Mathematical Modelling of Heat Transfer in Open Cell Foam of Different Porosities

2020 ◽  
pp. 371-382 ◽  
Author(s):  
Olga Soloveva ◽  
Sergei Solovev ◽  
Rishat Khusainov ◽  
Ruzil Yafizov
Keyword(s):  
Heat Transfer ◽  
Mathematical Modelling ◽  
Open Cell ◽  
Open Cell Foam ◽  
Cell Foam

scholarly journals Hydrodynamics and Convective Heat Transfer in Open Cell Foam with Micropores

2021 ◽  
Vol 54 ◽  
pp. 64-68
Author(s):  
Olga Soloveva ◽  
Sergei Solovev ◽  
Ruzil Yafizov
Keyword(s):  
Heat Transfer ◽  
Convective Heat Transfer ◽  
Convective Heat ◽  
Open Cell ◽  
Open Cell Foam ◽  
Cell Foam

Effect of Foam Properties on Heat Transfer in High Temperature Open-Cell Foam Inserts

2012 ◽  
Vol 95 (6) ◽  
pp. 2015-2021 ◽  
Author(s):  
Charles C. Tseng ◽  
Ruth L. Sikorski ◽  
Raymond Viskanta ◽  
Ming Y. Chen
Keyword(s):  
Heat Transfer ◽  
High Temperature ◽  
Open Cell ◽  
Open Cell Foam ◽  
Foam Properties ◽  
Cell Foam

INVESTIGATION OF HYDRODYNAMICS AND CONVECTIVE HEAT TRANSFER IN THE OPEN CELL FOAM MODELS OF VARIOUS GEOMETRY

2019 ◽  
Vol 57 (4) ◽  
pp. 109-121
Author(s):  
O.V. Soloveva ◽  
◽  
N.D. Yakimov ◽  
N.D. Chichirova ◽  
◽  
...  
Keyword(s):  
Heat Transfer ◽  
Convective Heat Transfer ◽  
Convective Heat ◽  
Open Cell ◽  
Open Cell Foam ◽  
Cell Foam

An Update on Heat Transfer in a Porous Insulation Medium in a Subsea Bundled Pipeline

2001 ◽  
Vol 123 (4) ◽  
pp. 285-290 ◽  
Author(s):  
Gary Zheng ◽  
Allen Verret ◽  
Nancy Burke ◽  
Neal Prescott ◽  
Dennis Cai ◽  
...  
Keyword(s):  
Heat Transfer ◽  
Pipe Wall ◽  
Effective Conductivity ◽  
Nitrogen Pressure ◽  
Heat Losses ◽  
Foam Material ◽  
Open Cell ◽  
Open Cell Foam ◽  
Energy Equations ◽  
Cell Foam

At the Multiphase ’99 Conference in Cannes, France, the authors presented a simple, yet general, formulation for effective conductivity of a porous insulation medium under pipeline application using fundamental continuity, momentum, and energy equations Zheng et al., 1999, “Heat Transfer in a Porous Insulation Medium in a Subsea Bundled Pipeline,” Paper No. 48 presented at Multiphase ’99, Cannes, France, ©BRH Group 1999. The effective conductivity was shown as a function of Darcy-modified Raleigh number only. The coefficients in the equation were then obtained from a set of tests for a simple pipe-in-pipe bundle with half-shell pieces of foam fitted around the inner pipe. Dramatic heat losses as experienced in some of field applications were recorded when the porous insulation foam is under high nitrogen pressure. All the heat losses were attributed to the increased heat convection within the porous insulation medium. Recognizing loose spaces between half-shells may contribute to the dramatic heat losses, the authors from R. J. Brown Deepwater conducted a new set of tests that used the same open-cell foam material, but with foamed-in-place application on the inner pipe wall. The new test data are used in this paper to derive an updated set of coefficients for the effective conductivity formulation. It is shown that such a foamed-in-place open-cell foam system maintains insulation effectiveness, even under high application pressures.

Heat Transfer in Open Cell Foam Insulation

1996 ◽  
Vol 118 (1) ◽  
pp. 88-93 ◽  
Author(s):  
D. Doermann ◽  
J. F. Sacadura
Keyword(s):  
Heat Transfer ◽  
Extinction Coefficient ◽  
Solid Material ◽  
Diffraction Theory ◽  
Radiative Properties ◽  
Cell Interior ◽  
Open Cell ◽  
Scattering Coefficients ◽  
Open Cell Foam ◽  
Cell Foam

Heat transfer in open cell foam insulation occurs by conduction through the solid material and through the gas in the cell interior and by thermal radiation, which propagates through the structure. The conductive process within these media is described using a simple parallel-series model. Spectral volumetric absorption and scattering coefficients as well as the spectral phase function are predicted using a combination of geometric optics laws and diffraction theory to model the interaction of radiation with the particles forming the foam. The particles considered are both struts formed at the juncture of three cells and strut junctures. The radiative properties can then be utilized to obtain a weighted extinction coefficient, which can be used in the Rosseland equation to obtain the radiative flux. The innovative part of the work lies in the radiative properties predictive model. This new model is compared with simpler ones.

scholarly journals Numerical Analysis on the Radiation-Convection Coupled Heat Transfer in an Open-Cell Foam Filled Annulus

Energies ◽  
2018 ◽  
Vol 11 (10) ◽  
pp. 2713 ◽  
Author(s):  
Xue Chen ◽  
Chuang Sun ◽  
Xinlin Xia ◽  
Rongqiang Liu
Keyword(s):  
Heat Transfer ◽  
Nusselt Number ◽  
Average Nusselt Number ◽  
Pore Diameter ◽  
Radiation Heat Transfer ◽  
Radiation Heat ◽  
Open Cell ◽  
Coupled Heat Transfer ◽  
Open Cell Foam ◽  
Cell Foam

Forced flow and radiation-convection coupled heat transfer in an annulus filled with open-cell foam was numerically investigated at high temperatures. The Darcy-Brinkman-Forchheimer model was utilized to represent the fluid transport. The two-energy equation model was applied for the non-equilibrium heat exchange between the fluid and solid phases, while the radiation heat transfer within the foam material was solved using the P1 approximation. Two different cases of thermal boundary conditions were studied and discussed in detail, namely the inner wall with a constant heat flux while the outer wall was adiabatic (case I) and vice versa (case II). The effects of pertinent factors on the heat transfer characteristics were examined, such as the foam structural parameters and the radii ratio of the annulus. The temperature, local and average Nusselt number were predicted. The results indicate that neglecting the thermal radiation causes a large deviation in predicting the thermal performance of such foam-fluid systems. Increasing the porosity and pore diameter both promote the radiation heat transfer, while it is weakened by increasing the radii ratio. The average Nusselt number decreases as the porosity increases, while it exhibits a non-monotonic change with the pore diameter and radii ratio. Besides, case I shows a higher average Nusselt number than case II and presents an improved thermal performance.

scholarly journals Simulation and optimization of the removal of toluene in air by ozonation with a catalytic open-cell foam

2021 ◽  
Vol 168 ◽  
pp. 453-464
Author(s):  
Audrey Cabrol ◽  
Antoine Lejeune ◽  
Ronan Lebullenger ◽  
Audrey Denicourt-Nowicki ◽  
Alain Roucoux ◽  
...  
Keyword(s):  
Open Cell ◽  
Simulation And Optimization ◽  
Open Cell Foam ◽  
Cell Foam
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