02520nam a2200265 a 4500 vtls000045167 KUKTEM 20251114204423.0 100223t2009 my a f m 000 0 eng|d THE0002405(Local) 201905271346 shamsul 201203211537 Fida 201107132307 VLOAD 201002231104 ida UMP TA357.M84 S25 2009 rs Bc. Mohd Saidi Wan Ahmad CFD simulation of bubbly two-phase flow in horizontal pipes / Mohd Saidi Wan Ahmad Kuantan, Pahang : UMP, 2009 xiv, 69 p. : ill. (some col.) ; 30 cm. + 1 CD-ROM Project paper (Bachelor of Chemical Engineering (Gas Technology)) -- Universiti Malaysia Pahang - 2009 Bibliography : p. 47-50 Modeling of two phase flow, particularly liquid-vapor flow under diabatic conditions inside a horizontal pipe using CFD simulation is difficult with the available two phase models in FLUENT due to continuously changing flow patterns. In the present analysis, CFD analysis of air-water bubbly two-phase flow inside a horizontal pipe of inner diameter, 38.1 mm and 2000 mm length has been modeled using the volume averaged multiphase flow equations. Liquid volumetric superficial velocities varied at constant 1.56 m/s and gas volumetric superficial velocities varied in the range from 0.15 to 0.8 m/s. The average gas volume fraction varied in the range from 4% to 16%. The predicted gas volume fraction and mean gas velocity are compared with the experimental data that has been run before. The model prediction shows better agreement with experimental data is obtained using k-ε model with constant bubble size (1 mm). The results indicate that the volume fraction has a maximum near the upper pipe wall, and the internal flow structure is varies with increasing superficial gas velocity. It was found that increasing the superficial gas velocity at fixed superficial liquid velocity would increase the local gas volume fraction. The simulation results were consistent with experimental observations. An interesting feature of the liquid velocity distribution is that it tends to form a fully developed turbulent pipe flow profile at the lower part of the pipe, whereas in the top of the pipe a different flow exists.-Author- Gas flow Two-phase flow Pipelines 0 0 0 1 10000 10000 2019-09-04 0 TA357.M84 S25 2009 rs Bc. 0000042875 2019-09-04 00:00:00 1 2019-09-04 PSM 0 0 0 1 10000 10000 2019-09-04 0 CD 3965 | TA357.M84 S25 2009 rs Bc. 0000042876 2019-09-04 00:00:00 1 2019-09-04 PSM VIRTUA40 1739 1745 VTLSSORT0080*0200*0400*0900*1000*2450*2600*3000*5020*5040*5200*6500*6501*6502*9992