scholarly journals Hydrodynamic analysis and improvement of pontoon boats

2019 ◽  
Vol XXII (1) ◽  
pp. 220-230
Author(s):  
Gürsel K. T.
Keyword(s):  
Fluid Dynamics ◽  
Computational Fluid Dynamics ◽  
Market Share ◽  
Total Pressure ◽  
Hydrodynamic Resistance ◽  
Maximum Speed ◽  
Objective Functions ◽  
Design Features ◽  
Hydrodynamic Properties ◽  
Hydrodynamic Analysis

This study is related to the design features of pontoon boats that enjoy an increasing market share in global recreational boat industry. In this investigation, a representative pontoon boat with three cylindrical buoyancy elements was taken as the model to be studied. Afterwards, the buoyancy elements were improved to optimize hydrodynamic properties using a computational fluid dynamics package. The objective functions were the total hydrodynamic resistance of the boat and the distribution of the turbulence viscosity and total pressure on the hulls. By means of the obtained results, the powering requirements were estimated both for a service speed and for a maximum speed as well as findings were discussed.

scholarly journals CFD Investigation of Trout-Like Configuration Holding Station near an Obstruction

Fluids ◽  
2021 ◽  
Vol 6 (6) ◽  
pp. 204
Author(s):  
Kamran Fouladi ◽  
David J. Coughlin
Keyword(s):  
Fluid Dynamics ◽  
Computational Fluid Dynamics ◽  
Laboratory Experiment ◽  
Numerical Models ◽  
Interaction Model ◽  
Underwater Vehicle ◽  
Water Stream ◽  
Hydrodynamic Analysis ◽  
Structure Interaction ◽  
Vehicle Systems

This report presents the development of a fluid-structure interaction model using commercial Computational fluid dynamics software and in-house developed User Defined Function to simulate the motion of a trout Department of Mechanical Engineering, Widener University holding station in a moving water stream. The oscillation model used in this study is based on the observations of trout swimming in a respirometry tank in a laboratory experiment. The numerical simulations showed results that are consistent with laboratory observations of a trout holding station in the tank without obstruction and trout entrained to the side of the cylindrical obstruction. This paper will be helpful in the development of numerical models for the hydrodynamic analysis of bioinspired unmanned underwater vehicle systems.

Hydrodynamic Analysis of Macroalgae Local Model Using Computational Fluid Dynamics

2021 ◽  
Author(s):  
Ming Chen ◽  
Solomon Yim ◽  
Daniel Cox ◽  
Zhaoqing Yang ◽  
Thomas Mumford
Keyword(s):  
Fluid Dynamics ◽  
Computational Fluid Dynamics ◽  
Local Model ◽  
Hydrodynamic Analysis

scholarly journals Computational fluid dynamics simulation as a tool for optimizing the hydrodynamic performance of membrane bioreactors

RSC Advances ◽  
2019 ◽  
Vol 9 (55) ◽  
pp. 32034-32046 ◽  
Author(s):  
Yan Jin ◽  
Cheng-Lin Liu ◽  
Xing-Fu Song ◽  
Jian-Guo Yu
Keyword(s):  
Fluid Dynamics ◽  
Computational Fluid Dynamics ◽  
Membrane Fouling ◽  
Membrane Bioreactor ◽  
Membrane Bioreactors ◽  
Dynamics Simulation ◽  
Hydrodynamic Performance ◽  
Shear Stresses ◽  
Computational Fluid Dynamics Simulation ◽  
Hydrodynamic Properties

The hydrodynamic properties and shear stresses experienced by a membrane bioreactor (MBR) are directly related to its rate of membrane fouling.

Air Flow Simulation in High-Pressure Fan with Splitter Blade

2013 ◽  
Vol 805-806 ◽  
pp. 1730-1735
Author(s):  
Xiao Lin Wang ◽  
Ding Hua Yang ◽  
Gen Sheng Yang ◽  
Zhong Li ◽  
Jian Feng Li ◽  
...  
Keyword(s):  
Fluid Dynamics ◽  
Computational Fluid Dynamics ◽  
High Pressure ◽  
Total Pressure ◽  
Unstructured Grids ◽  
Three Dimensional ◽  
Flow Simulation ◽  
Turbulent Model ◽  
Centrifugal Blower ◽  
The Mean

In the process of fans design, splitter blades could be adopted in the middle of rotator to improve the performance of fan. In order to understand the flow pattern in the high-pressure centrifugal blower of 9-26type with splitter blade thoroughly, computational fluid dynamics Fluent is applied and the three dimensional air flows in the fan is numerically simulated and analyzed. The calculating results showed that under the same condition, the flux of the fan was improved 5%approximately and the mean total pressure at outlet of the fan was improved 10% because of the splitter blade, the length of the splitter blade affected the flux either. Standard turbulent model and unstructured grids are applied in computation. The results of calculation can good helpful for people to improve the performance of the fan.

scholarly journals Banki-Michell Optimal Design by Computational Fluid Dynamics Testing and Hydrodynamic Analysis

Energies ◽  
2013 ◽  
Vol 6 (5) ◽  
pp. 2362-2385 ◽  
Author(s):  
Vincenzo Sammartano ◽  
Costanza Aricò ◽  
Armando Carravetta ◽  
Oreste Fecarotta ◽  
Tullio Tucciarelli
Keyword(s):  
Fluid Dynamics ◽  
Computational Fluid Dynamics ◽  
Optimal Design ◽  
Hydrodynamic Analysis

Computational Fluid Dynamics Hydrodynamic Analysis of a Cross-Orthogonal Fixed-Valve Tray

2014 ◽  
Vol 37 (3) ◽  
pp. 383-391 ◽  
Author(s):  
Jinsheng Sun ◽  
Xubo Luo ◽  
Shuo Jiang ◽  
Wenping Wang ◽  
Hao Lyu ◽  
...  
Keyword(s):  
Fluid Dynamics ◽  
Computational Fluid Dynamics ◽  
Valve Tray ◽  
Hydrodynamic Analysis

Some aspects of the flow in S-shaped diffusing ducts

1994 ◽  
Vol 98 (978) ◽  
pp. 305-310 ◽  
Author(s):  
S. C. M. Yu ◽  
E. L. Goldsmith
Keyword(s):  
Fluid Dynamics ◽  
Experimental Data ◽  
Computational Fluid Dynamics ◽  
Axial Length ◽  
Total Pressure ◽  
Static Pressure ◽  
Flow Distortion ◽  
Cross Sectional ◽  
Group 13 ◽  
Duct Geometry

The circular cross-sectional Royal Aerospace Establishment (RAE) 2129 S-shaped intake diffusing duct series, shown in Fig. 1, which has an offset of the inlet and exit centerline of 0·3 and 0·45 of the axial length of the duct, was designed at the RAE (Bedford) and tested at British Aerospace Filton, at low forward speeds (freestream Mach no. range from 0 – 0·2 but a range of duct inlet Mach numbers up to choking speeds) in the last two decades to fulfil the objectives of collecting systematic experimental data on engine face pressure recovery, total pressure flow distortion and wall static pressures for computational fluid dynamics validation. Some of the measurements have been presented, as for example, by Willmer, Brown & Goldsmith. The measurements from one version of Model 2129 (the 0·3 length offset S-duct geometry) have been used to compare with calculated results from a number of CFD programs, as for example, by Anderson, Horton and by the AGARD Working Group 13. The series of comparison also highlight the need for measurements other than the engine face total pressure and wall static pressure which have already been made.

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