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Can anyone help with the relative permeability of epoxy resin?
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Mats Andersson
Can anyone help with the relative permeability of epoxy resin?
Usually relative permeability is a parameter of porous media, and it depends on weaving style, fabric weight and material, moreover is a tensor, in fact it depends on the direction of the flux respect to the fibres. Lots of value are available in literature, and typical magnitude is 1e-9.
Usually relative permeability is a parameter of porous media, and it depends on weaving style, fabric weight and material, moreover is a tensor, in fact it depends on the direction of the flux respect to the fibres. Lots of value are available in literature, and typical magnitude is 1e-9.
The parameters can be find easily in literature; if your question is "what simulation method shall I use to simulate the permeation process", then you should give some more details about your problem, especially the scale at which you intend to study this phenomenon.
The parameters can be find easily in literature; if your question is "what simulation method shall I use to simulate the permeation process", then you should give some more details about your problem, especially the scale at which you intend to study this phenomenon.
Hi - if you have the Pc-S data, then you can use Brooks-Corey-Burdine relationship to determine the relative permeability. You would find more on the following paper
Das, DB, Hassanizadeh, SM, Rotter, BE, Ataie Ashtiani, B (2004) A Numerical Study of Micro-Heterogeneity Effects on Upscaled Properties of Two-Phase Flow in Porous Media, Transport in Porous Media, 56, pp.329-350.
Das, DB, Gauldie, R, Mirzaei, M (2007) Dynamic effects for two-phase flow in porous media: Fluid property effects, AIChE Journal, 53(10), pp.2505-2520, DOI: 10.1002/aic.11292.
Hi - if you have the Pc-S data, then you can use Brooks-Corey-Burdine relationship to determine the relative permeability. You would find more on the following paper
Das, DB, Hassanizadeh, SM, Rotter, BE, Ataie Ashtiani, B (2004) A Numerical Study of Micro-Heterogeneity Effects on Upscaled Properties of Two-Phase Flow in Porous Media, Transport in Porous Media, 56, pp.329-350.
Das, DB, Gauldie, R, Mirzaei, M (2007) Dynamic effects for two-phase flow in porous media: Fluid property effects, AIChE Journal, 53(10), pp.2505-2520, DOI: 10.1002/aic.11292.
This may help you...it is not so straightforward to measure the relative permeability, in some cases in first approximation you can use only the saturated one...
This may help you...it is not so straightforward to measure the relative permeability, in some cases in first approximation you can use only the saturated one...
You might want to read Jerry White's paper on Advanced Materials, 12(25) 1794 (2000) where Dow scientists had worked on comparison of different epoxy materials in their oxygen and carbon dioxide permeability.
You might want to read Jerry White's paper on Advanced Materials, 12(25) 1794 (2000) where Dow scientists had worked on comparison of different epoxy materials in their oxygen and carbon dioxide permeability.
Thanks for your kind reply As I know permeability is a intrinsic parameter of porous media an it's unit is m^2. If using single phase flow just need intrinsic permeability. but when simulate multi-phase flow in porous media in addition use intrinsic permeability we have to use relative permeability too. Indeed relative permeability depends on fluids that flow in matrix. the equation is Mu-r=((Mu-eff)/Mu-0) Mu-r=relative permeability Mu-eff=effective permeability Mu-0=intrinsic permeability I want to simulate a mold that fibers placed in it and it's pressure close to vacuum. So because of vacuum fluid (epoxy resin) inject to mold. Because in initial time air is existed in mold and then resin inject to mold , so I want to simulate in multi-phase flow. Now I don't know what is the relative permeability of resin and air?? What should I do?
Thanks for your kind reply As I know permeability is a intrinsic parameter of porous media an it's unit is m^2. If using single phase flow just need intrinsic permeability. but when simulate multi-phase flow in porous media in addition use intrinsic permeability we have to use relative permeability too. Indeed relative permeability depends on fluids that flow in matrix. the equation is Mu-r=((Mu-eff)/Mu-0) Mu-r=relative permeability Mu-eff=effective permeability Mu-0=intrinsic permeability I want to simulate a mold that fibers placed in it and it's pressure close to vacuum. So because of vacuum fluid (epoxy resin) inject to mold. Because in initial time air is existed in mold and then resin inject to mold , so I want to simulate in multi-phase flow. Now I don't know what is the relative permeability of resin and air?? What should I do?
Usually relative permeability is a parameter of porous media, and it depends on weaving style, fabric weight and material, moreover is a tensor, in fact it depends on the direction of the flux respect to the fibres. Lots of value are available in literature, and typical magnitude is 1e-9.
