Three dimensional numerical modeling of confined and unconfined turbidity currents / (Record no. 62463)
[ view plain ]
| 000 -LEADER | |
|---|---|
| fixed length control field | 03451cam a2200349 a 4500 |
| 003 - CONTROL NUMBER IDENTIFIER | |
| control field | EG-GiCUC |
| 005 - DATE AND TIME OF LATEST TRANSACTION | |
| control field | 20250223031811.0 |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION | |
| fixed length control field | 170923s2017 ua dh f m 000 0 eng d |
| 040 ## - CATALOGING SOURCE | |
| Original cataloging agency | EG-GiCUC |
| Language of cataloging | eng |
| Transcribing agency | EG-GiCUC |
| 041 0# - LANGUAGE CODE | |
| Language code of text/sound track or separate title | eng |
| 049 ## - LOCAL HOLDINGS (OCLC) | |
| Holding library | Deposite |
| 097 ## - Thesis Degree | |
| Thesis Level | M.Sc |
| 099 ## - LOCAL FREE-TEXT CALL NUMBER (OCLC) | |
| Classification number | Cai01.13.05.M.Sc.2017.Se.T |
| 100 0# - MAIN ENTRY--PERSONAL NAME | |
| Personal name | Serine Ahmed Bashandy |
| 245 10 - TITLE STATEMENT | |
| Title | Three dimensional numerical modeling of confined and unconfined turbidity currents / |
| Statement of responsibility, etc. | Serine Ahmed Bashandy ; Supervised Mohamed Sh. Elmanadely , Tarek Mohamed Salah Eldin , Amr Z. Hamouda |
| 246 15 - VARYING FORM OF TITLE | |
| Title proper/short title | النمذجة الرقمية ثلاثية الأبعاد لتيارات الكثافة تحت السطحية المحدودة وغير المحدودة |
| 260 ## - PUBLICATION, DISTRIBUTION, ETC. | |
| Place of publication, distribution, etc. | Cairo : |
| Name of publisher, distributor, etc. | Serine Ahmed Bashandy , |
| Date of publication, distribution, etc. | 2017 |
| 300 ## - PHYSICAL DESCRIPTION | |
| Extent | 119 P. : |
| Other physical details | charts , facsimiles ; |
| Dimensions | 30cm |
| 502 ## - DISSERTATION NOTE | |
| Dissertation note | Thesis (M.Sc.) - Cairo University - Faculty of Engineering - Department of Civil Engineering |
| 520 ## - SUMMARY, ETC. | |
| Summary, etc. | Turbidity currents are sediment{u2013}laden gravity currents that exchange sediment with bed by erosion and deposition, as flow travels downstream. They constitute a major mechanism for the transport of sediment into sea and lakes floor. A 3D multiphase numerical model that simulates the dynamics and flow structure of turbidity currents is utilized. The governing equations are solved by Computational Fluid Dynamics code (FLUENT). Analysis of the spatial and temporal variations in turbidity current dynamics is made for confined decelerating depositional surge current and unconfined continuous current. Results revealed that in general turbidity currents consist of two distinct layers, an upper dilute layer and a lower dense layer near bed, and also have distinctive head and body. In case of surge like, confined turbidity current, fixed release of sediment mixture generates a turbidity current with initial constant flow front velocity (slumping phase) and then decelerates regardless of the initial flow sediment diameter. When comparing different initial grain size proportions indicates that grain size plays a dominant role in propagation and sedimentation of particle laden gravity currents. In case of continuous unconfined turbidity current model results indicated that all turbidity currents are supercritical through the inclined channel then changes into subcritical at the end of basin regardless of initial sediment concentration. Investigating the impact of various flow controlling parameters (bed slope, bed roughness, initial suspended sediment concentration, inflow velocity and suspended sediment diameter) in the hydrodynamic of turbidity currents and the extension fan deposited, showed that these parameters affect the flow dynamics with different degree. The model is up scaled using various scale factors, the results of this study indicated that the numerical model is capable of predicting velocity values for large scale prototype, where as values for near bed suspended sediment concentration will be overestimated. |
| 530 ## - ADDITIONAL PHYSICAL FORM AVAILABLE NOTE | |
| Additional physical form available note | Issued also as CD |
| 653 #4 - INDEX TERM--UNCONTROLLED | |
| Uncontrolled term | Multiphase flow |
| 653 #4 - INDEX TERM--UNCONTROLLED | |
| Uncontrolled term | Submarine fans |
| 653 #4 - INDEX TERM--UNCONTROLLED | |
| Uncontrolled term | Turbidity current |
| 700 0# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Amr Z. Hamouda, |
| Relator term | |
| 700 0# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Mohamed Sh. Elmanadely , |
| Relator term | |
| 700 0# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Tarek Mohamed Salah Eldin , |
| Relator term | |
| 856 ## - ELECTRONIC LOCATION AND ACCESS | |
| Uniform Resource Identifier | <a href="http://172.23.153.220/th.pdf">http://172.23.153.220/th.pdf</a> |
| 905 ## - LOCAL DATA ELEMENT E, LDE (RLIN) | |
| Cataloger | Nazla |
| Reviser | Revisor |
| 905 ## - LOCAL DATA ELEMENT E, LDE (RLIN) | |
| Cataloger | Shimaa |
| Reviser | Cataloger |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
| Source of classification or shelving scheme | Dewey Decimal Classification |
| Koha item type | Thesis |
| Source of classification or shelving scheme | Not for loan | Home library | Current library | Date acquired | Full call number | Barcode | Date last seen | Koha item type | Copy number |
|---|---|---|---|---|---|---|---|---|---|
| Dewey Decimal Classification | المكتبة المركزبة الجديدة - جامعة القاهرة | قاعة الرسائل الجامعية - الدور الاول | 11.02.2024 | Cai01.13.05.M.Sc.2017.Se.T | 01010110072799000 | 22.09.2023 | Thesis | ||
| Dewey Decimal Classification | المكتبة المركزبة الجديدة - جامعة القاهرة | مخـــزن الرســائل الجـــامعية - البدروم | 11.02.2024 | Cai01.13.05.M.Sc.2017.Se.T | 01020110072799000 | 22.09.2023 | CD - Rom | 72799.CD |