Heat transfer and thermal stress analysis in fluid-structure coupled field

Li, Ming-Jian; Pan, Jun-Hua; Ni, Ming-Jiu; Zhang, Nian-Mei

doi:10.1016/j.applthermaleng.2014.09.071

Cited by 20 publications

(10 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Some studies were devoted to the analysis of small scale tanks containing pressurized hydrogen gas exposed to localized fires, supported by specific experiments (e.g., Zheng et al 2012 Another key issue that may be investigated through distributed parameters code is the structural response of equipment when exposed to fire. In this case, finite elements modeling (FEM) may be applied for the assessment of the mechanical behavior, thus supporting the prediction of failure conditions, as documented in several industrial studies (e.g., Andreev and Harmuth (2003), Feng et al (2013), Li et al (2014)). Saldi and Wen (2016) adopted a specific model for the failure assessment of hydrogen cylinders for automotive applications.…”

Section: Introductionmentioning

confidence: 78%

Coupling of integral methods and CFD for modeling complex industrial accidents

Rum

Landucci

Galletti

2018

Journal of Loss Prevention in the Process Industries

View full text Add to dashboard Cite

Safety enhancement of operations in the chemical and petrochemical industry requires for advances in the tools aimed at supporting risk estimation and evaluation. In conventional risk studies, consequence assessment is carried out through simplified tools and conservative assumptions, often resulting in overestimation of accident severity and worst-case scenarios. Computational Fluid Dynamics (CFD) may overcome the limitation of simplified approaches supporting the study of the dynamic evolution of accidental scenarios and, eventually, the consequences analysis of major accidents. However, the complexity of the problem makes the simulations too computationally demanding; hence an interesting approach is to couple simplified tools based on integral models and CFD. This work is aimed at modeling a safety critical scenario, i.e. domino effect triggered by fire. An integral model is adopted to reproduce a large-scale pool fire, thus simulating the radiative heat received by an exposed pressurized vessel. The behavior of the latter is then modeled through CFD, to investigate the heat-up process and the consequent pressure build up. Potential benefits and limitations of coupling distributed and integral models to support consequence assessment studies are discussed

show abstract

Section: Introductionmentioning

confidence: 78%

Coupling of integral methods and CFD for modeling complex industrial accidents

Rum

Landucci

Galletti

2018

Journal of Loss Prevention in the Process Industries

View full text Add to dashboard Cite

show abstract

“…The temperature, deformation, and stress distribution of recuperator structures were studied in this paper based on fluid‐solid coupling method. The PbLi fluid is considered as incompressible fluid, and the governing equations of mass, momentum, energy can be written as following:…”

Section: Physical Model and Mathematical Methodsmentioning

confidence: 99%

Analysis on stress and deformation of large-scale concentric recuperator for high-temperature PbLi loop

2018

View full text Add to dashboard Cite

A lead lithium (PbLi) loop named as DRAGON-V was constructed in China to test key technologies of material corrosion, thermal-hydraulics, safety issues, etc for PbLi blanket of fusion reactor. The concentric recuperator, one of the most important components, was used to recover the enthalpy in the loop. To design the concentric recuperator structure, the tangent angle θ between straight pipe and elbow as well as the bending radius R for U-type connecting elbow were analyzed, respectively. It was indicated that the elbow presented well thermal deformation-absorbing function and reduced the thermal stress.There was a little effect on the deformation and heat transfer for the variation of R and θ, but the stress intensity increased with bending radius R and decreased with tangent angle θ. The results showed that the stress intensity in the structure with θ = 5°and R = 1.5D was smaller than the others. And the optimized structure was evaluated according to standard of Steel Pressure Vessel-Design by Analysis, the structural strength met the design requirement, and large margin was kept for engineering application.

show abstract

“…[9][10][11] Fluid-structure interaction mechanics is a branch of fluid and solid mechanics that is mainly concerned with the behavior of solids in a flow field and the influence of solid deformation on flow field. 12,13 If the flow field, temperature field, and structure are solved separately, the computational results of structural deformation caused by the heat transfer and fluid pressure of the pipe network will deviate from the actual situation. Meanwhile, flow-heat-solid coupling analysis method can accurately reflect the interaction of fluid and structure deformation.…”

Section: Introductionmentioning

confidence: 99%

Effects of different loads on structure deformation of “L”‐type large‐diameter buried pipe network based on flow–heat–solid coupling

Feng

2017

Heat Trans. Asian Res.

View full text Add to dashboard Cite

Large‐diameter buried pipelines are widely used because of their energy‐saving advantages and high efficiency. In this paper, an “L”‐type heat pipe network was taken as the research object and was studied using the flow–heat–solid coupling method. The ANSYS Workbench platform was used to simulate heat transfer and the flow of the medium in the pipe network. The pressure and temperature of the flow field and the temperature and deformation of the solid structure under different conditions were calculated. Additionally, the deformation characteristics of the pipe network under coupled and noncoupled loads were compared. Results show that the maximum deformation was located at the corner of the elbow near the long‐arm region. The deformation of the inner wall was larger than that of the outer wall at the same position. The deformation of the pipe network was mainly affected by the pressure of the fluid. The deformation of the pipe network was influenced by the temperature and pressure loads coupled, and the coupling effect was stronger with the higher pressure and temperature of the medium. However, the coupling effect had limits.

show abstract

Heat transfer and thermal stress analysis in fluid-structure coupled field

Cited by 20 publications

References 11 publications

Coupling of integral methods and CFD for modeling complex industrial accidents

Coupling of integral methods and CFD for modeling complex industrial accidents

Analysis on stress and deformation of large-scale concentric recuperator for high-temperature PbLi loop

Effects of different loads on structure deformation of “L”‐type large‐diameter buried pipe network based on flow–heat–solid coupling

Contact Info

Product

Resources

About