Analysis of potential flow around two-dimensional body by finite element method

Tarafder, Md. Shahjada; Naz, Nabila

doi:10.5897/jmer2014.0342

Cited by 6 publications

(1 citation statement)

References 9 publications

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“…This study also illustrates that the average velocity and pressure and discharge coefficients in the impeller area are theoretically obtained by using the potential flow theory [16] and the approach of flow around the body and experimental measurements [17] on each turbine section. Furthermore, flow velocity in the ducted is analyzed for turbulent flow with a commonly used factor of 1/7 th of power law [7] and uses continuance and Bernoulli principles [8] and actuator disc model [18].…”

Section: Introductionmentioning

confidence: 68%

Fluid Flow Study in Various Shapes and Sizes of Horizontal Axis Sea Current Turbine

Rumaherang

Latuny

2021

Sinergi

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The ducted tidal turbine models have been developed to utilize the conversion of the kinetic energy on ocean currents. The research in refining the turbine characteristics has been carried out by modifying the turbine’s shape and size. This study investigated flow characteristics in the meridional section of five ducted turbines models for seawater flow with velocity U0 = 1.5 m/s. The ducted turbine design and construction have five different impeller house diameters and fixed inlet and outlet diameters. The potential energy flow theory and experimental data are used to analyze the flow characteristics of the model. The results show that flow velocity in the x-direction at the inlet and outlet cross-section is getting smaller, reducing the impeller house cross section. Each impeller house size reduction increases the flow speed in the impeller house cross-section and also pressure on all other cross-sections tested. In the inlet area, the increased pressure indicates a decrease in speed flow and discharge coefficient value. The discharge coefficient value decreases from CQ = 0.9 at the diameter ratio of dr = 1 to CQ = 0.56 at the diameter ratio of dr = 0.375. The maximum value of power coefficient was determined at dr = 0,61÷0.73 or dr = 0.69 which is equivalent to average internal flow velocity Vr =2.0÷2.6 m/s and the static pressure ps = 97.1÷ 94.4 kPa. At the ratio value of D0/D2 = 0.83, the optimal diameter ratio dropt=0,61÷0.73 is in line with the duct model of case 3 and case 4, but it may be determined solely as for case 4.

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Section: Introductionmentioning

confidence: 68%

Fluid Flow Study in Various Shapes and Sizes of Horizontal Axis Sea Current Turbine

Rumaherang

Latuny

2021

Sinergi

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Accurate higher order automated unstructured triangular meshes for airfoil designs in aerospace applications using parabolic arcs

Devi

Nagaraja

Smitha

et al. 2019

Aerospace Science and Technology

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A finite element implementation of the incompressible Schrödinger flow method

Riva,

Introini,

Cammi

2024

Physics of Fluids

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As first proposed by Madelung in 1926, the analogy between quantum mechanics and hydrodynamics has been known for a long time; however, its potentialities and the possibility of using the characteristic equations of quantum mechanics to simulate the behavior of inviscid fluids have not been thoroughly investigated in the past. In this methodology, the incompressible Euler equations are thus substituted by the Schrödinger equation, turning a quasi-linear Partial Differential Equation into a linear one, an algorithm known in the literature as Incompressible Schrödinger Flow. Previous works on the subject used the Fast Fourier Transform method to solve this problem, obtaining promising results, especially in predicting vortex dynamics; this paper aims to implement this novel approach into a Finite Element framework to find a more general formulation better suited for future application on complex geometries and on test cases closer to real-world applications. Simple case studies are presented in this work to analyze the potentialities of this method: the results obtained confirm that this method could potentially have some advantages over traditional Computational Fluid Dynamics method, especially for what concerns computational savings related to the required time discretization, whilst also introducing new aspects of the algorithm, mainly related to boundary conditions, not addressed in previous works.

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Analysis of potential flow around two-dimensional body by finite element method

Cited by 6 publications

References 9 publications

Fluid Flow Study in Various Shapes and Sizes of Horizontal Axis Sea Current Turbine

Fluid Flow Study in Various Shapes and Sizes of Horizontal Axis Sea Current Turbine

Accurate higher order automated unstructured triangular meshes for airfoil designs in aerospace applications using parabolic arcs

A finite element implementation of the incompressible Schrödinger flow method

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