Computational Simulation of Turbulent Flow Around Tractor-Trailers

Redchyts, Dmytro; Shkvar, E. A.; Moiseienko, Svitlana

doi:10.32604/fdmp.2020.07933

Cited by 9 publications

(7 citation statements)

References 3 publications

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“…Modern verification methods and careful testing of the developed programs are absolutely necessary to verify the obtained numerical results and the reliability of the CFD methods. To verify the developed numerical methods, the test calculations of a series of problems such as laminar and turbulent flow around a stationary and rotating cylinder [29], subcritical and supercritical flow around stable and oscillating airfoils NACA 4412 and NACA 0015, aerodynamics of turbulent flow around a 30P30N three-element airfoil in a crash and landing configuration [30], and turbulent flow around a cargo truck-trailer [31] have been performed.…”

Section: Developed Cfd Codementioning

confidence: 99%

Aerodynamic Performance of Vertical-Axis Wind Turbines

Redchyts

Portal-Porras

Tarasov

et al. 2023

JMSE

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The nonstationary separated incompressible flows around Darrieus and Savonius rotors of vertical-axis wind turbines were investigated through computational simulation using the Reynolds averaged Navier–Stokes equations and Spalart–Allmaras turbulence model. The implicit finite-volume algorithm, the basis of which was artificial compressibility method, was chosen to obtain the numerical solution. The series of computational and physical experiments for Darrieus rotors with varied numbers and shapes of blades were performed. The detailed visualization of the flow was presented. The turbulent flows surrounding the Darrieus and Savonius rotors were studied, and as a part of these investigations, the major phases of vortex progress were identified. For this purpose, three series of computer tests on the aerodynamic and power properties of Savonius rotors with two and three buckets were performed, and their results are also presented. The influence of tip-speed ratio, solidity, and Reynolds numbers on the power coefficients of the Darrieus and Savonius rotors was investigated. It has been demonstrated that increasing Reynolds number from 104 to 106 causes a rise in Darrieus rotors power coefficient from 0.15 up to 0.5. The maximum values of power coefficient are moved away from higher values of tip-speed ratio from 2 to 5 as a result of a decrease in Darrieus rotor solidity from 1.0 to 0.33. The greatest power coefficient for a Savonius rotor with two blades is 0.23 and for a Savonius rotor with three blades is 0.19.

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Section: Developed Cfd Codementioning

confidence: 99%

Aerodynamic Performance of Vertical-Axis Wind Turbines

Redchyts

Portal-Porras

Tarasov

et al. 2023

JMSE

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“…Since the fluid unit density determines the fluid mass, the mass is replaced by q. F pressure represents pressure, the force generated by the pressure difference inside the fluid; numerically, it is equal to the gradient of the pressure field, and the direction is from the area with high pressure to the area with low pressure, i.e., F pressure ¼ Àrp. F viscosity is the viscous force, which is caused by the velocity difference between particles [2]. The magnitude of this force is related to the viscosity coefficient μ of the fluid and the velocity difference, i.e., F viscosity ¼ lr 2 ũ.…”

Section: Sphmentioning

confidence: 99%

A Novel Approach for the Numerical Simulation of Fluid-Structure Interaction Problems in the Presence of Debris

Ren¹,

Shu²

2020

Fluid Dynamics &Amp; Materials Processing

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A novel algorithm is proposed for the simulation of fluid-structure interaction problems. In particular, much attention is paid to natural phenomena such as debris flow. The fluid part (debris flow fluid) is simulated in the framework of the smoothed particle hydrodynamics (SPH) approach, while the solid part (downstream obstacles) is treated using the finite element method (FEM). Fluid-structure coupling is implemented through dynamic boundary conditions. In particular, the software "TensorFlow" and an algorithm based on Python are combined to conduct the required calculations. The simulation results show that the dynamics of viscous and non-viscous debris flows can be extremely different when there are obstacles in the downstream direction. The implemented SPH-FEM coupling method can simulate the fluid-structure coupling problem with a reasonable approximation.

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“…In the numerical simulation research on gas injection [10,11], the four core experiments analyze the influencing factors after history matching and optimization. The results found that miscible CO 2 huff-npuff reaches the oil recovery factors about 63.0% [12].…”

Section: Introductionmentioning

confidence: 99%

A Comprehensive Study on the Process of Greenhouse Gas Sequestration Based on a Microporous Media Model

Wang¹,

Zhang²,

Zhang³

et al. 2022

Fluid Dynamics &Amp; Materials Processing

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Carbon dioxide geological sequestration is an effective method to reduce the content of greenhouse gases in the atmosphere of our planet. This process can also be used to improve the production of oil reservoirs by mixing carbon dioxide and crude oil. In the present study, a differential separation experiment (DL) based on actual crude oil components is used to simulate such a process. The results show that after mixing, the viscosity and density of reservoir fluid decrease and the volume coefficient increase, indicating that the pre buried gas induces fluid expansion and an improvement of the fluid rheological properties. These effects are interpreted using a pore scale model based on real scanning electron microscopy (SEM). The results show that increasing the pressure and reducing the viscosity are beneficial to increasing the micro oil displacement efficiency. Moreover, these effects can improve the production in the target area and slow down the decline of the formation pressure. Furthermore, in the case of fracture development in the reservoir (due to CO 2 injection before exploitation), the risk of gas channelling, induced by the displacement pressure difference between injection and production wells, is avoided.

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Computational Simulation of Turbulent Flow Around Tractor-Trailers

Cited by 9 publications

References 3 publications

Aerodynamic Performance of Vertical-Axis Wind Turbines

Aerodynamic Performance of Vertical-Axis Wind Turbines

A Novel Approach for the Numerical Simulation of Fluid-Structure Interaction Problems in the Presence of Debris

A Comprehensive Study on the Process of Greenhouse Gas Sequestration Based on a Microporous Media Model

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