Experimental determination of thermal contact conductance between pressure and calandria tubes of Indian pressurised heavy water reactors

Dureja, A.K.; Pawaskar, Dnyanesh N.; Seshu, P.; Sinha, Sucharita; Sinha, R.K.

doi:10.1016/j.nucengdes.2014.11.025

Cited by 11 publications

(3 citation statements)

References 9 publications

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“…The contact pressure can enlarge the real contact area, which can cause the TCR decrease, but with a little effect compared to the effect of the interface temperature. Dureja et al (2015) developed an experimental setup and procedures to determine the thermal contact conductance of disc shaped flat specimens. The results obtained indicate that the thermal contact conductance values are linear functions of the contact pressure in the range of 1-10 MPa.…”

Section: Frontiers In Heat and Mass Transfermentioning

confidence: 99%

Numerical Study of the Gasket Thermal Conductivity Effect on the Thermal Contact Resistance Between Two Solids in Contact

Rachid¹,

Lebon²,

Rosu³

et al. 2017

Frontiers in Heat and Mass Transfer

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In this paper, a numerical model investigating the impact of gasket thermal quality on the reduction in the thermal contact resistance (TCR) between two solids is presented and validated analytically. The model proposed is a 2D steady state model. The thermal conductivity of the solid materials ranges from 20 to 390 W/m·K, and the gasket thermal conductivity ranges from 0.16W/m·K (TC of rubber) to and 5W/m·K (TC of thermal paste). As expected, the results obtained clearly confirm that the gasket significantly improves the heat transfer between two solids in contact, and in particular that the TCR is decreased with increasing gasket thermal conductivity. The numerical results are validated by an analytical model which shows that the gasket has a crucial effect on the heat transfer enhancement between the solids in contact.

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Section: Frontiers In Heat and Mass Transfermentioning

confidence: 99%

Numerical Study of the Gasket Thermal Conductivity Effect on the Thermal Contact Resistance Between Two Solids in Contact

Rachid¹,

Lebon²,

Rosu³

et al. 2017

Frontiers in Heat and Mass Transfer

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“…The obtained results show that the TCC have power relationship with interfacial temperature, and there are maximum values near 346 °C and minimum values near 214 °C. Dureja et al [7] presented an experimental study and procedures to estimate the TCC of disc shaped flat specimens. The results show that the TCC values are linear functions of contact pressure in the range of 1-10 MPa.…”

Section: Introductionmentioning

confidence: 99%

Numerical Study of the Surface Roughness, Thermal Conductivity of the Contact Materials and Interstitial Fluid Convection Coefficient Effect on the Thermal Contact Conductance

Rachid¹,

Lebon²,

Rosu³

et al. 2019

ACSM

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In this paper, a numerical simulation by the computer code ABAQUS (6.14) was conducted to study the influence of the thermal conductivity, the interstitial fluid convection coefficient and surface roughness on the thermal contact conductance "TCC" to improve the heat transfer between the materials in contact. In our study, the pairs specimens involved have a thermal conductivity k ranging between 20 w/m• K to 390 w/m• K. The diameter of specimen d is 2 cm, the height L is 8 cm, and the surface roughness Ra is in the range of 5 to 20µm. Results indicated that the surface roughness and thermal conductivity present a power law relationship with heat transfer enhancement between solids in contact. Moreover, the interstitial fluid convection coefficient influences weakly the variation in the thermal contact conductance. The TCC magnitude increase more rapidly with decrease of the specimen's surface roughness when the latters have high thermal conductivity than when they have low thermal conductivity.

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“…IHTC evaluation studies have been increasing during the last few years, in several areas of industry. Recently, Dureja et al [16] have proposed a new experimental set-up, for the IHTC determination between pressure and calandria tubes from a heavy water reactor.…”

Section: Introductionmentioning

confidence: 99%

Numerical modeling of the thermal contact in metal forming processes

Martins

Neto

Alves

et al. 2016

Int J Adv Manuf Technol

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Heat flow across the interface of solid bodies in contact is an important aspect in several engineering applications. This work presents a finite element model for the analysis of thermal contact, which takes into account the effect of contact pressure and gap dimension in the heat flow across the interface between two bodies. Additionally, the frictional heat generation is also addressed, which is dictated by the contact forces predicted by the mechanical problem. The frictional contact problem and thermal problem are formulated in the frame of the finite element method. A new law is proposed to define the interfacial heat transfer coefficient (IHTC) as a function of the contact pressure and gap distance, enabling a smooth transition between two contact status (gap and contact). The staggered scheme used as coupling strategy to solve the thermomechanical problem is briefly presented. Four numerical examples are

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Experimental determination of thermal contact conductance between pressure and calandria tubes of Indian pressurised heavy water reactors

Cited by 11 publications

References 9 publications

Numerical Study of the Gasket Thermal Conductivity Effect on the Thermal Contact Resistance Between Two Solids in Contact

Numerical Study of the Gasket Thermal Conductivity Effect on the Thermal Contact Resistance Between Two Solids in Contact

Numerical Study of the Surface Roughness, Thermal Conductivity of the Contact Materials and Interstitial Fluid Convection Coefficient Effect on the Thermal Contact Conductance

Numerical modeling of the thermal contact in metal forming processes

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