CFD simulation of a Gifford–McMahon type pulse tube refrigerator

Banjare, Yamuna Prasad; Sahoo, Ranjit Kumar; Sarangi, Sunil

doi:10.1016/j.ijthermalsci.2009.04.013

Cited by 24 publications

(8 citation statements)

References 10 publications

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“…It is observed from the above figure that the CFD time scales are much smaller when compared to the experimental time scales. The above observation is in agreement with other CFD studies both on thermoacoustic systems and pulse tube cryocoolers, where similar behaviour is observed [29,37,38]. This may be due to the size of the time steps which are chosen for the CFD analysis.…”

Section: Cfd Analysis Of the Thermoacoustically Driven Standing Wave supporting

confidence: 92%

Simulation studies on the performance of thermoacoustic prime movers and refrigerator

Skaria¹,

Rasheed²,

Shafi³

et al. 2015

Computers & Fluids

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Section: Cfd Analysis Of the Thermoacoustically Driven Standing Wave supporting

confidence: 92%

Simulation studies on the performance of thermoacoustic prime movers and refrigerator

Skaria¹,

Rasheed²,

Shafi³

et al. 2015

Computers & Fluids

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“…with 2 the density, the specific heat, the mass flow rate, the heat transfer coefficient, and , , and defined as in Fig. 1.…”

Section: A Mathematical Formulationmentioning

confidence: 99%

“…Although some interesting results can be found in the heat exchanger modelling literature [2], [3], [23], [24], [48], several important practical and theoretical problems remain to be solved as far as heat exchanger identification is concerned. One of them has to do with the selection of a proper model structure.…”

Section: Introductionmentioning

confidence: 99%

Continuous-Time Linear Parameter-Varying Identification of a Cross Flow Heat Exchanger: A Local Approach

Mercère

Pálsson

Poinot

2011

IEEE Trans. Contr. Syst. Technol.

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In this paper, the problem of deriving a dynamical model of a cross flow heat exchanger is considered. In order to take into account the dependency of the system's dynamics on the hot and the cold mass flow rates in an explicit way, an input-output linear parameter-varying (LPV) model is used. A local approach composed of three steps is carried out to identify this LPV model. A parameter estimation scheme is introduced in which cost functions are minimized by using specific nonlinear programming methods. In this study, a finite volume physical model simulator is exploited to simulate and to generate the data. Simulations are performed to demonstrate the benefits of the suggested approach.Index Terms-Cross flow heat exchanger, interpolation, linear parameter-varying (LPV) model, local approach, numerical modeling, output-error method.

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“…Then a comparison was made with previous experimental data and the current CFD results. Figure 1 shows the 2-D modeled DIPTR, for which the geometry of Gifford-McMahon-type DIPTR was compared with literature [31]. The dimension of DIPTR was taken in L/D ratio, which was for transfer line 21.098, after cooler 0.846, regenerator 9.772, heat exchanger cold-end 1.470, pulse tube 16.8, heat exchanger hot-end 0.956 and for reservoir 2.772.…”

Section: Introductionmentioning

confidence: 99%

Impact of Varying Load Conditions and Cooling Energy Comparison of a Double-Inlet Pulse Tube Refrigerator

et al. 2020

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Modeling and optimization of a double-inlet pulse tube refrigerator (DIPTR) is very difficult due to its geometry and nature. The objective of this paper was to optimize-DIPTR through experiments with the cold heat exchanger (CHX) along the comparison of cooling load with experimental data using different boundary conditions. To predict its performance, a detailed two-dimensional DIPTR model was developed. A double-drop pulse pipe cooler was used for solving continuity, dynamic and power calculations. External conditions for applicable boundaries include sinusoidal pressure from an end of the tube from a user-defined function and constant temperature or limitations of thermal flux within the outer walls of exchanger walls under colder conditions. The results of the system’s cooling behavior were reported, along with the connection between the mass flow rates, heat distribution along pulse tube and cold-end pressure, the cooler load’s wall temp profile and cooler loads with varied boundary conditions i.e. opening of 20% double-inlet and 40-60% orifice valves, respectively. Different loading conditions of 1 and 5 W were applied on the CHX. At 150 K temperature of the cold-end heat exchanger, a maximum load of 3.7 W was achieved. The results also reveal a strong correlation between computational fluid dynamics modeling results and experimental results of the DIPTR.

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CFD simulation of a Gifford–McMahon type pulse tube refrigerator

Cited by 24 publications

References 10 publications

Simulation studies on the performance of thermoacoustic prime movers and refrigerator

Simulation studies on the performance of thermoacoustic prime movers and refrigerator

Continuous-Time Linear Parameter-Varying Identification of a Cross Flow Heat Exchanger: A Local Approach

Impact of Varying Load Conditions and Cooling Energy Comparison of a Double-Inlet Pulse Tube Refrigerator

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