PL
 |
EN
Preferencje help
Polish version English version Język
Widoczny [Schowaj] Abstrakt
Liczba wyników

Znaleziono wyników: 5

Liczba wyników na stronie
first rewind previous Strona / 1 next fast forward last
Wyniki wyszukiwania
help Sortuj według:

help Ogranicz wyniki do:
first rewind previous Strona / 1 next fast forward last
1
Content available Grid type impact on the results of the volume of fluid method in the free surface flow calculations around ship hull
Sugalski K., Skrúcaný T.
New Trends in Production Engineering
|
2018
|
Vol. 1, Iss. 1
151--157
EN
This article presents results of the free surface flow around ship hull on two different types of computational grid. Each type of mentioned grid has its own advantages and disadvantages in particular cases, mostly in one phase simulation. Omitting cases with capitation, there is no free surface involved in one phase simulation. Multiphase simulations are crucial in the ship design process and optimization. Recreating free surface on the triangular mesh causes difficulties, in contrast to the hexahedral meshes, where calculated surface is more aligned to the physical border of the fluids. In this paper, results from the triangular mesh were compared to results from hexahedral mesh. Conclusions about triangular meshes in two phase simulation are presented. The computational fluid dynamic toolbox OpenFOAM is used to perform calculations of the total resistance of work boat in calm water.
2
Content available Energy saving procedures for fishing vessels by means of numerical optimization of hull resistance
Abramowski T., Sugalski K.
Zeszyty Naukowe Akademii Morskiej w Szczecinie
|
2017
|
nr 49 (121)
19--27
EN
This paper presents the general method for hull shape optimization of fishing boats with the objective of reducing resistance. In particular, it presents an example of the results of the application of resistance-reducing devices such as the ducktail, the cylindrical bulb and the streamlined bulbous bow. The resistance was determined using computational fluid dynamics (CFD). For the purpose of flow simulation, the OpenFoam system, distributed under an open source license, was used. The turbulent, unsteady flow with free surface liquid around the analyzed hulls was computed and investigated for potential resistance reduction. Ultimately, the calculation results were generalized by the parameterization of dimensionless geometric variables for the shape of a bulbous bow and were given in a form suitable for practical application in the hull design process.
3
Content available Fishing vessel hull design and towing resistance calculation by the CFD methods
Sugalski K.
Zeszyty Naukowe / Akademia Morska w Szczecinie
|
2014
|
nr 40 (112)
27--30
EN
Hull resistance and propulsion calculations are the basis of every ship design. In this paper, application of the computational fluid dynamics are presented together with the results of towing resistance of the model of stern trawler. The practical use of CFD in the preliminary vessels' design process were presented at the stern trawler vessel type.All calculations had been performed in the free CFD software called OpenFOAM. This is set of C++ programming language libraries, designed to solve Navier-Stokes equations.
4
Content available Design of the natural ventilation system for the fishing vessel by the CFD methods
Sugalski K.
Zeszyty Naukowe / Akademia Morska w Szczecinie
|
2014
|
nr 40 (112)
23--26
EN
In this paper, application of the computational fluid dynamics has been presented in the process of design natural ventilation system for the fishing vessel. There are two main types of ventilation systems: natural ventilation which is used on small fishing vessels and sport craft boatsand, and forced ventilation. This type of ventilation is a common solution on all types of merchant ships. In this paper, solution of the velocity filed in the cargo hold space of the fishing vessel had been presented. Natural ventilation system has been validated using the CFD (Computational Fluid Dynamics). All calculations had been performed in the free CFD software called OpenFOAM.
5
Ogólne założenia modelu symulacyjnego kabiny lakierniczej
Nikończuk P., Królikowski T., Rypina Ł., Sugalski K.
Logistyka
|
2014
|
nr 3
4673--4678
PL
W branży naprawczej samochodów powypadkowych w fazie końcowej wykonuje się prace lakiernicze. Aby zapewnić odpowiednie warunki pracy lakiernika oraz procesu lakierowania odbywają się one wewnątrz kabiny lakierniczej. Optymalizacja konstrukcji oraz prace badawczo rozwojowe w fazie koncepcyjnej wspierane są często tworzeniem modeli symulacyjnych. W artykule przedstawiono koncepcję modelu symulacyjnego kabiny lakierniczej. Model taki pozwoli na analizę rozkładów prędkości i temperatur powietrza w przestrzeni kabiny lakierniczej.
EN
The collision repair industry in the final phase does painting. To ensure adequate working conditions painter and painting process it takes place inside the spray booth. Optimization design and research and development in the concept phase are often supported by the creation of simulation models. The paper presents assumptions of the spray booth simulation model. Such a model will allow for the analysis of air velocity and temperature distributions inside the spray booth.
first rewind previous Strona / 1 next fast forward last
JavaScript jest wyłączony w Twojej przeglądarce internetowej. Włącz go, a następnie odśwież stronę, aby móc w pełni z niej korzystać.