03326nas|a2200409 i 4500 20260817162112.0 121095s1983 th uu m rtt 00| a1eng d .b10069008 AIT RSPR no. IE-83-22 Yogeswaran, Theivanayagam An algorithm for designing optimal water distribution systems Bangkok : Asian Institute of Technology, 1983 iv, 22, A-4, B-8, C-12 p. Research studies project report ; no. IE-83-22 A research study submitted in partial fulfillment of the requirements for the degree of Master of Engineering, School of Engineering and Technology Research Studies Project Report (M. Eng.) - Asian Institute of Technology, 1983 A method is developed for the optimal design of single source, looped gravity fed water distribution systems subjected to a s ingle loading pattern .This method is based on a recent development in the field of looped water distribution systems , so called linear programming gradient (LPG) method ,due to the work of Aleprovits and Shamir ( 1) {u2022} The LPG method has the following drawbacks: the final solution depends much on the starting flow pattern , and the solution does not necessarily terminate at a local minimum point. Our new method strengthens the LPG method in the following aspects: to eliminate high cost flow patterns for the initial solution in a systematic manner, and to modify the stepsize calculation to arrive at a local optimum solution. This new method is applied to the test problem in (2) and a local optimal solution of cost $408,114 is obtained, which is a considerable improvement compared to the solution of $443,031 obtained in (2). ----------- ( 1 ) Aleprovits a nd Shamir ( 1977) " Design of optimal water distribution systems ", Water resources research, Vol13 pp 885-900 (2 ) Quindry. G.E ; Brill, E.D.; Liebman, J.C and Robison, A . , (1 979) "Comments on design of optimal water distribution systems" by Water Resources research. Vol 15 pp 987-990 Water Distribution Mathematical models Fujiwara, Okitsugu, Chairperson Oudheusden, Dirk L. Van, Examination Committee Orth, Hermann M., Examination Committee Carl Duisberg Gesellschafte, Scholarship Donor Asian Institute of Technology. Research studies project report ; no. IE-83-22 Full-Text http://203.159.5.9/ait-thesis/detail.php?q=B20904 .b10069008 mnait y 240711 2 951012 m a y 3 mnait mnait mnarc 20 40 Barcode : 30050002949567 CREATED : 1995-10-13 RECORD # : i10066640 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 Barcode : 30050003128443 CREATED : 1995-10-13 RECORD # : i10066652 LPATRON : 1011010 LCHKIN : 2000-02-21 # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 2 TOT RENEW : 0 Barcode : 30050160110119 CREATED : 2016-08-04 RECORD # : i12931688 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 3867 3867 0 0 0 0 MAIN MAIN mnait 2026-08-17 10.00 0 AIT RSPR no. IE-83-22 30050002949567 2026-08-17 16:21:12 1 2026-08-17 20 0 0 0 0 MAIN MAIN mnait 2026-08-17 10.00 0 AIT RSPR no. IE-83-22 30050003128443 2026-08-17 16:21:12 2 2026-08-17 20 0 0 0 0 MAIN MAIN mnarc 2026-08-17 0 AIT RSPR no. IE-83-22 30050160110119 2026-08-17 16:21:12 1 2026-08-17 40