02742nam a2200253   450000500170000000800410001703500150005810000250007324500570009826000520015530000160020749000270022350001450025050200580039552016890045365000190214265000230216170000350218470000510221970000470227071000470231781000590236485600650242320260818114815.0230798         th                  eng    a.b1030177x1 aJoshi, Gyanendra Man10aGas-liquid mass transfer through a crack in concrete  aBangkok :bAsian Institute of Technology,c1991  a106, A18 p.1 aThesis ;vno. ST-91-09  aA thesis submitted in partial fulfillment of the requirements for the  degree of Master of Engineering, School of Engineering and Technology  aThesis (M.Eng.) - Asian Institute of Technology, 1991  aTo calibrate the mathematical expression and the finite element discretized equation of flow through  the concrete crack, correlation of wall roughness coefficient and flow coefficient with the concrete  crack width are developed from the experiment results. As no experiment data was available for  the liquid flow through concrete crack, experiment was carried out to find the above correlation.  For the gas flow, the experiment data is taken from the previous experiments.  Finite element equation is developed for two phase flow through the concrete crack with mass  transfer. The finite element equation is derived from the basic governing equation of two phase  flow. The equation is formulated in such a way that it can be used also for single phase flow, either  liquid or gas with suitable flow constant. In this study the finite element equation is verified first  for single phase flow by comparing with the experimental results.  A simplified two phase flow through the concrete crack, with rapid phase transformation such as  inflammable liquified gas, is studied and for this, mathematical expression are developed for varying  crack width along the concrete crack length. This study is done to know the relation between leakage  and liquid-gas spatial ratio for various crack width. From this study, it helps in designing the  reinforced concrete containment structures and guiding the engineering decisions, in such way that  in case cracks are formed due to uncontrollable events, such as earthquake and foundation settlement,  appropriate concrete crack size and shape are seeked to control the leakage below the allowable  crack given by the limit state of design. 0aTwo-phase flow 0aConcretexCracking1 aMaekawa, Koichi, eChairperson0 aWorsak Kanok-Nukulchai,eExamination Committee1 aSivakumaran, K.S., eExamination committee2 aAustralian Government, eScholarship Donor2 aAsian Institute of Technology.tThesis ;vno. ST-91-09  3Full-Textuhttp://203.159.5.9/ait-thesis/detail.php?q=B17702