AI SearchLocal scour around a cylinder due to waves and currents (Record no. 70351)
[ view plain ]
| 000 -LEADER | |
|---|---|
| fixed length control field | 03884nam a2200421 4500 |
| 005 - DATE AND TIME OF LATEST TRANSACTION | |
| control field | 20260818153644.0 |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION | |
| fixed length control field | 150698 th eng |
| 035 ## - SYSTEM CONTROL NUMBER | |
| System control number | .b10406827 |
| 099 #9 - LOCAL FREE-TEXT CALL NUMBER (OCLC) | |
| Classification number | AIT Thesis no. WA-91-24 |
| 100 1# - MAIN ENTRY--PERSONAL NAME | |
| Personal name | Win, Aung |
| 245 10 - TITLE STATEMENT | |
| Title | Local scour around a cylinder due to waves and currents |
| 260 ## - PUBLICATION, DISTRIBUTION, ETC. | |
| Place of publication, distribution, etc. | Bangkok : |
| Name of publisher, distributor, etc. | Asian Institute of Technology, |
| Date of publication, distribution, etc. | 1991 |
| 300 ## - PHYSICAL DESCRIPTION | |
| Extent | 113 p. |
| 490 1# - SERIES STATEMENT | |
| Series statement | Thesis ; |
| Volume/sequential designation | no. WA-91-24 |
| 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, 1991 |
| 520 ## - SUMMARY, ETC. | |
| Summary, etc. | A new model is proposed for three-dimensional local scour on the basis of wave and current calculation around cylinder. The model consists of three submodels for calculating 1) wave field, 2) wave induced currents, and 3) sand transport and local topography change. Vortex formation and its effect to local scour is also included in the model. The initial bottom topography, geometry of the structure and incident wave condition are given as initial condition. Then the wave field around the structure is computed by using the linear diffraction theory. Computation of the wave induced currents follows that of the wave field. The mass transport velocity is calculated analytically by use of computed wave field. The steady current, induced by gradient of radiation stress, is determined through numerical calculation using depth integrated conservation equations of mass and momentum for the fluid motion. The wave and current fields thus computed are utilized in the submodel of sand transport and local topography change. The distribution of sand transport rates produce by wave and current are estimated and then the change of local bottom elevations are computed by solving the equation of sand mass conservation. The computed topography around the structure is compared with the measured topography of laboratory experiment, which was done by Saito et al. (1990). The comparison shows that some discrepancies exist especially in front of the structure and about at 130 degree from wave-current direction close to the cylinder. In order to improve model estimation, a vortex model is developed, since vortex formation is expected under the effect of steady flow induced by wave height distribution. After introducing the correction factor, the model gives a reasonable result. The result of the vortex model is superimposed with the main model. The superimposed result of the bottom topography is in good agreement with experimental results. |
| 650 #0 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name entry element | Waves |
| General subdivision | Mathematical models |
| 650 #0 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name entry element | Scour (Hydraulic engineering) |
| 700 1# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Shibayama, Tomoya, |
| Relator term | Chairperson |
| 700 0# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Suphat Vongvisessomjai, |
| Relator term | Examination Committee |
| 700 0# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Tawatchai Tingsanchali, |
| 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-91-24 |
| 856 ## - ELECTRONIC LOCATION AND ACCESS | |
| Materials specified | Full-Text |
| Uniform Resource Identifier | <a href="http://203.159.5.9/ait-thesis/detail.php?q=B17768">http://203.159.5.9/ait-thesis/detail.php?q=B17768</a> |
| 907 ## - LOCAL DATA ELEMENT G, LDG (RLIN) | |
| a | .b10406827 |
| b | mnait |
| c | s |
| 902 ## - LOCAL DATA ELEMENT B, LDB (RLIN) | |
| a | 240329 |
| 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 | mnait |
| 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 : 30050003054946 |
| CREATED | CREATED : 1994-05-17 |
| RECORD Id | RECORD # : i10508132 |
| LPATRON | LPATRON : 0 |
| LCHKIN | LCHKIN : - |
| RENEWALS | # RENEWALS : 0 |
| -- | # OVERDUE : 0 |
| -- | IUSE3 : 0 |
| -- | TOT CHKOUT : 0 |
| -- | TOT RENEW : 0 |
| 909 ## - LOCAL ITEMS USED | |
| Barcode | Barcode : 30050003054953 |
| CREATED | CREATED : 1994-05-17 |
| RECORD Id | RECORD # : i10508144 |
| LPATRON | LPATRON : 0 |
| LCHKIN | LCHKIN : - |
| RENEWALS | # RENEWALS : 0 |
| -- | # OVERDUE : 0 |
| -- | IUSE3 : 0 |
| -- | TOT CHKOUT : 0 |
| -- | TOT RENEW : 0 |
| 909 ## - LOCAL ITEMS USED | |
| Barcode | Barcode : 30050160033386 |
| CREATED | CREATED : 2016-02-15 |
| RECORD Id | RECORD # : i12882239 |
| 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 | 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 | AIT Thesis no. WA-91-24 | 30050003054946 | 18/08/2026 | 1 | 18/08/2026 | 20-AIT Publication | ||||
| Available for Loans | Asian Institute of Technology Library | Asian Institute of Technology Library | AIT Publications | 18/08/2026 | AIT Thesis no. WA-91-24 | 30050003054953 | 18/08/2026 | 2 | 18/08/2026 | 20-AIT Publication | ||||
| Available for Loans | Asian Institute of Technology Library | Asian Institute of Technology Library | Archives | 18/08/2026 | AIT Thesis no. WA-91-24 | 30050160033386 | 18/08/2026 | 18/08/2026 | 40-Archives |