 273: 269: 267: 266: 261: 259: 257: 249: 241: 236: 234: 226: 218: 215: 194: 193: 177: 175: 174: 169: 164: 159: 158: 149: 146: 128: 127: 2366: 2365: 2361: 2360: 2359: 2357: 2356: 2355: 2351:Vector calculus 2336: 2335: 2334: 2333: 2321: 2317: 2305: 2301: 2292: 2290: 2286: 2285: 2281: 2276: 2239: 2226: 2187: 2186: 2181: 2180: 2172: 2169: 2168: 2127: 2119: 2117: 2107: 2106: 2101: 2100: 2092: 2089: 2088: 2077: 2044: 2043: 2042: 2037: 2036: 2030: 2016: 2007: 2002: 2001: 1995: 1991: 1985: 1971: 1960: 1955: 1952: 1951: 1925: 1920: 1917: 1916: 1889: 1877: 1872: 1871: 1870: 1866: 1845: 1844: 1843: 1838: 1837: 1835: 1832: 1831: 1806: 1801: 1800: 1794: 1790: 1772: 1771: 1770: 1765: 1764: 1762: 1759: 1758: 1733: 1720: 1719: 1714: 1713: 1711: 1708: 1707: 1696: 1689: 1686: 1670: 1662: 1652: 1647: 1641: 1612: 1611: 1610: 1605: 1604: 1598: 1584: 1575: 1570: 1569: 1563: 1559: 1553: 1539: 1528: 1523: 1520: 1519: 1493: 1488: 1485: 1484: 1457: 1445: 1440: 1439: 1438: 1434: 1413: 1412: 1411: 1406: 1405: 1403: 1400: 1399: 1369: 1364: 1363: 1357: 1353: 1335: 1334: 1333: 1328: 1327: 1325: 1322: 1321: 1299: 1294: 1286: 1280: 1270: 1260: 1257:= mass density, 1254: 1233: 1220: 1219: 1214: 1213: 1211: 1208: 1207: 1204: 1199: 1174: 1170: 1157: 1152: 1134: 1120: 1116: 1109: 1105: 1104: 1097: 1082: 1078: 1071: 1067: 1060: 1058: 1049: 1045: 1043: 1040: 1039: 1011: 1007: 1003: 995: 993: 977: 969: 967: 958: 954: 952: 949: 948: 944: 940: 926: 925: 912: 906: 905: 896: 892: 883: 879: 866: 860: 856: 847: 843: 840: 839: 823: 813: 811: 808: 807: 800: 785: 781: 776: 756: 752: 741: 738: 737: 730: 715: 690: 685: 677: 672: 662: 636: 632: 618: 617: 608: 603: 602: 600: 597: 596: 574: 573: 571: 568: 567: 564: 556: 531: 530: 519: 517: 514: 513: 491: 490: 488: 485: 484: 466:macroscopically 409: 408: 399: 394: 393: 387: 383: 375: 371: 370: 363: 359: 358: 346: 343: 342: 339: 332: 326: 323: 317: 314: 308: 294: 286: 279: 275: 271: 250: 242: 240: 227: 219: 217: 202: 189: 185: 183: 180: 179: 154: 150: 148: 136: 123: 119: 117: 114: 113: 107: 97:. For example, 17: 12: 11: 5: 2364: 2354: 2353: 2348: 2332: 2331: 2315: 2299: 2278: 2277: 2275: 2272: 2271: 2270: 2265: 2260: 2255: 2250: 2245: 2238: 2235: 2214: 2211: 2208: 2205: 2202: 2199: 2196: 2190: 2184: 2179: 2176: 2145: 2142: 2139: 2133: 2130: 2125: 2122: 2116: 2110: 2104: 2099: 2096: 2076: 2073: 2061: 2056: 2052: 2047: 2040: 2033: 2029: 2023: 2020: 2015: 2010: 2005: 1998: 1994: 1988: 1984: 1978: 1975: 1970: 1967: 1963: 1959: 1948:molar velocity 1932: 1928: 1924: 1904: 1900: 1896: 1892: 1888: 1885: 1880: 1875: 1869: 1865: 