Numerical investigation on heat transfer performance of planar elastic tube bundle by flow-induced vibration in heat exchanger

Duan, Derong; Ge, Peiqi

doi:10.1016/j.ijheatmasstransfer.2016.07.107

Cited by 48 publications

(10 citation statements)

References 22 publications

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“…The results show that the Nu v of the coil with a larger pitch is higher than that of the coil with a smaller pitch. Duan [21], based on the experimental results of Su [18], the heat transfer characteristics of a single-row ETB under different inlet velocities were numerically researched, and the Nu v under different inlet velocities was obtained. The results show that increasing the inlet velocity is beneficial to obtain a higher Nu v .…”

Section: F Numerical Calculation Methods Verificationmentioning

confidence: 99%

“…The results show that increasing the inlet velocity is beneficial to obtain a higher Nu v . For the purpose of verifying the veracity of the numerical method, the same calculation models were established respectively, corresponding with the research objects in the papers [8,21]. Using the meshing strategy and the numerical calculation method in this paper, Nu v under different conditions was calculated, and the comparison between simulation results and experimental results is shown in Table 5.…”

Section: F Numerical Calculation Methods Verificationmentioning

confidence: 99%

“…Using the meshing strategy and the numerical calculation method in this paper, Nu v under different conditions was calculated, and the comparison between simulation results and experimental results is shown in Table 5. Although the shape of the tube bundle in the papers [8,21] is different from the scroll structure studied in this paper, the materials used and the enhanced heat transfer mechanism are completely the same, and a large number of published papers shows that this verification method is effective [10,11,[15][16][17][18][19][20][21].…”

Section: F Numerical Calculation Methods Verificationmentioning

confidence: 99%

“…Their results showed that eddy current has a strong influence on the vibration of planar ETBs, and the HTC under vibration is three times that of nonvibration. Duan et al [20,21] analyzed the vibration-induced heat transfer enhancement of the planar ETBs. The results indicate that the low flow velocity is beneficial to improve the heat transfer enhancement effect, and improving field synergy can greatly promote heat transfer enhancement.…”

Section: Introductionmentioning

confidence: 99%

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Numerical Research on Vibration-Enhanced Heat Transfer of Elastic Scroll Tube Bundle

Ji¹,

Zhang²,

Gao³

et al. 2022

Journal of Thermophysics and Heat Transfer

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Based on a new type of elastic scroll tube bundle (ESTB) heat exchanger, the influence of shell-side fluid inlet velocity and tube bundle constraint condition on the enhanced heat transfer performances are researched by a two-way fluidsolid coupling calculation method. Numerical results show that the average heat transfer coefficient (HTC) increases with the shell-side fluid inlet velocity increases when the single group of scroll copper tubes is unconstrained. Within the range of calculated parameters in this paper, the maximum increase of average HTC is 140% under vibration conditions, and the maximum increase of average HTC is 216% under nonvibration conditions. The average HTC decreases as the number of constraints increases under vibration conditions, and the maximum decrease is 42.69%. The average performance evaluation criteria values are greater than 1.00, so the overall heat transfer performance of the ESTB heat exchanger is better.

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Section: F Numerical Calculation Methods Verificationmentioning

confidence: 99%

Section: F Numerical Calculation Methods Verificationmentioning

confidence: 99%

Section: F Numerical Calculation Methods Verificationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Numerical Research on Vibration-Enhanced Heat Transfer of Elastic Scroll Tube Bundle

Ji¹,

Zhang²,

Gao³

et al. 2022

Journal of Thermophysics and Heat Transfer

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“…Model analysis demonstrates that the inherent vibration forms of the ECP principally include in-plane and out-plane vibrations: in-plane vibrations refer to the vibrations in the plane of the ECPs, and out-plane vibrations refer to the vibrations that are perpendicular to the plane of the ECPs [19]. In addition, the vibration form of the ECP caused by the fluid inside and/or outside the tube manifested as complex smallamplitude and low-frequency vibration [20]. Based on the numerical method, the FIVRs of the single-row ECP induced by the fluid inside and/or outside the tube were studied [9,10].…”

Section: Introductionmentioning

confidence: 99%

Research on Vibration and Heat Transfer in Heat Exchanger with Vortex Generator

Chen

Gao

et al. 2021

Journal of Thermophysics and Heat Transfer

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For realizing effective vibration excitation and control, a new vortex generator (VG) is proposed. Based on a twostep calculation strategy, the flow-induced vibration responses of the elastic coil pipes (ECPs) when installing the VGs in the heat exchanger (HE) are investigated. In various flow-induced situations, the heat transfer performances (HTPs) of the ECPs are studied. Numerical results demonstrate that the VG installed in HE significantly increases the intensities and uniformity of the vibration, and it greatly improves the HTP of the ECP. Under the action of the VG, vibration of the monitored points has two vibration frequencies, that is, the constant frequency (CF) and the variable frequency (VF). The water inlet velocity does not affect the CF, but it affects the VF. The VF increases when the water inlet velocity increases. In addition, the vibration of the ECP is mainly reflected by the CF, and the vibration form is the out-plane vibration.

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