One-dimension and three-dimension collaborative simulation study of the influence of non-uniform inlet airflow on the heat transfer performance of automobile radiators

Qiu, Sawei; Xu, Congchang; Yang, Zhong; He, Hong; Xia, Erli; Xue, Zhigang; Li, Luoxing

doi:10.1016/j.applthermaleng.2021.117319

Cited by 5 publications

(3 citation statements)

References 29 publications

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“…Based on the above content, the calculation result is shown in Figure 4 The nonlinear fitting correlation between pressure gradient and viscosity is obtained. On this basis, anisotropic permeability matrix κ can be obtained through calculation of H direction and Z direction respectively, as shown in Equation (7). In macro heat exchanger model, κ and β were the key parameters to characterize the flow resistance of the oil cooler.…”

Section: Nonlinear Fitting Correlationmentioning

confidence: 99%

“…Mortean predicted the performance of heat exchanger through the correlation of flow and heat transfer performance, but its simulation accuracy was only about ±20% [6]. Qiu used performance-heat transfer Unit number method (ε-NTU) and Davenport's modified equation to build a flow heat transfer analysis model for heat exchangers, but the accuracy of the model was only between −10% and +24% [7]. Deng fitted the test correlation of outer fins of automotive heat exchangers through experiments to improve the overall performance of heat exchangers [8].…”

Section: Introductionmentioning

confidence: 99%

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Numerical Study and Structural Optimization of Vehicular Oil Cooler Based on 3D Impermeable Flow Model

Zhang

et al. 2022

Sustainability

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A non-uniform permeable flow numerical model of vehicular oil cooler was proposed to simulate the thermal performance of oil cooler, due to the complex internal structure of cooler and the anisotropy of coolant flow and heat transfer. By comparing the numerical simulation results with the experimental results, the maximum error of the simulation results under different working conditions is 9.2%, which indicates that the modelling method is reliable and can improve the development efficiency. On this basis, through the three-dimensional numerical simulation to establish and optimize the oil cooler’s parameters. The thermal performance under different structural oil cooler were compared using the comprehensive evaluation factor j/f. The results and the experimental data show that under the impermeable flow model can obtain good heat transfer efficiency with low flow resistance at the same time. When the cross-sectional area is 3 mm2, length of 90 mm, layer number of 11, the model accuracy was 0.6%, as the optimal structure parameters, the heat transfer increase by 47% and with the total pressure drop increased by only 30%.

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Section: Nonlinear Fitting Correlationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Numerical Study and Structural Optimization of Vehicular Oil Cooler Based on 3D Impermeable Flow Model

Zhang

et al. 2022

Sustainability

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“…Independent finned-tube heat exchangers (FTHEs) are widely utilized in heat generation systems, such as cryogenics [1], air conditioning [2], radiators of automobiles [3], aerospace [4], and nuclear power stations [5]. The intent of FTHEs is to dissipate the heat generated to the external environment to improve the efficiency of the engineering systems.…”

Section: Introductionmentioning

confidence: 99%

Numerical Investigation of Thermal-Flow Characteristics in Heat Exchanger with Various Tube Shapes

et al. 2021

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In this study, eight configurations of oval and flat tubes in annular finned-tube thermal devices are examined and compared with the conventional circular tube. The objective is to assess the effect of tube flatness and axis ratio of the oval tube on thermal-flow characteristics of a three-row staggered bank for Re (2600 ≤ Re ≤ 10,200). It has been observed that the thermal exchange rate and Colburn factor increase according to the axis ratio and the flatness, where O1 and F1 provide the highest values. O1 produces the lowest friction factor values of all the oval tubes at all Re, and F4 gives 13.2–18.5% less friction than the other tube forms. In terms of performance evaluation criterion, all of the tested tubes outperformed the conventional circular tube (O5), with O1 and F1 obtaining the highest values. The global performance criterion of O1 has been found to be 9.6–45.9% higher as compared to the other oval tube geometries at lower values of Re, and the global performance criterion increases with the increase in flatness. The F1 tube shape outperforms all the examined tube designs; thus, this tube geometry suggests that it be used in energy systems.

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A digital twin-based multidisciplinary collaborative design approach for complex engineering product development

You-de

Zhou

Zheng

et al. 2022

Advanced Engineering Informatics

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One-dimension and three-dimension collaborative simulation study of the influence of non-uniform inlet airflow on the heat transfer performance of automobile radiators

Cited by 5 publications

References 29 publications

Numerical Study and Structural Optimization of Vehicular Oil Cooler Based on 3D Impermeable Flow Model

Numerical Study and Structural Optimization of Vehicular Oil Cooler Based on 3D Impermeable Flow Model

Numerical Investigation of Thermal-Flow Characteristics in Heat Exchanger with Various Tube Shapes

A digital twin-based multidisciplinary collaborative design approach for complex engineering product development

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