From b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b Mon Sep 17 00:00:00 2001 From: priyanka Date: Wed, 24 Jun 2015 15:03:17 +0530 Subject: initial commit / add all books --- 2762/CH3/EX3.1.1/3_1_1.sce | 16 ++++++++++++++++ 2762/CH3/EX3.1.2/3_1_2.sce | 15 +++++++++++++++ 2762/CH3/EX3.1.3/3_1_3.sce | 19 +++++++++++++++++++ 2762/CH3/EX3.1.4/3_1_4.sce | 27 +++++++++++++++++++++++++++ 2762/CH3/EX3.1.5/3_1_5.sce | 15 +++++++++++++++ 2762/CH3/EX3.2.1/3_2_1.sce | 26 ++++++++++++++++++++++++++ 2762/CH3/EX3.2.2/3_2_2.sce | 16 ++++++++++++++++ 2762/CH3/EX3.3.2/3_3_2.sce | 25 +++++++++++++++++++++++++ 2762/CH3/EX3.3.3/3_3_3.sce | 20 ++++++++++++++++++++ 2762/CH3/EX3.4.3/3_4_3.sce | 45 +++++++++++++++++++++++++++++++++++++++++++++ 2762/CH3/EX3.5.1/3_5_1.sce | 18 ++++++++++++++++++ 11 files changed, 242 insertions(+) create mode 100755 2762/CH3/EX3.1.1/3_1_1.sce create mode 100755 2762/CH3/EX3.1.2/3_1_2.sce create mode 100755 2762/CH3/EX3.1.3/3_1_3.sce create mode 100755 2762/CH3/EX3.1.4/3_1_4.sce create mode 100755 2762/CH3/EX3.1.5/3_1_5.sce create mode 100755 2762/CH3/EX3.2.1/3_2_1.sce create mode 100755 2762/CH3/EX3.2.2/3_2_2.sce create mode 100755 2762/CH3/EX3.3.2/3_3_2.sce create mode 100755 2762/CH3/EX3.3.3/3_3_3.sce create mode 100755 2762/CH3/EX3.4.3/3_4_3.sce create mode 100755 2762/CH3/EX3.5.1/3_5_1.sce (limited to '2762/CH3') diff --git a/2762/CH3/EX3.1.1/3_1_1.sce b/2762/CH3/EX3.1.1/3_1_1.sce new file mode 100755 index 000000000..80d14caec --- /dev/null +++ b/2762/CH3/EX3.1.1/3_1_1.sce @@ -0,0 +1,16 @@ +//Transport Processes and Seperation Process Principles +//Chapter 3 +//Example 3.1-1 +//Principles of Momentum Transfer and Applications +//given data +rho=1.137; +mu=1.9e-5; +Dp=0.042; +v0=23; +Re=(Dp*v0*rho)/mu +//from the mentioned graph, +Cd=0.47;//drag coefficient as seen from the graph +Ap=(%pi*Dp*Dp)/4;//surface area of sphere +Fd=Cd*(v0*v0/2)*rho*Ap;//drag force +mprintf("drag coefficient= %f",Cd) +mprintf("drag force= %f N",Fd) diff --git a/2762/CH3/EX3.1.2/3_1_2.sce b/2762/CH3/EX3.1.2/3_1_2.sce new file mode 100755 index 000000000..4ef052c2b --- /dev/null +++ b/2762/CH3/EX3.1.2/3_1_2.sce @@ -0,0 +1,15 @@ +//Transport Processes and Seperation Process Principles +//Chapter 3 +//Example 3.1-2 +//Principles of Momentum Transfer and Applications +//given data +rho=997.2;//density of water at 300K in kg/m3 +v=1;//velocity of air in m/s +Dp=0.09;//diameter of a cylinder +mu=0.9142/1000;//viscosity of water Pa.s +Re=Dp*v*rho/mu;//Reynolds Number +Cd=1.4;//drag coefficient; found from a graph by the american chemical society +L=1;//length of the tube in m +Ap=L*Dp; +Fd=Cd*(v*v/2)*rho*Ap;//drag force in newtons +mprintf("the drag force is %f N",Fd) diff --git a/2762/CH3/EX3.1.3/3_1_3.sce