CFD design and simulation of ethylene dichloride (EDC) thermal cracking reactor

Davarpanah, Afshin; Zarei, Mojtaba; Valizadeh, Kamran; Mirshekari, Behnam

doi:10.1080/15567036.2018.1549133

Cited by 31 publications

(19 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Since the governing Equations (6) and (7) are highly coupled and nonlinear, to the best of our information, it is difficult to find their analytical solutions based on the current theory. Some numerical methods, and the calculation software have been applied as an effective tool to simulate the flow of non-Newtonian fluids [31][32][33]. In this section, the numerical solutions of governing Equations (6) and 7are obtained by an effective finite difference method.…”

Section: The Numerical Techniquementioning

confidence: 99%

Numerical Solutions of Unsteady Boundary Layer Flow with a Time-Space Fractional Constitutive Relationship

et al. 2020

View full text Add to dashboard Cite

In this paper, we develop a new time-space fractional constitution relation to study the unsteady boundary layer flow over a stretching sheet. For the convenience of calculation, the boundary layer flow is simulated as a symmetrical rectangular area. The implicit difference method combined with an L1-algorithm and shift Grünwald scheme is used to obtain the numerical solutions of the fractional governing equation. The validity and solvability of the present numerical method are analyzed systematically. The numerical results show that the thickness of the velocity boundary layer increases with an increase in the space fractional parameter γ. For a different stress fractional parameter α, the viscoelastic fluid will exhibit viscous or elastic behavior, respectively. Furthermore, the numerical method in this study is validated and can be extended to other time-space fractional boundary layer models.

show abstract

Section: The Numerical Techniquementioning

confidence: 99%

Numerical Solutions of Unsteady Boundary Layer Flow with a Time-Space Fractional Constitutive Relationship

et al. 2020

View full text Add to dashboard Cite

show abstract

“…Energy is important in any societies [1][2][3]. Direct drive hydraulic system has been widely used for the advantages of high energy efficiency, easy installation, high reliability and so on [4][5][6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Experimental Study of the Direct Drive Hydraulic System with the Torque Mode

Zhang

Jiang

2021

Energies

View full text Add to dashboard Cite

The torque mode is more suitable for the direct drive 6 degree of freedom (6-DOF) parallel mechanism than the speed mode that both dynamic coupling and current coupling among motors are easily solved, but its key parameters and dynamic characteristics have never been studied, which are important and are the goals of this paper. First the hydraulic system of the direct drive 6-DOF parallel mechanism is simplified. Then the transfer function of the direct drive hydraulic system with the torque mode is deduced together with that of the speed mode. Finally, comparative experiments are conducted. Results show that the dynamic characteristics of the system with the torque mode which are generally worse than those with the speed mode, are mainly determined by the parameters of the motor-pump second-order element of the transfer function composed of two under-damped second-order elements, proportion differentiation (PD) control strategy and dynamic pressure feedback (DPF) control strategy are useful for the system with the torque mode, but practical and effective methods are still needed.

show abstract

“…It can also provide development opportunities for remote areas. The disadvantages include causing instability in earth structures due to extensive use and corrosion caused by sulfur compounds in geothermal fluids [5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Thermodynamic Optimization of a Geothermal Power Plant with a Genetic Algorithm in Two Stages

et al. 2020

Self Cite

View full text Add to dashboard Cite

Due to the harmful effects and depletion of non-renewable energy resources, the major concerns are focused on using renewable energy resources. Among them, the geothermal energy has a high potential in volcano regions such as the Middle East. The optimization of an organic Rankine cycle with a geothermal heat source is investigated based on a genetic algorithm having two stages. In the first stage, the optimal variables are the depth of the well and the extraction flow rate of the geothermal fluid mass. The optimal value of the depth of the well, extraction mass flow rate, and the geothermal fluid temperature is found to be 2100 m, 15 kg/s, and 150 °C. In the second stage, the efficiency and output power of the power plant are optimized. To achieve maximum output power as well as cycle efficiency, the optimization variable is the maximum organic fluid pressure in the high-temperature heat exchanger. The optimum values of energy efficiency and cycle power production are equal to 0.433 MW and 14.1%, respectively.

show abstract

CFD design and simulation of ethylene dichloride (EDC) thermal cracking reactor

Cited by 31 publications

References 25 publications

Numerical Solutions of Unsteady Boundary Layer Flow with a Time-Space Fractional Constitutive Relationship

Numerical Solutions of Unsteady Boundary Layer Flow with a Time-Space Fractional Constitutive Relationship

Experimental Study of the Direct Drive Hydraulic System with the Torque Mode

Thermodynamic Optimization of a Geothermal Power Plant with a Genetic Algorithm in Two Stages

Contact Info

Product

Resources

About