AI SearchA study of compound weirs (Record no. 114525)
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| 000 -LEADER | |
|---|---|
| fixed length control field | 03568nam a2200397 4500 |
| 005 - DATE AND TIME OF LATEST TRANSACTION | |
| control field | 20260818223013.0 |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION | |
| fixed length control field | 030698 th eng |
| 035 ## - SYSTEM CONTROL NUMBER | |
| System control number | .b10649979 |
| 099 #9 - LOCAL FREE-TEXT CALL NUMBER (OCLC) | |
| Classification number | AIT Thesis no.WA-87-1 |
| 100 1# - MAIN ENTRY--PERSONAL NAME | |
| Personal name | Abbas, Muhammad Akhtar |
| 245 12 - TITLE STATEMENT | |
| Title | A study of compound weirs |
| 260 ## - PUBLICATION, DISTRIBUTION, ETC. | |
| Place of publication, distribution, etc. | Bangkok : |
| Name of publisher, distributor, etc. | Asian Institute of Technology, |
| Date of publication, distribution, etc. | 1987 |
| 300 ## - PHYSICAL DESCRIPTION | |
| Extent | 135 p. |
| 490 1# - SERIES STATEMENT | |
| Series statement | Thesis ; |
| Volume/sequential designation | no. WA-87-1 |
| 500 ## - GENERAL NOTE | |
| General note | A thesis study submitted in partial fulfillment of the requirements for the degree of Master of Engineering, School of Engineering and Technology |
| 502 ## - DISSERTATION NOTE | |
| Dissertation note | Thesis (M.Eng.) - Asian Institute of Technology, 1987 |
| 520 ## - SUMMARY, ETC. | |
| Summary, etc. | Parshall flume, standard rectangular weir, and 90° V-notch weir are commonly used as flow measurement devices. All of them show good applicability within a limited range of discharge to be measured. However, in a small watershed area when the rainfall is not uniformly distributed, heavy rainfall in wet season and the low flow during the dry season, ensures considerable fluctuation of the discharges. The existing devices are not appropriate for the flow measurement under such conditions. In such areas, the compound weir is needed for this purpose . The necessity of having accurate information on the performance characteristics of compound weirs has focused attention to study its behaviour under free overfall conditions. A theory is outlined which helps to explain the flow over compound weirs, whose application is shown to be reasonably justified in the present context. Experiments on twelve weirs of three sets are shown to confirm the trends predicted by the theory. A discharge equation of the form Q = K.Hn is formulated, where Q is discharge, K is dimensional constant of proportionality, H is measured head, and n is hydraulic exponent . Such a definitive and unique relationship offers a practical basis for the measurement of discharge in open channels. An accurate method for determining the discharge coefficients is presented and the coefficients are determined for each of the compound weirs. The limits of validity of the results are investigated. The summary of the results is presented in graphic and tabular forms. Finally, sensitivity analysis, by varying the discharge coefficients has been carried out to help identifying the potential importance of these parameters. A comparison of the theoretically determined solution with observations indicates a fair agreement, and allows a simple prediction of all pertinent flow characteristics. |
| 650 #0 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name entry element | Weirs |
| 700 1# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Wang, Tsan-Wen, |
| Relator term | Chairperson |
| 700 0# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Prida Thimakorn, |
| Relator term | Co-Chairperson |
| 700 1# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Bogardi, Janos J., |
| Relator term | Examination Committee |
| 700 0# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Preecha Kamronrithisorn, |
| Relator term | Examination Committee |
| 710 2# - ADDED ENTRY--CORPORATE NAME | |
| Corporate name or jurisdiction name as entry element | The Government of France, |
| Relator term | Scholarship Donor |
| 810 2# - SERIES ADDED ENTRY--CORPORATE NAME | |
| Corporate name or jurisdiction name as entry element | Asian Institute of Technology. |
| Title of a work | Thesis ; |
| Volume/sequential designation | no. WA-87-1 |
| 856 ## - ELECTRONIC LOCATION AND ACCESS | |
| Materials specified | Full-Text |
| Uniform Resource Identifier | <a href="http://203.159.5.9/ait-thesis/detail.php?q=B19395">http://203.159.5.9/ait-thesis/detail.php?q=B19395</a> |
| 907 ## - LOCAL DATA ELEMENT G, LDG (RLIN) | |
| a | .b10649979 |
| b | mnait |
| c | s |
| 902 ## - LOCAL DATA ELEMENT B, LDB (RLIN) | |
| a | 240401 |
| 998 ## - LOCAL CONTROL INFORMATION (RLIN) | |
| Operator's initials, OID (RLIN) | 2 |
| Cataloger's initials, CIN (RLIN) | 951012 |
| First date, FD (RLIN) | m |
| -- | a |
| -- | s |
| -- | 2 |
| 945 ## - LOCAL PROCESSING INFORMATION (OCLC) | |
| l | mnait |
| 945 ## - LOCAL PROCESSING INFORMATION (OCLC) | |
| l | mnarc |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
| Koha item type | 22-AIT Thesis (Replacement) |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
| Koha item type | 40-Archives |
| 909 ## - LOCAL ITEMS USED | |
| Barcode | Barcode : 30050120573604 |
| CREATED | CREATED : 2014-01-04 |
| RECORD Id | RECORD # : i12785106 |
| LPATRON | LPATRON : 0 |
| LCHKIN | LCHKIN : - |
| RENEWALS | # RENEWALS : 0 |
| -- | # OVERDUE : 0 |
| -- | IUSE3 : 0 |
| -- | TOT CHKOUT : 0 |
| -- | TOT RENEW : 0 |
| 909 ## - LOCAL ITEMS USED | |
| Barcode | Barcode : 30050160034814 |
| CREATED | CREATED : 2016-09-02 |
| RECORD Id | RECORD # : i12879277 |
| LPATRON | LPATRON : 0 |
| LCHKIN | LCHKIN : - |
| RENEWALS | # RENEWALS : 0 |
| -- | # OVERDUE : 0 |
| -- | IUSE3 : 0 |
| -- | TOT CHKOUT : 0 |
| -- | TOT RENEW : 0 |
| Withdrawn status | Lost status | Damaged status | Not for loan | Home library | Current library | Shelving location | Date acquired | Cost, normal purchase price | Total checkouts | Full call number | Barcode | Date last seen | Copy number | Price effective from | Koha item type |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Available for Loans | Asian Institute of Technology Library | Asian Institute of Technology Library | AIT Publications | 18/08/2026 | 50.00 | AIT Thesis no.WA-87-1 | 30050120573604 | 18/08/2026 | 3 | 18/08/2026 | 22-AIT Thesis (Replacement) | ||||
| Available for Loans | Asian Institute of Technology Library | Asian Institute of Technology Library | Archives | 18/08/2026 | AIT Thesis no.WA-87-1 | 30050160034814 | 18/08/2026 | 18/08/2026 | 40-Archives |