============================================================ MASS DIFFUSION CALCULATION ENGINE ============================================================ Calculation Mode = Diffusion through a Stagnant Gas B Mode Code = 2 Temperature = 25.00 deg-C Total Pressure = 101.33 kPa Binary Diffusivity D_AB = 2.6000E-05 m2/s Film Thickness (L) = 0.1000 m Molecular Weight M_A = 18.02 g/mol --- BOUNDARY CONDITIONS ------------------------------------- Boundary 1 Partial P_A1 = 3.1700 kPa Boundary 2 Partial P_A2 = 0.0000 kPa Boundary 1 Mole Frac yA1 = 0.031285 Boundary 2 Mole Frac yA2 = 0.000000 --- ENGINE RESULTS ------------------------------------------ Total Concentration C = 40.8740 mol/m3 Log-Mean Pressure P_Blm = 99.7316 kPa Mass Transfer Coeff (hm) = 0.000264 m/s Molar Flux of A (N_A) = 3.3779E-04 mol/m2.s Mass Flux of A (n_A) = 6.0853E-03 g/m2.s --- LOCAL PROFILE ALONG FILM -------------------------------- x [m] y_A [-] C_A [mol/m3] P_A [kPa] ----------------------------------------------------------- 0.0000 0.031285 1.2788 3.1700 0.0025 0.030515 1.2473 3.0920 0.0050 0.029745 1.2158 3.0139 0.0075 0.028973 1.1843 2.9357 0.0100 0.028201 1.1527 2.8575 0.0125 0.027429 1.1211 2.7792 0.0150 0.026656 1.0895 2.7009 0.0175 0.025882 1.0579 2.6225 0.0200 0.025108 1.0263 2.5440 0.0225 0.024333 0.9946 2.4655 0.0250 0.023557 0.9629 2.3869 0.0275 0.022781 0.9311 2.3083 0.0300 0.022004 0.8994 2.2296 0.0325 0.021227 0.8676 2.1508 0.0350 0.020448 0.8358 2.0719 0.0375 0.019670 0.8040 1.9930 0.0400 0.018890 0.7721 1.9141 0.0425 0.018111 0.7403 1.8351 0.0450 0.017330 0.7083 1.7560 0.0475 0.016549 0.6764 1.6768 0.0500 0.015767 0.6445 1.5976 0.0525 0.014985 0.6125 1.5183 0.0550 0.014202 0.5805 1.4390 0.0575 0.013418 0.5484 1.3596 0.0600 0.012634 0.5164 1.2801 0.0625 0.011849 0.4843 1.2006 0.0650 0.011063 0.4522 1.1210 0.0675 0.010277 0.4201 1.0413 0.0700 0.009490 0.3879 0.9616 0.0725 0.008703 0.3557 0.8818 0.0750 0.007915 0.3235 0.8020 0.0775 0.007126 0.2913 0.7221 0.0800 0.006337 0.2590 0.6421 0.0825 0.005547 0.2267 0.5620 0.0850 0.004756 0.1944 0.4819 0.0875 0.003965 0.1621 0.4018 0.0900 0.003173 0.1297 0.3216 0.0925 0.002381 0.0973 0.2413 0.0950 0.001588 0.0649 0.1609 0.0975 0.000794 0.0325 0.0805 0.1000 0.000000 0.0000 0.0000 --- CORRELATIONS USED --------------------------------------- Stefan's Diffusion Law (diffusion through stagnant gas B, logarithmic profile). Total concentration computed from ideal gas equation of state.