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 /858/CH4/EX4.21/example_21.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 '858/CH4/EX4.21/example_21.sce')
| -rwxr-xr-x | 858/CH4/EX4.21/example_21.sce | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/858/CH4/EX4.21/example_21.sce b/858/CH4/EX4.21/example_21.sce new file mode 100755 index 000000000..f00ef1cb9 --- /dev/null +++ b/858/CH4/EX4.21/example_21.sce @@ -0,0 +1,26 @@ +clc
+clear
+printf("example 4.21 page number 160\n\n")
+
+//to find the pressure gradient
+
+Q=0.0003 //in m3/s
+d=0.05 //in m
+A=(3.14*d^2)/4;
+
+u=Q/A;
+
+density=1000; //in kg/m3
+viscosity=0.001; //in Pa-s
+e=0.3;
+dp=0.00125; //particle diameter in m
+
+Re=(dp*u*density)/(viscosity*(1-e));
+fm=(150/Re)+1.75;
+L=0.5 //in m
+delta_Pf=fm*((density*L*u^2)/dp)*((1-e)/e^3); //in Pa
+
+//applying bernoulli's equation, we get
+delta_P=delta_Pf-(density*9.8*L);
+pressure_gradient=delta_P/(L*1000); //in kPa/m
+printf("required pressure gradient = %f kPa/m of packed height",pressure_gradient)
|