Usually relative permeability is a parameter of porous media, and it depends on weaving style, fabric weight and material, moreover is a tensor, in fact it depends on the direction of the flux respect to the fibres. Lots of value are available in literature, and typical magnitude is 1e-9.
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The parameters can be find easily in literature; if your question is "what simulation method shall I use to simulate the permeation process", then you should give some more details about your problem, especially the scale at which you intend to study this phenomenon.
The parameters can be find easily in literature; if your question is "what simulation method shall I use to simulate the permeation process", then you should give some more details about your problem, especially the scale at which you intend to study this phenomenon.
More
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Sorry the attachment did not attach.
Article Dynamic saturation curve measurement for resin flow in glass...
Sorry the attachment did not attach.
Article Dynamic saturation curve measurement for resin flow in glass...
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Hi - if you have the Pc-S data, then you can use Brooks-Corey-Burdine relationship to determine the relative permeability. You would find more on the following paper
Das, DB, Hassanizadeh, SM, Rotter, BE, Ataie Ashtiani, B (2004) A Numerical Study of Micro-Heterogeneity Effects on Upscaled Properties of Two-Phase Flow in Porous Media, Transport in Porous Media, 56, pp.329-350.
Das, DB, Gauldie, R, Mirzaei, M (2007) Dynamic effects for two-phase flow in porous media: Fluid property effects, AIChE Journal, 53(10), pp.2505-2520, DOI: 10.1002/aic.11292.
Hi - if you have the Pc-S data, then you can use Brooks-Corey-Burdine relationship to determine the relative permeability. You would find more on the following paper
Das, DB, Hassanizadeh, SM, Rotter, BE, Ataie Ashtiani, B (2004) A Numerical Study of Micro-Heterogeneity Effects on Upscaled Properties of Two-Phase Flow in Porous Media, Transport in Porous Media, 56, pp.329-350.
Das, DB, Gauldie, R, Mirzaei, M (2007) Dynamic effects for two-phase flow in porous media: Fluid property effects, AIChE Journal, 53(10), pp.2505-2520, DOI: 10.1002/aic.11292.
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This may help you...it is not so straightforward to measure the relative permeability, in some cases in first approximation you can use only the saturated one...
This may help you...it is not so straightforward to measure the relative permeability, in some cases in first approximation you can use only the saturated one...
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I understand it is not dielectric constant. Look
http://web.mit.edu/andrew3/Public/Papers/1996/Ferland/1996_Polymer%20Composites_Concurrent%20Methods%20for%20Permeability%20Measurement_Ferland.pdf
I understand it is not dielectric constant. Look
http://web.mit.edu/andrew3/Public/Papers/1996/Ferland/1996_Polymer%20Composites_Concurrent%20Methods%20for%20Permeability%20Measurement_Ferland.pdf
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You might want to read Jerry White's paper on Advanced Materials, 12(25) 1794 (2000) where Dow scientists had worked on comparison of different epoxy materials in their oxygen and carbon dioxide permeability.
You might want to read Jerry White's paper on Advanced Materials, 12(25) 1794 (2000) where Dow scientists had worked on comparison of different epoxy materials in their oxygen and carbon dioxide permeability.
More
VOTE
Thanks for your kind reply
As I know permeability is a intrinsic parameter of porous media an it's unit is m^2. If using single phase flow just need intrinsic permeability.
but when simulate multi-phase flow in porous media in addition use intrinsic permeability we have to use relative permeability too. Indeed relative permeability depends on fluids that flow in matrix. the equation is Mu-r=((Mu-eff)/Mu-0)
Mu-r=relative permeability
Mu-eff=effective permeability
Mu-0=intrinsic permeability
I want to simulate a mold that fibers placed in it and it's pressure close to vacuum. So because of vacuum fluid (epoxy resin) inject to mold. Because in initial time air is existed in mold and then resin inject to mold , so I want to simulate in multi-phase flow.
Now I don't know what is the relative permeability of resin and air?? What should I do?
Thanks for your kind reply
As I know permeability is a intrinsic parameter of porous media an it's unit is m^2. If using single phase flow just need intrinsic permeability.
but when simulate multi-phase flow in porous media in addition use intrinsic permeability we have to use relative permeability too. Indeed relative permeability depends on fluids that flow in matrix. the equation is Mu-r=((Mu-eff)/Mu-0)
Mu-r=relative permeability
Mu-eff=effective permeability
Mu-0=intrinsic permeability
I want to simulate a mold that fibers placed in it and it's pressure close to vacuum. So because of vacuum fluid (epoxy resin) inject to mold. Because in initial time air is existed in mold and then resin inject to mold , so I want to simulate in multi-phase flow.
Now I don't know what is the relative permeability of resin and air?? What should I do?
More
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