1862: 1857: 1853: 1848: 1841: 1809: 1804: 1797: 1793: 1789: 1784: 1780: 1775: 1768: 1740: 1736: 1732: 1729: 1723: 1717: 1699:, we have the 1685: 1682: 1678: 1677: 1666: 1660: 1650: 1645: 1624: 1620: 1615: 1608: 1601: 1597: 1591: 1588: 1583: 1578: 1573: 1566: 1562: 1556: 1552: 1546: 1543: 1538: 1535: 1531: 1527: 1500: 1496: 1492: 1472: 1468: 1464: 1460: 1456: 1453: 1448: 1443: 1437: 1433: 1430: 1425: 1421: 1416: 1409: 1377: 1372: 1367: 1360: 1356: 1352: 1347: 1343: 1338: 1331: 1298: 1295: 1293: 1290: 1284: 1277: 1276: 1267:velocity field 1258: 1236: 1232: 1229: 1223: 1217: 1203: 1200: 1198: 1195: 1182: 1177: 1173: 1169: 1163: 1160: 1156: 1151: 1145: 1142: 1137: 1132: 1126: 1123: 1119: 1115: 1112: 1108: 1103: 1100: 1094: 1088: 1085: 1081: 1077: 1074: 1070: 1066: 1063: 1057: 1052: 1048: 1025: 1019: 1014: 1010: 1006: 1001: 998: 992: 986: 983: 980: 975: 972: 966: 961: 957: 924: 921: 918: 915: 913: 911: 908: 907: 904: 899: 895: 891: 886: 882: 878: 875: 872: 869: 867: 863: 859: 855: 850: 846: 842: 841: 838: 835: 832: 829: 826: 824: 822: 819: 816: 815: 779: 764: 759: 755: 751: 748: 745: 714: 711: 688: 675: 650: 647: 644: 639: 635: 631: 625: 622: 616: 611: 606: 581: 578: 560: 538: 535: 529: 526: 522: 498: 495: 436: 433: 430: 426: 423: 416: 413: 407: 402: 397: 390: 386: 378: 374: 366: 362: 357: 353: 350: 337: 330: 321: 312: 290: 274:per unit time 256: 253: 248: 245: 239: 233: 230: 225: 222: 214: 211: 208: 205: 201: 197: 192: 188: 167: 162: 157: 153: 145: 142: 139: 135: 131: 126: 122: 106: 103: 95:mass flow rate 80:molecular mass 15: 9: 6: 4: 3: 2: 2363: 2352: 2349: 2347: 2344: 2343: 2341: 2329: 2328:0-486-66110-5 2325: 2319: 2313: 2309: 2303: 2289: 2283: 2279: 2269: 2266: 2264: 2261: 2259: 2256: 2254: 2251: 2249: 2246: 2244: 2241: 2240: 2234: 2232: 2212: 2206: 2203: 2197: 2194: 2177: 2166: 2162: 2157: 2143: 2140: 2137: 2131: 2123: 2114: 2097: 2086: 2082: 2081:hydrodynamics 2072: 2059: 2054: 2050: 2031: 2027: 2021: 2018: 2013: 2008: 1996: 1992: 1986: 1982: 1976: 1973: 1968: 1949: 1946: 1902: 1898: 1883: 1878: 1867: 1863: 1860: 1855: 1851: 1829: 1826:of component 1825: 1807: 1795: 1791: 1787: 1782: 1778: 1756: 1751: 1738: 1730: 1727: 1704: 1702: 1695: 1694:concentration 1681: 1675: 1669: 1665: 1661: 1658: 1653: 1646: 1640: 1639: 1638: 1622: 1618: 1599: 1595: 1589: 1586: 1581: 1576: 1564: 1560: 1554: 1550: 1544: 1541: 1536: 1517: 1516:mass velocity 1514: 1470: 1466: 1451: 1446: 1435: 1431: 1428: 1423: 1419: 1397: 1394:of component 1393: 1388: 1375: 1370: 1358: 1354: 1350: 1345: 1341: 1319: 1314: 1312: 1306: 1304: 1289: 1288:as a vector. 