A 3D-CFD study of a γ-type Stirling engine

Kuban, Łukasz; Stempka, Jakub; Tyliszczak, Artur

doi:10.1016/j.energy.2018.12.009

Cited by 24 publications

(9 citation statements)

References 37 publications

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“…The three-dimensional flow characteristics in the cylinder are investigated by solving the continuity, momentum, and energy equations in conjunction with the equations of the turbulence model. In the present work, the shear stress transport turbulence model (SST kω) is used to simulate the turbulent flow in the engine as it achieved good results in many studies in Stirling engines [18], [19] and [20].…”

Section: Simulation Modelmentioning

confidence: 99%

Influence of Using Straight and Twisted Elliptical Section Heater Tubes on Stirling Engine Performance

Abdelhameed

Ahmed²,

Othman³

et al. 2022

JES. Journal of Engineering Sciences

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The heat transfer area of the heater tubes is a significant factor that deeply affects output power and thermal efficiency in Stirling engines. Alpha-type Stirling engine is concerned in this study. Circular section, elliptical section, twisted elliptical section tubes having twist ratios of 2, 3 and 4 are used as heater designs. 3D simulation model using SST K-ω turbulent model is used for simulating airflow through the hot cylinder, heater tubes, regenerator, cooler, and cold cylinder of the Stirling engine, during a complete engine cycle. The results showed that the elliptical section tubes are better than the circular section tubes. The maximum input energy rate, output work and thermal efficiency are achieved by using elliptical section with twist ratio of 2. These values are 4245.87 W, 1225.34 W and 29.55%, respectively with percentage increments of 5.2%, 7.47% and 3.76%, respectively relative to the circular section heater tubes.

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Section: Simulation Modelmentioning

confidence: 99%

Influence of Using Straight and Twisted Elliptical Section Heater Tubes on Stirling Engine Performance

Abdelhameed

Ahmed²,

Othman³

et al. 2022

JES. Journal of Engineering Sciences

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“…Redesign of heater resulted in 1.6% improvement in overall efficiency. The complexity of flow and turbulence characteristics was studied in [13] by using multidimensional CFD method validated with ST05G engine. In [14], a discrete ordinates (DO) radiation model and displacer temperature boundary condition were used in CFD simulation to further reduce the error in performance prediction of a beta type Stirling engine prototype.…”

Section: Introductionmentioning

confidence: 99%

The CFD methodology for simulating pumping loss from displacer and piston seals of free piston Stirling engine

et al. 2022

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A new axisymmetric CFD model capable of describing pumping loss is proposed for free piston Stirling engine (FPSE). Inclusion of clearance seals, bounce space, heater, cooler and regenerator in a single model is the unique strength of this work. For transient simulation of engine, dynamic mesh was utilized for catering needs of moving boundaries. The model was validated with 12.5 kW component test power converter (CTPC) and successfully predicted indicated power, efficiency, pressure amplitude, pressure drop, and gas temperature in expansion and compression space at different piston amplitudes with 6% maximum deviation. The results showed that the heat exchange at heater and cooler was minimized at each flow reversal and was strongly influenced by oscillating gas flow rate. The results also present optimum displacer and piston seal clearance at different charge pressure and operating frequencies. The displacer seal clearance could be increased up to 125?m without compromising power: however, engine output was severely affected with increasing piston seal gap.

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“…With the continuous development of electronic information technology and artificial intelligence technology, the traditional manual operation mode for electrical manual control has been difficult to meet the needs of economic and social development. In recent years, the electrical automation monitoring system of the power plant has played an important role in realizing real-time data monitoring, relay protection, and system communication [1,2]. It can not only greatly improve the work and management efficiency but also save labor costs.…”

Section: Introductionmentioning

confidence: 99%

Research on Electrical Automation Monitoring System Model of Power Plant Based on CAN Bus

Chen

2022

Journal of Electrical and Computer Engineering

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Using the traditional manual operation mode to control the electrical equipment of the power plant was not only inefficient and unsafe but also difficult to adapt to the use of new equipment. Therefore, this article puts forward the research on the model of power plant electrical automation monitoring system based on CAN bus, which was of great significance to improve the operation monitoring ability and management efficiency of power plant electrical equipment. Based on the analysis of the design mode and main functions of electrical equipment automation control system in power plant, this article expounded on the characteristics of CAN bus communication mode and its advantages in realizing electrical equipment automation control. According to the hierarchical management and structural characteristics of the electrical automation monitoring system, the real-time database architecture of the monitoring system was established, the real-time data monitoring and processing method of the electrical monitoring system was given, and then the electrical automation monitoring system model of the power plant was proposed. The experimental results showed that the electrical automation monitoring system proposed in this article was effective and feasible for real-time monitoring of the operation of electrical equipment. The model construction method of the electrical automation monitoring system proposed in this article can provide theoretical reference and technical support for improving the control mode of electrical equipment in power plants.

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A 3D-CFD study of a γ-type Stirling engine

Cited by 24 publications

References 37 publications

Influence of Using Straight and Twisted Elliptical Section Heater Tubes on Stirling Engine Performance

Influence of Using Straight and Twisted Elliptical Section Heater Tubes on Stirling Engine Performance

The CFD methodology for simulating pumping loss from displacer and piston seals of free piston Stirling engine

Research on Electrical Automation Monitoring System Model of Power Plant Based on CAN Bus

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