b/2762/CH3/EX3.1.3/3_1_3.sce new file mode 100755 index 000000000..3829dd2c6 --- /dev/null +++ b/2762/CH3/EX3.1.3/3_1_3.sce @@ -0,0 +1,19 @@ +//Transport Processes and Seperation Process Principles +//Chapter 3 +//Example 3.1-3 +//Principles of Momentum Transfer and Applications +//given data +basis=1;//taking basis as 1 m3 of packed bed +rho=962;//bulk density of packed bed +m=rho*basis;//total mass +rho2=1600;//density of solid cylinders +V=m/rho2;//volume of the cylinder +E=(basis-V)/(basis);//void fraction +mprintf("void fraction = %f",E); +D=0.02;//diameter of cylinder +Av=6/D;// Av= Sp/Vp where Sp is the surface area of the particle and D is the diameter of the particle +Dp=6/Av;//effectice diameter +mprintf(" ii) effectice diameter = %f m",Dp); +a=(6/Dp)*(1-E);//value of a +mprintf(" iii) value of a= %f m-1",a) +//end diff --git a/2762/CH3/EX3.1.4/3_1_4.sce b/2762/CH3/EX3.1.4/3_1_4.sce new file mode 100755 index 000000000..87325f335 --- /dev/null +++ b/2762/CH3/EX3.1.4/3_1_4.sce @@ -0,0 +1,27 @@ +//Transport Processes and Seperation Process Principles +//Chapter 3 +//Example 3.1-4 +//Principles of Momentum Transfer and Applications +//given data +D=0.61;//diameter of bed in m +h=2.44;//height of bed +A=(3.14*D*D)/4;//cross section area in m2 +mdot=0.358;//mass flow rate of air in kg/s +E=0.38//void fraction +G=mdot/A; +Dp=0.0127;//diameter of spheres in m +mu=1.9e-5;//viscosity of air Pa.s +delL=2.44; +Re= (Dp*G/((1-E)*mu));//Reynolds Number +delP=0.05e+5;//assumed pressure difference in pascal +p1=1.115*101325;//air entering at this pressure in Pa +p2=p1-delP; +avgP=(p1+p2)/2;//average pressure +M=28.97;//molecular weight of air in SI units +R=8314.34;//gas constant +T=311;//temp of air in K +avgrho=(M/(R*T))*avgP;//Avg density +//(delP*rho/G*G)*(Dp/delL)*(E^3/(1-E))= (150/Re)+1.75: erguns equation in dimensionless groups +delPn=((150/Re)+1.75)*((G*G*delL*(1-E))/(avgrho*E*E*E*Dp));//calculated pressure drop +mprintf("calculated pressure drop= %f Pa",delPn) +//end diff --git a/2762/CH3/EX3.1.5/3_1_5.sce b/2762/CH3/EX3.1.5/3_1_5.sce new file mode 100755 index 000000000..eba51209a --- /dev/null +++ b/2762/CH3/EX3.1.5/3_1_5.sce @@ -0,0 +1,15 @@ +//Transport Processes and Seperation Process Principles +//Chapter 3 +//Example 3.1-5 +//Principles of Momentum Transfer and Applications +//given data +p=[0.25 0.40 0.35];//percentages of diff particle sizes +s=[25 50 75];//sizes of the particles in mm +phi=0.68;//sphericity +sump=0 +for i=1:3 + term=p(1,i)/(phi*s(1,i)) + sump=sump+term +end +Dpm=1/sump; +mprintf("mean diameter= %f mm",Dpm) diff --git a/2762/CH3/EX3.2.1/3_2_1.sce b/2762/CH3/EX3.2.1/3_2_1.sce new file mode 100755 index 000000000..89c3c9e1e --- /dev/null +++ b/2762/CH3/EX3.2.1/3_2_1.sce @@ -0,0 +1,26 @@ +//Transport