Showing 3 results for Rezaee mazyak
Rouhollah Amirabadi, Ahmad Rezaee Mazyak, Ali Ghasemi,
Volume 14, Issue 27 (7-2018)
Abstract
Caisson breakwater is one the most common coastal protection structures which their main application is to reduce wave energies and create a calm basin for berthing of the ships in ports. A simple approach to achieve this is to build a solid wall against the waves which are know as caisson breakwater. In this paper interaction of irregular waves with normal and perforated-wall caisson breakwater using FLOW-3D is studied. In this paper, the appropriate numerical model has been selected and then the model setup is explained. After the model setup, sensitivity analysis, calibration and verification of the model results with available laboratory data are presented. When the model performance is verified, the interaction of irregular wave with the perforated-wall caisson breakwaters is evaluated. The modeling results show that the perforated caisson breakwater compared to the vertical breakwater has a better hydraulic performance. In comparison to perforated-wall caisson breakwater results and euro top 2016 results, define a new dimensionless number to consider width of chamber to be recommended.
Seyed Morteza Marashian, Mehdi Adjami, Ahmad Rezaee Mazyak,
Volume 15, Issue 29 (4-2019)
Abstract
Breakwaters have changed a lot during their design history. Overtopping is an important parameter that its evaluation and reduction has always been noticed. In this study, the wave overtopping of composite berm breakwater as a new conceptual structure has been investigated numerical modeling was performed using FLOW-3D software. Then, based on a laboratory model conducted by Losada et al, calibration and verification was done for our numerical model. After numerical model performance confidence, composite berm breakwater was designed in three types. The wave overtopping of the composite berm breakwater was analysed and compared with rubble mound and horizontally caisson breakwaters. The results show a decrease of 84.01% of the overtopping in the composit berm breakwater compared to the rubble mound breakwater. Also, the overtopping in the composite berm breakwater had a 61.42% reduction compared to the horizontal caisson breakwater.
Ahmad Rezaee Mazyak, Aghil Hajmomeni,
Volume 17, Issue 34 (12-2021)
Abstract
Tropical cyclone storm surge is one of the key parameters in the design of coastal structures and shoreline management plans. Therefore, the storm surge of the Nanauk and Ashooba tropical cyclone has been investigated on the Makran coasts. In this study, in addition to the analysis of the global sea level monitoring station data, the effects of boundary conditions and wind field accuracy of reanalysis, parametric and WRF model data have been investigated in storm surge modeling. Analysis of water level observations shows that the maximum storm surge (0.38 and 0.36 m) occurred after the tropical cyclone landfall. Furthermore, the secondary effects of tropical cyclones cause the movement of the water body and storm surge for several days. Considering the Sea Surface Anomaly (SSA) as the open boundary condition has led to improved numerical model results. The storm surge results of the ERA5 and WRF wind field have appropriate accuracy in Makran coasts. The maximum value of storm surge obtained based on ERA5 wind field at Chabahar station in Nanauk and Ashooba tropical cyclone is 0.25 and 0.34 m, respectively.
