AI SearchAeration in a spillway shaft (Record no. 2635)
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| 000 -LEADER | |
|---|---|
| fixed length control field | 02924nam a2200385 4500 |
| 005 - DATE AND TIME OF LATEST TRANSACTION | |
| control field | 20260817161757.0 |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION | |
| fixed length control field | 150598 th eng |
| 035 ## - SYSTEM CONTROL NUMBER | |
| System control number | .b10057870 |
| 099 #9 - LOCAL FREE-TEXT CALL NUMBER (OCLC) | |
| Classification number | AIT Thesis no.WA-82-20 |
| 100 1# - MAIN ENTRY--PERSONAL NAME | |
| Personal name | Shrestha, Ganesh Bahadur |
| 245 10 - TITLE STATEMENT | |
| Title | Aeration in a spillway shaft |
| 260 ## - PUBLICATION, DISTRIBUTION, ETC. | |
| Place of publication, distribution, etc. | Bangkok : |
| Name of publisher, distributor, etc. | Asian Institute of Technology, |
| Date of publication, distribution, etc. | 1982 |
| 300 ## - PHYSICAL DESCRIPTION | |
| Extent | x, 85 p. |
| 490 1# - SERIES STATEMENT | |
| Series statement | Thesis ; |
| Volume/sequential designation | no. WA-82-20 |
| 500 ## - GENERAL NOTE | |
| General note | A thesis submitted in partial fulfilment 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, 1982 |
| 520 ## - SUMMARY, ETC. | |
| Summary, etc. | Surface irregularities in the spillway shaft of high head, steep gradient and high flow velocity causes a serious cavitation damage. In order to prevent cavity erosion a numbers of methods were used and tested. Recently, it was found that erosion can be reduced effectively by the air-entrainment into the flow through the aeration grooves. An experimental study on the phenomena of aeration groove was carried out in the Hydraulic Model of Nam Chon Dam spillway. The Nam Chon Power Station is the major part of the Upper Quai Yai Hydroelectric Development Project. The scale of the model was derived from Froude Similarity Law. The conceptual model of air-water flow is developed according to the shear stress theory at the air-water interface. The experimental result gives acceptable agreement with the model. The results of pressure distribution along the bottom of the tunnel and air-entrainment through the aeration grooves indicate the necessity of all the grooves along the inclined shaft. Due to the negative pressure heads detected in some of the grooves, modifications in the design of the groove shape is required. The original spacing of the aeration grooves as given in prototype is found to be effective from the results of air concentration. |
| 650 #0 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name entry element | Spillways |
| 700 0# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Prida Thimakorn, |
| Relator term | Chairperson |
| 700 1# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Christoph, Ing. Fried, |
| Relator term | Examination Committee |
| 700 0# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Apichart Anukularmphai, |
| Relator term | Examination Committee |
| 710 2# - ADDED ENTRY--CORPORATE NAME | |
| Corporate name or jurisdiction name as entry element | Government of the Federal Republic of Germany (DAAD), |
| 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-82-20 |
| 856 ## - ELECTRONIC LOCATION AND ACCESS | |
| Materials specified | Full-Text |
| Uniform Resource Identifier | <a href="http://203.159.5.9/ait-thesis/detail.php?q=B21394">http://203.159.5.9/ait-thesis/detail.php?q=B21394</a> |
| 907 ## - LOCAL DATA ELEMENT G, LDG (RLIN) | |
| a | .b10057870 |
| b | mnait |
| c | s |
| 902 ## - LOCAL DATA ELEMENT B, LDB (RLIN) | |
| a | 241003 |
| 998 ## - LOCAL CONTROL INFORMATION (RLIN) | |
| Operator's initials, OID (RLIN) | 2 |
| Cataloger's initials, CIN (RLIN) | 951012 |
| First date, FD (RLIN) | m |
| -- | a |
| -- | s |
| -- | 0 |
| 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 : 30050120572234 |
| CREATED | CREATED : 2014-04-29 |
| RECORD Id | RECORD # : i1279384x |
| LPATRON | LPATRON : 0 |
| LCHKIN | LCHKIN : - |
| RENEWALS | # RENEWALS : 0 |
| -- | # OVERDUE : 0 |
| -- | IUSE3 : 0 |
| -- | TOT CHKOUT : 0 |
| -- | TOT RENEW : 0 |
| 909 ## - LOCAL ITEMS USED | |
| Barcode | Barcode : 30050160036215 |
| CREATED | CREATED : 2016-02-02 |
| RECORD Id | RECORD # : i12876811 |
| 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 | 17/08/2026 | 50.00 | AIT Thesis no.WA-82-20 | 30050120572234 | 17/08/2026 | 3 | 17/08/2026 | 22-AIT Thesis (Replacement) | ||||
| Available for Loans | Asian Institute of Technology Library | Asian Institute of Technology Library | Archives | 17/08/2026 | AIT Thesis no.WA-82-20 | 30050160036215 | 17/08/2026 | 17/08/2026 | 40-Archives |