1283: 1273: 1268: 1263: 1259: 1253: 1252: 1251: 1248: 1230: 1227: 1194: 1180: 1175: 1171: 1167: 1161: 1158: 1154: 1149: 1143: 1140: 1135: 1130: 1124: 1121: 1117: 1113: 1110: 1106: 1101: 1098: 1092: 1086: 1083: 1079: 1075: 1072: 1068: 1064: 1061: 1055: 1050: 1046: 1036: 1023: 1017: 1012: 1008: 1004: 999: 996: 990: 984: 978: 973: 964: 959: 955: 922: 919: 916: 914: 909: 897: 893: 889: 884: 880: 873: 870: 868: 861: 857: 853: 848: 844: 836: 830: 827: 825: 820: 803: 798: 794: 788: 782: 762: 757: 753: 749: 746: 743: 733: 728: 724: 720: 710: 708: 704: 700: 695: 691: 682: 678: 670: 665: 648: 645: 642: 637: 633: 629: 614: 609: 563: 559: 553: 527: 524: 482: 478: 474: 469: 467: 463: 459: 454: 452: 447: 434: 431: 428: 424: 421: 405: 400: 388: 384: 376: 372: 364: 360: 355: 351: 348: 336: 329: 320: 311: 306: 303: 300:of it over a 299: 293: 289: 283: 254: 251: 246: 243: 237: 231: 223: 212: 206: 195: 190: 186: 165: 160: 155: 151: 143: 137: 129: 124: 120: 112: 102: 100: 96: 91: 89: 85: 81: 77: 73: 69: 65: 61: 57: 53: 49: 45: 41: 37: 33: 32: 26: 22: 2318: 2302: 2291:. Retrieved 2282: 2158: 2078: 1947: 1827: 1823: 1754: 1752: 1705: 1700: 1687: 1684:Molar fluxes 1679: 1673: 1667: 1663: 1656: 1648: 1515: 1395: 1391: 1389: 1317: 1315: 1310: 1307: 1300: 1281: 1278: 1271: 1261: 1249: 1205: 1037: 801: 792: 786: 777: 731: 726: 716: 706: 702: 698: 693: 686: 680: 673: 663: 561: 557: 554: 476: 470: 455: 448: 334: 327: 318: 309: 304: 291: 287: 284: 108: 98: 92: 71: 59: 55: 51: 47: 43: 28: 18: 2258:Darcy's law 1703:analogues. 1297:Mass fluxes 806:, we have: 804:= 1000 kg m 725:. The area 697:, there is 669:dot product 481:unit vector 473:vector area 84:Darcy's law 25:engineering 2340:Categories 2293:2008-12-24 2274:References 2253:Fick's law 1701:molar flux 1311:molar flux 105:Definition 76:Fick's law 2210:∇ 2204:⋅ 2201:∇ 2198:− 2178:⋅ 2175:∇ 2165:diffusion 2129:∂ 2124:ρ 2121:∂ 2098:⋅ 2095:∇ 2028:∑ 1983:∑ 1966:⟩ 1958:⟨ 1931:⟩ 1923:⟨ 1895:⟩ 1887:⟨ 1884:− 1596:∑ 1590:ρ 1561:ρ 1551:∑ 1545:ρ 1534:⟩ 1526:⟨ 1499:⟩ 1491:⟨ 1463:⟩ 1455:⟨ 1452:− 1432:ρ 1355:ρ 1231:ρ 1168:× 1162:π 1141:× 1122:− 1114:× 1102:× 1099:π 1084:− 1076:× 1065:× 1005:π 997:ρ 982:Δ 971:Δ 920:ρ 890:− 874:ρ 854:− 834:Δ 831:ρ 818:Δ 750:π 649:θ 646:⁡ 624:^ 615:⋅ 580:^ 537:^ 497:^ 415:^ 406:⋅ 385:∬ 356:∫ 229:Δ 221:Δ 210:→ 204:Δ 141:→ 2237:See also 1822:and the 479:, and a 462:membrane 82:, or in 62:, or Φ ( 40:SI units 2229:is the 1945:average 1513:average 1511:is the 1303:mixture 1250:where: 713:Example 703:through 667:is the 595:, then 302:surface 88:density 34:is the 21:physics 