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authorpriyanka2015-06-24 15:03:17 +0530
committerpriyanka2015-06-24 15:03:17 +0530
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+clc;
+warning("off");
+printf("\n\n example5.10 - pg171");
+// given (from example 5.9)
+na=2; // moles of a
+nb=3; // moles of b
+nc=4; // moles of c
+mma=2; //molecular weight of a
+mmb=3; //molecular weight of b
+mmc=4; //molecular weight of c
+ma=na*mma; //[g] weight of a
+mb=nb*mmb; //[g] weight of b
+mc=nc*mmc; //[g] weight of c
+NabyA=2+2; //[mol/cm^2*s] - molar flux = diffusing flux +convected flux
+NbbyA=-1+3; //[mol/cm^2*s] - molar flux = diffusing flux +convected flux
+NcbyA=0+4; //[mol/cm^2*s] - molar flux = diffusing flux +convected flux
+NtbyA=NabyA+NbbyA+NcbyA; //[mol/cm^2*s] - total molar flux
+// on a mass basis,these corresponds to
+nabyA=4+4; //[g/cm^2*s]; - mass flux = diffusing flux +convected flux
+nbbyA=-3+9; //[g/cm^2*s]; - mass flux = diffusing flux +convected flux
+ncbyA=0+16; //[g/cm^2*s]; - mass flux = diffusing flux +convected flux
+// concentrations are expressed in molar basis
+CA=na/vol; //[mol/cm^3]
+CB=nb/vol; //[mol/cm^3]
+CC=nc/vol; //[mol/cm^3]
+CT=CA+CB+CC; //[mol/cm^3] - total concentration
+// densities are on a mass basis
+pa=ma/vol; //[g/cm^3]
+pb=mb/vol; //[g/cm^3]
+pc=mc/vol; //[g/cm^3]
+Ua=NabyA/CA; //[cm/sec];
+Ub=NbbyA/CB; //[cm/sec];
+Uc=NcbyA/CC; //[cm/sec];
+U=(pa*Ua+pb*Ub+pc*Uc)/(pa+pb+pc);
+Ustar=(NtbyA/CT);
+// the fluxes relative to mass average velocities are found as follows
+JabyA=CA*(Ua-U); //[mol/cm^2*sec]
+JbbyA=CB*(Ub-U); //[mol/cm^2*sec]
+JcbyA=CC*(Uc-U); //[mol/cm^2*sec]
+printf("\n\n fluxes relative to mass average velocities are-");
+printf("\n\n Ja/A=%fmol/cm^2*sec",JabyA);
+printf("\n Jb/A=%fmol/cm^2*sec",JbbyA);
+printf("\n Jc/A=%fmol/cm^2*sec",JcbyA);
+jabyA=pa*(Ua-U); //[g/cm^2*sec]
+jbbyA=pb*(Ub-U); //[g/cm^2*sec]
+jcbyA=pc*(Uc-U); //[g/cm^2*sec]
+printf("\n\n ja/A=%fg/cm^2*sec",jabyA);
+printf("\n jb/A=%fg/cm^2*sec",jbbyA);
+printf("\n jc/A=%fg/cm^2*sec",jcbyA);
+// the fluxes relative to molar average velocity are found as follows
+JastarbyA=CA*(Ua-Ustar); //[mol/cm^2*sec]
+JbstarbyA=CB*(Ub-Ustar); //[mol/cm^2*sec]
+JcstarbyA=CC*(Uc-Ustar); //[mol/cm^2*sec]
+printf("\n\n fluxes relative to molar average velocities are-");
+printf("\n\n Ja*/A=%fmol/cm^2*sec",JastarbyA);
+printf("\n Jb*/A=%fmol/cm^2*sec",JbstarbyA);
+printf("\n Jc*/A=%fmol/cm^2*sec",JcstarbyA);
+jastarbyA=pa*(Ua-Ustar); //[g/cm^2*sec]
+jbstarbyA=pb*(Ub-Ustar); //[g/cm^2*sec]
+jcstarbyA=pc*(Uc-Ustar); //[g/cm^2*sec]
+printf("\n\n ja*/A=%fg/cm^2*sec",jastarbyA);
+printf("\n jb*/A=%fg/cm^2*sec",jbstarbyA);
+printf("\n jc*/A=%fg/cm^2*sec",jcstarbyA);
+