Processes and Seperation Process Principles +//Chapter 3 +//Example 3.2-1 +//Principles of Momentum Transfer and Applications +//given data +rho=1.043;//density of air at 328.5K in kg/m3 +v=23;//velocity of air in m/s +D=0.6;//diameter of a cylinder +mu=2.03/100000;//viscosity of air Pa.s +delh=0.205;// 0.205m of water pitot tube reading +rhow=1000;//density of water +delP=delh*(rhow-rho)*9.80665;//pressure diff and g=9.80655 m/s2 +patm=101325;//atm pressure in pascals +p1=patm+0.02008*100000;//absolute pressure+ pressure diff +rhoc=(p1/patm)*1.043;//corrected air density +delH=10.7/1000;//manometer reading, m of water +Cp=0.98; +delP=delH*(rhow-rhoc)*9.80655;//pressure diff in Pa +v=Cp*((2*delP)/rhoc)^0.5;//max vel at center +Re=D*v*rhoc/mu;//Reynolds Number +vr=0.85;//from the given graph the ratio of avg vel/max vel is 0.85 +vavg=vr*v;//the average velcity in m/s +mprintf(" average velcity = %f m/s",vavg) +A=(3.14/4)*(D*D);//cross sec area in m2 +V=A*vavg;//volumetric flow rate in m3/s +mprintf("volumetric flow rate = %f m3/s",V) diff --git a/2762/CH3/EX3.2.2/3_2_2.sce b/2762/CH3/EX3.2.2/3_2_2.sce new file mode 100755 index 000000000..8f18271b8 --- /dev/null +++ b/2762/CH3/EX3.2.2/3_2_2.sce @@ -0,0 +1,16 @@ +//Transport Processes and Seperation Process Principles +//Chapter 3 +//Example 3.2-2 +//Principles of Momentum Transfer and Applications +//given data +delP=9.32e+4;//pressure diff in N/m2 +D1=0.1541;//external diameter in m +D0=0.0566;//internal diameter in m +Dr=D0/D1; +Co=0.61; +rho=878; //oil density in kg/m3 +v0=(Co/(sqrt(1-(Dr^4))))*sqrt((2*delP)/rho);//velocity calculation in m/s +A=(%pi/4)*D0*D0;//cross section area +V=A*v0;//volumetric flow rate +mprintf("the volumetric flow rate is %f m3/s",V); +//end diff --git a/2762/CH3/EX3.3.2/3_3_2.sce b/2762/CH3/EX3.3.2/3_3_2.sce new file mode 100755 index 000000000..723c71c89 --- /dev/null +++ b/2762/CH3/EX3.3.2/3_3_2.sce @@ -0,0 +1,25 @@ +//Transport Processes and Seperation Process Principles +//Chapter 3 +//Example 3.3-2 +//Principles of Momentum Transfer and Applications +//given data +Ps=741.7;//suction pressure in mm hg +Pd=769.6;//discharge pressure in mm hg +Patm=760;//atmospheric pressure in mm Hg +rho1=28.97*(1/22.414)*(273.2/366.3)*(Ps/Patm);//air density at suction: mol wt= 28.97 kg air/kg mol for 22.414 m3/kg mol at 101.3 kPa and 273.2 K +rho2=rho1*(Pd/Ps); +rhoavg=(rho1+rho2)/2 +V=28.32;//volumetric flow rate in m3/s +Ts=294.1;//temp at suction +mdot=V*(1/60)*(1/22.414)**(273.2/Ts)*28.97;//mass flow rate of gas +Patm=760;//atm pressure in mm Hg +Hp=((Pd-Ps)/Patm)*(101325/rhoavg);//pressure head in J/kg +v1=0;//air is stationary +v2=45.7;//discharge velocity in m/s +vd=(((v2^2)-(v1^2))/2);//developed velocity +z1=0; +sumF=0; +Ws=Hp+vd;//substituting