2326:  2310:  2225:where 1915:where 1637:where 1483:where 661:where 458:filter 296:, the 278:) and 178:where 2075:Usage 719:water 460:or a 111:limit 64:Greek 29:mass 2324:ISBN 2308:ISBN 2248:Flux 1390:The 1062:1000 707:only 692:sin 679:cos 471:The 451:area 449:The 31:flux 23:and 2163:of 1830:is 1398:is 1320:is 1073:1.5 799:is 643:cos 341:): 316:to 200:lim 134:lim 68:Phi 19:In 2342:: 2233:. 2167:: 2087:: 1313:. 1275:). 1265:= 1172:10 1159:16 1118:10 1080:10 699:no 552:. 333:− 90:. 58:, 54:, 50:, 46:, 27:, 2296:. 2227:D 2213:n 2207:D 2195:= 2189:n 2183:j 2144:, 2141:0 2138:= 2132:t 2115:+ 2109:m 2103:j 2060:. 2055:i 2051:, 2046:n 2039:j 2032:i 2022:c 2019:1 2014:= 2009:i 2004:u 1997:i 1993:c 1987:i 1977:n 1974:1 1969:= 1962:u 1927:u 1903:, 1899:) 1891:u 1879:i 1874:u 1868:( 1864:c 1861:= 1856:i 1852:, 1847:n 1840:j 1828:i 1808:i 1803:u 1796:i 1792:c 1788:= 1783:i 1779:, 1774:n 1767:j 1755:i 1739:. 1735:u 1731:c 1728:= 1722:n 1716:j 1697:c 1690:ρ 1676:. 1674:i 1668:i 1664:u 1659:, 1657:i 1651:i 1649:ρ 1642:ρ 1623:i 1619:, 1614:m 1607:j 1600:i 1587:1 1582:= 1577:i 1572:u 1565:i 1555:i 1542:1 1537:= 1530:u 1495:u 1471:, 1467:) 1459:u 1447:i 1442:u 1436:( 1429:= 1424:i 1420:, 1415:m 1408:j 1396:i 1376:. 1371:i 1366:u 1359:i 1351:= 1346:i 1342:, 1337:m 1330:j 1318:i 1285:m 1282:j 1272:u 1262:u 1255:ρ 1235:u 1228:= 1222:m 1216:j 1181:, 1176:4 1155:3 1150:= 1144:2 1136:2 1131:) 1125:2 1111:2 1107:( 1093:) 1087:3 1069:( 1056:= 1051:m 1047:j 1024:. 1018:t 1013:2 1009:r 1000:V 991:= 985:t 979:A 974:m 965:= 960:m 956:j 945:m 941:V 923:V 917:= 910:m 903:) 898:1 894:V 885:2 881:V 877:( 871:= 862:1 858:m 849:2 845:m 837:V 828:= 821:m 802:ρ 793:t 787:V 780:m 778:j 763:. 758:2 754:r 747:= 744:A 732:r 727:A 694:θ 689:m 687:j 681:θ 676:m 674:j 664:· 638:m 634:j 630:= 621:n 610:m 605:j 577:n 562:m 558:j 534:n 528:A 525:= 521:A 494:n 477:A 435:. 432:t 429:d 425:A 422:d 412:n 401:m 396:j 389:S 377:2 373:t 365:1 361:t 352:= 349:m 338:1 335:t 331:2 328:t 322:2 319:t 313:1 310:t 305:S 292:m 288:j 280:A 276:t 272:m 255:t 252:d 247:m 244:d 238:= 232:t 224:m 213:0 207:t 196:= 191:m 187:I 166:, 161:A 156:m 152:I 144:0 138:A 130:= 125:m 121:j 72:m 60:φ 56:Q 52:q 48:J 44:j

Index

physics
engineering
flux
rate of mass flow
SI units
Greek
Phi
Fick's law
molecular mass
Darcy's law
density
mass flow rate
limit
surface integral
surface
area
filter
membrane
macroscopically
vector area
unit vector
dot product
water
standard conditions
density of water
velocity field
mixture
average
concentration
average

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