AI SearchCalculation of energy dissipation due to an abrupt bed drop in an open channel (Record no. 14649)
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| 005 - DATE AND TIME OF LATEST TRANSACTION | |
| control field | 20260817172048.0 |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION | |
| fixed length control field | 160698 th eng |
| 035 ## - SYSTEM CONTROL NUMBER | |
| System control number | .b11509879 |
| 099 #9 - LOCAL FREE-TEXT CALL NUMBER (OCLC) | |
| Classification number | AIT Thesis no. WA-92-8 |
| 100 0# - MAIN ENTRY--PERSONAL NAME | |
| Personal name | Gao Jiacai |
| 245 10 - TITLE STATEMENT | |
| Title | Calculation of energy dissipation due to an abrupt bed drop in an open channel |
| 260 ## - PUBLICATION, DISTRIBUTION, ETC. | |
| Place of publication, distribution, etc. | Bangkok : |
| Name of publisher, distributor, etc. | Asian Institute of Technology, |
| Date of publication, distribution, etc. | 1992 |
| 300 ## - PHYSICAL DESCRIPTION | |
| Extent | 118 leaves |
| 490 1# - SERIES STATEMENT | |
| Series statement | Thesis ; |
| Volume/sequential designation | no. WA-92-8 |
| 500 ## - GENERAL NOTE | |
| General note | A thesis 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, 1992 |
| 520 ## - SUMMARY, ETC. | |
| Summary, etc. | Flow energy dissipation due to an abrupt bed drop was previously studied extensively on a macroscopic scale, either by a one-dimensional (1-D) analysis or by experimental measurement. The macroscopic aspect of the flow phenomena and energy dissipation is well understood while the microscopic aspect has not been revealed clearly. A two-dimensional (2-D) hydrodynamic model in the vertical plane with the standard k - e turbulence model closure (VEST model) is used to compute the temporal mean flow parameters and turbulence characteristics of the flow through an abrupt bed drop in a microscopic scale. The numerical results are compared with the available experimental measurements. It is found that the model can predict the velocities accurately and can predict the turbulence characteristics reasonably well. The spatial distribution of the flow energy dissipation is computed along the longitudinal distance and a good agreement between the computed results and the previous experimental data is obtained. The effects of the inlet Froude number, the relative step height and the downstream end water level on the energy dissipation are examined. The computed energy dissipation is compared with those obtained by the classical 1-D analysis. The deviations of 1-D results from the 2-D model results are quantitatively evaluated. Sensitivity analysis are performed to investigate the effects of the k - e model constants, the upstream boundary conditions of the inlet velocity and the k and e turbulence characteristics, and the effects of the water surface boundary condition on the computed flow conditions and on the flow energy dissipation. |
| 650 10 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name entry element | Hydrodynamics |
| General subdivision | Mathematical models |
| 700 0# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Tawatchai Tingsanchali, |
| Relator term | Chairperson |
| 700 0# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Suphat Vongvisessomjai, |
| Relator term | Examination Committee |
| 700 1# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Tanaka, Hitoshi, |
| Relator term | Examination Committee |
| 700 1# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Tran Thuc, |
| Relator term | Examination Committee |
| 710 2# - ADDED ENTRY--CORPORATE NAME | |
| Corporate name or jurisdiction name as entry element | Government of Denmark, |
| 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-92-8 |
| 856 ## - ELECTRONIC LOCATION AND ACCESS | |
| Materials specified | Full-Text |
| Uniform Resource Identifier | <a href="http://203.159.5.9/ait-thesis/detail.php?q=B17255">http://203.159.5.9/ait-thesis/detail.php?q=B17255</a> |
| 907 ## - LOCAL DATA ELEMENT G, LDG (RLIN) | |
| a | .b11509879 |
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| c | s |
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| a | 240612 |
| 998 ## - LOCAL CONTROL INFORMATION (RLIN) | |
| Operator's initials, OID (RLIN) | 0 |
| Cataloger's initials, CIN (RLIN) | 960620 |
| First date, FD (RLIN) | m |
| -- | a |
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| 945 ## - LOCAL PROCESSING INFORMATION (OCLC) | |
| l | mnait |
| 945 ## - LOCAL PROCESSING INFORMATION (OCLC) | |
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| 945 ## - LOCAL PROCESSING INFORMATION (OCLC) | |
| l | mnarc |
| 945 ## - LOCAL PROCESSING INFORMATION (OCLC) | |
| l | mnarc |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
| Koha item type | 20-AIT Publication |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
| Koha item type | 40-Archives |
| 909 ## - LOCAL ITEMS USED | |
| Barcode | Barcode : 30050003055133 |
| CREATED | CREATED : 1995-01-21 |
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| CREATED | CREATED : 2016-02-15 |
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| CREATED | CREATED : 2023-11-10 |
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| Withdrawn status | Lost status | Damaged status | Not for loan | Home library | Current library | Shelving location | Date acquired | 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 | AIT Thesis no. WA-92-8 | 30050003055133 | 17/08/2026 | 1 | 17/08/2026 | 20-AIT Publication | ||||
| Available for Loans | Asian Institute of Technology Library | Asian Institute of Technology Library | AIT Publications | 17/08/2026 | AIT Thesis no. WA-92-8 | 30050003055125 | 17/08/2026 | 2 | 17/08/2026 | 20-AIT Publication | ||||
| Available for Loans | Asian Institute of Technology Library | Asian Institute of Technology Library | Archives | 17/08/2026 | AIT Thesis no. WA-92-8 | 30050160033287 | 17/08/2026 | 17/08/2026 | 40-Archives | |||||
| Available for Loans | Asian Institute of Technology Library | Asian Institute of Technology Library | Archives | 17/08/2026 | AIT Thesis no. WA-92-8 | 30050121099740 | 17/08/2026 | 3 | 17/08/2026 | 20-AIT Publication |