Experimental and Numerical Methods for Hydrodynamic Profiles Calculation

Scupi, Andrei Alexandru; Dinu, Dumitru

doi:10.1201/b11344-7

Cited by 4 publications

(4 citation statements)

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“…The water is heated in the boiler, which can be with steam, hot water, burner or electric. Regardless of the type of boiler, the installation includes: a circulation pump, an equalization tank and a temperature transducer that controls the start/stop of the pump and the control of the steam valve in order to obtain the preset temperature [25].…”

Section: Resultsmentioning

confidence: 99%

“…-For category 1 consumers: α = 0.3 and q = 0.07 L/s; -For category 2 consumers: α = 0.2 and q = 0.2 L/s; -For category 3 consumers: α = 0.4 and q = 0.15 L/s; -For category 4 consumers: α = 0.5 and q = 0.3 L/s; -For category 5 consumers: α = 0.25 and q = 0.2 L/s [25].…”

Section: Resultsmentioning

confidence: 99%

“…9 represents the number of starts per hour, we consider i = 8 for the calculation. Its volume will be [25]:…”

Section: Resultsmentioning

confidence: 99%

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Study on the Design Stage from a Dimensional and Energetic Point of View for a Marine Technical Water Generator Suitable for a Medium Size Container Ship

Faitar

Rusu

2023

Inventions

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The purpose of this study is to provide an overview of the development of the modern low-speed marine two-stroke diesel engine from the point of view of the technical water cooling plant, taking into account and starting from the market requirements for power and speed, with information and design options relevant to the entire shipping industry. Thus, through the ideas of this project, we analyze notions and relevant aspects of systems related to marine slow turning engines, including the basic thermodynamic structure of the technical water system designed for a marine engine. This study also presents the design criteria that define the size and design concept of the engine structure components, with a focus on the technical water cooling installation. The concepts for the main engine hot parts served by the technical water cooling installation play a vital role in the marine technical water generator. The choices the engine designer must make regarding basic auxiliary systems, such as fuel injection and exhaust valve actuation, are important factors to keep in mind when installing a technical water generator onboard a ship. The automation and control systems that govern the modern electronic engine, which drive the supply pump of the technical water cooling system can provide a simplified view of the engine development process. In order to point out the contributions of this study, it is important to focus on the calculations used to determine the main parameters of a technical water generator especially designed for a midsized container ship.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

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Study on the Design Stage from a Dimensional and Energetic Point of View for a Marine Technical Water Generator Suitable for a Medium Size Container Ship

Faitar

Rusu

2023

Inventions

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“…when calculating the lift and the drag force over a hydrodynamic wing [12]. In Figure 6 Drag force graphic obtained by using numerical programs Figure 7.…”

Section: Illustration Of Various Phenomena In Fluids Dynamicsmentioning

confidence: 99%

The use of numerical programs in research and academic institutions

Scupi

2016

IOP Conf. Ser.: Mater. Sci. Eng.

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Abstract. This paper is conceived on the idea that numerical programs using computer models of physical processes can be used both for scientific research and academic teaching to study different phenomena. Computational Fluid Dynamics (CFD) is used today on a large scale in research and academic institutions. CFD development is not limited to computer simulations of fluid flow phenomena. Analytical solutions for most fluid dynamics problems are already available for ideal or simplified situations for different situations. CFD is based on the NavierStokes (N-S) equations characterizing the flow of a single phase of any liquid. For multiphase flows the integrated N-S equations are complemented with equations of the Volume of Fluid Model (VOF) and with energy equations. Different turbulent models were used in the paper, each one of them with practical engineering applications: the flow around aerodynamic surfaces used as unconventional propulsion system, multiphase flows in a settling chamber and pneumatic transport systems, heat transfer in a heat exchanger etc. Some of them numerical results were validated by experimental results. Numerical programs are also used in academic institutions where certain aspects of various phenomena are presented to students (Bachelor, Master and PhD) for a better understanding of the phenomenon itself.

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