diff options
| author | priyanka | 2015-06-24 15:03:17 +0530 |
|---|---|---|
| committer | priyanka | 2015-06-24 15:03:17 +0530 |
| commit | b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b (patch) | |
| tree | ab291cffc65280e58ac82470ba63fbcca7805165 /2126/CH4/EX4.14/14.sce | |
| download | Scilab-TBC-Uploads-b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b.tar.gz Scilab-TBC-Uploads-b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b.tar.bz2 Scilab-TBC-Uploads-b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b.zip | |
initial commit / add all books
Diffstat (limited to '2126/CH4/EX4.14/14.sce')
| -rwxr-xr-x | 2126/CH4/EX4.14/14.sce | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/2126/CH4/EX4.14/14.sce b/2126/CH4/EX4.14/14.sce new file mode 100755 index 000000000..2d4255664 --- /dev/null +++ b/2126/CH4/EX4.14/14.sce @@ -0,0 +1,38 @@ +clc
+clear
+
+//input data
+k=1.3 //Adiabatic constant
+R=466 //Gas constant in J/kg-K
+P1=0.345 //Static Pressure at entry in Pa
+T1=312 //Static Temperature at entry in K
+C1=65.5 //Entry velocity in m/s
+q=4592 //The heat transferred per unit mass flow in kJ/kg
+
+//calculation
+a1=sqrt(k*R*T1) //Sound velocity in m/s
+M1=C1/a1 //Mach number at entry
+t1=0.9965 //Temperature ratio at entry from gas tables (M1,k=1.3,isentropic)
+To1=T1/t1 //Total stagnation temperature at inlet in K
+p1=2.235 //Static Pressure ratio at critical state from gas tables (Rayleigh,k=1.3,M1)
+Pt=P1/p1 //Static critical pressure in bar
+c1=0.051 //Velocity ratio at critical state from gas tables (Rayleigh,k=1.3,M1)
+Ct=C1/c1 //Critical velocity in m/s
+t2=0.112 //Static temperature ratio at critical state from gas tables (Rayleigh,k=1.3,M1)
+Tt=T1/t2 //Static critical temperature in K
+t3=0.098 //Stagnation temperature ratio at critical state from gas tables (Rayleigh,k=1.3,M1)
+Tot=To1/t3 //Stagnation critical temperature in K
+Cp=(k*R)/(k-1) //Specific heat of dry air in kJ/kg-K
+To2=(q/Cp)+To1 //Stagnation exit temperation in K
+t4=(To2/Tot) //Stagnation Temperature ratio at exit
+M2=0.60 //Mack number at exit from gas tables (Rayleigh,t4)
+p2=1.567 //Static Pressure ratio at exit from gas tables (Rayleigh,t4,k=1.4)
+P2=p2*Pt //Static Pressure at exit in bar
+t5=0.884 //Static temperature ratio at exit from gas tables (Rayleigh,t4,k=1.4)
+T2=t5*Tt //Static exit temperature in K
+c2=0.564 //Velocity ratio at critical state from gas tables (Rayleigh,k=1.4,t4)
+C2=Ct*c2 //exit velocity in m/s
+qmax=Cp*(Tot-To1)/10^3 //Maximum possible heat transfer in kJ/kg
+
+//output
+printf('(A)Heat required to accelerate the gas from the inlet condition to sonic condition is %3.2f kJ/kg\n (B)The pressure and temperature at sonic condition are %3.3f bar and %3.2f K respectively\n (C)The properties at exit are:\n Pressure is %3.3f bar\n Temperature is %3.2f K\n Velocity is %3i m/s',qmax,Pt,Tt,P2,T2,C2)
|