Computer simulation of mechanical seal leads to design change that improves coolant circulation

Clark, Ray; Azibert, Henri; Oshinowo, Lanre

doi:10.1016/s0261-3069(01)00048-6

Cited by 4 publications

(4 citation statements)

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“…The comparisons of stress and deformation. The positions of every scheme's maximum stress and deformation are consistent with the original design by the finite element analysis [3][4]. As Fig.…”

Section: Finite Element Methods Analysis Of the Optimization Schemesmentioning

confidence: 59%

Seal Analysis and Optimization of Large Diameter Gate Valve Based on ANSYS

Hou

2013

AMM

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Aiming at the leakage problem on the top of gate valve, the finite element method is used to analyze the gate valves seal face and body, as well as the distributing laws of the stress, deformation and seal pressure are obtained. The shutter is simplified as the circular plate simply supported on the whole circle, and the gate valve is optimized according to the relevant formula to meet sealing requirement. The results show that: the combination of the numerical simulation and theoretical calculation, not only the more accurate theoretical basis for the optimization of the large diameter gate valve can be provided, but also the time of the development and design can be shorten greatly.

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Section: Finite Element Methods Analysis Of the Optimization Schemesmentioning

confidence: 59%

Seal Analysis and Optimization of Large Diameter Gate Valve Based on ANSYS

Hou

2013

AMM

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“…The complex time-dependant mechanical seal problems can be easily solved using the CFD simulation software package (Clark et al, 2002). A three-dimensional model of the seal chamber is modeled and analyzed using ANSYS 14 Fluent ® .…”

Section: Cfd Modeling and Simulationmentioning

confidence: 99%

Experimental and CFD investigations of carbon/SS316 mechanical face seals under different lubricating conditions

Kavinprasad

Shankar

Karthic³

2015

Industrial Lubrication and Tribology

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Purpose -The purpose of this paper is to test mechanical face seals made of carbon/SS316 with different coolants for evaluating its tribological performance. The reliability of a mechanical seal mainly depends on the seal materials and the type of coolant used for the lubrication. Design/methodology/approach -Compressed air, vacuum and nitrogen are the main coolants utilized for the experimental work, and the obtained results are compared with the dry running case for a specified period. The experimental results are also validated with the computational fluid dynamics (CFD) simulation results. Findings -The results shows that the sealing pressure, sliding speed and materials used would be the predominant factors for the seal design. Over compressed air, vacuum and nitrogen cooling techniques were found to be more efficient. Originality/value -The experimental results are also validated with the CFD simulation results. This paper also emphasizes the usage of vacuum as a cooling medium in industries, which will enhance the seal life at an economical cost over nitrogen.

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“…The shaft seal is an isolation device to prevent the leakage of reactor coolant pumps (RCP) (Salant et al, 2018), which is directly related to the safe operation of the nuclear power plant (Nilsson et al, 2009;Baraldi et al, 2011;Feng et al, 2016;Kok and Benli, 2017;Luqman et al, 2019). As one of the key components of shaft seals, the mechanical seal (Harp and Salant, 1998;Clark et al, 2002;Simon, 2018) plays a vital role in the safety and reliability of the entire structure, where different shapes of its end face lead to the different hydraulic effects (hydrodynamic and hydrostatic effects). In comparison with the hydrostatic seals, hydrodynamic seals can reach better performance owing to its hydrodynamic effect (Pascovici and Etsion, 1992;Batten et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

“…Among others, in order to analyze the pressure and temperature distribution within a mechanical seal, Merati et al (1999) established a computational model for flow and thermal analysis, which could effectively predict both the flow field characteristics in the seal chamber and the temperature distribution within the stator. On the other hand, wanting to improve the performance of a mechanical seal, Clark et al (2002) established a coupled thermal-hydraulic model based on the CFD method. Based on the associated model, they proposed some effective measures to improve the cooling effect of the stationary ring's end faces.…”

Section: Introductionmentioning

confidence: 99%

Characteristics of the Waviness End-Face Mechanical Seal in Reactor Coolant Pump Considering the Viscosity-Temperature Effect

Ma¹,

Wang²,

Zhou

et al. 2021

Front. Energy Res.

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Mechanical seals prevents flow leakages in reactor coolant pumps thus playing an important role in their operational safety. However, their operational performance depends on different parameters, the seal geometrical design and the sealing medium characteristics among others. This study investigates the main performances of the waviness end-face mechanical seal, considering the effect of fluid flow and thermal characteristics. The involved coupled thermal-hydraulic process is simulated using the OpenFOAM, based on the coupled Navier-Stokes and energy balance equations. Study results showed that the viscosity-temperature effect may increase the flow leakage, and decrease both the opening force and the liquid film stiffness. The later may be decreased to negative values under specific conditions. It’s therefore generally found that visco-thermal characteristics of the sealing medium may negatively affect mechanical seal’s operational stability. On the other hand, from the perspective of liquid film temperature rise, the visco-thermal effect may lead to the regulation of the temperature rise in the liquid film, which improves the mechanical seal’s operational safety in some aspects. Through a comprehensive analysis, the optimal structural parameters of the waviness mechanical seal investigated in this study are found to be hi = 2.5μm, β = 900μrad (Rd-Ri)/(Ro-Ri) = 0.2, α = 0.8, and k = 9.

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Computer simulation of mechanical seal leads to design change that improves coolant circulation

Cited by 4 publications

References 0 publications

Seal Analysis and Optimization of Large Diameter Gate Valve Based on ANSYS

Seal Analysis and Optimization of Large Diameter Gate Valve Based on ANSYS

Experimental and CFD investigations of carbon/SS316 mechanical face seals under different lubricating conditions

Characteristics of the Waviness End-Face Mechanical Seal in Reactor Coolant Pump Considering the Viscosity-Temperature Effect

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