and solving for Ws by mechanical energy balance equation for a closed system in J/kg +n=60/100;//efficiency given is 60% +bkW= (Ws*mdot)/(n*1000);// brake kW +mprintf(" brake kW= %f hP",bkW) diff --git a/2762/CH3/EX3.3.3/3_3_3.sce b/2762/CH3/EX3.3.3/3_3_3.sce new file mode 100755 index 000000000..6106624c6 --- /dev/null +++ b/2762/CH3/EX3.3.3/3_3_3.sce @@ -0,0 +1,20 @@ +//Transport Processes and Seperation Process Principles +//Chapter 3 +//Example 3.3-3 +//Principles of Momentum Transfer and Applications +//given data +p1=137.9*1000; +p2=551.6*1000; +T1=26.7+273.2; +mmol=7.56/1000; +M=16; +mdot=mmol*M; +gam=1.31; +R=8314.3; +nWs1=(gam/(gam-1))*(R*T1/M)*((p2/p1)^((gam-1)/gam)-1); +n=80/100; +bkW1=(nWs1*mdot)/(n*1000); +mprintf("i) brake power= %f kW",bkW1) +nWs2=(R*T1/M)*log(p2/p1); +bkW2=(nWs2*mdot)/(n*1000); +mprintf("ii) brake power= %f kW",bkW2) diff --git a/2762/CH3/EX3.4.3/3_4_3.sce b/2762/CH3/EX3.4.3/3_4_3.sce new file mode 100755 index 000000000..77f1c3057 --- /dev/null +++ b/2762/CH3/EX3.4.3/3_4_3.sce @@ -0,0 +1,45 @@ +//Transport Processes and Seperation Process Principles +//Chapter 3 +//Example 3.4-3 +//Principles of Momentum Transfer and Applications +//given data +H1=1.83; +DT1=H1; +V1=(%pi*DT1*DT1*H1)/4; +V2=3*V1;//given +R=(V2/V1)^(1/3); +DT2=R*DT1; +Da1=0.61; +Da2=R*Da1; +W1=0.122; +W2=R*W1; +J1=0.15; +J2=R*J1; +N1=1.5;//no. of revs +N2=N1*((1/R)^(2/3)) +rho=929; +mu=0.01; +Re=(Da2*Da2*N2*rho)/(mu) +Np=5; +P2=Np*rho*(N2^3)*(Da2^5); +P1=Np*rho*(N1^3)*(Da1^5); +//a) +N2=N1*((1/R)^(2/3)); +sP1=P1/V1; +sP2=P2/V2; + +mprintf("scaled up no. of revs %f rev/s",N2); +mprintf("scaled up Power %f W",P2); +mprintf(" power per unit volume= %f kW/m3",sP1/1000) +if (sP1/1000)<0.8 then + disp(" Value of power is less than permissible condition(0.8 kW/m3 for mass transfer)") +end +mprintf(" scaled up Power %f m3",P2); +mprintf(" power per unit volume %f W/m3",(P2/(V2*1000))); +//b) +N2b=N1*(1/R); +mprintf(" scaled up revolutions %f rev/s",N2b); +P2b=Np*rho*(N2b^3)*(Da2^5); +mprintf(" scaled up Power %f kW",P2b); +mprintf(" power per unit volume %f W/m3",(P2b/V2)); + diff --git a/2762/CH3/EX3.5.1/3_5_1.sce b/2762/CH3/EX3.5.1/3_5_1.sce new file mode 100755 index 000000000..fb7720c55 --- /dev/null +++ b/2762/CH3/EX3.5.1/3_5_1.sce @@ -0,0 +1,18 @@ +//Transport Processes and Seperation Process Principles +//Chapter 3//Example 3.5-1 +//Principles of Momentum Transfer and Applications +//given data +Kd=15.23; +nd=0.4; +D=0.0524; +V=0.0728; +L=14.9; +rho=1041; +delP=(Kd*4*L/D)*((8*V/D)^nd);//pressure drop +Ff=delP/rho;//friction loss +nd=0.4; +g=8; +Re=((D^nd)*(V^(2-nd))*rho)/(Kd*(g^(nd-1))); +f=16/Re;//friction factor +delP=4*f*rho*(L/D)*(V*V/2); +mprintf("pressure drop= %f kN/m2",delP/1000) -- cgit