1 AIT Asian Institute of Technology

Near field dispersion of clay water mixture from submerge diffuser

AuthorLek Prapasajchavet
Call NumberAIT Thesis no. WA-85-21
Subject(s)Diffusion in hydrology
NoteA thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering, School of Engineering and Technology
PublisherAsian Institute of Technology
AbstractAn experimental study of discharge of dense clay water mixture was conducted. Of interest are the near field dilution of mud flow, mud flow thickness and head wave velocity obtained form discharging through a vertical pipe, a conical diffusor located under water surface, and surface discharge by a horizontal pipe. The study was carried out for both cases receiving fluid having quiescent state and steady uniform flow. An experimental was performed in a laboratory flume in which a single dense jet issuing from a vertical pipe and a conical diffusor having different discharge height, initial concentration, initial velocity, and cross flow currents velocities were evaluated. It was found hat the near field dilution of submerged mud flow can be treated in three separated regions namely; the jet region, impingement region and radial stratified flow region. Empirical equation for predicting the mud flow thickness, concentration dilution and head wave velocity were obtained. Application of the results to reduce the turbidity to design level can be made if the effluent flow rate, initial concentration, receiving water depth and across flow current are known. A design procedure to reduce the turbidity to meet a specified level of near field mixing is suggested.
Year1984
TypeThesis
SchoolSchool of Engineering and Technology (SET)
DepartmentOther Field of Studies (No Department)
Academic Program/FoSWater Resources Research Engineering (WA)
Chairperson(s)Prida Thimakorn
Examination Committee(s)Suphat Vongvisessomjai ; Wang, Tsan-Wen
Scholarship Donor(s)Federal Republic of Germany
DegreeThesis (M.Eng.) - Asian Institute of Technology, 1984


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