diff options
Diffstat (limited to '2063/CH1/EX1.18/1_18.sce')
| -rwxr-xr-x | 2063/CH1/EX1.18/1_18.sce | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/2063/CH1/EX1.18/1_18.sce b/2063/CH1/EX1.18/1_18.sce new file mode 100755 index 000000000..036ae2d40 --- /dev/null +++ b/2063/CH1/EX1.18/1_18.sce @@ -0,0 +1,20 @@ +clc
+clear
+//Input data
+r=15;//Compression Ratio of a diesel engine
+P1=1;//Operating Pressure of a diesel engine in bar
+r1=1.4;//Isentropic constant
+V1=15;//Volume at the start of compression stroke in m^3
+V3=1.8;//Volume at the end of constant Pressure heat addition in m^3
+V4=V1;//Volume at the end of Isentropic expansion stroke in m^3
+V2=1;//Volume at the end of isentropic compression stroke in m^3
+Vs=V1-V2;//Swept volume in m^3
+
+//Calculations
+P2=P1*(r)^r1;//Pressure at the end of Isentropic compression of air
+P3=P2;//Pressure at the end of constant pressure heat addition in bar
+P4=P3*(V3/V4)^r1;//Pressure at the end of Isentropic expansion stroke in bar
+Pm=(V2/Vs)*(P2*((V3/V2)-1)+(P3*(V3/V2)-P4*(V4/V2))/(r1-1)-(P2-P1*(V1/V2))/(r1-1));//Mean effective pressure in bar
+
+//Output
+printf('Mean effective pressure of the cycle is %3.2f bar',Pm)
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