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| 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/EX4.22 | |
| 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/EX4.22')
| -rwxr-xr-x | 858/CH4/EX4.22/example_22.sce | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/858/CH4/EX4.22/example_22.sce b/858/CH4/EX4.22/example_22.sce new file mode 100755 index 000000000..8508ea21f --- /dev/null +++ b/858/CH4/EX4.22/example_22.sce @@ -0,0 +1,29 @@ +clc
+clear
+printf("example 4.22 page number 163\n\n")
+
+//to find minimum fluidization velocity
+
+d=120*10^-6 //in m
+density=2500 //particle density in kg/m3
+e_min=0.45;
+density_water=1000 //in kg/m3
+viscosity=0.9*10^-3; //in Pa-s
+umf=(d^2*(density-density_water)*9.8*e_min^3)/(150*viscosity*(1-e_min));
+printf("minimum fludization velocity = %f m/s",umf)
+
+Re_mf=(d*umf*density_water)/(viscosity*(1-e_min));
+
+
+//given that uo/umf=10
+function[f] = F(e)
+ f = e^3+1.657*e-1.675;
+endfunction
+
+//initial guess
+x = 10;
+e = fsolve(x,F);
+
+printf("\n\ne = %f",e)
+length_ratio=(1-e_min)/(1-e);
+printf("\n\nratio of heights = %f",length_ratio)
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