000 02618nam a2200253 a 4500
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005 20251114204520.0
008 121129t2012 my a f m 000 0 eng d
020 _aTHE0004382(Local)
039 9 _a201905161143
_brohana
_y201211291037
_zFida
040 _aUMP
090 _aTP248.25.B55 A33 2012 rs Bc.
100 1 _aNurul Aida Jamaluddin
245 1 0 _aComputational fluid dynamics of flooding, loading and fully dispersed regime in gas-liquid stirred tank /
_cNurul Aida Jamaluddin
260 _aKuantan, Pahang :
_bUMP,
_c2012
300 _axviii, 65 p. :
_bill. ;
_c30 cm. +
_e1 CD-ROM
502 _aProject paper (Bachelor of Chemical Engineering) -- Universiti Malaysia Pahang - 2012
504 _aBibliography : p. 59-65
520 3 _aThe main aim of this work is to perform computational fluid dynamics on gas-liquid stirred tank operating under flooding, loading and fully dispersed regime. This computational method was conducting with the combination of computational fluid dynamics (CFD) and drag model changes by using standard FLUENT model. This current work was attempted to predict the gas hold-up and gassed power number similarly like the result obtained by Ford et al. (2008). The overall research methodology consists of two main steps. First step is about drawing the gas-liquid stirred tank geometric and set the set-up and for the second step is about analysis the flow in gas-liquid stirred tank. After the boundary and the tank geometry have been set up, the selected mathematical model were employed; in the multiphase model, Eulerian-Eulerian model has been used while in turbulence model, twophase standard k-ε has been employed. Besides that, the drag model of bubble by Schiller & Naumann (1935) was carried out. Diameter of bubbles is taken into account by employed the equation of Sauter mean diameter proposed by Calderbank (1958). The gassed power number and gas hold-up inside gas-liquid stirred tank were found to be in fair agreement to the experimental data adopted from Ford et al. (2008). The advantages of this computational method are the operating cost is lower compared to experimental method and besides, it can reduce the time taken to evaluate the performance of gas-liquid STR by neglecting the prototype‘s design. Through this study, CFD model may be useful to eliminate the impeller flooding in gas-liquid STR.
650 0 _aBioreactors
_xComputer simulation
650 0 _aBiochemical engineering
_xComputer simulation
999 _aVIRTUA40
_c3380
_d3386
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