02124nam a2200241   450000500170000000800410001703500150005810000180007324500700009126000520016130000100021349000220022350001620024550200580040752010890046565000360155470000350159070000450162570000480167071000450171881000540176385600650181720260818094939.0200198         th                  eng    a.b1022712x1 aRahman, Ataur10aEffect of flow conditions on friction coefficient in open channel  aBangkok :bAsian Institute of Technology,c1977  a63 p.1 aThesis ;vno. 948  aA thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering of the Asian Institute of Technology, Bangkok, Thailand  aThesis (M.Eng.) - Asian Institute of Technology, 1977  aAn exploratory investigation of the effect of flow conditions on  friction coefficient of open· channel was carried out . Two set s of experiments were performed under smooth and rough boundary conditions, in a slope adjustable flume with a length of 12.2 m and width of .307 m. ·For the smooth  boundary condition the side walls were made of glass while the bed was of smooth plastic. For the rough boundary condition the flume was roughened by sand grains of size 1.18 mm. All the experiments were conducted under non uniform flow condition.  The results obtained in this study indicated the effects of flow  profiles and Froude number on the friction coefficient of open channel flow. The values of friction coefficients obtained· in this investigation are higher  in the case of M1 flow condition than in the M2 flow condition. Under M1 flow profile friction coefficients 'f' and 'n' increase considerably as Reynolds number decreases and vice versa. But in the case of M2 flow  profile ' f' and 'n' increase or decrease very smoothly as Reynolds number decreases or increases. 0aHydraulicsxMathematical models1 aWatanabe, Akira, eChairperson0 aPrida Thimakorn, eExamination Committee1 aOverbeek, Henk Jen, eExamination Committee2 aGovernment of Italy, eScholarship Donor2 aAsian Institute of Technology.tThesis ;vno. 948  3Full-Textuhttp://203.159.5.9/ait-thesis/detail.php?q=B22776