1 AIT Asian Institute of Technology

Impingement of a two dimensional water jet upon a vertical wall

AuthorVidhaya Samaharn
Call NumberAIT Thesis no. 72
Subject(s)Jets--Fluid dynamics

NoteA thesis submitted in partial fulfillment if the requirements for the degree of Master of Engineering in the SEATO Graduate School of Engineering, Bangkok, Thailand.
PublisherAsian Institute of Technology
AbstractWhen a free liquid jet impinges upon a wall the resulting flow phenomenon may be called a jet transition. This study considers the case where the wall is vertical and the liquid jet is inclined to the horizontal. Angles of inclination were considered from 7.5° to 45° with the horizontal and water was used as the liquid. The geometry of the jet transition was defined in terms of the angle of inclination and Froude number of the jet. Also, the momentum relationships in the vertical and horizontal direction were considered. In the vertical direction the weight of the jet transition was compared with the change in momentum flux in that direction while in the horizontal direction the wall force, obtained by integrating pressure, was compared with the change of momentum flux in the horizontal direction. In the horizontal direction the momentum equation was satisfied for most runs which indicated verification of the experimental pressure data and velocity in the horizontal direction. In the vertical direction it was more difficult to verify the momentum equation because of air entrainment effects. Energy losses were also studied here; however, the results were variable due to difficulties encountered with air entrainment in the jet transition. In spite of this difficulty definite trends were established between the energy loss and the significant independent parameters. It is believed that the results obtained herein should be quite useful to engineers that might be confronted with the problem of a liquid jet which strikes a vertical wall.
Year1964
TypeThesis
SchoolStudent Research Before 1979
DepartmentOther Field of Studies (No Department)
Academic Program/FoSThesis (Year <=1979)
Chairperson(s)Dr. John A. Roberson;
Examination Committee(s)Dr. Norbert L. Ackermann;Dr. Niwat Daranandana;Dean Milton E. Bender, Jr.
DegreeThesis (M.Eng.) - SEATO Graduate School of Engineering


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